Hydromanicus malayanus Banks 1931
Creators: name: Prommi, Taeng On
name: Permkam, Surakrai
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Trichoptera
Hydropsychidae
Hydromanicus
Hydromanicus malayanus

description: Hydromanicus malayanus Banks 1931
(Figs. 1–18)
Larva: Total length 11.0–12.00 mm (n=10). Overall body shape typical for Hydropsychidae.
Head: Head capsule length, 1.19–1.22 mm; width, 0.94–1.03 mm. Dorsum of head brownish (Fig. 2). Dorsal and lateral portions of head covered with long, black, truncate peg setae, with tapered setae in anterior three-fourths (Figs. 13–14). Frontoclypeus covered with same setae. Frontoclypeal apotome strongly indented laterally; anterior margin convex medially (Figs. 2, 13). Ventral surface of head brownish, with stridulatory lines narrowing posteriorly; posterolaterally with group of muscle scars (Fig. 3). Mandibles dark-brown with 2 apical and 3 mesal teeth, left mandible with well developed setal brush; outer surfaces of both mandibles with scattered setae (Fig. 4). Labrum brown; rounded in dorsal view; bearing well-developed, lateral, golden-yellow, pectinate setae and long, stout, dark, dorsal setae, with one pair of longer, dark anteromesal setae (Fig. 5). Submentum brown; lacking anteromesal cleft; anterior margin concave (Fig. 3). Anterior ventral apotome broadly triangular; posterior ventral apotome small, triangular (Fig. 3).
Thorax: Nota brownish (Figs. 6–8) covered with same setae as on dorsum of head (Figs. 13–14). Prosternite brown; broadly transverse; dark band along posterior margin; with pair of large sclerites (Fig. 9). Foretrochantin forked; dorsal branch as long as ventral branch (Figs. 1, 10). Forelegs stouter than other legs, each with femur widened; femur with long setae in ventral margin; tibia and tarsus with rows of short, stout setae (Fig. 10). Mid- and hind legs similar in size, shape, and structure; with dense setae on mesal surface of coxa through tarsi (Figs. 11–12). Mesosternum with one pair of gills; metasternum with 2 pairs of gills; gills consisting of central stem bearing many lateral filaments (Figs.1, 17).
Abdomen: Abdominal segments with dense brown, diamond-shaped setae in various sizes (Figs. 1, 15–16). First sternum with 2 pairs of gills with adjacent bases. Segments II–VI each with 2 pairs of lateral gills and 1 pair of median gills (Fig. 1). Sternum VII without gills. Sternum VIII with pair of small, subtriangular sclerites bearing spike-like setae. Sternum IX with pair of large, sclerotized triangles bearing spike-like setae emanating from prominent sockets (Figs. 1, 18). Tergum IX with pair of small lateral and dorsolateral sclerites. Anal prolegs each with bent claw and cluster of long bristles, spike-like setae present on dorsal surface (Fig. 1).
Material examined: THAILAND. SONGKHLA Prov.: Ko Hong Nature Preserve, 50 m. 09°51' N, 098°37' E, 27-vi-2006, Prommi, 12 larvae, 3 male pupae, 1 male adult; same locality, 06-viii-2006, Prommi, 18 larvae, 3 male pupae, 1 male adult; same locality, 06-vii-2006, Prommi, 18 larvae, 3 male pupae, 4 male adults; same locality, 12- ix-2006, Prommi, 18 larvae, 3 male pupae, 1 male adult; same locality, 01-x-2006, Prommi, 18 larvae, 3 male pupae, 1 male adult; same locality, 06-xi-2006, Prommi, 18 larvae, 3 male pupae, 1 male adult; same locality, 14- xii-2006, Prommi, 18 larvae, 3 male pupae, 2 male adults; same locality, 03-i-2007, Prommi, 18 larvae, 3 male pupae, 2 male adults; same locality, 10-ii-2007, Prommi, 18 larvae, 3 male pupae, 3 male adults; same locality, 26- iii-2007, Prommi, 18 larvae, 3 male pupae, 2 male adults; same locality, 22-iv-2007, Prommi, 18 larvae, 3 male pupae, 2 male adults; same locality, 05-v-2007, Prommi, 18 larvae, 3 male pupae, 1 male adult; same locality, 09- vi-2007, Prommi, 18 larvae, 3 male pupae, 1 male adult.
description: Published as part of Prommi, Taeng On & Permkam, Surakrai, 2015, Larvae of Hydromanicus (Insecta: Trichoptera: Hydropsychidae) from Thailand, pp. 467-482 in Zootaxa 3914 (4) on page 468, DOI: 10.11646/zootaxa.3914.4.6, http://zenodo.org/record/242216