(Hymenoptera: Formicidae) from Kochi Prefecture, Japan, with a Description Of
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Newly Discovered Sister Lineage Sheds Light on Early Ant Evolution
Newly discovered sister lineage sheds light on early ant evolution Christian Rabeling†‡§, Jeremy M. Brown†¶, and Manfred Verhaagh‡ †Section of Integrative Biology, and ¶Center for Computational Biology and Bioinformatics, University of Texas, 1 University Station C0930, Austin, TX 78712; and ‡Staatliches Museum fu¨r Naturkunde Karlsruhe, Erbprinzenstr. 13, D-76133 Karlsruhe, Germany Edited by Bert Ho¨lldobler, Arizona State University, Tempe, AZ, and approved August 4, 2008 (received for review June 27, 2008) Ants are the world’s most conspicuous and important eusocial insects and their diversity, abundance, and extreme behavioral specializations make them a model system for several disciplines within the biological sciences. Here, we report the discovery of a new ant that appears to represent the sister lineage to all extant ants (Hymenoptera: Formicidae). The phylogenetic position of this cryptic predator from the soils of the Amazon rainforest was inferred from several nuclear genes, sequenced from a single leg. Martialis heureka (gen. et sp. nov.) also constitutes the sole representative of a new, morphologically distinct subfamily of ants, the Martialinae (subfam. nov.). Our analyses have reduced the likelihood of long-branch attraction artifacts that have trou- bled previous phylogenetic studies of early-diverging ants and therefore solidify the emerging view that the most basal extant ant lineages are cryptic, hypogaeic foragers. On the basis of morpho- logical and phylogenetic evidence we suggest that these special- EVOLUTION ized subterranean predators are the sole surviving representatives of a highly divergent lineage that arose near the dawn of ant diversification and have persisted in ecologically stable environ- ments like tropical soils over great spans of time. -
Regulation of Queen Development Through Worker Aggression in A
Behavioral Ecology 2 Behavioral Ecology doi:10.1093/beheco/ars062 Advance Access publication 26 April 2012 stress may be used to inhibit queen development in wasps (25 °C, 12:12 light/day) and fed live crickets (Acheta domesticus) (Jeanne 2009), and observations of antennal drumming in Po- twice per week, which workers paralyze in the foraging arena Original Article listes fuscatus have been linked to regulation of caste develop- and bring into the nest. All colonies used in this experiment ment (Suryanarayanan et al. 2011). In the ant Myrmica, workers were headed by gamergates (mated reproductive workers). have been observed biting queen-destined larvae at the end of the breeding season, piercing the larval cuticle, and a portion JH application and induction of queen development Regulation of queen development through of these larvae revert to worker development (Brian 1973). In the context of these previous studies, we hypothesized that To confirm that JHA application could induce queen develop- worker aggression in a predatory ant mechanical stress may serve as a mechanism to regulate queen ment in H. saltator, we tested the effect of topical application development in ants, particularly species from the relatively of JHA on final instar larvae (fourth instar). Twenty to thirty basal subfamily Ponerinae whose members share a number of fourth instar larvae (4.1–6.5 mm in length) were taken from April 26 ancestral characters in morphology and behavior that may limit a single mature colony and divided evenly between 2 groups Clint A. Penick and Ju¨rgen Liebig worker control over larval feeding (Schmidt 2009). -
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ISSN 1997-3500 Myrmecological News myrmecologicalnews.org Myrmecol. News 30: 27-52 doi: 10.25849/myrmecol.news_030:027 16 January 2020 Original Article Unveiling the morphology of the Oriental rare monotypic ant genus Opamyrma Yamane, Bui & Eguchi, 2008 (Hymeno ptera: Formicidae: Leptanillinae) and its evolutionary implications, with first descriptions of the male, larva, tentorium, and sting apparatus Aiki Yamada, Dai D. Nguyen, & Katsuyuki Eguchi Abstract The monotypic genus Opamyrma Yamane, Bui & Eguchi, 2008 (Hymeno ptera, Formicidae, Leptanillinae) is an ex- tremely rare relictual lineage of apparently subterranean