Кавказский энтомол. бюллетень 14(2): 165–169 © CAUCASIAN ENTOMOLOGICAL BULL. 2018


A revision of the genus Ascelosodis L. Redtenbacher, 1868 (Coleoptera: Tenebrionidae: Pimeliinae: Edrotini) of Pamir

Обзор рода Ascelosodis L. Redtenbacher, 1868 (Coleoptera: Tenebrionidae: Pimeliinae: Edrotini) Памира

© S.N. Chigray

© С.Н. Чиграй

Saint Petersburg State University, 16th line of Vasilevskiy Island, 29, St Petersburg 199178 Russia. E-mail: s.chigray@mail.ru

Санкт-Петербургский государственный университет, 16-я линия Васильевского острова, 29, Санкт-Петербург 199178 Россия

Key words: Coleoptera, Tenebrionidae, Ascelosodis, revision, new species, Pamir.

Ключевые слова: Coleoptera, Tenebrionidae, Ascelosodis, ревизия, новый вид, Памир.


Abstract. A taxonomic review of the genus Ascelosodis L. Redtenbacher, 1868 (Tenebrionidae: Pimeliinae: Edrotini) of Pamir is given. The tribal placement of the genus is corrected (not Tentyriini as in Catalogue of Palaearctic Coleoptera 2008 and not Erymetopini as in Chinese revisions). Two species of the genus are known from Pamir: A. concinna Bates, 1879 (name is corrected from masculine to feminine) from Eastern Pamir: Tajikistan, Afghanistan (new record) and China (new record) and A. abdurakhmanovi sp. n. from Western Pamir (Tajikistan). The new species differs from

A. concinna by the body being completely setose ventrally and bare dorsally, mentum with transverse line of 10 long yellowish setae, form of pronotum, setose trochanters, and pro- and mesotibiae not fossorial, narrow. A redescription of A. concinna and a map of the distribution of both species are given.

Резюме. Дан таксономический обзор рода Ascelosodis L. Redtenbacher, 1868 (Tenebrionidae: Pimeliinae: Edrotini) Памира. Исправлено систематическое положение рода (не относится к трибе Tentyriini, как в каталоге палеарктических жесткокрылых 2008 года, и не относится к трибе Erymetopini, как в китайских ревизиях). Из Памира известно два вида рода: A. concinna Bates, 1879 (видовое название изменено с мужского на женский род) из Восточного Памира (Таджикистан, Афганистан (первое указание для страны) и Китая (первое указание для страны)) и A. abdurakhmanovi sp. n. из Западного Памира (Таджикистан). Новый вид отличается голым сверху и полностью опушенным снизу телом, ментумом с поперечным рядом длинных светлых щетинок, формой переднеспинки и узкими не копательными передними и средними голенями. Приводятся переописание A. concinna и карта распределения двух видов.

The genus Ascelosodis was described by Redtenbacher [1868] with the type species A. serripes (monotype). Ascelosodis is a small genus of tenebrionid beetles,


image

DOI: 10.23885/181433262018142-165169

the only Palaearctic group of the tribe Edrotini Casey, 1907 with 26 species is distributed in higher altitudes of the Tibetan Plateau, Pamir, Kunlun, Paropamisus and Himalayas [Ren, Shi, 2006]. One species was known from Middle Asia and two from Afghanistan. Other species of the tribe Edrotini are distributed in the New World [Bousquet et al., 2018].

The greatest contribution to the knowledge of Ascelosodis was made by Bates [1879], who described six species which were collected by Dr Stoliczka during the Forsyth Expedition to Kashgar in 1873–1874. Later, Fairmaire [1891] described one additional species from India. Faunistic works containing new information about the composition and distribution of Ascelosodis from Middle Asia were published by Reitter [1896, 1915]. Blair [1923] described five species of the genus based on results of the second expedition to Everest. Koch [1948] described two species from India and China. Kaszab [1959, 1961, 1965, 1968] published some faunistic works with descriptions of five species and gave new information on the ecology and distribution of Ascelosodis [Kaszab et al., 1978]. A taxonomic review of Ascelosodis with the description of six Chinese species and a key to all known species was made by Ren and Shi [2006, 2007].

