Amphinemura daloushana Yan, Yang & Li 2022, sp. nov.
Creators: name: Yan, Yanhua
name: Li, Mengyu
name: Yang, Ding
name: Li, Weihai
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Nemouridae
Amphinemura
Amphinemura daloushana

description: Amphinemura daloushana Yan, Yang & Li, sp. nov.
(Figs. 1–2, 4a–4c)
Male habitus. Body color generally brown. Head dark brown to black; antennae brown but basal segments pale; compound eyes black, mouthparts brownish; head wider than pronotum; pronotum brown, rectangular with distinct markings; legs light brown, tarsi dark brown except basal segment pale, base of tibia of hindlegs dark brown. Wing membranes subhyaline, veins dark brown. Abdomen brown with darker terminal segments.
Male (Figs. 1–2). Forewing length 5.5–5.7 mm, hindwing length 4.4–4.7 mm (n = 3). Tergum 9 distinctly sclerotized, anterior margins lightly concave, posteromedial incision broadly triangular with an interrupted row of several spinules and long hairs (Figs. 1a, 2a). Slender vesicle of sternum 9 claviform, length>5X maximum width, constriction is slight and gradually tapering toward tip (Figs. 1b, 4b). Hypoproct basally subquadrate, apex gradually tapering, nipple-like (Fig. 1b). Tergum 10 darkly sclerotized, with a few tiny spines and short hairs present on either side of a typical membranous concavity below the epiproct (Figs. 1a, 2a). Cercus short, slightly curved inward. Epiproct (Figs. 1a–1b, 2a) subrectangular, distal half narrower but expanded laterally after KOH treatment (Figs.1c, 2a, 4a). Dorsal sclerite mostly membranous with slightly scaled surface (Figs. 1c–1d, 2c–2d), with two stripe-like, sclerotized lateral arms ending barely before apex. Ventral sclerite strongly sclerotized, broad at basal third, then tapering toward tip which is inserted into the apical folds of dorsal sclerite and apically extending over the dorsal sclerite to form a short, bifurcate apical tube (Figs. 1c, 2a–2b, 4a), expanded into a large ventral ridge with rows of short black spines near apex, lateral surface of the ridge distinctly rugose (Figs. 2e–2f, 4c). Paraproct inner lobe moderately sclerotized and triangular (Figs. 1b, 1e, 2g –2h); median lobe distinctly sclerotized, outer margins C-shaped, medially curved inward, out-curved and upcurved subapically, apex wider, with two hooked spines; outer lobe slender and heavily sclerotized, apically upcurved and fused with median lobe, without projecting spine (Figs. 1b, 1e, 2g –2h); the apex of the paraproct possesses ventral membranous parts under the two hooked spines (Fig. 1e).
Female. Unknown.
Nymph. Unknown.
Type material. Holotype male (CAU), CHINA: Chongqing municipality, Jiangjin District, Simianshan Town, Dawopu, 885 m, N 28.582 3, E 106.351 9, 27-IV-2013, leg. Xingyue Liu. Paratypes: 2 males (HIST), same data as the holotype.
Distribution. China (Chongqing).
Etymology. The specific epithet refers to Daloushan Mountains, to which Mount Simianshan belongs.
Remarks. Amphinemura daloushana sp. nov. is a member of the A. luteipes (Kimmins 1947) species group (Aubert 1967) by having a similar apical tube of epiproct. Amphinemura daloushana sp. nov. seems close to A. multispina (Wu 1973) (in Li et al., 2018a) in this species group, but the yellow pronotum in that species is distinctive (fig. 7b, Li et al., 2018a).
The peculiar paraproct of A. daloushana sp. nov. distinguishes it from all other species of the A. luteipes group: apex of median lobe terminating into two curved spines and outer lobe lacking distal spines. In regard to other similar species included in the group: A. flavicollis Klapálek, 1912, A. elegans Zwick, 1980 (in Zwick & Sivec, 1980), A. luteipes Kimmins, 1947, and A. pseudoluteipes Aubert, 1967, the median lobe of paraproct has at least six to seven black spines. The median lobe of A. pulchra Zwick, 1977 and A. baumanni Murányi & Li, 2013 have few spines or are spineless, however, their outer paraproct lobe has four and six to seven spines, respectively, whereas the outer lobe of the new species is spineless.
description: Published as part of Yan, Yanhua, Li, Mengyu, Yang, Ding & Li, Weihai, 2022, Two new species of Amphinemura (Plecoptera: Nemouridae) from southwestern China, pp. 435-443 in Zootaxa 5194 (3) on page 438, DOI: 10.11646/zootaxa.5194.3.7, http://zenodo.org/record/7154622