Sticholotis dilatata 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 : 22

publication ID	https://doi.org/ 10.11646/zootaxa.4326.1.1
publication LSID	lsid:zoobank.org:pub:A2A72998-86A8-4E77-A2E3-64615Edb2D5F
DOI	https://doi.org/10.5281/zenodo.5309721
persistent identifier	https://treatment.plazi.org/id/03A987ED-FFB9-FFFA-BDB6-EEC55A74FA95
treatment provided by	Plazi
scientific name	Sticholotis dilatata Wang & Ren
status	sp. nov.

Treatment

Sticholotis dilatata Wang & Ren sp. nov.

( Figures 50–52 View FIGURES 47 – 55. 47 – 49 , 183–186 View FIGURES 178 – 186. 178 – 182 , 298 View FIGURE 298 )

Diagnosis. This species is similar to S. cinctipennis in general appearance, but can be distinguished from latter by yellowish brown pronotum, very wide lateral elytral margin and elytra with a row of large punctures around the central black spot ( Fig. 50 View FIGURES 47 – 55. 47 – 49 ). In S. cinctipennis , pronotum is dark brown, lateral elytral margin moderately large and elytra have 2–3 rows of large punctures extending from base to apex ( Fig. 53 View FIGURES 47 – 55. 47 – 49 ). The male genitalia of S. dilatata are very distinctive because of parameres which are distinctly dilated, lamellae-shaped in apical 1/3 length ( Figs 185– 186 View FIGURES 178 – 186. 178 – 182 ).

Description. TL: 2.34 mm, TW: 2.14 mm, TH: 1.35 mm, TL/TW: 1.09; PL/PW: 0.40; EL/EW: 0.86; HW/TW: 0.37; PW/TW: 0.65.

Head reddish brown. Pronotum and scutellum reddish brown. Elytra predominantly red, with wide black band along basal and lateral margins, band on lateral margins expanded at middle and apex of elytra. Elytra additionally with two black rounded spots at middle and apex of suture, the middle one distinctly larger than apical one ( Figs 50–52 View FIGURES 47 – 55. 47 – 49 ). Underside reddish brown, middle of metaventrite dark brown, Elytral epipleuron and legs yellowish brown.

Body almost circular in outline, hemispherical, shiny and glabrous. Head frontal punctures medium, 1.0–2.0 diameters apart, with scattered short setae, interocular distance of eyes 0.58x head width ( Fig. 52 View FIGURES 47 – 55. 47 – 49 ).

Pronotal punctures fine, 1.0–1.5 diameters apart. Elytral punctures fine and sparsely distributed, similar to those on pronotum, 1.0–3.0 diameters apart, with several large punctures around the central black spot. Elytral margins very wide, visible from above.

Prosternal punctures fine, 1.0–1.5 diameters apart, with scattered long setae. Mesoventral surface shiny, punctures similar to those on prosternum, with scattered short setae. Metaventrite shiny and broad, covered by coarse and dense punctures.. Elytral epipleuron broad, complete to apex, feebly foveate to accommodate femoral tips of hind legs. Wings well-developed.

Male genitalia: Penis long and slender, strongly curved at 2/5 its length, capsule broadening basally and with a small inner process, apex rounded ( Fig. 184 View FIGURES 178 – 186. 178 – 182 ); tegmen with penis guide in lateral view stout, straight at 2/3 its length, then strongly curved and narrowing to apex, distinctly shorter than paramere ( Fig. 185 View FIGURES 178 – 186. 178 – 182 ); Apical 1/3 of parameres distinctly dilated, lamellae-shaped; penis guide in ventral view subparallel along its 4/5 length, slightly wider at middle, apical 1/5 strongly narrowed, finger-shaped ( Fig. 186 View FIGURES 178 – 186. 178 – 182 ).

Holotype: 1male, China, Yunnan: Longtan, Ximeng , [22°39.69′N, 99°35.59′E], ca 1200m, 9.v.2009 Wang XM leg ( SCAU). GoogleMaps

Distribution. China: Yunnan.

Etymology. The specific epithet is formed from the Latin adjective dilatatus, referring to the dilated parameres.