DOCSLIB.ORG

Coleoptera: Dytiscidae)

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Coleoptera: Dytiscidae) ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Koleopterologische Rundschau Jahr/Year: 2013 Band/Volume: 83_2013 Autor(en)/Author(s): Michat Mariano C. Artikel/Article: Description of the larvae of Thermonectus alfredi GRIFFINI, 1898 (Coleoptera: Dytiscidae). 7-15 ©Wiener Coleopterologenverein (WCV), download unter www.biologiezentrum.at 6 Koleopt. Rdsch. 83 (2013) Koleopterologische Rundschau 83 7–15 Wien, September 2013 Remarks: This species belongs to the O. grootaerti species group, and is closely allied to O. angkor TIAN & DEUVE, 2006, but its aedeagus with the apical lamella is much longer and thinner than that of O. angkor. Description of the larvae of Etymology: The name is proposed in honor of our good friend Dr. Thierry Deuve, a well-known Thermonectus alfredi GRIFFINI, 1898 carabidologist in the Muséum National d’Histoire Naturelle, Paris, France. (Coleoptera: Dytiscidae) Distribution: Southern Vietnam. M.C. MICHAT Acknowledgements Abstract We thank Alain Drumont (IRSNB) and Jiři Hájek (NMPC) for providing interesting specimens. Our sincere thanks are also due to Thierry Deuve and Azadeh Taghavian (Muséum National The three larval instars of Thermonectus alfredi GRIFFINI, 1898 (Coleoptera: Dytiscidae) are described and illustrated for the first time, emphasizing the morphometry and chaetotaxy. In this species, the d’Histoire Naturelle, Paris) for their assistance on various aspects. The first author would like to median process of the prementum is slightly bifid apically, bearing two spine-like setae (LA8), which express his hearty appreciations to the Muséum National d’Histoire Naturelle, Paris for are diagnostic features of the genus Thermonectus DEJEAN, 1833. The first instar of T. alfredi differs providing financial and logistic support for his study. This study is also sponsored in part by the from that of T. succinctus (AUBÉ, 1838) in the number of additional spine-like setae on the dorsal National Natural Science Foundation of China (Grant no. 41271062). surface of the stipes and on the anterodorsal surface of the prementum, and in the presence of additional anterodistal setae on the metafemur. On the other hand, the third instar of T. alfredi differs from those of T. basillaris (HARRIS, 1829) and T. succinctus in the number of secondary setae on the References femur and the metatibia, and from that of T. nigrofasciatus ornaticollis (AUBÉ, 1838) in the length of seta LA8, which is shorter than the median process of the prementum. ABHITHA, P., SABU, T.K. & TIAN, M.Y. 2009: Termitophilous Orthogonius (Coleoptera: Carabidae) from South India. – Oriental Insects 43: 369–378. Key words: Coleoptera, Dytiscidae, Aciliini, larval morphology, chaetotaxy, Neotropical Region, TIAN, M.Y. & DEUVE, T. 2008: Key to species of the genus Orthogonius Macleay of Cambodia, with Argentina. descriptions of four new species (Coleoptera: Caraboidea: Orthogoniini). – Bulletin de l’institut Royal des Sciences Naturelles de Belgique, Entomologie 78: 215–220. Introduction TIAN, M.Y. & DEUVE, T. 2009: A review of the genus Actenoncus Chaudoir (Coleoptera: Caraboidea: Orthogoniini). – Zootaxa 2135: 57–64. The diving-beetle genus Thermonectus DEJEAN, 1833 (Dytiscinae: Aciliini) includes 19 species (NILSSON 2010). Their larvae are characterized by a planktonic lifestyle (WILSON 1923, MICHAT TIAN, M.Y. & DEUVE, T. 2010: A provisional species checklist of the Oriental Orthogoninae (Coleoptera: & TORRES 2005). Whereas this habit is shared with other members of the tribe Aciliini, it is Caraboidea). – Entomotaxonomia 32 (suppl.): 137–148. contrasting with other groups of diving beetles in which the larvae live mainly on the bottom or TIAN, M.Y., DEUVE, T. & FELIX, R. 2012: Orthogonius species and diversity in Thailand (Coleoptera, close to aquatic plants. Caraboidea, Orthogoniini), a result from the TIGER project. – ZooKeys 164: 51–90. Larval morphology of members of Thermonectus is poorly known, with only five species known