ants, so far known only from a few specimens of the worker and queen from Ha Tinh in Vietnam and Hainan in China. The phylogenetic position of the genus had been uncertain until recent molecular phylogenetic studies strongly supported the genus to be the most basal lineage in the cryptic subterranean subfamily Leptanillinae. In the present study, we examine the morphology of the worker, queen, male, and larva of the only species in the genus, Opamyrma hungvuong Yamane, Bui & Eguchi, 2008, based on colonies newly collected from Guangxi in China and Son La in Vietnam, and provide descriptions and illustrations of the male, larva, and some body parts of the worker and queen (including mouthparts, tentorium, and sting apparatus) for the first time. The novel morphological data, particularly from the male, larva, and sting apparatus, support the current phylogenetic position of the genus as the most basal leptanilline lineage. Moreover, we suggest that the loss of lancet valves in the fully functional sting apparatus with accompanying shift of the venom ejecting mechanism may be a non-homoplastic synapomorphy for the Leptanillinae within the Formicidae. -
Pérez-González Ok Layout 1
ANNALES ZOOLOGICI (Warszawa), 2020, 70(2): 289-304 HIGHLIGHTING THE ELUSIVE: NEW FINDINGS AND A REDESCRIPTION OF THE RARE ANT LEPTANILLA PLUTONIA LÓPEZ, MARTÍNEZ ET BARANDICA, 1994, PRESENTING MORPHOLOGICAL NOVELTIES FOR THE GENUS SERGIO PÉREZ-GONZÁLEZ1,*, JOSÉ M. GÓMEZ-DURÁN2 and M. DOLORES MARTÍNEZ-IBÁÑEZ1 1Departamento de Biodiversidad, Ecología y Evolución, Unidad Docente de Zoología y Antropología Física, Facultad de Ciencias Biológicas, Universidad Complutense de Madrid, 28040, Madrid, Spain 2Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, Ctra. de La Coruña, km. 7.5, 28040 Madrid, Spain *Corresponding author: e-mail: [email protected] Abstract.— Leptanilla Emery, 1870 includes 47 species of strictly endogean ants, distributed through Africa, Europe, Asia and Australia, characterized by many peculiarities, such as their tiny size (between 1.0–2.5 mm long), lack of pigmentation, lack of eyes and very narrow elongate bodies. Queens are apterous and dichthadiigynes. Males have wings and eyes. Their lifestyles remain virtually unknown. The Western Mediterranean region hosts a high diversity, with 9 species in north Africa and 5 in the Iberian Peninsula. Recent sampling in Central Spain (Tortuero, Guadalajara province) led to the discovery of a colony of a large-sized Leptanilla species. This population can be assigned to L. plutonia, a species known from a single worker (the holotype) until now, easily distinguished from other Iberian species by its large size. These specimens allowed for a redescription of the species, also giving the first insights into its intraspecific variability and morphological structures not mentioned in the original description, such as the presence of a secondary labrum, large apodemes in the postpetiole or a promesosternal keel, among others. -
The Adaptive Significance of Phasic Colony Cycles in Army Ants
bioRxiv preprint doi: https://doi.org/10.1101/091934; this version posted December 6, 2016. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. 1 The adaptive significance of phasic colony cycles in army ants 2 3 Simon Garnier1 & Daniel J. C. Kronauer2 4 5 1Department of Biological Sciences, New Jersey Institute of Technology, Newark, NJ 07102, USA; 6 [email protected] 7 2Laboratory of Social Evolution and Behavior, The Rockefeller University, New York, NY 10065, USA; 8 [email protected] 9 10 Keywords: Dorylinae; Evolution; Foraging; Formicidae; Group predation; Modelling; Nomadism; 11 Reproductive cycle 12 1 bioRxiv preprint doi: https://doi.org/10.1101/091934; this version posted December 6, 2016. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. 13 Abstract: 14 Army ants are top arthropod predators in tropical forests around the world. The colonies of many army 15 ant species undergo stereotypical behavioral and reproductive cycles, alternating between brood care 16 and reproductive phases. In the brood care phase, colonies contain a cohort of larvae that are 17 synchronized in their development and have to be fed. In the reproductive phase larvae are absent and 18 oviposition takes place. Despite these colony cycles being a striking feature of army ant biology, their 19 adaptive significance is unclear. -
