Desera Hope 1831:21

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

Desera Hope 1831:21 ; Dupuis 1912:319; Heller 1923:303; Csiki 1932:1553;

Basilewsky 1960:177; Jedlicka 1963:486; Hansen 1967:400; and Habu

1967:277.

Type species. Dendrocellus discolor Schmidt-Göbel 1846 (5 Desera nepalensis Hope 1831 ), designated by Andrewes 1939.

Description. Body narrow, elongate ( Figs. 1–24 ), length 8.0–14.0 mm, width 2.5–4.2 mm. Black with blue or green luster, in some species mixed with coppery or purple luster; in some species, the pronotum red or brown, sternum brown with blue luster. Microsculpture distinct, forming isodiametric meshes. Head punctate and pubescent; Ant 1 elongate, 2.5–3.8 times as long as Ant 3; mandibles about 3.0 times as long as labrum, hooked at apex; maxillary and labial apical palpomeres securiform; labrum with medial lobe slightly ( Figs. 25–27 ), moderately ( Figs. 28, 29 ), or strongly ( Fig. 30 ) protruded anteriorly; genae short and oblique ( Figs. 31, 32 ), or long and distinctly tumid ( Figs. 33, 34 ). Pronotum cylindrical, about 1.3–1.8 times as long as wide, punctate and pubescent, punctures larger than those on head and elytra. Elytra truncate at apex, outer angles more or less round ( Figs. 35, 36 ), obtuse ( Figs. 37, 38 ), slightly dentate ( Figs. 39, 40 ), or strongly dentate and sharply pointed at apex ( Figs. 41–43 ); striae shallow, punctate; intervals flat or slightly convex, punctate and pubescent; in some species, punctures nearly equal in size, quite dense, interspace between two adjacent punctures narrower than diameter of punctures ( Fig. 44 ), in other species, punctures unequal in size, sparse, interspace between two adjacent punctures often wider than diameter of punctures ( Figs. 45, 46 ). Hindwings fullsized, functional. Sterna densely punctate and pubescent; apical margin of terminal sternum slightly protruded posteriad medially in male ( Figs. 47, 48 ), almost straight or widely rounded in female ( Figs. 49, 50 ). Legs slender, protarsomere 3 strongly ( Fig. 51 ) or slightly ( Figs. 52 ) asymmetrical or symmetrical ( Figs. 53 ) in male, symmetrical in female ( Figs. 54–56 ), tarsomere 4 bilobed ( Fig. 51–56 ); tarsal claws slender, more or less pectinate on inner side ( Figs. 57–70 ), very different from those of Drypta (claws thick, strongly curved, and smooth on inner side; e.g., Figs. 71, 72 ). In Asian species, aedeagus generally thin and long ( Fig. 73, 74, 77–102 ), with apical lamella wide and long, round or truncate at apex ( Figs. 73–86 ), narrow, digitiform ( Figs. 87–96 ), or short and round at apex ( Figs. 97–102 ); in African species, aedeagus stout, with lamella long or short ( Figs. 103–108 ), apex round, thickened ( Figs. 104, 108 ) or thin ( Fig. 106 ).

Biology. These beetles live on vegetation, but adults of some species (e.g., D. nepalensis (Hope)) also hide under shrub debris or inside decayed tree trunks. Adults are attracted to light traps.

Distribution. Asia, Australia and Africa.

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

Figs. 47–50. Apical margin of terminal sternum of Dendrocellus species. 47) and 49) D. geniculatus (Tibet); 48) and 50) D. crassus (Borneo); 47 and 48 5 males; 49 and 50 5 females. Scale line 5 1.0 mm.

Figs. 51–56. Tarsomeres 1–4 of right protarsus of Dendrocellus species (dorsal view). 51) and 54) D. viridipennis (Congo); 52) and 55) D. geniculatus (Tibet); 53) and 56) D. crassus (Borneo); 51 to 53 5 males; 54 to 56 5 females. 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).

Figs. 91–108. Male genitalia of Dendrocellus species. 91) and 92) D. queenslandicus (holotype); 93) and 94) D. ternatensis (Batchian, Indonesia); 95) and 96) D. elegans (New Guinea); 97) and 98) D. unidentatus (male, Java); 99) and 100) D. inexpectus (holotype); 101) and 102) D. sinicus (holotype); 103) and 104) D. viridipennis (male, Congo); 105) and 106) D. micropectinatus (holotype); 107) and 108) D. australis (male, Congo). Scale lines 5 1.0 mm, scale line A for Figs. 91, 93, 95, 97, 99, 101, 103, 105, 107 (apical part, dorsal view); scale line B for Figs. 92, 94, 96, 98, 100, 102, 104, 106, 108 (left lateral view).