Apatetica xuyuhaoi Chang, Schillhammer & Tang 2025, sp. nov.
Creators: name: Chang, Jin-Kang
name: Schillhammer, Harald
name: Tang, Liang
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Apatetica
Apatetica xuyuhaoi

description: Apatetica xuyuhaoi Chang, Schillhammer & Tang, sp. nov.
ŕĸěiẽāà
(Figs. 1–7)
Type material. Holotype. China: Guangxi: ♂, glued on a card with labels as follows: “China: Guangxi, Huanjiang, Jiuwan Mt., Yangmeiao, 25°12′22.15′′N, 108°40′32.01′′E, alt. 1250 m, 23.IV.2021, Tang, Peng, Cai & Song leg, SNCA1509.” “Holotype / Apatetica xuyuhaoi / Chang, Schillhammer & Tang” [red label] (SHNU).
Paratypes. 3♂♂ 1♀, SNCA1510–SNCA1513, China: Guangxi, Jinxiu County, Laoshan Forest Farm, 24°07′02′′N, 110°11′51′′E, beech forest, mixed leaf litter, humus, sifted, alt. 950 m, 26.VII.2014, Peng, Song, Yu & Yan leg. (SHNU, NMW); 2♂♂, SNCA1514, SNCA1515, China: Guangxi, Liuzhou City, Jiuwan Shan N. R., Yangmeiao, 25°11′42′′N, 108°38′51′′E, mixed leaf litter, humus, sifted, alt. 1200 m, 24–26.VII.2015, Li & Zhao leg. (SHNU).
Description. Body (Fig. 1–2) blackish, with the lateral margins of the pronotum broadly dark reddish-brown; elytra with dark metallic greenish hue; antennae and legs black except for the reddish-brown antennomeres 1–5 and tarsomere 5.
BL: 8.9–9.2 mm, FL: 7.2–7.7 mm.
HW: 1.76–1.79 mm, PW: 3.55–3.70 mm, EW: 3.53–3.75 mm, AL: 4.21–4.31 mm, PL: 2.01–2.21 mm, EL: 4.07–4.17 mm.
Head strongly transverse; vertex with flat extensive elevation, both sides of elevation glossy, with micropunctation, and in postero-median portion with a cluster of numerous macropunctures; frons glossy and with micropunctation, laterally with macropunctures; lateral portion behind eye and area near medial margin of eye with very dense and coarse punctation.Antennae very long and slender; antennomeres 4 and 5 three times as long as broad; antennomere 10 approximately 1.6 times as long as broad.
Pronotum approximately 1.7–1.8 times as broad as long and 2.0–2.1 times as broad as head, broadest at posterior third; lateral margins broadly explanate, with shallow longitudinal microsculpture, each with several marginal punctures; disc weakly elevated; punctation of disc coarse, dense laterally and sparser in middle; medio-lateral portions of disc with irregular impunctate patches.
Elytra approximately 1.9–2.0 times as long as pronotum; each elytron with nine finely punctate striae; intervals flat with micropunctation; lateral apical angles of elytra obtuse. Scutellum transverse. Legs very long and slender.
Abdomen with microsculpture on tergites VI–VIII; tergite VIII with pronounced sexual dimorphism.
Male. Tergite VIII wedge-shaped, apically obtusely pointed; aedeagus (Fig. 4–7) 2.7 mm long; median lobe long, slender, tapering apicad, and very acute apically in ventral view, apical two-fifths distinctly bent dorsad in lateral view; parameres slender, apically obtuse and flattened in ventral view and bent ventrad.
Female. Tergite VIII (Fig. 3) apically broadly flattened and truncated.
Distribution. China (Guangxi).
Diagnosis. The new species can be distinguished from all known congeners with metallic elytra by the combination of the following characters: antennae black except for the reddish-brown antennomeres 1–5, elytra with dark metallic greenish hue and obtuse lateral apical angles, the shape of pronotum and the distribution of pronotal punctation, and female tergite VIII apically broadly flattened and truncated. The comparison between the new species and all known congeners with metallic elytra and obtuse lateral apical elytral angles is shown in Table 1.
Etymology. The specific name is dedicated to Mr. Yu-Hao Xu, a promising herpetologist who provides continuous supports to our work.
description: Published as part of Chang, Jin-Kang, Schillhammer, Harald & Tang, Liang, 2025, Two new species of Apateticinae from Guangxi, China (Coleoptera: Staphylinidae), pp. 314-324 in Zootaxa 5575 (2) on pages 315-316, DOI: 10.11646/zootaxa.5575.2.7, http://zenodo.org/record/14746988