Dendrocellus nigripennis Liang and Kavanaugh, 2007

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 nigripennis Liang and Kavanaugh , new species

( Figs. 17 , 46 , 63 , 85–86 )

Types. Holotype: a male ( ISNB), ‘‘ Kina Balu , Borneo’ ’/‘‘ Collection P. Dupuis’ ’/‘‘ Coll. R. I. Sc. N. B.’’/‘‘ HOLOTYPE, Dendrocellus nigripennis Liang & Kavanaugh n. sp., designated by H. B. Liang & D. H. Kavanaugh 2006’’ [red label]. Paratypes (total 2 specimens): 1 male and 1 female ( ISNB), ‘‘ Bornéo’ ’/ ‘‘ Collection P. Dupuis’ ’/‘‘ Coll. R. I. Sc. N. B.’’/‘‘ PARATYPE, Dendrocellus nigripennis Liang & Kavanaugh n. sp., designated by H. B. Liang & D. H. Kavanaugh 2006’’ [yellow label].

Type locality. Mount Kinabalu, Pulau Kalimantan .

Diagnosis. Elytra black with very slight blue luster, intervals sparsely punctate ( Fig. 46 ); femora with apical half black, basal half brown; tibiae and tarsi black; protarsomere 3 symmetrical in male; tarsal claws with 4–5 pectinations, length of the longest pectination nearly half width of claw base ( Fig. 63 ); aedeagus with lamella wide, apex truncate ( Figs. 85–86 ).

Description. Length 9.2–11.0 mm, width 2.8–3.4 mm. Black, head and pronotum with blue luster; elytra with very slight blue luster, restricted to outer intervals in many specimens; tibiae, tarsi, apical half of femora, and apical fourfifths of Ant 1 black, Ant 2, Ant 3, and basal fifth of Ant 1 dark brown; Ant 4–11 and palpi brown. Head wider than pronotum, HW/PW 5 1.22 (1.21–1.23); vertex convex, coarsely punctate; labrum with medial lobe slightly protruded anteriorly; Ant 1/Ant 3 5 3.48 (3.40–3.56); genae slightly tumid; eyes large, about 2.4 times as long as genae. Pronotum coarsely punctate, PL/PW 5 1.65 (1.63–1.70); lateral margins strongly sinuate before basal angles; basal angles protruded laterally; basal foveae deep. Elytra short, EL/EW 5 1.66 (1.62–1.68), EW/PW 5 2.41 (2.33–2.58); lateral margins slightly emarginate in the basal fourth, widened posteriad to apical third, then narrowed to apex; outer angles slightly dentate, pointed; intervals convex, sparsely punctate, punctures small, mixed with some larger ones, interspace between two adjacent punctures 1.5–2.0 times diameter of punctures ( Fig. 46 ). Protarsomere 3 symmetrical in male and female; tarsal claws with 4–5 pectinations, length of the longest pectination subequal to the width of claw base ( Fig. 63 ). Aedeagus with apical lamella wide, apex truncate ( Figs. 85– 86 ).

Distribution. Known only from the type locality.

Etymology. The new species is named for its black elytra.

Remarks. Initially, we assumed this to be just a black variety of D. crassus (Andrewes) . However, the color of the femora and shape of the apex of the aedeagus ( Fig. 85 ) are both very different from those of D. crassus members, so we treat this as a distinct species.

Figures

Figs. 13–24. Habitus of Dendrocellus species. 13) D. kulti (male, Yunnan); 14) D. kulti (holotype of D. kulti reconditus); 15) D. micropectinatus (holotype); 16) D. nepalensis (male, Pedong, India); 17) D. nigripennis (holotype); 18) D. queenslandicus (holotype); 19) D. schultzei (lectotype); 20) D. sinicus (holotype); 21) D. smaragdinus (holotype); 22) D. ternatensis (holotype); 23) D. unidentatus (male, Java); 24) D. viridipennis (male, Congo). Scale line 5 2.0 mm.

Figs. 44–46. Elytral punctation of Dendrocellus species. 44) D. geniculatus (male, Tibet);

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).