Dendrocellus rugicollis Chaudoir, 1861

Liang, Hongbin & Kavanaugh, David H., 2007, Review of the Genus Dendrocellus Schmidt-Göbel (Coleoptera: Carabidae: Dryptini), with Descriptions of Seven New Species, The Coleopterists Bulletin (Oxford, England) 61 (1), pp. 1-39 : 1-39

Dendrocellus rugicollis Chaudoir

( Figs. 7 , 29 , 33 , 37 , 57 , 75–76 )

Dendrocellus flavipes, Schmidt-Göbel 1846: 24 ( India)

Dendrocellus rugicollis Chaudoir 1861: 546 ( Nepal, India)

Types. Lectotype, designated here, a male ( NMPC), ‘‘ Mus. Pragense, Coll. Helfer’ ’/‘‘ Calcutta, Helfer’ ’/‘‘ flavipes Wied. Col. Helfer’ ’/‘‘ LECTOTYPE, Dendrocellus rugicollis Chaudoir , designated by H. B. Liang & D. H. Kavanaugh 2006’’ [red lab]. Paralectotype: a male ( NMPC), ‘‘ Mus. Pragense, Coll. Helfer’ ’/ ‘‘Calcutta’’/‘‘ flavipes Wied. Col. Helfer’’/‘‘ PARALECTOTYPE, Dendrocellus rugicollis Chaudoir , designated by H. B. Liang & D. H. Kavanaugh 2006’’ [yellow label].

Other specimens examined. Total 6 specimens: China: 1 male, ‘‘ Guangxi, Tianlin, Lidongshan, 1,300 –1,400 m, 2002. V.28, Jianwen Liu collector’’; 1 male, ‘‘ Guangxi, Tianlin, Langpin, 1,300 m, 2002. VI.1, Jianwen Liu collector’’; 1 female, ‘‘ Guangxi, Tianlin, Yaojiawan, 1,200 –1,400 m, 2002. VI.1, Xiujuan Yang collector’’. India: 1 female ( MNHN), ‘‘Ex Musaeo Chaudoir’’/‘‘Museum Paris’’/ ‘‘ rugicollis Chaudoir , flavipes Schmidt-Göbel, Indes. Bor. Or. C. Laferte´’’; 1 male ( MNHN), ‘‘ nepalensis Hope’’/‘‘Ex Musaeo Chaudoir’’/‘‘Museum Paris’’/‘‘ rugicollis Chaudoir , flavipes Schmidt-Göbel, Indes. Bor. Or. C. Laferte´’’; 1 male ( MNHN), ‘‘Sabatoa, Boucard’’/‘‘Ex Musaeo Chaudoir’’/‘‘ rugicollis Chaudoir , flavipes Schmidt-Göbel, Indes. Bor. Or. C. Laferte´’’.

Description. Length 9.4–10.0 mm, width 2.8–3.2 mm. Black with blue and green luster (head and pronotum with blue luster only in the paralectotype specimen); palpi, tibia, basal two-thirds of Ant 1, Ant 2–11, basal six sevenths of femora yellow; apical third of Ant 1, apical seventh of femora brown or black. Head ( Fig. 33 ) with vertex slightly convex; Ant 1/Ant 3 5 3.16 (2.93–3.31); labrum with medial lobe moderately protruded anteriorly ( Fig. 29 ); genae short, slightly tumid; eyes large, about 2.5 times as long as genae. Pronotum cylindrical, HW/PW 5 1.14 (1.11–1.19), PL/PW 5 1.40 (1.34–1.48); lateral margins widened from apical angles to middle, then narrowed posteriad, sinuate before basal angles; basal angles nearly rectangular; middle line very shallow. Elytra with lateral margins slightly widened posteriad from base to apical third, then narrowed to apex (both sexes); outer angles obtuse, not pointed ( Fig. 37 ); EL/EW 5 1.83 (1.71–1.92), EW/PW 5 2.20 (2.06–2.38); striae shallow; intervals densely punctate. Protarsomere 3 slightly asymmetrical in male; tarsal claw slender, with 5–6 long pectinations, length of individual pectination longer width of claw base ( Fig. 57 ). Aedeagus stout, with apical lamella wide, linguiform ( Figs. 75–76 )

Variation. Apical seventh of femora and apical third of Ant 1 are paler (brown) in lectotype and paralectotype than in others (black).

Distribution. China, India, Nepal.

