Tillicera spinosa, Murakami & Gerstmeier & Sakai, 2022

Murakami, Hiroyuki, Gerstmeier, Roland & Sakai, Kaoru, 2022, Description of two new species of the genus Tillicera Spinola (Coleoptera, Cleridae, Clerinae), with new synonyms, new distributional records, and an updated key, ZooKeys 1095, pp. 123-142 : 123

Tillicera spinosa sp. nov.

Figs 25-27 , 28-30 , 46-50

Types.

Holotype. "Doi Pui, 1400-/ 1500 m, Chiang Mai, N. Thailand, 19-VI-1983, T. Shimomura leg". (RGCM, 1 male, erroneously cited in Gerstmeier and Bernhard (2010) under T. auratofasciata ). Paratypes. Laos: "NE LAOS/ Phu Pan, 1,750 m/ Ban Saleui, Xam Neua/ Houa Phan Prov./ 16-23.VI.2003/ Shinji Nagai leg." (KSCJ, 1 female). Myanmar: "near Kalaw/ 1,000-1,300 m in alt./ Shan Sta., Myanmar/ 10-25.V.2005/ Y. Kusakabe leg." (EUMJ, 1 male & 1 female; KSCJ, 1 male & 2 females); "Mt. Victoria/ (Natmataung N. P.)/ alt. 1500-2750m/ Kanpelet side", "Chin Sta., Myanmar/ 21-24. V. 2002/ Y. Kusakabe leg." (EUMJ, 1 male; KSCJ, 1 male & 1 female); "Mt. Victoria/ alt. 1500-2000 m/ Mindat side", "Chin Sta., Myanmar/ 13-14.VI.2002/ Y. Kusakabe leg.", (KSCJ, 1 female). Thailand: "Doi Pui Chieng Mai/ N - THAILAND/ 22.V.1986/ leg." (KSCJ, 1 female); QSBG-2014-0160-0010, Amnat Charoen, Chanuman Dist., Doi Inthanon NP, 18°32'44.4"S, 98°30'53"E, 1376 m, 29.V.-1.VII.2014, Malaise trap, Wichai Srisuka et al. (RGCM, 1 ex.); Same with QSBG …. -0008 (RGCM, 1 ex.); Same with QSBG …. -0009 + 0011 (QSBG, 3 exs). China: S-Yunnan (Xishuangbanna), c. 30 km NW Jinghong, vic. Bameng, 1700-2000 m; Hua Zhuliangzi Mts., 22°08.01'N, 100°31.54'E, 1700-2000 m, 30.V.2008, leg. A. Weigel, sec. forest (RGCM, 1 male).

Diagnosis.

This species is similar to Tillicera soror Schenkling, 1902, but distinguished by the following characteristics: antennomere VI-X gradually broadened; metatibiae apically extended to a broad spine; posterior margin of abdominal ventrite V, with broadly V-shaped emargination; phallobase notched at apical 1/5 of total length of tegmen (vs. T. soror : antennomere VIII-IX gradually broadened; hind tibiae not prominent at apex; posterior margin of abdominal sternite V broadly U-shaped and truncate; phallobase deeply notched at apical 1/3).

Description.

Male. Head, antennomeres IV-XI, base of pronotum and legs brownish black; antennomeres I-III and pronotum reddish. Elytra black except for reddish area near basal suture and yellowish area at basal 1/4 near lateral margin. Head at apex and legs covered with white setae; basal 1/2 of head and pronotum with mingled white and black setae; elytra densely vested with yellowish setae obliquely at suture of basal 1/3 and transversally at lateral margin basal 1/4 and apical 1/4, the remainder vested with black setae (Fig. 10 ). This species has two color patterns: the first, antennomeres IV-XI, apex of pronotum, elytra except for area covered with yellowish setae, and legs black (Fig. 11 ); the second, head black; apical 1/4 of pronotum brownish black; elytral setae white and black (Fig. 12 ).

Head including eyes as wide as pronotum; labrum incised at middle; maxillary terminal palpomeres digitiform; labial terminal palpomeres widely triangular; postgular plate narrow. Antennomere I claviform; II compact; III twice as long as II; IV-X triangular, becoming gradually widened; V-IX (Fig. 30 ) with an area vested with sensilla basiconica; X (Fig. 29 ) with two areas vested with sensilla basiconica at apical margin in ventral view; XI (Fig. 28 ) with small pit-like sensillum in male.