Ming-Yi TIAN as larvae: T. nigrofasciatus ornaticollis (AUBÉ, 1838) (WILSON 1923), T. basillaris (HARRIS, Department of Entomology, College of Natural Resources and Environment, South China Agricultural University, 1829) (WILSON 1923, BARMAN & CARROLL 2002, CARROLL & BARMAN 2004, BARMAN & Wushan, Guangzhou, 510640, China ([email protected]) EPLER 2005), T. circumscriptus (LATREILLE, 1809) (BERTRAND 1931), T. succinctus (MICHAT & TORRES 2005, ALARIE et al. 2011), and T. alfredi (CRESPO 1987). See also SPANGLER (1966) for Erich KIRSCHENHOFER Otto Elsner Gasse 10–12, A – 2380, Perchtoldsdorf, Austria ([email protected]) description of an unidentified larva. The existing descriptions have different degrees of detail, and chaetotaxy was emphasized only in few cases, which prevent in-depth comparisons among the species (see MICHAT & TORRES 2005 for a summary of the state of knowledge of the larval morphology of the genus). Thermonectus alfredi GRIFFINI, 1898 is a large species that lives in mountainous areas in northwestern Argentina and in the Ventania system in central eastern Argentina (TRÉMOUILLES 1989). The only larval description for this species (mature larva) can be found in an unpublished thesis by CRESPO (1987), not widely available. The results of the present paper are based on the discovery of all instars of T. alfredi in the Ventania system, which gives the opportunity to provide a description and chaetotaxic analysis of the larvae. This paper is meant to be a step toward a better knowledge of the genus Thermonectus, and has the following goals: 1) to describe and illustrate the three larval instars of T. alfredi, 2) to perform detailed morphometric and chaetotaxic analyses of selected larval structures, and 3) to compare these larvae with those of other species of the genus. ©Wiener Coleopterologenverein (WCV), download unter www.biologiezentrum.at 8 Koleopt. Rdsch. 83 (2013) Material and methods Five specimens of instar I, three of instar II and four of instar III were used for the descriptions. The larvae were collected in association with adults at the following locality: Argentina, Buenos Aires Province, Sierra de la Ventana, Ernesto Tornquist Park, December 2006. Specimens were cleared in lactic acid, dissected and mounted on glass slides with polyvinyl- lacto-glycerol. Observation (at magnifications up to 1000 ×) and drawings were made using an Olympus CX31 compound microscope equipped with a camera lucida. Drawings were scanned and edited digitally. The material is deposited in the collection of the author (Laboratory of Entomology, Buenos Aires University, Argentina). The methods and terms used in the present paper follow those employed in previous papers dealing with the larval morphology and chaetotaxy of members of the subfamily Dytiscinae. The reader is referred to MICHAT & TORRES (2005) and ALARIE et al. (2011) for a complete list of the terms commonly used in the study of dytiscid larvae. Table 1: Measurements and ratios for the three larval instars of Thermonectus alfredi. Measure Instar I (n = 3) Instar II (n = 3) Instar III (n = 3) HL (mm) 1.46–1.53 2.20–2.26 3.14–3.23 HW (mm) 1.18–1.21 1.73–1.75 2.40–2.45 FRL (mm) 0.66–0.70 0.98–1.01 1.33–1.39 OCW (mm) 0.43–0.45 0.73–0.75 1.11–1.20 HL/HW 1.23–1.30 1.26–1.29 1.31–1.34 HW/OCW 2.64–2.85 2.33–2.38 2.00–2.16 COL/HL 0.54–0.55 0.55–0.56 0.57–0.58 FRL/HL 0.45–0.46 0.44–0.45 0.42–0.43 A/HW 0.46–0.49 0.43–0.46 0.42–0.44 A1/A3 0.81–0.85 0.76–0.82 0.77–0.89 A2/A3 0.85–0.89 0.83–0.86 0.85–0.94 A4/A3 0.31–0.32 0.19–0.24 0.11–0.13 MNL/MNW 2.65–2.70 2.74–2.79 2.95–3.44 MNL/HL 0.43–0.45 0.42–0.44 0.43–0.44 PPF/MP1 0.33–0.36 0.27–0.33 0.24–0.27 A/MP 1.68–1.73 1.68–1.73 1.59–1.67 MP1/MP2 0.60–0.71 0.69–0.85 0.75–0.85 MP3/MP2 1.85–2.24 1.69–1.73 1.40–1.50 GA/MP1 2.75–2.91 2.44–2.89 2.53–2.80 MP/LP 0.78–0.83 0.74–0.76 0.74–0.76 LP2/LP1 0.93–0.95 0.79–0.83 0.70–0.80 L3 (mm) 3.11–3.25 4.76–4.92 7.19–7.46 L3/L1 1.03–1.05 1.07–1.09 1.12–1.14 L3/L2 0.97–1.02 0.99–1.00 1.01–1.04 L3/HW 2.62–2.68 2.76–2.81 3.00–3.05 L3 (CO/FE) 0.69–0.76 0.77–0.78 0.84–0.86 L3 (TI/FE) 0.75–0.76 0.71–0.73 0.69–0.70 L3 (TA/FE) 0.53–0.57 0.50–0.51 0.46–0.47 L3 (CL/TA) 0.40–0.42 0.28–0.29 0.22–0.24 LAS (mm) 1.50–1.63 2.28–2.30 3.18–3.28 LAS/HW 1.26–1.38 1.30–1.33 1.30–1.36 U (mm) 0.59–0.64 0.86–0.88 1.18–1.23 U/LAS 0.38–0.39 0.38 0.36–0.39 U/HW 0.49–0.53 0.49–0.51 0.49–0.51 ©Wiener Coleopterologenverein (WCV), download unter www.biologiezentrum.at 8 Koleopt. Rdsch. 83 (2013) MICHAT: Description of the larvae of Thermonectus alfredi (DYTISCIDAE) 9 Material and methods Results Five specimens of instar I, three of instar II and four of instar III were used for the descriptions.