Remarks. Schmidt-Göbel has been recognized as the author of this species, but this is incorrect. When he described his new genus, Dendrocellus (Schmidt-Göbel 1846) , he included Drypta flavipes Wiedemann in that genus and redescribed that species, based on specimens that he had misidentified. He clearly did not intend to describe a new species at that time. Chaudoir (1861: 546) recognized that Schmidt- Göbel’s description of D. flavipes Wiedemann actually represented a distinct and new species, for which he provided the name, Dendrocellus rugicollis . According to Article 72.4.2 of the International Code of Zoological Nomenclature, when a new nominal species group taxon is based on a published misidentification by an earlier author, the type series consists of or includes the specimens that had been misidentified. Consequently, the specimens studied by Schmidt-Göbel constitute the type series for D. rugicollis Chaudoir ; and we have selected one of two Schmidt- Göbel specimens in NMPC as lectotype, the other as paralectotype.

Andrewes (1921: 173 [in a footnote], and again in 1923: 8) treated the name D. flavipes Schmidt-Göbel as a synonym of Dendrocellus geniculatus (Klug) . When we examined Schmidt-Göbel’s specimens, we found that they possess quite long tarsal claw pectinations ( Fig. 57 ) and an aedeagus with linguiform lamella; and this species, therefore, is clearly distinct from D. geniculatus (Klug) .

Figures

Figs. 1–12. Habitus of Dendrocellus species. 1) D. australis (male, Congo); 2) D. coelestinus (syntype); 3) D. coelestinus (type of D. paralellus); 4) D. confusus (male, Thailand); 5) D. crassus (male, Borneo); 6) D. elegans (male, New Guinea); 7) D. rugicollis (lectotype); 8) D. geniculatus (holotype); 9) D. geniculatus (holotype of D. gilsoni); 10) D. gestroi (lectotype); 11) D. inexpectus (holotype); 12) D. javanus (holotype). Scale line 5 2.0 mm.

Figs. 25–30. Labrum of Dendrocellus species. 25) D. australis (male, Congo); 26) D. geniculatus (male, Tibet); 27) D. sinicus (holotype); 28) D. coelestinus (syntype); 29) D. rugicollis (lectotype, India); 30) D. confusus (male, Thailand). Scale line 5 0.5 mm.

Figs. 31–34. Head of Dendrocellus species. 31) D. queenslandicus (holotype); 32) D. ternatensis (male, Batchian, Indonesia); 33) D. rugicollis (lectotype, India); 34) D. javanus (holotype). Scale line 5 1.0 mm.

Figs. 35–43. Left elytron apex of Dendrocellus species. 35) D. kulti (male, Yunnan); 36) D. nepalensis (male, Pedong, India); 37) D. rugicollis (lectotype, India); 38) D. micropectinatus (holotype); 39) D. australis (male, Congo); 40) D. geniculatus (male, Tibet); 41) D. sinicus (holotype); 42) D. elegans (male, New Guinea); 43) D. unidentatus (male, Java). Scale line 5 1.0 mm.

Figs. 57–72. Tarsal claws of hind tarsi of Dendrocellus species and Drypta species. 57) D. rugicollis (lectotype); 58) D. elegans (male, New Guinea); 59) D. schultzei (lectotype); 60) D. sinicus (holotype); 61) D. inexpectus (holotype); 62) D. javanus (male, Java Occid., paratype); 63) D. nigripennis (holotype); 64) D. geniculatus (male, Tibet); 65) D. australis (male, Congo); 66) D. queenslandicus (holotype); 67) D. confusus (male, Thailand); 68) D. nepalensis (male, Pedong, India); 69) D. coelestinus (syntype); 70) D. micropectinatus (male paratype, Congo); 71) Drypta longicollis Macleay 1825 (male, Thailand); 72) Drypta lineola virgata Chaudoir 1850 (male, Vietnam). Scale line 5 0.1 mm.

Figs. 73–90. Male genitalia of Dendrocellus species. 73) and 74) D. confusus (Thailand); 75) and 76) D. rugicollis (lectotype); 77) and 78) D. coelestinus (Thailand); 79) and 80) D. nepalensis (Pedong, India); 81) and 82) D. kulti (Hubei, China); 83) and 84) D. crassus (Borneo); 85) and 86) D. nigripennis (holotype); 87) and 88) D. geniculatus (Pedong, India); 89) and 90) D. javanus (holotype). Scale lines 5 1.0 mm, scale line A for Figs. 73, 75, 77, 79, 81, 83, 85, 87, 89 (apical part, dorsal view); scale line B for Figs. 74, 76, 78, 80, 82, 84, 86, 88, 90 (left lateral view).