Sinacroneuria longiprojecta Du & Huo, 2022

Xiang, Ya-Nan, Huo, Qing-Bo & Du, Yu-Zhou, 2022, Three new species of Sinacroneuria Yang & Yang, 1995 (Plecoptera: Perlidae) from Zhejiang Province, southeastern China, Zootaxa 5175 (4), pp. 487-493 : 490-491

Sinacroneuria longiprojecta Du & Huo , sp. nov.

Figs. 3a–3d

Adult habitus. General body color yellow brown. Head yellow brown with an oval light brown spot covering two posterior ocelli; triocellate, lateral ocelli margined by black pigmentation, anterior ocellus smaller ( Fig. 3a ). Antenna yellow brown and palpi yellow brown. Pronotum yellow brown and quadrate, with obvious rugosities ( Fig. 3a ). Legs mostly brown. Wings hyaline with veins brown.

Male. Body length 13 mm, forewing length 15.4 mm, hindwing length 14.6 mm (n = 1). Tergum 9 with a transverse patch of sensilla basiconica posteriorly; sensilla basiconica patch of tergum 10 divided medially, distance between patches ca. 0.5X diameter of the patch ( Fig. 3b ); paraprocts sclerotized, curved upward in a small triangular structure with sharp points ( Fig. 3b ). Sternum 9 with an oval hammer at the middle of the posterior margin ( Fig. 3c ).

Aedeagus mostly membranous, aedeagal sclerites sclerotized, stem near 1/3 the length of Y-arms. Y-arms longer and extended to the outside in a long "S" shape, the apex curved inward and upward to be horn-like; lateral sclerites sclerotized basally, the width was ca. 2X twice of Y-arms, and apex pointed; medial sclerite absent ( Fig. 3d ).

Female. Unknown.

Type material. Holotype: male, China: Zhejiang Province, Hangzhou City, Tianmu Mountain , 1998-VI -22, leg. Du Jian.

Etymology. The name refers to the longer Y-arms of aedeagus.

Distribution. China, Zhejiang Province.

Diagnosis. This new species is similar to S. dabieshana Li & Murányi, 2014 . The apex of the Y-arms of S. longiprojecta sp. nov. is horn-like and curved inward and upward ( Fig. 3d ), but the Y-arms of S. dabieshana ( Fig. 2d in Li et al. 2014) is divided from the base and extending outward does not form an S-shape and the lateral sclerites ( Fig. 1f in Li et al. 2014) are not intersected with Y-arms in S. dabieshana .

Figures

FIGURE 1. Sinacroneuria parallela sp. nov., male. a. head and pronotum, dorsal view; b. abdominal terminalia, dorsal view; c. abdominal terminalia, ventral view; d. aedeagus sclerites, dorsal view; e. median aedeagal sclerite, lateral view.

FIGURE 2. Sinacroneuria complana sp. nov., male. a. head and pronotum, dorsal view; b. abdominal terminalia, dorsal view; c. abdominal terminalia, ventral view; d. abdominal terga 9–10, details; e. aedeagal sclerites, dorsal view.

FIGURE 3. Sinacroneuria longiprojecta sp. nov., male. a. head and pronotum, dorsal view; b. abdominal terminalia, dorsal view; c. abdominal terminalia, ventral view; d. aedeagus sclerites, dorsal view.