Polyplectropus tepequemensis Neto & Pes & Hamada 2017, sp. nov.
Creators: name: Neto, Jaime De Liege Gama
name: Pes, Ana Maria
name: Hamada, Neusa
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Polycentropodidae
Polyplectropus
Polyplectropus tepequemensis

description: Polyplectropus tepequemensis sp. nov.
Figs. 3A–B, 4A–F
Diagnosis. The new species belongs in the Polyplectropus bredini Species Group Chamorro & Holzenthal 2010, due to the elongate dorsolateral process, submedially produced anterior margin of sternum IX, and clavate shape of the ventral branch of each inferior appendage. The male of the new species resembles that of P. kanukarum Chamorro & Holzenthal 2010 by having preanal and inferior appendages similar in shape. However, the male of the new species can be distinguished from that of P. kanukarum by having the posterior margin of sternum IX nearly straight (undulate in P. kanukarum), by the slightly sclerotized intermediate appendages that are broad in the basal 2/3 and abruptly slender apically (membranous and apically round in P. kanukarum), by the subrectangular mesoventral branch of each inferior appendage in ventral view (deltoid in P. kanukarum) and by the two phallic ducts, each with an endothecal spine (single endothecal spine in P. kanukarum).
Description. General color, in alcohol, dark brown. Wings with typical venation of genus (Figs. 3A and 3B); general color brown, with short bristles on membrane. Length of each forewing 3.8–4.8 mm (n = 5, mean = 4.16, SD = 0.46). Tegulae with long brown bristles. Legs brown. Abdominal segments I–VIII with no differentiating structures.
Male Genitalia. Sternum IX, in lateral view, subtriangular, anterolateral margin produced anterad below middle, posterolateral margin straight (Fig. 4A); in ventral view subrectangular, anterior margin concave, posterior margin nearly straight, posterolateral margins projected, acute (Fig. 4D). Tergum X membranous and oblong, bearing dorsal microsetae (Fig. 4A). Intermediate appendages slightly sclerotized, expanded laterad in middle, abruptly constricted subapically and tapering to their apices (Figs. 4A and 4B). Preanal appendages each tripartite: In lateral view, dorsolateral process as long as intermediate appendages, originating from dorsum of mesolateral process, basally directed subvertically anterodorsad, angled about 110° posterad at 1/3 length, tapering to acute apex (Fig. 4A); mesolateral process setose posteriorly, vertically elongate and subtriangular with round apicodorsal corner in lateral view (Fig. 4A), subquadrate in dorsal view (Fig. 4B); mesoventral processes fused in caudal view (Fig. 4C); in lateral view, hooked ventrad to acute apices, their concave anteroventral margins with strong spines, convex posterodorsal margins with digitate and setose dorsolateral lobes (Fig. 4A). Inferior appendages with anterior basal plate extending anterad nearly to anterior margin of sternum IX (Figs. 4A and 4D); each appendage bipartite apically, with dorsolateral branch twice as long as mesoventral branch: Dorsolateral branch setose and clavate in lateral view, with convex posteroventral margin (Fig. 4A), in ventral view narrow, with lateral margin convex and entire, mesal margin irregular and setose, expanding basally into mesoventral branch, apex subacute (Fig. 4D); mesoventral branch, in lateral view, short, basally broad, apically acute (Fig. 4A); in ventral view subrectangular, slightly sclerotized with apex acute (Fig. 4D). Phallus tubular and long; dorsal phallic sclerites oval in lateral view (Fig. 4F), apex resembling pin head; dorsolateral arms ellipsoid (Fig. 4E and 4F); endothecal membrane with pair of internal ducts, each bearing short and robust black spine (Figs 4E and 4F).
Female, pupa, larva, and egg: Unknown.
Holotype male. BRAZIL: Roraima: Amajari, Serra do TepequÉm, second order stream 03°87'39.6"N / 61°44'49.8"W, 30.v.2012 – 3.vi.2012, Gama Neto, J.L. coll. (alcohol, INPA).
Paratypes: 2 males, same data as holotype (alcohol, INPA); 2 males (alcohol, UFBA). Distribution. Brazil (Roraima).
Etymology. The specific epithet tepequemensis refers to the type locality.
description: Published as part of Neto, Jaime De Liege Gama, Pes, Ana Maria & Hamada, Neusa, 2017, Checklist and new species of caddisfly (Insecta: Trichoptera) from Roraima state, Brazil, pp. 475-488 in Zootaxa 4338 (3) on pages 478-481, DOI: 10.11646/zootaxa.4338.3.4, http://zenodo.org/record/1037010