Doyen [1993] transferred the genus Ascelosodis from the tribe Tentyriini Solier, 1835 to the tribe Eurymetopini Casey, 1907 based on the female internal tract, ventral spicula and other morphological characters, and Ren and Shi [2006] mentioned it, but in the Catalogue of Palaearctic Coleoptera [Löbl et al., 2008] the genus Ascelosodis still belongs to the tribe Tentyriini. Bouchard et al. [2005] placed Eurymetopini as a junior synonym of Edrotini Lacordaire, 1859. As a result, the genus Ascelosodis belongs to the tribe Edrotini.

A review of the genus Ascelosodis from Pamir with the description of a new species is presented below.

Material examined is located in the Zoological Institute of the Russian Academy of Sciences (ZIN, St Petersburg, Russia).


image

Figs 1–6. Ascelosodis spp., habitus and details of structure.

1–3 – A. concinna: 1 – dorsal view, 2 – ventral view, 3 – details of head and pronotum; 4–6 – A. abdurakhmanovi sp. n.: 4 – dorsal view, 5 – ventral view, 6 – head and pronotum.

Рис. 1–6. Ascelosodis spp., общий вид и детали строения.

1–3 – A. concinna: 1 – вид сверху, 2 – вид снизу, 3 – голова и переднеспинка; 4–6 – A. abdurakhmanovi sp. n.: 4 – вид сверху, 5 – вид снизу, 6 – голова и переднеспинка.


Ascelosodis сoncinna Bates, 1879 (Figs 1–3, 7–13, 17, 19)

Bates, 1879: 468; Reitter, 1896: 303 (Orocina semenowi); Blair,

1923: 281; Koch, 1948: 77; Kaszab, 1959: 359; 1968: 51; Doyen,

1993: 480; Ren, Shi, 2007: 539, 540.

Material. Tajikistan: 2♂, 6♀, Issyk-bash, Aksu River, 12.07.1888 (leg. B.L. Grombchevskij); 3♂, 4♀, Darvaz, Aktash-Ravat, Aksu River, 13100ʹ f, 30.07.1888 (leg. B.L. Grombchevskij); 32♂, 35♀, Pamir, 1.10.1888 (leg. B.L. Grombchevskij); 1♂, Taldyk-su River, Alay, 14.07.1895 (leg. S.I. Korzhinskij); 2♀, Pamir, Rangkul Lake, 1897 (leg. A.N. Kaznakov); 1♀, Toguz-bulak, 3000 m, 23.06.1904 (leg. G.G. Jakobson); 1♀, Pamir, Karakul Lake, 27–28.06.1906 (leg. Horev); 2♀, Aksu River, 3700 m, 7.06.1909 (leg. G.G. Jakobson); 1♀, Pamirskiy post (now Murgab), 10.06.1909 (leg. G.G. Jakobson); 1♂, 1♀, Kaydatash pass, 3700 m, 15.06.1909 (leg. G.G. Jakobson); 2♀, Pamir, Mazar-tepe, 1.07.1909 (leg. G.G. Jakobson); 2♂, 4♀, Pamir, near Zorkul Lake, 3600 m, 2.07.1909 (leg. G.G. Jakobson); 24♂, 29♀, Pamir, northeast coast of Karakul Lake, 6–11.07.1928 (leg.

A.N. Reichardt); 3♂, Pamir, Karakul Lake, 6.08.1928 (leg. E.F. Rozmirovich); 5♀, Shorkul Lake (Zorkul), under teresken, 11.07.1936 (leg. A.A. Saakyan); 2♂, 2♀, Chechekty, under teresken, 12.07.1936 (collector unknown); 5♀, Murgab, under teresken, 15.07.1936 (collector unknown); 1♂, 1♀, Pamir,

Bash-chumbez, 17.07.1936 (leg. A.A. Saakyan); 4♂, 8♀, Pamir, Karakul, under teresken, 1.07.1948 (leg. A.N. Kirichenko); 1♂, Pamir, Balyandkiik River, Zulumart River mouth, 6.08.1958 (K.B. Gorodkov); 1♀, Pamir, middle flow of Western Pshart River, 5 km from mouth of Donan-Kayindy River, 3700 m, semidesert, 8.07.1958 (leg. K.B. Gorodkov); 1♀, on the border of Western and Eastern Pamir, under stones, 6.07.1960 (leg. I.K. Lopatin); 8♂, 8♀, E Pamir, Aksu River, Shaymak, 8.07.1960 (leg. I.K. Lopatin); 5♂, 10♀, Pamir, Zor (Zorkul) 4000 m, under teresken, 9.07.1960 (leg.