Load more

Recommended publications
  • Water Beetles
    Ireland Red List No. 1 Water beetles Ireland Red List No. 1: Water beetles G.N. Foster1, B.H. Nelson2 & Á. O Connor3 1 3 Eglinton Terrace, Ayr KA7 1JJ 2 Department of Natural Sciences, National Museums Northern Ireland 3 National Parks & Wildlife Service, Department of Environment, Heritage & Local Government Citation: Foster, G. N., Nelson, B. H. & O Connor, Á. (2009) Ireland Red List No. 1 – Water beetles. National Parks and Wildlife Service, Department of Environment, Heritage and Local Government, Dublin, Ireland. Cover images from top: Dryops similaris (© Roy Anderson); Gyrinus urinator, Hygrotus decoratus, Berosus signaticollis & Platambus maculatus (all © Jonty Denton) Ireland Red List Series Editors: N. Kingston & F. Marnell © National Parks and Wildlife Service 2009 ISSN 2009‐2016 Red list of Irish Water beetles 2009 ____________________________ CONTENTS ACKNOWLEDGEMENTS .................................................................................................................................... 1 EXECUTIVE SUMMARY...................................................................................................................................... 2 INTRODUCTION................................................................................................................................................ 3 NOMENCLATURE AND THE IRISH CHECKLIST................................................................................................ 3 COVERAGE .......................................................................................................................................................
    [Show full text]
  • Wild Species 2010 the GENERAL STATUS of SPECIES in CANADA
    Wild Species 2010 THE GENERAL STATUS OF SPECIES IN CANADA Canadian Endangered Species Conservation Council National General Status Working Group This report is a product from the collaboration of all provincial and territorial governments in Canada, and of the federal government. Canadian Endangered Species Conservation Council (CESCC). 2011. Wild Species 2010: The General Status of Species in Canada. National General Status Working Group: 302 pp. Available in French under title: Espèces sauvages 2010: La situation générale des espèces au Canada. ii Abstract Wild Species 2010 is the third report of the series after 2000 and 2005. The aim of the Wild Species series is to provide an overview on which species occur in Canada, in which provinces, territories or ocean regions they occur, and what is their status. Each species assessed in this report received a rank among the following categories: Extinct (0.2), Extirpated (0.1), At Risk (1), May Be At Risk (2), Sensitive (3), Secure (4), Undetermined (5), Not Assessed (6), Exotic (7) or Accidental (8). In the 2010 report, 11 950 species were assessed. Many taxonomic groups that were first assessed in the previous Wild Species reports were reassessed, such as vascular plants, freshwater mussels, odonates, butterflies, crayfishes, amphibians, reptiles, birds and mammals. Other taxonomic groups are assessed for the first time in the Wild Species 2010 report, namely lichens, mosses, spiders, predaceous diving beetles, ground beetles (including the reassessment of tiger beetles), lady beetles, bumblebees, black flies, horse flies, mosquitoes, and some selected macromoths. The overall results of this report show that the majority of Canada’s wild species are ranked Secure.
