Two New Species of Oripodoidea (Acari: Oribatida) from Vietnam S.G
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Two new species of Oripodoidea (Acari: Oribatida) from Vietnam S.G. Ermilov, A.E. Anichkin To cite this version: S.G. Ermilov, A.E. Anichkin. Two new species of Oripodoidea (Acari: Oribatida) from Vietnam. Acarologia, Acarologia, 2011, 51 (2), pp.143-154. 10.1051/acarologia/20111998. hal-01599977 HAL Id: hal-01599977 https://hal.archives-ouvertes.fr/hal-01599977 Submitted on 2 Oct 2017 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Distributed under a Creative Commons Attribution - NonCommercial - NoDerivatives| 4.0 International License ACAROLOGIA A quarterly journal of acarology, since 1959 Publishing on all aspects of the Acari All information: http://www1.montpellier.inra.fr/CBGP/acarologia/ [email protected] Acarologia is proudly non-profit, with no page charges and free open access Please help us maintain this system by encouraging your institutes to subscribe to the print version of the journal and by sending us your high quality research on the Acari. Subscriptions: Year 2017 (Volume 57): 380 € http://www1.montpellier.inra.fr/CBGP/acarologia/subscribe.php Previous volumes (2010-2015): 250 € / year (4 issues) Acarologia, CBGP, CS 30016, 34988 MONTFERRIER-sur-LEZ Cedex, France The digitalization of Acarologia papers prior to 2000 was supported by Agropolis Fondation under the reference ID 1500-024 through the « Investissements d’avenir » programme (Labex Agro: ANR-10-LABX-0001-01) Acarologia is under free license and distributed under the terms of the Creative Commons-BY-NC-ND which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original author and source are credited. Acarologia 51(2): 143–154 (2011) DOI: 10.1051/acarologia/20111998 TWO NEW SPECIES OF ORIPODOIDEA (ACARI: ORIBATIDA) FROM VIETNAM Sergey G. ERMILOV1* and Alexander E. ANICHKIN2 (Received 12 January 2011; accepted 07 February 2011; published online 30 June 2011) 1 Laboratory of Entomology, Center of Independent Examinations-NN, Gagarin 97, 603107 Nizhniy Novgorod, Russia. [email protected] ( *corresponding author) 2 Institute of Ecological and Evolutionary Problems, Russian Academy of Sciences, Lenin 33, 119071 Moscow, Russia; Joint Russian-Vietnamese Research and Technological Center, Southern Branch, Dstr. 10, Str. 3/2, 3, Ho Chi Minh City, Vietnam. [email protected] ABSTRACT — Two new species of oribatid mites of the superfamily Oripodoidea, Peloribates spiniformis n. sp. and Zygoribatula prima n. sp., are described from dark loamy soil of Lagerstroemia forest of Cat Tien National Park (southern Vietnam). Peloribates spiniformis n. sp. can be included in the Peloribates species group having very short notogastral setae, however it clearly differs from other species by having interlamellar setae that are medio-distally dilated (setiform or spiniform in the other species). Zygoribatula prima n. sp. is the first species of Zygoribatula recorded from Vietnam; it can be included in the species group having a striate notogaster, but differs from other species by the specific localization of the striae. Peloribates rangiroaensis Hammer, 1972 is recorded for the first time in Vietnam. An identification key to all Vietnamese species of Peloribates is presented. KEYWORDS — oribatid mites; new species; record; Peloribates; Zygoribatula; Vietnam INTRODUCTION P. stellatus Balogh and Mahunka, 1967 (Balogh and Mahunka 1967; Golosova 1983; Mahunka 1988; In the course of faunistic studies of the oribatid Krivolutskiy et al. 1997; Vu 2007). Peloribates pseudo- fauna of Cat Tien National Park (southern Vietnam) porosus and P. stellatus are currently recorded only we found representatives of two new species of from Vietnam. Peloribates kaszabi was known only the superfamily Oripodoidea, one belonging to the from Vietnam, until it was recently found in In- genus Peloribates Berlese, 1908 and the other to Zy- dia (Bayartogtokh and Chatterjee 2010). Peloribates goribatula Berlese, 1916. gressitti is currently recorded from Vietnam and the Peloribates is a large genus of the family Hap- Philippines. lozetidae that was proposed by Berlese (1908) with Oribata peloptoides Berlese, 1888 as type species. In addition to the new species, we also have Currently, it comprises more than 80 species that found the first representatives of Peloribates ran- collectively have a cosmopolitan (except Antarc- giroaensis Hammer, 1972 known from Vietnam. This tica) distribution. The known Vietnamese fauna of species is distributed in the eastern