Sticholotis tortus Wang & Ren

Xingmin Wang, Hermes E. Escalona, Shunxiang Ren & Chen Xiaosheng, 2017, Taxonomic review of the ladybird genus Sticholotis from China (Coleoptera: Coccinellidae), Zootaxa 4326 (1), pp. 1-72 : 28-29

Sticholotis tortus Wang & Ren sp. nov.

( Figures 68–70 , 211–216 , 299 )

Diagnosis. This species can be distinguished from other Sticholotis species by the penis with contorted apical part and pointed apex, rather thin and slender parameres and straight penis guide ( Fig. 68 ).

Description. TL: 2.11–2.47 mm, TW: 1.88–2.21 mm, TH: 1.15–1.32 mm, TL/TW: 1.11–1.12; PL/PW: 0.39– 0.42; EL/EW: 0.89–0.90; HW/TW: 0.34; PW/TW: 0.61.

Head yellowish brown. Dorsal color pattern as follows ( Figs 68–70 ): Elytra predominantly yellowish brown, with moderately wide reddish brown band along lateral margins; band expanded at middle of lateral margin and elytral apex. Elytra with 6 moderately black rounded spots disposed as follows: two resting near middle of elytral suture, the remaining four spots slightly larger, concentrated in the apical and basal halves of each elytral disc. Sometimes spots on elytra small, external margin bands and spots besides central suture disappear. Underside reddish brown; metaventrite black brown. Legs yellowish brown and tarsi yellow.

Body almost circular in outline, hemispherical, shiny and glabrous. Head frontal punctures inconspicuous, with short sparse setae, interocular distance of eyes 0.61x head width ( Fig. 70 ).

Pronotal punctures fine and densely distributed, 1.0–2.0 diameters apart. Elytral punctures slightly larger than those on pronotum, 1.5–2.5 diameters apart, with row of large dark punctures along sutural, lateral margins. Elytral margins moderately explanate, entirely visible from above.

Prosternal punctures inconspicuous, with scattered long setae. Mesoventral surface shiny and slightly shagreened, with sparse short setae. Metaventrite covered by coarse and sparse punctures. Elytral epipleuron moderately broad, complete to apex, feebly foveate to accommodate femoral tips of hind legs. Wings welldeveloped.

Male genitalia: Penis short and slender, slightly curved at base, capsule broadening basally and with small inner process, apex pointed, contorted and curved ( Figs 212–213 ); tegmen with penis guide slightly longer than parameres, in lateral view short and stout, subparallel to apical 2/3, strongly narrowing to apex ( Fig. 214 ); penis guide in ventral view elongate, subparallel, strongly narrowed at apical 1/5, apex rounded ( Fig. 215 ); parameres slender, almost straight, with short setae apically.

Female genitalia: Ovipositor elongate and narrowly triangular, styli inconspicuous, each with several long terminal setae ( Fig. 216 ).

Holotype: 1male, China, Yunnan: Mengxing, Mengla, [21°52.63′N, 101°27.07′E], ca 690m, 3.v.2008, Wang XM leg . Paratypes (24): Yunnan: 2males, 9females, same data as holotype (1male, 7females SCAU, 1male, 2females IOZ) ; 2males, 1female, Tongbiguan Natural Reserve, Nabang, Yingjiang, [24°37.86′N, 97°34.75′E], ca 1000m, 22.v.2008, Wang XM et al. leg (1male, 1female SCAU, 1male IOZ); 1male, 2females, Longtan, Ximeng, [22°39.69′N, 99°35.59′E], ca 1200m, 9.v.2008, Wang XM et al. leg; 5females, Tongbiguan Natural Reserve, Nabang, Yingjiang, [24°37.86′N, 97°34.75′E], ca 1000m, 21. ix.2006, Wang XM et al. leg; 1male, Daheishan, Jiangcheng, [22°32.68′N, 101°55.13′E], ca 1150m, 17.v.2009, Wang XM leg; 1male, Yaoqu, Mengla, [21°50.27′N, 101°25.37′E], ca 700m, 7.v.2009, Wang XM leg.

Distribution. China: Yunnan.

Etymology. The specific epithet is formed from the Latin adjective tortus referring to contorted penis apex.

Figures

FIGURE 299. Distribution map. S. punctata Crotch, 1874 (▲); S. magnopunctata sp. nov. (■); S. acutifolia sp. nov. (●); S. tortus sp. nov. ().

FIGURES 65 – 73. 65 – 67: S. acutifolia sp. nov. (65) dorsal habitus; (66) lateral habitus; (67) frontal habitus. 68 – 70: S. tortus sp. nov. (68) dorsal habitus; (69) lateral habitus; (70) frontal habitus. 71 – 73: S. latissima sp. nov. (71) dorsal habitus; (72) lateral habitus; (73) frontal habitus. Scale bars: 0.5 mm.

FIGURES 206 – 216. 206 – 210: S. acutifolia sp. nov. (206) abdomen; (207 – 209) male genitalia: (207) penis; (208) tegmen, lateral view; (209) tegmen, ventral view; (210) ovipositor. 211 – 216: S. tortus sp. nov. (211) abdomen; (212 – 215) male genitalia: (212) penis; (213) apex of penis; (214) tegmen, lateral view; (215) tegmen, ventral view; (216) ovipositor. Scale bars: 0.1 mm.