Orphnebius (Deroleptus) laticeps CAMERON, 1925

Assing, Volker, 2016, On some Lomechusini of the Palaearctic and Oriental regions (Coleoptera: Staphylinidae: Aleocharinae), Beiträge Zur Entomologie = Contributions to Entomology 66 (1), pp. 13-111 : 74

Orphnebius (Deroleptus) laticeps CAMERON, 1925

( Figs 66 , 103, 112 , 359–361 )

Material examined: Indonesia: 1♀, Sumatra, Gn Merapi , 5 km E Kotobaru, 1600 m, 18.–25.V.2001, leg. Bolm ( NHMB) .

Comment: The above female is in agreement with the original description of O. laticeps , which is based on an unspecified number of syntypes from “ Sumatra; Si Rambé” ( Cameron 1925). In particular, CAMERON (1925) states that the male tergite VII has a “tubercle just in front of the middle of the posterior border”, a character shared by the examined female. In Deroleptus species , the abdominal tergites VII and VIII are generally not subject to a sexual dimorphism, so that it can be assumed that both males and females possess such a posterior tubercle on tergite VII. The external and sexual characters of the above female are illustrated in Figs 66 , 103, 112 , 359–361 .

Figures

Figs 54–83. Antenna (54–69), forebody (70–73), abdomen (74–76), abdominal segments III–V (77, 81), lateral portion of abdominal segments III–V (78, 82), tergites VI–VII (79, 83), and hind leg (80) of Orphnebius spp. of the subgenus Deroleptus: discrepans (54, 73, 75), triapicalis (55, 71, 76), gracilior (56, 72, 77–80), sexcarinatus (57, 81–83), spoliatus (58), cultellatus (59), septemcuspis (60), vates (61), tortus (62), baccillatus (63), carinatus (64), dispar (65), laticeps (66), biimpressus (67), ulcerosus (68), falagrioides (69), siamensis (70, 74). Scale bars: 70–83: 1.0 mm; 54–69: 0.5 mm.

Figs 102–118. Forebody (102–108), abdomen (109–110, 112–113, 115), lateral portion of abdominal segments III–V/ VII (111, 117–118), and tergites VII(–VIII) (114, 116) of Orphnebius spp. of the subgenus Deroleptus: carinatus (102, 117), laticeps (103, 112), biimpressus (104, 108, 113–114), ulcerosus (105, 115–116), dispar (106, 110–111), falagrioides (107, 118), baccillatus (109). Scale bars: 102–110, 112–113, 115, 117–118: 1.0 mm; 111, 114, 116: 0.5 mm

Figs 359–378. Orphnebius laticeps (359–361), O. biimpressus (362–364), O. ulcerosus (365–369), O. falagrioides (370–372), and Drusilla bifida (373–378): tergite VIII (359, 362, 368, 370, 374); female sternite VIII (360, 363, 371); spermatheca (361, 364, 372); median lobe of aedeagus in lateral and in ventral view (365–366, 376–377); paramere (367); male sternite VIII (369, 375); posteromedian portion or head (373); apex of ventral process of aedeagus (378). Scale bars: 359–372, 374–377: 0.2 mm; 373, 378: 0.1 mm.