Synonymization of the Male-Based Ant Genus Phaulomyrma (Hymenoptera, Formicidae)
bioRxiv preprint doi: https://doi.org/10.1101/2020.08.28.272799; this version posted August 31, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. Phylogeny of the Male-Based Ant Genus Phaulomyrma 1 Synonymization of the male-based ant genus Phaulomyrma (Hymenoptera, Formicidae) 2 with Leptanilla based upon Bayesian total-evidence phylogenetic inference 3 Zachary H. Griebenow 4 Abstract 5 Although molecular data have proven indispensable in confidently resolving the phylogeny of 6 many clades across the tree of life, these data may be inaccessible for certain taxa. The resolution 7 of taxonomy in the ant subfamily Leptanillinae is made problematic by the absence of DNA 8 sequence data for leptanilline taxa that are known only from male specimens, including the 9 monotypic genus Phaulomyrma Wheeler & Wheeler. Focusing upon the considerable diversity 10 of undescribed male leptanilline morphospecies, the phylogeny of 38 putative morphospecies 11 sampled from across the Leptanillinae, plus an outgroup, is inferred from 11 nuclear loci and 41 12 discrete male morphological characters using a Bayesian total-evidence framework, with 13 Phaulomyrma represented by morphological data only. Based upon the results of this analysis 14 Phaulomyrma is synonymized with Leptanilla Emery, and male-based diagnoses for Leptanilla 15 that are grounded in phylogeny are provided, under both broad and narrow circumscriptions of 16 that genus. This demonstrates the potential utility of a total-evidence approach in inferring the 17 phylogeny of rare extant taxa for which molecular data are unavailable and begins a long- 18 overdue systematic revision of the Leptanillinae that is focused on male material. -
Evolution of the Army Ant Syndrome: the Origin and Long-Term Evolutionary Stasis of a Complex of Behavioral and Reproductive Adaptations
Evolution of the army ant syndrome: The origin and long-term evolutionary stasis of a complex of behavioral and reproductive adaptations Sea´ n G. Brady† Center for Population Biology and Department of Entomology, University of California, Davis, CA 95616 Edited by Bert Ho¨lldobler, University of Wu¨rzburg, Wu¨rzburg, Germany, and approved April 4, 2003 (received for review December 20, 2002) The army ant syndrome of behavioral and reproductive traits Dorylinae) and the other to the New World (Ecitoninae). The (obligate collective foraging, nomadism, and highly specialized prevailing view holds that the army ant syndrome originated queens) has allowed these organisms to become the premiere several times in independent lineages restricted to the New social hunters of the tropics, yet we know little about how or why World and Old World, respectively (3, 10). This polyphyly these strategies evolved. The currently accepted view holds that hypothesis, widely cited in the literature, is founded primarily on army ants evolved multiple times on separate continents. I gener- the assumption that army ants originated after the breakup of ated data from three nuclear genes, a mitochondrial gene, and Gondwana, and thus must have evolved independently on sep- morphology to test this hypothesis. Results strongly indicate that arate continents. If true, this would imply multiple origins of the suite of behavioral and reproductive adaptations found in army ant behavioral and reproductive adaptations, with their army ants throughout the world is inherited from a unique com- similarities due to convergence. mon ancestor, and did not evolve convergently in the New World I assessed the validity of the polyphyly hypothesis by using a and Old World as previously thought. -
The Internal Phylogeny of Ants (Hymenoptera: Formicidae)