    [Show full text]
  • Coleoptera: Dytiscidae) Rasa Bukontaite1,2*, Kelly B Miller3 and Johannes Bergsten1
    Bukontaite et al. BMC Evolutionary Biology 2014, 14:5 http://www.biomedcentral.com/1471-2148/14/5 RESEARCH ARTICLE Open Access The utility of CAD in recovering Gondwanan vicariance events and the evolutionary history of Aciliini (Coleoptera: Dytiscidae) Rasa Bukontaite1,2*, Kelly B Miller3 and Johannes Bergsten1 Abstract Background: Aciliini presently includes 69 species of medium-sized water beetles distributed on all continents except Antarctica. The pattern of distribution with several genera confined to different continents of the Southern Hemisphere raises the yet untested hypothesis of a Gondwana vicariance origin. The monophyly of Aciliini has been questioned with regard to Eretini, and there are competing hypotheses about the intergeneric relationship in the tribe. This study is the first comprehensive phylogenetic analysis focused on the tribe Aciliini and it is based on eight gene fragments. The aims of the present study are: 1) to test the monophyly of Aciliini and clarify the position of the tribe Eretini and to resolve the relationship among genera within Aciliini, 2) to calibrate the divergence times within Aciliini and test different biogeographical scenarios, and 3) to evaluate the utility of the gene CAD for phylogenetic analysis in Dytiscidae. Results: Our analyses confirm monophyly of Aciliini with Eretini as its sister group. Each of six genera which have multiple species are also supported as monophyletic. The origin of the tribe is firmly based in the Southern Hemisphere with the arrangement of Neotropical and Afrotropical taxa as the most basal clades suggesting a Gondwana vicariance origin. However, the uncertainty as to whether a fossil can be used as a stem-or crowngroup calibration point for Acilius influenced the result: as crowngroup calibration, the 95% HPD interval for the basal nodes included the geological age estimate for the Gondwana break-up, but as a stem group calibration the basal nodes were too young.
    [Show full text]
  • Current Developments in the Application of Dna Barcoding to Solving Biodiversity Conservation Problems in Developing Countries *C
    G.J.B.A.H.S.,Vol.3(3):285-288 (July-September, 2014) ISSN: 2319 – 5584 CURRENT DEVELOPMENTS IN THE APPLICATION OF DNA BARCODING TO SOLVING BIODIVERSITY CONSERVATION PROBLEMS IN DEVELOPING COUNTRIES *C. O. Onyia1; O. P. Jideofor1; B. O Ojiego1; B. O. Solomon1;O.Ogundipe2; & L. J. Ogbadu1 1National Biotechnology Development Agency, (NABDA) 2University of Lagos *Corresponding Author ABSTRACT A DNA barcode is a genetic signature that occurs naturally within the genome of every living species. One of the gene regions commonly used for all animal groups is a 648 base pair region in the mitochondrial cytochrome oxidase 1 gene (CO1), it has been effectively used in identifying birds, flies, butterflies, fishes and many other animal groups due primarily to the high polymorphisms among species. However, CO1 is not effective in identifying and distinguishing plants because it changes too slowly in plants. Currently, two gene regions in the chloroplast, MatK and rbcl are employed in bar-coding land plants. In 2003, Paul Herbert and research group published a paper entitled “Biological Identification through DNA barcodes, which created awareness among scientists (taxonomists in particular) on the usefulness of DNA Barcode as an effective technique for identification of species. In the one decade of research after this publication, DNA barcode has evolved rapidly into a tool that can be employed for solving many environmental, agricultural, health and conservation problems around the globe. It also has applications in disease and pest control, market fraud detection and protection of endangered species. Some developing countries like Nigeria are known for their rich biodiversity, but technology is very low in area of conservation and management of these biological resources.
