6.5— 7.0 mm; head wider posteriorly, 1.8 mm wide at the level of the eyes; 

 2 mm wide posteriorly; ventral side slightly concave in profile; dorsal side 

 slightly convex; length of frontoclypeus 3.4 mm, length of coronal suture 



2.2 mm. Setae relatively short, most of 

 them brown and moderately thick 

 (Figure 524). 

 380 i^oPI Antennae situated at the anterior margin 



and differentiated as a small light spot; 

 both antennal sensillae cylindrical, brownish; 

 setae transparent; 2 of them relatively large, 

 the third small. Eyes small, situated on a 

 large, whitish yellow spot in the anterior 

 part of the head. Gula dark brown. A large 

 median dot near the anterior margin of the 

 frontoclypeus; short, dark longitudinal 

 stripes with three large dots on each lateral 

 to this dot; two large dark dots near the 

 stripes; a dark triangular spot near the 

 anterior curve of the frontal sutures; 

 a broad, dark longitudinal stripe in 

 the middle of the sclerite; anterior half of 

 this stripe with two large asymmetrical 

 dots; 4 or 5 dots near the curvature of the 

 frontal sutures; posterior part of sclerite 

 with a curved transverse stripe with 

 10—12 minute dark dots and two large dots; 

 a large dark dot anterior to the base of the 

 posterior frontal seta. Margins of sclerite 

 dark at the curvature of the frontal sutures; 

 a short stripe with a dark dot lateral to the 

 suture. Rows and groups of large blackish 

 brown dots lateral to the epicranial suture 

 and on the sides of the head, from the 

 posterior margin of the periocular area to 

 the occipital foramen; a large dark dot on 

 both sides of the gular suture in the anterior 

 third of the ventral side; stripes and spots 

 with rows and groups of two to five dots 

 further posteriorly; two large dots in the 

 posterior quarter of the head lateral to the 

 suture; groups of small dots near the occipital foramen. 



Median and intermediate anterior -margin setae of the frontoclypeus 

 straight and brown, directed anteriorly, relatively long, reaching anterior 

 margin of the labrum; lateral seta transparent, curved to the anteclypeus. 

 Anterior and middle frontal setae situated on a dark spot near the 

 curvature of the anterior branch of the frontal sutures; the former seta 

 transparent and curved, the latter inclined anteriorly and brown; postero- 

 frontal seta similar, situated near the transverse stripe of dots. Setae 9 

 and 7 brown, situated near the anterior margin of the head, at a distance from 

 the eye; setae 11 and 10 small and transparent; the brown, moderately thick 



FIGURE 523. Stenopsyche grisei 

 pennis McL. Full-grown larva 



425 



