Stenopsyche McLachlan

Hoang, Duc Huy & Bae, Yeon Jae, 2007, Vietnamese species of Stenopsyche McLachlan (Trichoptera: Stenopsychidae), Zootaxa 1624, pp. 1-15 : 2

Genus Stenopsyche McLachlan

Stenopsyche McLachlan 1866: 264 .

Type species: Stenopsyche griseipennis McLachlan.

Adult. Head relatively short; ocelli large. Forewings 14–29 mm, relatively long, narrow, elliptical with blunt apex, brown with many light speckles. Hind wing relatively short, white, opaque, with relatively large anal area. Tibial spurs of fore, mid, and hind leg 3.4.4 (except reduced in species of S. sauteri -group and males of S. siamensis ). Male genitalia segment IX with blunt apicolateral angle; segment X small, moderately sclerotized, flanked laterally by intermediate appendages; preanal appendages very long, forming pair of large oval forceps; inferior appendages with tongue-like strips, with long, heavily sclerotized glabrous superior arm directed posterodorsally; phallus with heavily sclerotized phallobase, with membranous endotheca; endotheca with strongly developed armature of spines.

Larva. Live specimens greenish dark brown. Body relatively large, 30–52 mm; sclerites yellowish to blackish brown, with dark distinct punctate pattern. Head oblong, narrow. Labrum robust, broad, with dense brush of gray hairs anterolaterally. Mandibles strong, black, with apical teeth; left mandible with brush of setae in median depression. Mentum large; submentum with round process medially. Prothorax as broad as head; posterior prosternite wide, elongate laterally. Forecoxae with two dorsal processes.

Remarks. Schmid (1969) recognized six species groups of Stenopsyche by adult characters and three of them, the apiguna -group, the marmorata -group, and the pubescens -group, occur in Vietnam (see Key to Vietnamese Species of Stenopsyche , below).

Stenopsyche coomani Navás 1932 (originally described from Hoa Binh Province), S. fissa Navás 1932 (originally described from Lao Cai Province), and S. vicina Navás 1932 (originally described from Lao Cai Province) are regarded as nomina dubia (see Remarks under the species treated, below). Specimens of S. hamata Navás 1930 (originally described from Ha Tay Province) and S. uncinata Navás 1930 (originally described from Vinh Phuc Province) were not available for study.