A.V. Bogachev); 2♂, 2♀, Pamir, Chechekty, 4000 m, under stones, 25.07.1960 (leg. I. Lindt); 9♂, 5♀, near Kizil-Rabat, 4100 m, 27.07.1960 (leg. I. Lindt); 4♂, 6♀, Pamir, Rangkul Lake, 3.08.1960 (leg. I.K. Lopatin). China/Tajikistan: 6♂, 4♀, Sary-Kol Ridge, Chinese border of Pamir, 4300 m, 8.07.1928 (A.N. Reichardt). China: 6♂, 4♀, Pamir, western slope of Sary-Kol Ridge, 28.07.1960 (leg. I. Lindt). Afghanistan: 18♂, 9♀, Vakhan, 3.08.1888 (leg. B.L. Grombchevskij).

Redescription. Male. Body robust, black, antennae and legs reddish-brown, body bare dorsally and covered with short yellowish setae ventrally only on the surface of prothoracic hypomera, lateral sides of elytra and legs. Anterior margin of frontoclypeus slightly rounded in middle and with deep emargination on sides. Genae weakly evenly rounded, not sinuate. Head widest at genal level. Ratio of maximal width of head to distance between eyes 1.1. Antennae


short, with last apical antennomere reaching basal third of pronotum. Ratio of length (width) of antennomeres II–XI: 0.4(0.2) : 0.5(0.2) : 0.4(0.2) : 0.3(0.2) : 0.3(0.2) : 0.3(0.2) : 0.3(0.2) : 0.3(0.2) :

0.3(0.2) : 0.3(0.2). Punctation of disc fine and sparse (puncture diameter 1.5–2 times as wide as distance between punctures). Vertex with coarse and moderately dense punctures (puncture diameter subequal to distance between punctures). Mentum with deep triangular emargination in middle of anterior margin, with coarse and moderately dense punctation (puncture diameter subequal to distance between punctures), without setae or with 1–2 setae.

Pronotum transverse (1.7 times as wide as long), widest in middle, 1.3 times as wide as head. Ratio of pronotal width at anterior margin, in middle and at base 5 : 6 : 5.5. Anterior margin of pronotum widely emarginate, base widely rounded in middle. Lateral margins of pronotum rounded with sinuate middle margins, not sinuate at base. Anterior angles of pronotum acute, projected, posterior angles obtuse. All margins of pronotum beaded, bead of anterior margin smooth in middle. Disc of pronotum moderately convex, without depression in basal part. Punctation of disc fine and sparse (puncture diameter 1.5–2 times as wide as distance between punctures). Outer margin of prothoracic hypomera with transverse wrinkles, rest of surface with coarse, moderately dense punctures (puncture diameter subequal to distance between punctures). Prosternal process laminar, protruded, laterally acute, not beaded, without longitudinal depression. Prosternum with rows of narrow regularly depressed cicatricose foveae.

Elytra with wrinkles on surface, moderately elongate (1.3 times as long as wide), slightly convex, 3 times longer and

1.3 times wider than pronotum, 1.7 times wider than head. Elytra without striae, with very fine, sparse punctation (puncture diameter 2–3 times as wide as distance between punctures), apical half of elytra with almost invisible punctation. Epipleura smooth. Mesoventrite with rasp-like foveae. Metaventrite with fine, moderately dense punctation (puncture diameter subequal to distance between punctures).

Abdominal ventrites with fine and sparse punctation (puncture diameter 1.5–3 times as wide as distance between punctures). Abdominal ventrites 1 and 2 completely beaded laterally, ventrite 3 beaded only anteriorly, ventrite 4 beaded on less than half its surface, ventrite 5 not beaded.

