Stenopsyche

Hoang, Duc Huy & Bae, Yeon Jae, 2007, Vietnamese species of Stenopsyche McLachlan (Trichoptera: Stenopsychidae), Zootaxa 1624, pp. 1-15 : 11-12

Stenopsyche sp. 1 ( Figs. 7 a–7e)

Larva. Body 30 mm, width 3.5 mm. Sclerites brown, with distinct punctate pattern. Head: Head ( Figs. 7 a–7c) 4.3 mm, width 1.7 mm, posteriorly somewhat wider, dorsally slightly convex ventrally concave in lateral view; ground color brown, with distinct punctate pattern throughout head surfaces, with light markings around eyes; setae relatively long, moderately thick, brown. Frontoclypeus anterior margin moderately round. Labrum with yellow hair near anterior membranous margin. Mandibles dark brown, with apical teeth; left mandible with brush of setae in median depression. Mentum triangle; submentum dark brown, with setae on anterior angles. Thorax: Thoracic nota oblong, yellowish brown, with distinct punctate pattern, with broad black posterior margin, with median suture, with few long setae, with fringe of short slender setae on anterior margin. Prothoracic pleura brown; epimeron surrounding coxa with black median part and posterior margin. Posterior prosternite ( Fig. 7 d) anteriorly with narrow black median part extending posteriorly to both sides. Forecoxae with two dorsal conical processes ( Fig. 7 e); basal process 0.2 mm, with apical seta; apical process 0.3 mm, straight. Legs nearly equal in length, yellowish brown, without punctate pattern; femora slightly broader apically; claws bifid, hooklike. Abdomen: Abdomen almost uniformly broad, greenish grey in live specimens, purple in alcohol, with scarce setae. Anal prolegs brown, stout, with few dark setae; claws hooklike.

Diagnosis. The larva of this species is similar to that of S. ulmeri Navás in having distinctive punctate pattern in head, but it an be distinguished by the shorter dorsal processes of forecoxae ( Fig. 7 e), longer median part of posterior prosternite ( Fig. 7 d), and smaller body size.

Material examined. Vinh Phuc Prov.: 2 larvae, Tam Dao National Park, Thac Bac, alt. 200–700 m, 10 x 1998, Y.J. Bae, 16 x 2000, V.V. Nguyen.

Distribution. Northern Vietnam (Vinh Phuc Prov.).

Figures

FIGURE 7. Stenopsyche sp. 1, larva. a: dorsal head; b: lateral head; c: ventral head; d: ventral prothorax; e: processes of right forecoxa.