Sticholotis acutifolia Wang & Ren, sp. nov.
Creators: name: Xingmin Wang
name: Hermes E. Escalona
name: Shunxiang Ren
name: Chen Xiaosheng
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Coccinellidae
Sticholotis
Sticholotis acutifolia

description: Sticholotis acutifolia Wang & Ren sp. nov.
(Figures 65–67, 206–210, 299)
Diagnosis. This species is close to S. magnopunctata in morphological characters and genitalia, but can be distinguished from the latter by the spot on center of elytral disc rounded and touching the black external band, and elytra with two rows of large punctures along elytral suture (Fig. 65). In S. magnopunctata, the spot on on center of elytral disc is elongate oval but not touching the black external band and the elytra lack large punctures (Fig. 62). The penis guide is also diagnostic and in S. acutifolia is distinctly narrower than in S. magnopunctata (Figs 204, 209).
Description. TL: 2.14 mm, TW: 1.88 mm, TH: 1.15 mm, TL/TW: 1.14; PL/PW: 0.41; EL/EW: 0.88; HW/TW: 0.40; PW/TW: 0.68.
Head brown. Pronotum and scutellum black. Elytra orange, with moderately wide brown band along lateral margin and suture; band expanded at middle of lateral margin and elytral apex. Elytra with 3 large black spots disposed as follows: the largest resting on middle of elytral suture; a pair resting on disc slightly posteriad of half length of elytron (Figs 65–67). Underside brown, elytral epipleuron and legs yellowish brown.
Body almost circular in outline, hemispherical, shiny and glabrous. Head frontal punctures large, dense and shallow, 0.2–0.8 diameters apart, with short dense setae. Eyes small and coarsely faceted, interocular distance about 0.57x head width (Fig. 67).
Pronotal punctures fine and conspicuous, 1.0–2.0 diameters apart. Elytral punctures slightly larger than those on pronotum, 1.5–2.0 diameters apart, with two rows of large punctures along sutural spot margin. Elytral margins very narrowly explanate, hardly visible from above.
Prosternal surface shagreened, punctures inconspicuous, with long sparse setae. Mesoventral surface shagreened, punctures large. Metaventrite covered by coarse and dense punctures distributed at center. Elytral epipleuron broad and complete to apex, feebly foveate to accommodate femoral tips of hind legs. Wings welldeveloped.
Male genitalia: Penis short, capsule with small inner process and without outer one (Fig. 207); tegmen with penis guide slightly longer than parameres, in lateral view thin and straight, widest at base, tapering to apex, apex sharply pointed (Fig. 208); penis guide in ventral view subtriangular, widest at base, tapering to apex, apex pointed (Fig. 209); parameres very slender, with short setae apically.
Female genitalia: Ovipositor elongate and triangular, styli highly reduced, each with several long terminal setae (Fig. 210).
Holotype: 1male, China, Guangxi: Pinglongshan, Shiwandashan National Natural Reserve, [21°49.88′N, 107°56.79′E], ca 160m, 29.vii.2005, Wang XM leg (SCAU). Paratype: 1female, same data as holotype.
Distribution. China: Guangxi.
Etymology. The specific epithet is formed from the Latin adjective acutifolius, referring to pointed apex of penis.
description: Published as part of Xingmin Wang, Hermes E. Escalona, Shunxiang Ren & Chen Xiaosheng, 2017, Taxonomic review of the ladybird genus Sticholotis from China (Coleoptera: Coccinellidae), pp. 1-72 in Zootaxa 4326 (1) on pages 27-28, DOI: 10.11646/zootaxa.4326.1.1, http://zenodo.org/record/999033