Legs short. All trochanters without long yellowish setae. Anterior tibiae depressed along dorsal surface of outer margin. Pro- and mesotibiae greatly expanded and extended into a tooth at apex, metatibiae slightly expand to apex. Ratio of femur/ tibia/tarsus: 3 : 2 : 1.5 in fore legs, 3.5 : 2.5 : 2 in middle legs, and

3.5 : 4 : 2.5 in hind legs.

Body length 7–8.5 mm, width 3.5–4 mm.

Distribution. Tajikistan, Afghanistan, China (Eastern Pamir). New record for Afghanistan and China (Fig. 19).

Ascelosodis abdurakhmanovi sp. n.

(Figs 4–6, 14–16, 18, 19)

Material. Holotype, ♀, and 1 paratype (both in ZIN) with labels: “Tajikistan, Obikhingou Riv., near Tavil-Dara, 3.III.1983, V. Prasolov leg.”, “Ascelosodis sp. n., det. M.V. Nabozhenko”.

Description. Female. Body robust, black, antennae and legs reddish-brown, body bare dorsally and completely covered with short yellowish setae ventrally. Anterior margin of frontoclypeus slightly rounded in middle and with deep emargination on sides. Genae weakly evenly rounded, not sinuated. Head widest at genal level. Ratio of maximal width of head to distance between eyes 1.1. Antennae short, with last apical antennomere reaching basal third of pronotum. Ratio of length (width) of antennomeres II–XI: 0.4(0.3) : 0.7(0.3) : 0.5(0.3) : 0.4(0.3) : 0.4(0.3) : 0.4(0.3) : 0.4(0.3) :

0.4(0.4) : 0.4(0.4) : 0.5(0.4). Punctation of disc fine and sparse (puncture diameter 1.5–2 times as wide as distance between punctures). Vertex with coarse and moderately dense weakly rasp-


image

Figs 7–16. Ascelosodis spp., details of structure.

7–13 – A. concinna: 7 – tegmen, 8 – penis, 9 – gastral spicula, 10 – inner sternite VIII, 11 – ovipositor, ventral view, 12 – ovipositor, dorsal view, 13 – ventral spicula; 14–16 – A. abdurakhmanovi sp. n.: 14 – ovipositor, ventral view, 15 – ovipositor, dorsal view, 16 – ventral spicula. Scale bars 1 mm.

Рис. 7–16. Ascelosodis spp., детали строения.

7–13 – A. concinna: 7 – тегмен, 8 – пенис, 9 – гастральная спикула, 10 – VIII внутренний стернит, 11 – яйцеклад, вентрально, 12 – яйцеклад, дорсально, 13 – вентральная спикула; 14–16 – A. abdurakhmanovi sp. n.: 14 – яйцеклад, вентрально, 15 – яйцеклад, дорсально, 16 – вентральная спикула. Масштабные линейки – 1 мм.


like punctures (puncture diameter subequal to distance between punctures). Mentum with deep triangle emargination in the middle of anterior margin, with fine and moderately dense punctation (puncture diameter subequal to distance between punctures) and transverse line of 10 long yellowish setae.


image

Figs 17–18. Ascelosodis spp., details of female internal tract.

17 – A. concinna; 18 – A. abdurakhmanovi sp. n. b – bursa copulatrix; g – accessory gland; o – oviduct; s – spermatheca. Рис. 17–18. Ascelosodis spp., половые протоки самок.

17 – A. concinna; 18 – A. abdurakhmanovi sp. n. b – копулятивная сумка; g – железа сперматеки; o – яйцевод; s – сперматека.