    [Show full text]
  • Predation on a Discoglossus Pictus (Anura: Discoglossidae) Tadpole by the Larva of a Water Beetle (Dytiscidae: Dytiscinae: Dytiscus Sp.) in Tunisia
    Herpetology Notes, volume 8: 453-454 (published online on 12 August 2015) Predation on a Discoglossus pictus (Anura: Discoglossidae) tadpole by the larva of a water beetle (Dytiscidae: Dytiscinae: Dytiscus sp.) in Tunisia Hendrik Müller* and Axel C. Brucker Anurans and their larvae are frequently preyed upon aquatic systems worldwide (e.g. Channing et al., 2012; by a number of invertebrate predators, particularly Ohba and Inantani, 2012; Zina et al., 2012; Larson and spiders, belostomatid bugs, dragonfly larvae, and Müller, 2013), and have also been recorded as predators aquatic beetles and their larvae (see Wells, 2007 for of D. pictus tadpoles (Knoepfler, 1962), but predation recent review). While searching for amphibians on Cap events remain scarcely documented for North African Bon Peninsula, Tunisia, on 4 April 2015 at around 3pm, populations. we observed a large aquatic larva of a water beetle that had captured a tadpole in a water-filled ditch adjacent References to a countryside road north of Dar Chaabane Al Fehri, Channing, A., Rödel, M.-O., Channing, J. (2012): Tadpoles of Nabeul Governorate, Tunisia (N36.49012, E10.75959, Africa. Chimaira, Frankfurt/M. 402 pp. 40 m asl). The ditch was shallow, with a maximum Engelmann, W.-E., Fritzsche, J., Günther, R., Obst, F.J. (1993): depth of ca. 25 cm and an overall size of about 1 m x Lurche und Kriechtiere Europas. Neumann Verlag, Radebeul. 7 m. Besides numerous unidentified tadpoles, the only 440pp. metamorphosed amphibians observed were subadult and Gosner, K.L. (1960): A simplified table for staging anuran embryos and larvae with notes on identification.
    [Show full text]
  • Learning from the Extraordinary: How the Highly Derived Larval Eyes of the Sunburst Diving Beetle Can Give Insights Into Aspects Of
    Learning from the extraordinary: How the highly derived larval eyes of the Sunburst Diving Beetle can give insights into aspects of holometabolous insect visual systems A dissertation submitted to the Division of Research and Advanced Studies of the University of Cincinnati In partial fulfillment of the requirements for the degree of Doctorate of Philosophy (Ph.D.) In the department of Biological Sciences of the College of Arts and Sciences 2011 by Nadine Stecher B.S., University of Rostock, 2001 M.S., University of Rostock, 2005 Committee Chair: Elke K. Buschbeck, Ph.D. Abstract Stemmata, the eyes of holometabolous insect larvae, vary greatly in number, structure and task. The stemmata of the Sunburst Diving Beetle, Thermonectus marmoratus, are among the most sophisticated. The predatory larvae have six eyes and a potentially light-sensitive spot (eye spot) adjacent to the stemmata. The forward-pointing tubular eyes Eye 1 (E1) and Eye 2 (E2) are involved in prey capture, and possess a biconvex lens, a cellular crystalline cone-like structure, and tiered retinal tissue. A distal and a proximal retina can be distinguished, which differ not only in morphology but possibly also in function. E1 has an additional retina which runs medially alongside the crystalline cone-like structure. Using transmission electron microscopic preparations, I described the ultrastructure of the retinas of the principal eyes E1 and E2. The proximal retinas are composed of photoreceptors with predominantly parallel microvilli, and neighboring rhabdomeres are oriented approximately orthogonally to each another. This rhabdomeric arrangement is typical for eyes that are polarization sensitive. A similar organization is observed in a portion of the medial retina of E1, but not in either of the distal retinas.
