Afidentula dentata, Wang, Xingmin, Tomaszewska, Wioletta & Ren, Shunxiang, 2015

Wang, Xingmin, Tomaszewska, Wioletta & Ren, Shunxiang, 2015, A contribution to Asian Afidentula Kapur (Coleoptera, Coccinellidae, Epilachnini), ZooKeys 516, pp. 35-48 : 41-43

Taxon classification Animalia Coleoptera Coccinellidae

Afidentula dentata sp. n. Figures 3, 5

Diagnosis.

This species is most similar to Afidentula siamensis in general appearance and colouration, e.g. having two mutual maculae on elytra along suture (anteriorly and medi ally) but can be distinguished from the latter by having pronotum with a large black spot which almost covers entire surface of the pronotum leaving only lateral and anterior margins brown (Fig. 3 a–d), and apex of penis with two tooth-shaped appendices inwardly (Fig. 3 f–g). In Afidentula siamensis , pronotum has two large black spots, and apex of penis has a small and sharp process directed outwardly (Fig. 2 a–c, l).

Description.

TL: 4.20-4.80 mm, TW: 3.40-3.90 mm, TH: 1.90-2.40 mm, TL/TW: 1.23-1.24; PL/PW: 0.42-0.43; EL/EW: 0.97-1.03; HW/TW: 0.31; PW/TW: 0.62.

Body short oval, dorsum strongly convex, densely pubescent (Figs 3 a–d). Head yellowish brown. Pronotum mostly black with only lateral and anterior margins yellowish brown (Fig. 3c). Scutellum yellowish brown. Elytra yellowish brown, with 14 rounded black spots arranged as in Figures 3d; spots may connect to each other forming transverse bands (Fig. 3a, b). Underside yellowish brown, except meso-, metaventrite and middle area of abdomen dark brown. Epipleura yellowish brown, except areas close to meso- and metaventrite dark brown. Legs yellow.

Head with frontal punctures fine and densely distributed, 1.0-1.5 diameters apart, associated with scattered long setae; interocular distance 0.67 times head width (Fig. 3c). Pronotal disk with fine and densely distributed punctures, slightly smaller than those on head, 1.0-2.0 diameters apart. Elytral disk dually punctate, large punctures 1.0 -6.0 diameters apart and small ones 2.0-4.0 diameters apart. Surfaces of prosternum and mesoventrite shagreened, with scattered short setae. Metaventrite broad with fine and densely distributed punctures, 1.0-2.0 diameters apart.

Male genitalia. Penis stout, strongly curved, apex with two tooth-shaped appendixes directed inwardly, capsule inconspicuous (Fig. 3 f–g). Tegmen stout (Fig. 3 h–i); penis guide in lateral view short and stout, widest at base, lateral margins almost parallel along basal 4/5, and then suddenly narrowed to apex, apex slightly curved outwardly (Fig. 3h). Parameres slender and almost straight, distinctly shorter than penis guide (Fig. 3h). Penis guide in ventral view flattened and symmetrical, widest at apical 1/10, gradually weakly narrowing to base but strongly narrowing to apex, apex finger-shaped protruded (Fig. 3i).

Female terminalia and genitalia. Proctiger (TX) rounded apically. Coxites oval, without styli, apical margin with small protuberance and several setae (Fig. 3j). Spermatheca not studied.

Types.

Holotype: male, CHINA, Yunnan Prov.: Menglun, Xishuangbanna National Natural Reserve, Mengla County, 21.viii.2005, Wang XM leg; Paratypes (110): CHINA, Yunnan Prov.: 3 males, same data as holotype; 1 male, Longmen Village, Shangyong Town, Mengla County, 1.v.2008, Wang XM leg; 2 males, Menglun, Xishuangbanna National Natural Reserve, Mengla County, 29.iv.2008, Wang XM leg; 1 female, Yaoqu Villge, Mengla County, 700m, 7-8.v.2009, Ren SX leg; 30 females and males, Jiluoshan, Xishuangbanna National Natural Reserve, Mengla County, 28.iv.2008, Wang XM et al. leg; 11 females and males, Menga Town, Mengla County, 1170m, 12.v.2009, Ren SX et al. leg; 5 females and males, Jiluoshan, Xishuangbanna National Natural Reserve, Mengla County, 6.v.2009, Wang XM et al. leg; 6 females and males, Caiyanghe Natural Reserve, Puer County, 4.v.2009, Wang XM et al. leg.; 7 females and males, Longtan, Ximeng County, 900m, 9-10.v.2008, Wang XM et al. Leg.; 11 females and males, Banhong, Nangunhe National Natural Reserve, 1790m, 14-15.v.2008, Wang XM et al. leg.; 33 females and males, Banlao, Nangunhe National Natural Reserve, 1100m, 16.v.2008, Wang XM et al. leg.

Distribution.

China (Yunnan).

Etymology.

The specific epithet is formed from the Latin adjective dentatus, referring to the apex of penis with two tooth-shaped processes.