Pronotum transverse (1.8 times as wide as long), widest at middle, 1.5 times as wide as head. Ratio of pronotal width at anterior margin, at middle and at base 6 : 7.5 : 7. Anterior margin of pronotum widely emarginate, base bisinuate, widely rounded at middle. Lateral margins of pronotum moderately rounded, not sinuated near base. Anterior angles of pronotum acute, projected, posterior angles obtuse. All margins of pronotum beaded, bead of anterior margin smooth in middle. Disc of pronotum moderately convex, without depression in basal part. Punctation of disc fine

and moderately sparse in middle (puncture diameter subequal to distance between punctures), rest of surface of disc with fine and sparse elongate punctures (puncture diameter 1.5–2 times as wide as distance between punctures). Outer margin of prothoracic hypomera without punctation, rest of surface punctate with coarse, moderately dense weakly rasp-like punctures. Prosternal process laminar, protruded, laterally acute, beaded, with longitudinal depression. Prosternum with rows of narrow regularly depressed cicatricose foveae.


image

Fig. 19. Distribution of Ascelosodis spp., A. concinna – black circles; A. abdurakhmanovi sp. n. – white circle.

Fig. 19. Распространение Ascelosodis spp., A. concinna – черные точки; A. abdurakhmanovi sp. n. – белая точка.


Elytra glabrous, moderately elongate (1.4 times as long as wide), slightly convex, 3.3 times longer and 1.2 times wider than pronotum, 1.8 times wider than head. Elytra without striae, with very fine, sparse punctation (puncture diameter 2–3 times as wide as distance between punctures), apical half of elytra with almost invisible punctation. Epipleura smooth. Mesoventrite with rasp-shaped foveae. Metaventrite with fine, moderately dense punctation (puncture diameter subequal to distance between punctures).

Abdominal ventrites with fine and sparse punctation (puncture diameter 2–3 times as wide as distance between punctures). Abdominal ventrites 1 and 2 completely beaded laterally, ventrite 3 beaded only in anterior half, ventrites 4–5 not beaded.

Legs short. All trochanters have several long yellowish setae. Anterior tibiae depressed along dorsal surface of outer margin. All tibiae straight, slightly expanding to apex. Ratio of femur/tibia/ tarsus: 3 : 2.5 : 2 in fore legs, 4 : 3 : 2.5 in middle legs, and 5 : 4 : 3 in hind legs.

Body length 8–9 mm, width 3.7–4.5 mm.

Diagnosis. The new species is most similar to

  1. сoncinna which also has the mesoventrite with rasp-like foveae, but differs from it by the body being bare dorsally and completely covered with short setae ventrally (A. сoncinna has short setae only on the surface of the prothoracic hypomera, lateral sides of the elytra and the legs), mentum with transverse line of 10 long yellowish setae (A. сoncinna has the mentum without setae or with 1–2 setae), lateral margins of pronotum regularly rounded (A. сoncinna has the margins medially sinuate), with denser and coarser punctation of the pronotal disc, protrochanters with two long setae, meso- and metatrochanters with a single long seta (A. сoncinna has trochanters with only a single short seta), all tibiae slightly expanding to apex, not fossorial (A. сoncinna has fossorial pro- and mesotibiae, greatly expanded and extended into a tooth at apex, metatibiae slightly expanded apically), structure of ovipositor and female genital tubes as in Figs 14–16, 18.

    Distribution. Western Pamir (Fig. 19).

    Etymology. The new species is named in the memory of Professor Gayirbeg M. Abdurakhmanov, who added a great contribution to the study of Palaearctic Tenebrionidae.

    Acknowledgements

    The author expresses deep gratitude to the staff of the Laboratory of Insect Systematics of the Zoological Institute of the Russian Academy of Sciences (St Petersburg, Russia): М.G. Volkovitsh, S.V. Andreeva and B.M. Kataev for their help with the collections of ZIN and providing access to the necessary equipment. The author is also very grateful to D.A. Dubovikoff (Saint Petersburg State University, St Petersburg, Russia) for making photos of Ascelosodis,

    and to Eric G. Matthews (South Australian Museum, Adelaide, Australia) and an anonymous reviewer for the linguistic review and valuable comments.

    References

    Bates F. 1879. Characters of the new genera and species of Heteromera collected by Dr. Stoliczka during the Forsyth Expedition to Kashgar in 1873–74. Cistula Entomologica. 2: 467–484.

    Blair K.G. 1923. Coleoptera of the Second Mt. Everest Expedition, 1922. Part II. Heteromera. The Annals and Magazine of Natural History. 9(11): 278–285.