    [Show full text]
  • Ana Kurbalija PREGLED ENTOMOFAUNE MOČVARNIH
    SVEUČILIŠTE JOSIPA JURJA STROSSMAYERA U OSIJEKU I INSTITUT RUĐER BOŠKOVI Ć, ZAGREB Poslijediplomski sveučilišni interdisciplinarni specijalisti čki studij ZAŠTITA PRIRODE I OKOLIŠA Ana Kurbalija PREGLED ENTOMOFAUNE MOČVARNIH STANIŠTA OD MEĐUNARODNOG ZNAČENJA U REPUBLICI HRVATSKOJ Specijalistički rad Osijek, 2012. TEMELJNA DOKUMENTACIJSKA KARTICA Sveučilište Josipa Jurja Strossmayera u Osijeku Specijalistički rad Institit Ruđer Boškovi ć, Zagreb Poslijediplomski sveučilišni interdisciplinarni specijalisti čki studij zaštita prirode i okoliša Znanstveno područje: Prirodne znanosti Znanstveno polje: Biologija PREGLED ENTOMOFAUNE MOČVARNIH STANIŠTA OD ME ĐUNARODNOG ZNAČENJA U REPUBLICI HRVATSKOJ Ana Kurbalija Rad je izrađen na Odjelu za biologiju, Sveučilišta Josipa Jurja Strossmayera u Osijeku Mentor: izv.prof. dr. sc. Stjepan Krčmar U ovom radu je istražen kvalitativni sastav entomof aune na četiri močvarna staništa od me đunarodnog značenja u Republici Hrvatskoj. To su Park prirode Kopački rit, Park prirode Lonjsko polje, Delta rijeke Neretve i Crna Mlaka. Glavni cilj specijalističkog rada je objediniti sve objavljene i neobjavljene podatke o nalazima vrsta kukaca na ova četiri močvarna staništa te kvalitativno usporediti entomofau nu pomoću Sörensonovog indexa faunističke sličnosti. Na području Parka prirode Kopački rit utvrđeno je ukupno 866 vrsta kukaca razvrstanih u 84 porodice i 513 rodova. Na području Parka prirode Lonjsko polje utvrđeno je 513 vrsta kukaca razvrstanih u 24 porodice i 89 rodova. Na području delte rijeke Neretve utvrđeno je ukupno 348 vrsta kukaca razvrstanih u 89 porodica i 227 rodova. Za područje Crne Mlake nije bilo dostupne literature o nalazima kukaca. Velika vrijednost Sörensonovog indexa od 80,85% ukazuje na veliku faunističku sličnost između faune obada Kopačkoga rita i Lonjskoga polja. Najmanja sličnost u fauni obada utvrđena je između močvarnih staništa Lonjskog polja i delte rijeke Neretve, a iznosi 41,37%.
    [Show full text]
  • The Genus Thermonectus Dejean, 1833 in Belize (Coleoptera: Dytiscidae)
    See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/341495123 The genus Thermonectus Dejean, 1833 in Belize (Coleoptera: Dytiscidae) Article in Bulletin de la Société royale belge d’Entomologie/Bulletin van de Koninklijke Belgische vereniging voor entomologie · March 2020 CITATIONS READ 0 1 2 authors, including: Kevin Scheers Research Institute for Nature and Forest 39 PUBLICATIONS 57 CITATIONS SEE PROFILE Some of the authors of this publication are also working on these related projects: Watervlakken : polygonenkaart van stilstaand water in Vlaanderen; Een instrument voor onderzoek, water-, milieu- en natuurbeleid View project Water beetles of Belize (Central America) View project All content following this page was uploaded by Kevin Scheers on 19 May 2020. The user has requested enhancement of the downloaded file. Bulletin de la Société royale belge d’Entomologie / Bulletin van de Koninklijke Belgische Vereniging voor Entomologie, 156 (2020): 52–57 The genus Thermonectus Dejean, 1833 in Belize (Coleoptera: Dytiscidae) Kevin SCHEERS1,2* & Arno THOMAES1 1 Research Institute for Nature and Forest (INBO), Havenlaan 88 bus 73, B-1000 Brussels, Belgium. 2 Biodiversity Inventory for Conservation NPO (BINCO), Walmersumstraat 44, B-3380 Glabbeek, Belgium. * Corresponding author: [email protected]. Abstract This paper deals with the taxonomic composition, distribution and ecology of the genus Thermonectus Dejean, 1833 in Belize. During a field survey in 2015 three species were found: Thermonectus basillaris (Harris, 1829), T. circumscriptus (Latreille, 1809) and T. margineguttatus (Aubé, 1838). These are the first records of this genus in Belize. Keywords: water beetles, Hydradephaga, British Honduras, Central America, Neotropical region Samenvatting In dit artikel wordt de taxonomische compositie, verspreiding en ecologie van het Genus Thermonectus Dejean, 1833 in Belize besproken.
