Soronia magnipunctura Chen & Huang 2021, sp. nov.
Creators: name: Chen, Xiaoxiao
name: Huang, Min
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Nitidulidae
Soronia
Soronia magnipunctura

description: Soronia magnipunctura Chen & Huang, sp. nov.
(Figs. 5–6, 19–20, 25, 29)
Specimens examined. Holotype, ³, China: Zhejiang Province, Linan City, Qingliangfeng National Nature Reserve, 13-05-2017. Paratypes, 2³, same collection data as holotype; China: Inner Mongolia Region, Genhe City, Jinhe Town, center station of Hanma National Nature Reserve, 1³, 15-08-2017, 1 ³ 20-08-2017, Xiaoxiao Chen, NWAFU.
Description (male). Length 3.3 mm, width 1.7 mm. Body oblong, more or less convex. Dorsal and ventral surface light brownish yellow, antennal club dark, disc of pronotum and base of elytra with black stripes. Dorsal surface with decumbent yellowish pubescence, sparse and scattered thick semi-erect setae, ventral surface with decumbent yellowish pubescence (Figs. 5–6).
Head surface with punctures equal to eye facet, one diameter apart, interspaces microreticulate. Pronotal surface with punctures larger than those on head, 1.2–2.3 diameters apart, interspaces smooth to microreticulate. Elytral surface densely distributed with moderately coarse and large, oblong punctures, 0.8–2.5 diameters apart, interspaces smooth to microreticulate. Prosternum with unevenly distributed large punctures, 0.5–1.5 diameters apart, interspaces smooth. Mesoventrite with large, deep punctures distributed mainly in posterior parts, 0.5–2.2 diameters apart, interspaces microreticulate. Metaventrite with fine punctures medially, and punctures gradually larger laterally, interspaces smooth. Ventrites evenly scattered with fine punctures, 1.8–3 diameters apart, interspaces microreticulate.
Head disc and orbital part distinctly depressed. Labrum deeply notched medially. Mandibles prominent and projected from under labrum. Eyes strongly projected, with short setae. Antenna shorter than head width (including eyes); scape strongly swollen, triangular, and broadest anteriorly; antennomere 3 longer than pedicel and shorter than antennomeres 4–5 combined; antennomere 6 longer than 7; antennomere 7 subequal to 8; antennal club compact, with length 0.3× total antennal length, terminal antennomere symmetrical, distinctly shorter than previous two antennomeres combined (Fig. 25). Pronotum widest at basal 4/5; lateral margins widely explanate, anterior margin deeply emarginate, posterior margin slightly sinuate; anterior angles subvertical, posterior angles widely obtuse. Scutellar shield small, wide, triangular with apex rounded. Elytra less explanate laterally and gradually curved from middle to apex, apical angle subacute. Pygidium truncate apically and covered completely by elytra.
Last segment of maxillary palpomere slender, cylindrical and truncated apically. Last segment of labial palpomere cylindrical with apex truncate. Mentum pentagonal, with width 2.6× length. Antennal grooves deep, distinctly convergent posteriorly. Prosternum slightly raised medially, prosternal process widest behind procoxae and bent to mesoventral surface, distinctly truncate apically. Mesoventrite moderately carinate medially. Metaventrite moderately depressed medially. Distance between metacoxae nearly 2× width of mesocoxae and 2.3× width of procoxae. First abdominal ventrite along midline 2× longer than hypopygidium and 0.8× longer than ventrites 2–4 combined and pointed apically. Epipleuron wide, at base about twice as wide as antennal club.
Tibiae simple, outer apical angles slightly rounded (Fig. 29). All tarsi simple, weakly expanded, claws simple.
Male genitalia moderately sclerotized. Tegmen oblong with length 1.5× width, widest medially and gradually narrowing towards both apices, rounded apically with a shallow depression medially (Fig. 19). Median lobe oblong, equal to length of tegmen, broadly rounded and with pubescence apically (Fig. 20).
Diagnosis. This species can be easily distinguished from other species by: dorsal surface distinctly, coarsely punctate; protibia of male simple; median lobe with pubescence apically. It is similar to Soronia punctatissima (Illiger, 1794), but differs by: dorsal surface without light brown markings; male protibia not abruptly expanded medially; apex of antennal club broadly rounded; last maxillary palpomere with truncate apex.
Biology and distribution. Specimens were collected from eastern (Zhejiang Province) and northern (Inner Mongolia Region) China. From Zhejiang, specimens were collected from flowers of Actinidiaceae during May; from Inner Mongolia, specimens were trapped using half-rotten muskmelons during August.
Etymology. The specific epithet is derived from the Latin adjectives “ magna ” (= large) and “ punctatus ”, referring to the body surface having large punctures.
description: Published as part of Chen, Xiaoxiao & Huang, Min, 2021, New species in the sap beetle genus Soronia Erichson (Coleoptera: Nitidulidae Nitidulinae) from China, pp. 417-425 in Zootaxa 4908 (3) on pages 419-420, DOI: 10.11646/zootaxa.4908.3.6, http://zenodo.org/record/4442150