    Bouchard P., Lawrence J.F., Davies A.E., Newton A.F. 2005. Synoptic classification of the world Tenebrionidae (Insecta: Coleoptera) with a review of family-group names. Annales Zoologici. 55(4): 499–530.

    Bousquet Y., Thomas D.B., Bouchard P., Smith A.D., Aalbu R.L., Johnston A., Steiner W.E. Jr. 2018. Catalogue of Tenebrionidae (Coleoptera) of North America. ZooKeys. 728: 1–455. DOI: 10.3897/ zookeys.728.20602

    Doyen J.T. 1993. Cladistic Relationships among Pimeliine Tenebrionidae (Coleoptera). Journal of the New York Entomological Society. 101(4): 443–514.

    Fairmaire L. 1891. Descriptions de coléoptěres des Montagnes de Kashmir. Comptes-Rendus des Séances de la Société Entomologique de Belgique. LXXXVIII–CIII.

    Kaszab Z. 1959. Die Tenebrioniden Afghanistans, auf Grund der Ergebnisse der Sammelreise des Herrn J. Klapperich in den Jahren 1952/53 (Col). Entomologische Arbeiten aus dem Museum G. Frey. 10(2): 321–404.

    Kaszab Z. 1961. Neue Tenebrioniden (Coleoptera) aus der Zoologischen Staatssammlung in München. Mitteilungen der Münchener Entomologischen Gesellschaft. 51: 213–230.

    Kaszab Z. 1965. Wissenschaftliche Ergebnisse der von Dr. F. Schmid in Indien gesammelten Tenebrioniden (Coleoptera). Miscelanea Zoologica. 2(1): 107–130.

    Kaszab Z. 1968. Beitrâge zur Kenntnis der Fauna Afghanistans (Sammelergebnisse von O. Jakeš 1963–64, D. Povolný & Fr. Tenora 1966, J. Šimek 1965–66, D. Povolný, J. Geiser, Z. Šebek & Fr. Tenora 1967) Tenebrionidae, Col. Časopis Moravského Musea. Vědy přírodní. 53: 7–124.

    Kaszab Z., Schawaller W., Skopin N.G. 1978. Systematik und Ökologie einiger Tenebrionidae aus Kashmir und Ladakh. Senckenbergiana Biologica. 59: 215–234.

    Koch C. 1948. Beitrag zur Kenntnis der asiatischen Tentyriini (Col. Tenebr.).

    Entomologische Blätter. 41–44: 76–81.

    Löbl I., Merkl O., Ando K., Bouchard P., Egorov L.V., Iwan D., Lillig M., Masumoto K., Nabozhenko M., Novák V., Petterson R., Schawaller W., Soldati F. 2008. Family Tenebrionidae Latreille, 1802. In: Catalogue of Palaearctic Coleoptera. Volume 5. Tenebrionoidea. (I. Löbl,

    1. Smetana eds). Stenstrup: Apollo Books: 105–352.

Redtenbacher L. 1868. Reise der Öesterreichischen Fregatte Novara um die Erde in den Jahren 1857, 1858, 1859 unter den Befehlen des Commodore B. von Wüllerstorf-Urbair. Wien: Karl Gerold’s Sohn, iv + 249 p., 5 pls.

Reitter E. 1896. Dichotomische Uebersicht der mir bekannten Gattungen aus der Tenebrioniden-Abtheilung: Tentyrini. Deutsche Entomologische Zeitschrift. 297–303.

Reitter E. 1915. Über die Arten der Coleopterengattung Gnathosia Firch. (Capnisa Lac.) mit ganz gerandeter Basis der Flügeldecken. Coleopterologische Rundschau. 4: 60–62.

Ren G.-D., Shi A.-M. 2006. A taxonomic review of the Chinese species of the genus Ascelosodes Redtenbacher (Coleoptera: Tenebrionidae), with descriptions of three new species. Zootaxa. 1228: 1–24.

Ren G.-D., Shi A.-M. 2007. Taxonomic study on the genus Ascelosodis Redtenbacher (Coleoptera: Tenebrionidae). Acta Zootaxonomica Sinica. 32(3): 539–546.


Received / Поступила: 15.10.2018 Accepted / Принята: 31.10.2018