    [Show full text]
  • A Rapid Biological Assessment of the Upper Palumeu River Watershed (Grensgebergte and Kasikasima) of Southeastern Suriname
    Rapid Assessment Program A Rapid Biological Assessment of the Upper Palumeu River Watershed (Grensgebergte and Kasikasima) of Southeastern Suriname Editors: Leeanne E. Alonso and Trond H. Larsen 67 CONSERVATION INTERNATIONAL - SURINAME CONSERVATION INTERNATIONAL GLOBAL WILDLIFE CONSERVATION ANTON DE KOM UNIVERSITY OF SURINAME THE SURINAME FOREST SERVICE (LBB) NATURE CONSERVATION DIVISION (NB) FOUNDATION FOR FOREST MANAGEMENT AND PRODUCTION CONTROL (SBB) SURINAME CONSERVATION FOUNDATION THE HARBERS FAMILY FOUNDATION Rapid Assessment Program A Rapid Biological Assessment of the Upper Palumeu River Watershed RAP (Grensgebergte and Kasikasima) of Southeastern Suriname Bulletin of Biological Assessment 67 Editors: Leeanne E. Alonso and Trond H. Larsen CONSERVATION INTERNATIONAL - SURINAME CONSERVATION INTERNATIONAL GLOBAL WILDLIFE CONSERVATION ANTON DE KOM UNIVERSITY OF SURINAME THE SURINAME FOREST SERVICE (LBB) NATURE CONSERVATION DIVISION (NB) FOUNDATION FOR FOREST MANAGEMENT AND PRODUCTION CONTROL (SBB) SURINAME CONSERVATION FOUNDATION THE HARBERS FAMILY FOUNDATION The RAP Bulletin of Biological Assessment is published by: Conservation International 2011 Crystal Drive, Suite 500 Arlington, VA USA 22202 Tel : +1 703-341-2400 www.conservation.org Cover photos: The RAP team surveyed the Grensgebergte Mountains and Upper Palumeu Watershed, as well as the Middle Palumeu River and Kasikasima Mountains visible here. Freshwater resources originating here are vital for all of Suriname. (T. Larsen) Glass frogs (Hyalinobatrachium cf. taylori) lay their
    [Show full text]
  • Diving Beetles of the Sakaerat Biosphere Reserve, Nakhon Ratchasima Province, with Four New Records for Thailand
    SPIXIANA 41 1 91-98 München, Oktober 2018 ISSN 0341-8391 Diving beetles of the Sakaerat Biosphere Reserve, Nakhon Ratchasima Province, with four new records for Thailand (Coleoptera, Dytiscidae) Wisrutta Atthakor, Lars Hendrich, Narumon Sangpradub & Michael Balke Atthakor, W., Hendrich, L., Sangpradub, N. & Balke, M. 2018. Diving beetles of the Sakaerat Biosphere Reserve, Nakhon Ratchasima Province, with four new re- cords for Thailand (Coleoptera, Dytiscidae). Spixiana 41 (1): 91-98. A recent survey of the Dytiscidae of Sakaerat Biosphere Reserve, Nakhon Ratcha- sima Province in Northeast Thailand revealed 9 genera and 22 species, mainly collected in lentic habitats. Most identified species are widespread in the Indo- Malayan region. Copelatus oblitus Sharp, 1882, Cybister convexus Sharp, 1882, Hydro- vatus sinister Sharp, 1890 and Laccophilus latipennis Brancucci, 1983 are recorded for the first time in Thailand. The distributional range and ecology are discussed for each species. Photos of remarkable species and habitats in the dry and during the rainy season and a map are provided. Wisrutta Atthakor, Department of Biology, Faculty of Science, Srinakharinwirot University, Bangkok, Thailand; e-mail: [email protected] Lars Hendrich & Michael Balke, SNSB – Zoologische Staatssammlung, Münch- hausenstr. 21, 81247 München, Germany Narumon Sangpradub, Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand; and Centre of Excellence on Biodiversity, Bangkok, Thailand Introduction Descriptions and photographs of the localities, showing the different seasonality in many habitats, This present work is based on the results of the are provided. The publication will be another step “Sakaerat Biosphere Reserve Expedition, 2013-2015” forwards to an annotated checklist of the Dytiscidae carried out by the senior author.