Systemutic Entomology (1992) 17, 301-329 The internal phylogeny of ants (Hymenoptera: Formicidae) CESARE BARON1 URBANI, BARRY BOLTON” and PH 1 LIP s . WA RDt Zoological Institute of the University, Rheinsprung 9, CH-4051 Basel, Switzerland, *Department of Entomology, The Natural History Museum, Cromwell Road, London SW7 5BD, U.K., and ‘Department of Entomology, University of California, Davis, California 95616, U.S.A. Abstract. The higher phylogeny of the Formicidae was analysed using 68 characters and 19 taxa: the 14 currently recognized ant subfamilies plus 5 po- tentially critical infrasubfamilial taxa. The results justified the recognition of 3 additional subfamilies: Aenictogitoninae Ashmead (new status), Apomyrminae Dlussky & Fedoseeva (new status), and Leptanilloidinae Bolton (new subfamily). A second analysis on these better delimited 17 subfamilies resulted in 24 equally most parsimonious trees. All trees showed a basal division of extant Formicidae into two groups, the first containing (Myrmicinae, Pseudomyrmecinae, Notho- mynneciinae, Myrmeciinae, Formicinae, Dolichoderinae, Aneuretinae) and the second the remaining subfamilies. Clades appearing within these groups included the Cerapachyinae plus ‘army ants’, the Nothomyrmeciinae plus Myrmeciinae, the ‘formicoid’ subfamilies (Aneuretinae + Dolichoderinae + Formicinae), and the Old World army ants (Aenictinae + Aenictogitoninae + Doryline), but relationships within the last two groups were not resolved, and the relative positions of the Apomyrminae, Leptanillinae and Ponennae re- mained ambiguous. Moreover, a bootstrap analysis produced a consensus tree in which all branches were represented in proportions much lower than 95%. A reconstruction of the ground plan of the Formicidae indicated that the most specialized of all recent ants are the members of the subfamily Dorylinae and the least specialized ones are the monotypic Apomyrminae. -
Biology Department Radford University Radford, VA 24142
STINGS OF ANTS OF THE LEPTANILLINAE (HYMENOPTERA: FORMICIDAE) BY CHARLES KUGLER Biology Department Radford University Radford, VA 24142 INTRODUCTION Leptanilla is a rarely collected genus of tiny, subterranean ants that probably specialize on geophilomorpti centipedes (Masuko 1990). Because queens are dichthadiiform as in army ants of the Ecitoninae and Dorylinae, the Leptanillinae (Leptanilla plus some male-based genera) have often been considered relatives of those subfamilies (taxonomic history in Wheeler and Wheeler 1965). Masuko (1990) has shown that Leptanilla japonica has some legionary behaviors. Now, however, the subfamily is not uniformly legionary after Bolton (1990a) added the new genera Anom- alomyrma, Protanilla, and transferred in Apomyrma from the ponerine tribe Amblyoponini. With those additions, Bolton (1990a) initially proposed that leptanillines are the sister-group of the ponerines, but subsequent analysis made him revive the hypothesis that leptanillines are the sister-group of the doryline section (Bolton, 1990b). In this paper I test these alternative hypotheses using a previ- ously unexplored character system, the sting apparatus. The sting apparatus, pygidium and hypopygium were dissected from repre- sentatives of the three leptanilline tribes: Leptanillini (Leptanilla), Apomyrmini (Apomyrma) and Anomalomyrmini (Protanilla). Workers and queen of Leptanilla are compared. Phylogenetic 1This paper is dedicated to William L. Brown, Jr., to whom owe a great debt of gratitude for serving as my thesis advisor and mentor. Working in his lab was a pleasure and always interesting. deeply appreciate his support and encouragement throughout my career. Bill is a generous soul--always providing what he can with- out question, including room and board at Chez Brown when needed. -
Larval Hemolymph Feeding in the Ant <Emphasis Type="Italic">Leptanilla
Behavioral Ecology Behav Ecol Sociobiol (1989) 24:122132 and Sociobiology Springer-Verlag 1989 Larval hemolymph feeding in the ant Leptanilla japonica by use of a specialized duct organ, the "larval hemolymph tap" (Hymenoptera: Formicidae) K. Masuko Department of Cell Genetics, National Institute of Genetics, Mishima, Shizuoka-ken, 411 Japan Received July 18, 1988 / Accepted November 14, 1988 Summary. The larvae of the migratory Japanese 1978). In weaver ants (Oecophylla) and some spe- ant Leptanilla japonica Baroni Urbani have a spe- cies of Camponotus, Dendromyrmex, and Polyrha- cialized duct organ on each side of the 4th abdomi- chis, the larvae contribute silk for nest construction nal segment. Behavioral and histological studies (H611dobler and Wilson 1983). Also, and more have shown that the adult ants are able to imbibe generally in social insects, individuals of all imma- hemolymph directly from the larval body cavity ture stages serve as a food reservoir during hard through these organs, each of which is referred times. Finally, the larvae of some ants and social to here as a "larval hemolymph tap." Laboratory wasps produce proctodeal or stomodeal secretions observations further confirm that larval hemo- that are ingested by adults. This last "labor" by lymph feeding (LHF) is the sole source of nutrient ant larvae as media in food exchange has long been for the queens. L. japonica is cyclical in its brood discussed in connection with special larval organs production. All larvae in a colony develop in con- presumed to serve this function. Thus, the larvae cert, and when they are mature, the queen per- of Tetraponera and Crematogaster have remark- forms much active LHF on them. -
