1. Halesus interpunctatus Zetterstedt 



Klapalek, 1888:20-22, Figure 7.- Siltala, 1903a:31-34, Figure 9.- 

 Ulmer, 1909:68-69.- Siltala, 1904:69; 1907:503-504,507-510.- Ulmer, 

 1909:268-269, Figure400a.- Dohler, 1914:50.- Lestage, 1921:785-795, 

 Figure 281e.- Lepneva, 1928:80; 1940:216, Figure 160, 3. 



Full-grown larva. Length 2 0— 2 6 mm. Head mainly bi'own, lighter in 

 some places; punctate pattern on brown background, distinct; dots large, 

 chestnut brown, with narrow, dark margin (Figure 498, A). Frontoclypeus 

 almost uniformly brown, slightly lighter anteriorly, in middle, laterally, and 

 behind wedge-shaped pattern;''-' margin darker at tentorial pit and further 

 posteriorly; anterior part with 2 indistinct dots laterally and behind median 

 pit; wedge-shaped pattern distinct posteriorly, with less distinct dots 

 anteriorly. Eye surrounded by a nai-row, light stripe; a dark reddish brown 

 area anteriorly; palp with brown sensilla; light specimens have indistinct 

 dorsal stripes along frontal sutures, and transverse rows of 3—4 indistinct 

 dots; numerous dots lateral to coronal suture; space between dorsal stripes 

 and lateral surface of head lighter; sides with longitudinal rows of numerous 

 large dots behind eye. Ventral surface mainly brown, lighter at anterior 

 margin, with large, pale, brownish areas with numerous, sometimes indistinct 

 dots neai' occipital foramen. Gula long (Figure 498, B). 



Large setae brown or dai-k brown, largest setae relatively thin. Median 

 and intermediate anterior-margin setae brown, moderately long, lateral 

 anterior-margin seta light, cui'ved inward; antei-ior- frontal seta the same, 

 middle frontal seta large, moderately long, posterior frontal seta small, 

 thin; seta 7 strong; setae 9 and 14 long, dark brown, but only slightly thicker 

 than middle frontal setae, second longer than first, almost as long as width 

 of head; seta 10 small, transparent; seta 11 slightly larger, thin, brownish; 

 seta 13 similar; seta 12 thin, moderately long; seta 15 thin, light brown, 

 moderately long, only slightly longei- than middle frontal seta; seta 16 short, 

 light, procumbent; seta 17 strong, large, as long as middle frontal seta. 



Labrum with reddish brown dorsal sclerite and narrow, membranous 

 anterior margin; posterior angle sclerites dark brown; a small, bi-own dot 

 behind median pit; seta 1 situated on membrane, in form of a thick, light 

 spine with thin pointed apex, in contrast to usual blunt end; setae 2 and 3 

 situated submarginally, light, seta 2 thick, blunt, curved inward, seta 3 

 straight, short, with thin end. 



Mandibles black, with small, blunt teeth. Left mandible with 2 teeth and 

 a wide tooth-shaped process on dorsal blade dorsal to middle tooth, ventral 

 blade with one tooth in addition to distal tooth. Right mandible with a large 

 distal tooth, and 4 teeth on dorsal blade, last tooth in form of a rounded, 

 sometimes indistinct, process; ventral blade distally with an indistinct tooth- 

 shaped process. Setae situated at basal margin; dorsal seta short, brown, 

 ventral seta small, lighter. 



Sclerites of cardo light brown, with slightly projecting anterior margin; 

 posterior margin reddish brown; median margin in form of black, slightly 

 oblong spot; lateral margin reddish black anteriorly; lateral seta small, 

 light, second seta dark brown, slightly larger. Submentum with light, whitish 

 membranous part; lateral sclerite triangular, reddish brown; median 

 sclerite in form of a dark, narrow, oblique plate; space between sclerites 



" Described from preparations. 



353 



