Orthotrichia latiramifera Zhou et Ya
Creators: name: Lei, Zhou
name: Lian-Fang, Yang
name: Morse, John C.
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Hydroptilidae
Orthotrichia
Orthotrichia latiramifera

description: Orthotrichia latiramifera Zhou et Ya n g, sp. nov.
Figs 12–16
Material. Holotype ɗ, Jiangxi Province, Jiu Lian Shan National Nature Reserve, Unnamed trib. of Xia-Gong- Tang Stream (114°28'08"E, 24°32'05"N), elev. 630 m, 2005-vi-07, Coll. Zhou Xin, Sun Chang-Hai.
Etymology. The compounded Latin words “ latus- ” (side), “ ramus ” (branch), and feminine suffix “-fera" (bearing) mean "side-branch-bearing", in reference to the spine arising subapically from the right lateral margin of segment X.
Description. Male. Distal ends of antennae lost, only 29 segments remaining. Anterior wing length 3.5 mm. Ventral process of segment VI short spine in lateral view (as in Fig. 22). Ventral process of segment VII absent.
Male genitalia (Figs 12–16). Anterior margin of segment IX entire, straight in dorsal view (Fig. 14), but deeply excised in “U” shape in right pleural region (Fig. 13) and shallowly excised lateroventrally in left pleural region (Fig. 12), such that venter of IX forming asymmetrical triangular plate (Fig. 15); right posterolateral process of IX (p.l. sp.) forming huge spine (Fig. 13), longer and stouter than left process with distal half gradually narrowed to acute apex and turned caudodorsad, left process turned caudoventrad (Fig. 12). Tergite X fused with segment IX, about 1/3rd as broad as IX in dorsal view (Fig. 14), distal margin of X serrated and with its right apical end produced in lateral spine; dorsal spine (d. s.) long, slender, protruded laterally from right margin, about 1/3rd distance from apex in dorsal view (Fig. 14). Inferior appendages (inf. app.) short and stout, symmetrical; in ventral view (Fig. 15), triangular, broad basally, each with blunt apex bearing 1 seta, its anterolateral margin much longer than its inner margin and about 2/3rds as long as its basal width, at basomesal corners each with small, vertical, beak-like projection, with its apex curved mesad. Bilobed process (bil. pr.) stout, finger-like, shorter than inferior appendages, curved downward in lateral view (Figs 17, 18), in ventral view (Fig. 15) broadly V-shaped, with left lobe longer than right one, each lobe with 1 seta apically. Paramere spine (pa.) long, almost as long as genitalia. Phallus (Fig. 16) slender, basal portion about 3 times as long as distal portion, distal portion slightly protruded in small triangular “wings” at 1/4rth distance from its base, its apex enlarged and slightly bilobed, titillator encircling phallus 1 time.
Diagnosis. This species belongs to the Or. costalis Group. It is somewhat similar to Or. tombak Wells & Malicky, 1997, from Indonesia, and Or. sibuyan Malicky & Chantaramongkol, 2007, from the Philippines, in the general shapes of segment IX, tergum X, and the inferior appendages, but differs in that 1) tergum X has a long, slender branch protruding laterally from its right margin, (without such a branch in Or. tombak and Or. sibuyan); 2) the right posterolateral process of segment IX is longer and stouter than the left one (with the left posterolateral process absent in Or. sibuyan); and 3) the inferior appendages each have a small, vertical, beaklike projection at its basomesal corner (without such projections in Or. tombak).
Distribution. Type locality only.
description: Published as part of Lei, Zhou, Lian-Fang, Yang & Morse, John C., 2010, Six new species and 1 new species record of Orthotrichia (Trichoptera: Hydroptilidae) from China, pp. 29-41 in Zootaxa 2560 on pages 32-34, DOI: 10.5281/zenodo.197113