Palearctic re- Peloribates has included four species: P. pseudoporo- gion, southeastern China and Polynesia (Subías, sus Balogh and Mahunka, 1967, P. kaszabi Mahunka, 2004, online version 2010). Specimens are collected 1988, P. gressitti Balogh and Mahunka, 1967, and in the same place where new species are collected http://www1.montpellier.inra.fr/CBGP/acarologia/ 143 ISSN 0044-586-X (print). ISSN 2107-7207 (electronic) Ermilov S. G. and Anichkin A. E. (see below "Material examined" sections). surface foveolate; interlamellar setae medio-distally Zygoribatula is a large genus of the family Orib- dilated, barbed; sensilli with long stalk and oblong atulidae that was proposed by Berlese (1916) with head, rounded distally, with small barbs; 14 pairs of Oribatula connexa Berlese, 1904 as type species. short, spiniform, straight, smooth notogastral setae; Currently, it comprises more than 90 species claws of legs finely serrated on dorsal edges. that collectively have a cosmopolitan distribution. Description For the Vietnamese fauna Zygoribatula has been recorded once, represented by an unidentified Measurements — Body length 340 (holotype), species (Golosova 1983). Thus, the new species is 332 – 348 (mean 337, three paratypes); body width the first identified member of Zygoribatula recorded 182 (holotype), 182 (three paratypes). for Vietnam. Integument — Body color light brown to brown. Surface of body, leg femora and trochanters III, IV MATERIALS AND METHODS foveolate. Foveolae oval or round (up to 10 in length or diameter) (Figure 4). Collection localities and habitats of the new species are characterized in the "Material examined" sec- Prodorsum — (Figure 1A; Figure 2A–F). Ros- tions. Specimens were studied in lactic acid, trum broadly rounded anteriorly. Lamellae longer mounted in temporary cavity slides for the duration than half of prodorsum, distally with weakly devel- ro of the study and then stored in 70% alcohol in tubes. oped lateral tooth. Rostral ( , 41 – 45) and lamel- lar (le, 53 – 61) setae setiform, barbed. Interlamel- All body measurements are presented in mi- lar setae (in, 20) medio-distally dilated, barbed. crometers. Body length was measured in lateral Exobothridial setae (ex, 8) setiform, slightly thick- view, from the tip of the rostrum to the posterior ened, barbed. Sensilli (ss, 52 – 60) with long stalk edge of the ventral plate, to avoid discrepancies (28 – 32) and oblong head (24 – 28), rounded dis- caused by different degrees of notogastral disten- tally, with small barbs. sion. Notogastral width refers to the maximum width in dorsal aspect. Length of body setae was Notogaster — (Figure 1A). Dorsosejugal su- measured in lateral aspect. Some paratypes of each ture weakly developed, hardly visible. Pteromor- species were dissected for detailed studies (gnatho- phae short, movable. Fourteen pairs of short (4 soma, ovipositor, legs). – 6), spiniform, straight, smooth notogastral setae. Four pairs of minute sacculi, visible with difficulty. Formulae for leg setation are given in paren- Opisthonotal gland opening (gla) and lyrifissures theses according to sequence of trochanter-femur- developed in typical arrangement for genus. genu-tibia-tarsus (famulus included). Formulae for leg solenidia are given in square brackets according Lateral part of body — (Figure 2A). Tutorium to sequence of genu-tibia-tarsus. (tu) long. Sublamellar line weakly developed. Sub- lamellar areae porosae (Al, 8 – 10) rounded or oval. Pedotecta I and II small. Discidia (di) triangular. DESCRIPTIONS OF NEW SPECIES Anogenital region — (Figure 1B; Figure 2G, H). Peloribates spiniformis n. sp. Two pairs anal (an1, an2, 4), three pairs adanal (ad1 (Figures 1 – 3) – ad3, 4 – 6), one pair aggenital (ag, 4 – 6) and five pairs of genital setae (g – g 4) slightly thick- With characters of Peloribates as summarized by 1 5 ened, smooth. Lyrifissures iad in typical position for Corpuz-Raros (1981) and Balogh and Balogh (1984, genus. 1992). Epimeral region — (Figure 1B). Apodemes 2, se- Diagnosis jugal, 3 and circumpedal carina well-developed. All This species is characterized by the following com- epimeral setae setiform, weakly barbed; setae 3c bination of traits: body size 332 – 348 x 182; body longest (24), 3a shortest (6). 144 Acarologia 51(2): 143–154 (2011) FIGURE 1: Peloribates spiniformis n. sp. A – dorsal view, legs removed; B – ventral view, legs, palps and setae of subcapitulum removed. Scale bar 100 µm. Gnathosoma — (Figure 3A–C). Subcapitulum (1-5-3-4-15) [1-1-2], III (2-3-1-3-15) [1-1-0], IV (1-2-2- longer than