    [Show full text]
  • Microsoft Outlook
    Joey Steil From: Leslie Jordan <[email protected]> Sent: Tuesday, September 25, 2018 1:13 PM To: Angela Ruberto Subject: Potential Environmental Beneficial Users of Surface Water in Your GSA Attachments: Paso Basin - County of San Luis Obispo Groundwater Sustainabilit_detail.xls; Field_Descriptions.xlsx; Freshwater_Species_Data_Sources.xls; FW_Paper_PLOSONE.pdf; FW_Paper_PLOSONE_S1.pdf; FW_Paper_PLOSONE_S2.pdf; FW_Paper_PLOSONE_S3.pdf; FW_Paper_PLOSONE_S4.pdf CALIFORNIA WATER | GROUNDWATER To: GSAs We write to provide a starting point for addressing environmental beneficial users of surface water, as required under the Sustainable Groundwater Management Act (SGMA). SGMA seeks to achieve sustainability, which is defined as the absence of several undesirable results, including “depletions of interconnected surface water that have significant and unreasonable adverse impacts on beneficial users of surface water” (Water Code §10721). The Nature Conservancy (TNC) is a science-based, nonprofit organization with a mission to conserve the lands and waters on which all life depends. Like humans, plants and animals often rely on groundwater for survival, which is why TNC helped develop, and is now helping to implement, SGMA. Earlier this year, we launched the Groundwater Resource Hub, which is an online resource intended to help make it easier and cheaper to address environmental requirements under SGMA. As a first step in addressing when depletions might have an adverse impact, The Nature Conservancy recommends identifying the beneficial users of surface water, which include environmental users. This is a critical step, as it is impossible to define “significant and unreasonable adverse impacts” without knowing what is being impacted. To make this easy, we are providing this letter and the accompanying documents as the best available science on the freshwater species within the boundary of your groundwater sustainability agency (GSA).
    [Show full text]
  • Mirasorvone: a Masked 20-Ketopregnane from the Defensive Secretion of a Diving Beetle (Thermonectus Marmoratus) (Steroids͞hemiketal͞dytiscidae)
    Proc. Natl. Acad. Sci. USA Vol. 95, pp. 2733–2737, March 1998 Chemistry Mirasorvone: A masked 20-ketopregnane from the defensive secretion of a diving beetle (Thermonectus marmoratus) (steroidsyhemiketalyDytiscidae) JERROLD MEINWALD*, QING HUANG*, JAN VRKOCˇ*†,KITHSIRI B. HERATH*, ZHI-CAI YANG*, FRANK SCHRODER¨ *, ATHULA B. ATTYGALLE*, VIKRAM K. IYENGAR‡,RANDY C. MORGAN§, AND THOMAS EISNER‡ *Department of Chemistry and ‡Section of Neurobiology and Behavior, Cornell University, Ithaca, NY 14853; and §The Insectarium, Cincinnati Zoo and Botanical Gardens, Cincinnati, OH 45220 Contributed by Jerrold Meinwald, December 29, 1997 ABSTRACT The sunburst diving beetle, Thermonectus marmoratus, ejects a milky fluid from its prothoracic defensive glands when disturbed. Two major volatile components of this secretion are steroids; cybisterone (structure 7) constitutes about 20% of the volatiles, and a new steroid, mirasorvone, about 50%. Mirasorvone is assigned an 18-oxygenated preg- nane structure (structure 9) on the basis of extensive spec- troscopic data. Although no 18-oxygenated steroid has been described previously from an insect source, a closely related hormone with mineralocorticoid activity, 18-hydroxydeoxy- 1 corticosterone (structure 13), has been isolated from the have studied the defensive chemistry of Thermonectus mar- adrenal glands of rats. moratus, an aposematic dytiscid beetle recently named the ‘‘sunburst diving beetle’’ (12) (Fig. 1), and report the chemical In the mind of the general public, steroids loom large. Consider characterization of two steroida1 components from the secre- cholesterol (1). Millions of Americans are aware of their blood tion of its prothoracic defensive glands. cholesterol levels, and many take cholesterol biosynthesis inhibitors regularly. Steroidal oral contraceptives have been responsible for a quiet social revolution, and closely related MATERIALS AND METHODS steroids are widely used for the relief of postmenopausal The Beetle.
    [Show full text]