Cheumatopsyche engor Olah & Barnard 2008, new species
Creators: name: Oláh, János
name: Johanson, Kjell Arne
name: Barnard, Peter C.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Hydropsychidae
Cheumatopsyche
Cheumatopsyche engor

description: Cheumatopsyche engor Oláh & Barnard, new species   
Fig. 321–324  
 The species is similar to C. zao, new species, from Vietnam, but apices of the setaless mesocaudal lobe of segment X is less pointed in lateral and dorsal view; the dorsal margin of segment is sigmoid, not undulating; segment IX tergum is longer; coxopodites and harpagones slightly longer and nearly straight in ventral view; and the ventrovaudal spiny lobe is absent.   
Male. Body and wings brown with brown pubescence; membrane without spots. Maxillary palp segment I shortest, segment II longer, segments III and IV equally long, segment V as long as sum of segments I–IV. Head dorsum brown with 7 lighter coloured warts. Proepisternum without swollen setal wart. Protarsal claws asymmetrical, laterally flanked by setal bundle. Forewing length 5.8 mm, hind wing length 3.9 mm. Hind wing fork I absent.  
Male genitalia. Segment IX fused annularly; tergum nearly as long as sternum (Fig. 321); ventrocaudal spiny lobe absent; anterior margin of segment IX shallowly convex (Fig. 321); apical lobe on posterolateral margins broadly triangular, located at mid-height of segment, bordering wide articulation cavity of coxopodites. Spine row on posterior margins of segment IX complete; spines on dorsocaudal spiny lobe twice as long and stiffer than spines on apical lobe. Intersegmental step between segment IX and segment X shallow, formed by posteroventrad slope of segment X. Segment X long, subquadrangular, with concave dorsal margin at distal half (Fig. 321). Blunt apex of setaless mesocaudal lobe oriented posterad (Fig. 321); rounded triangular in dorsal view (Fig. 322); fused with apicoventral setal lobes. Apicoventral setal lobes delineated by setae as setose bulges. Pair of lateral setose areas forming pair of elevated warts centrally on segment X (Fig. 321, 322), well mesally of lateral margin of segment X (Fig. 322). Dorsal and lateral interlobular gaps absent. Transverse sutures ventrally straight, before recurving posterad toward dorsal margin of segment X (Fig. 321), dividing segment X into less sclerotised basal, and more strongly sclerotosed distal part. Longitudinal sutures present, running nearly parallel with ventral margin of segment X, meeting transverse sutures basally on segment X (Fig. 321); forming continuation of apicoventral setal lobes. Coxopodites slender along their length, robust, rod-shaped, nearly straight in lateral view; slightly curving mesad in ventral view (Fig. 323), strongly exceeding apex of segment X. Harpagones forming laterally flattened, broad, sharply triangular plates; apices curving dorsad (Fig. 321); in ventral view nearly straight, except with slightly mesad curving apices (Fig. 323). Phallotheca (Fig. 324) narrowing before mid-length; broadening apically due to ventral keel; sclerotised endothecal process almost truncate at apex; phallotremal sclerites sicle-shaped; vestigial ventral endothecal membranous lobe not visible.  
 Holotype male: MALAYSIA: Perak, Temengor Lake, ix–x.1993, light [G.S. Robinson] (BMNH, in alcohol).   
 Paratype: same data as for the holotype — 1 male (BMNH, in alcohol).   
 Distribution: Malaysia (Perak).   
 Etymology: from the name of the type locality.
description: Published as part of Oláh, János, Johanson, Kjell Arne & Barnard, Peter C., 2008, Revision of the Oriental and Afrotropical species of Cheumatopsyche Wallengren (Hydropsychidae, Trichoptera), pp. 1-171 in Zootaxa 1738 on pages 133-136