Pronotum slightly longer than wide, widest at middle, with fine dense punctures. Mesoventrite with short anterior process.

Elytra oblong, parallel sided, covered with ten striae; striae I and II absent before basal oblique yellow fascia; III-V or VII extending after middle, sometimes absent before basal oblique yellow fascia; VI or VIII-X rudimentary.

Profemora stouter than meso- and metafemora; punctation of meso- and metafemora denser than that of profemora. Tibiae short prominent at apex, with distinct longitudinal carina on dorsal and ventral surfaces; tibial spur formula 1-2-0; tarsal pulvillar formula 4-4-2; pro- and mesotarsomeres I and II with large lobed pulvilli; III and IV with large bilobed pulvilli; metatarsomeres I and II without pulvilli; III and IV with large bilobed pulvilli; claws with basal denticles.

Abdominal ventrite V deeply emarginated at apical margin. Pygidium (Fig. 46 ) narrowly emarginated at apical margin; ventrite VI (Fig. 47 ) almost transverse at apical margin; spicular fork long (Fig. 48 ), without intraspicular plate.

Tegmen (Fig. 49a-c ) with dorsal and ventral sinus at apical 1/5; parameroid lobes tapered posteriorly at apex in lateral view; tegminal arms short, extending from middle to basal 1/4 of total length. Median lobe shorter than tegmen; plates with rows of denticles from apical 1/5 to 2/5 of total length on dorsal and ventral sides (Fig. 50a-c ).

Female. Similar to male but distinguished by antennomere XI without pit-like sensillum, tibial spur formula 1-2-2 and apex of metatibiae not extended to a broad spine.

Measurements and ratios.

Male (N = 4). BL 6.55-8.30 (7.14) mm; PL 1.75-2.30 (1.99) mm; PW 1.55-2.10 (1.78) mm; EL 4.60-6.00 (5.15) mm; EW 2.10-2.65 (2.29) mm; EyW 0.40-0.55 (0.49) mm; EyD 0.55-0.95 (0.76) mm; PL/PW 1.10-1.14 (1.12); EL/EW 2.09-2.36 (2.25); EL/PL 2.24-2.81 (2.60); EW/PW 1.22-1.35 (1.29); EyD/EyW 1.38-1.73 (1.56). Female (N = 4). BL 8.00-8.90 (8.49) mm; PL 2.20-2.50 (2.36) mm; PW 2.00-2.25 (2.10) mm; EL 5.80-6.50 (6.13) mm; EW 2.50-2.75 (2.65) mm; EyW 0.50-0.60 (0.54) mm; EyD 0.95-1.05 (1.00) mm; PL/PW 1.07-1.20 (1.13); EL/EW 2.23-2.36 (2.31); EL/PL 2.42-2.77 (2.59); EW/PW 1.22-1.31 (1.26); EyD/EyW 1.73-2.00 (1.87).

Etymology.

This specific name is derived from the Latin Tillicera spinosa (spine), referring to metatibiae apically extended to a broad spine.

Distribution.

Laos, Myanmar, Thailand.

Figures

Figures 23 - 27. Habitus of Tillicera 23 Tillicera fortis sp. nov., Holotype, male 24 ditto, paratype, female 25 T. spinosa sp. nov., Holotype, male 26 ditto, paratype, male 27 ditto, paratype, female. Scale bars 2 mm.

Figures 28 - 31. Antennae of Tillicera spp. (28 dorsal view 29 - 31 ventral view) 28 male antennomere XI of T. spinosa sp. nov. 29 female antennomere X of T. spinosa sp. nov. 30 female antennomeres VII-IX of T. spinosa sp. nov. 31 male antennomeres IV and V of T. callosa. Abbreviations: P pit-like sensillum SB an area of sensilla basiconica.

Figures 41 - 50. Male terminal parts and aedeagus 41 - 45 Tillicera fortis sp. nov. 46 - 50 T. spinosa sp. nov. 41, 46 pygidium 42, 47 ventrite VI 43, 48 spicular fork 44, 49 tegmen in lateral (a), ventral (b) and dorsal (c) views 45, 50 median lobe in lateral (a), ventral (b), and dorsal (c) views.

Figures 1 - 12. Habitus of Tillicera species 1 Tillicera auratofasciata 2 T. aurivillosa 3 T. bibalteata 4 T. callosa 5, 6 T. cleroides 7, 8 T. hirsuta 9, 10 T. ihlei 11, 12 T. javana. Scale bars 2 mm.