Full-grown larva. Length 19— 24 mm. Wide anterior part of dark 

 figure on frontoclypeus (Figure 323, A) truncate laterally in light specimens 

 as in L. r ho m b i c u s, and does not reach frontal sutures; in more 

 common, dark specimens, pattern covers whole width of sclerite, as in 

 L. politus and L. fl a v i c o r ni s, but its lateral area, which reaches 

 frontal sutures, is lighter than other part. Anterior margin with shallow, 

 lighter, median area; longitudinal stripe wide, with nearly parallel sides, 

 reaching frontal sutures in posterior angle; indistinct punctation anteriorly 

 lateral to median pit; wedge-shaped figure in posterior part with coarse, 

 distinct punctation. Dorsal stripes distinct, extending from anterior to 

 posterior margin, with short, transverse rows of dots lateral to frontal and 

 coronal sutures in posterior part; longitudinal rows of dots along lateral 

 stripes. Area between dorsal and lateral stripes mainly light, slightly 

 darker in middle, and near occipital foramen. Ventral surface mainly 

 light, with slightly dark lateral areas; groups of dots near occipital 

 foramen. Gula light, yellowish, or with slightly dark posterior part 

 (Figure 323, b). Setae as in preceding descriptions of forms; anterior - 

 margin setae thin, intermediate longer than median seta, lateral seta light, 

 curved inward; seta 7 moderately long, strong; seta 14 dark, thick, long; 

 seta 9 slightly smaller; seta 11 thin, short, situated behind 9; seta 10 light, 

 short, situated lateral to eye; seta 12 thin, moderately long, situated behind 

 eye; seta 13 short, thin, situated near 14; seta 15 thin, long; seta 17 

 moderately long; seta 8 small, strong; seta 18 small. 



Labrum (Figure 324, A) with uniformly reddish brown dorsal sclerite; 

 a small dark spot behind median pit; setae as in Figure 324, A. 



Mandibles (Figure 324, B) black; distal margin of left mandibles with 

 5 teeth, middle tooth larger than others; dorsal blade with a small, round 

 process distal to brush; ventral blade slightly concave; distal margin of 

 right mandible with 5 teeth, subventral tooth larger than others, 3 teeth 

 further dorsally, marginal tooth broadly rounded, merging with slightly 

 convex margin of dorsal blade, one tooth further ventrally; ventral blade 

 slightly concave; lateral setae situated basally, light, strong, dorsal seta 

 slightly larger than ventral. 



Pronotum (Figure 325) with narrow, dark, anterior margin; lateral 

 margin blackish near anterior angle; posterior margin with a broad, black 

 ._„ stripe. Anterior part of pronotum chestnut brown, groove with blackish 



brown stripe in middle; posterior part dark near margin; punctation distinct, 

 setae black. 



Mesonotum chestnut brown; middle of anterior half darker laterally; 

 posterior margin narrow, black, broadly black laterally. 



Prosternite (Figure 326) less dark posteriorly than in L. f 1 a v i c o r n i s; 

 median and lateral parts brown, with blackish brown punctation. Horn thin, 

 yellowish at end. Mesosternites in form of pinkish plates with 6—7 large 

 blackish brown dots. Metasternites in form of narrow, white plates with 

 4—5 small, pale dots. 



Fore femur (Figure 327) with thick, black, posterior seta, situated 

 subventrally in middle between primary ventral setae, usually closer to 

 distal seta. Hind trochanter with 5—6 black, short and small, secondary 

 setae. Gills on segments 2—8. 



241 