Discovery of the Rare Ant Genus Leptanilla (Hymenoptera: Formicidae) in Macau with Description of Leptanilla Macauensis Sp
ASIAN MYRMECOLOGY Volume 10, e010001, 2018 ISSN 1985-1944 | eISSN: 2462-2362 © Chi-Man Leong, Seiki Yamane DOI: 10.20362/am.010001 and Benoit Guénard Lost in the city: discovery of the rare ant genus Leptanilla (Hymenoptera: Formicidae) in Macau with description of Leptanilla macauensis sp. nov. Chi-Man Leong1, Seiki Yamane2 and Benoit Guénard3* 1Department of Entomology, National Taiwan University, No. 1, Roosevelt Road, Section 4, Taipei, 106 Taiwan 2Kagoshima University Museum, Kôrimoto 1-21-30, Kagoshima-shi, 890-0065 Japan 3School of Biological Sciences, University of Hong Kong, Kadoorie Biological Sciences Building, Pok Fu Lam Road, Hong Kong SAR, China *Corresponding author: [email protected] ABSTRACT. The rare ant genus Leptanilla was discovered in Macau SAR, China for the first time, which represents the second record for this genus in southeastern China. Through the detailed examination, the new species Leptanilla macauensis sp. nov. described here has unique character conditions particularly in the structure of the clypeus and subpetiolar process. Moreover, the discovery of L. macauensis sp. nov. within an island of vegetation surrounded by a dense urbanized matrix illustrates future possibilities for the discovery of new species in South East Asia, including within heavily disturbed environments. Keywords: Leptanillinae, Leptanilla, Macao, new species, urbanized habitat INTRODUCTION specialized duct organs. The cryptobiotic and subterranean habits of Leptanilla ants limits the The ant genus Leptanilla Emery, 1870 consists collection of the worker and queen castes (Bar- of 46 species globally (AntCat 2017). This genus oni Urbani 1977; Bolton 1990; Wong & Guénard belongs to the subfamily Leptanillinae, which 2016), with the use of specific subterranean sam- is considered as one of the early ant lineages pling methods increasing the capture of Leptanil- (Brady et al. -
Ulysséa, M.A. & Brandão, C.R.F. 2012. a New Ant Species Of
Ulysséa, M.A. & Brandão, C.R.F. 2012. A new ant species of Oxyepoecus, with the description of Oxyepoecus browni gyne and new records for the genus. Papéis Avulsos de Zoologia 52: 167-173. Umphrey, G.J. 1996. Morphometric discrimination among sibling species in the fulva-rudis-texana complex of the ant genus Aphaenogaster. Canadian Journal of Zoology 74: 529-559. [Mar.1996 issue.] Valcurone, M.D. & Fanfani, A. 1985. Investigations on Formicidae: Pavan's gland and other glands of the gaster in Dolichoderinae. Pubblicazioni dell'Istituto di Entomologia dell'Università di Pavia 31: 1-20. [1985.] Valenzuela-González, J.E., Pérez-Toledo, G.R. & García-Martínez, M.A. 2017. Adelomyrmex dorae sp. nov. Garcia-Martinez: a new species supported by parsimony analysis of morphological characters. Transactions of the American Entomological Society 143: 713- 727. Van Boven, J.K.A. 1946. Le mâle de Plagiolepis vindobonensis Lomn. Natuurhistorisch Maandblad 35: 9-10. [28.ii.1946.] Van Boven, J.K.A. 1947. Liste de détermination des principales espèces de fourmis belges. Bulletin et Annales de la Société Entomologique de Belgique 83: 163-190. [3.v.1947.] Van Boven, J.K.A. 1959. Vliesvleugelige insekten - Hymenoptera. VI. Angeldragers (Aculeata), Mieren (Formicidae). Koninklijke Nederlandse Natuurhistorische Vereniging, Wetenschappelijke Mededelingen 30: 32 pp. Van Boven, J.K.A. 1967. La femelle de Dorylus fimbriatus et termitarius. Natuurhistorisch Maandblad 56: 55-60. [26.iv.1967.] Van Boven, J.K.A. 1968. La reine de Dorylus (Anomma) kohli Wasmann. Naturaliste Canadien 95: 731-739. [(30).vi.1968.] Van Boven, J.K.A. 1970a. Myrmica faniensis, une nouvelle espèce parasite.