Prothorax (Figure 395) more strongly laterally compressed than meso- 

 and metathorax; pronotum covering the dorsum completely and the sides of 

 the segment partly, reaching its anterior margin; lateral and posterior 

 margin of pronotum brownish black; posterior angles black; area near 

 anterior margin and posteriorly also darker than the background, which is 

 yellowish or yellowish brown. Meso- and metanotum not reaching 

 anterior margin of the segment, leaving a narrow membranous stripe; 

 sclerites darker posteriorly than anteriorly, brownish or brown; dark area 

 on metanotum may occupy the greater part of the sclerite. Pronotum with 

 a long primary anterior -angle seta and a thin, moderately long secondary 

 seta; anterior margin with 3 series of seta, but no primary anterior -angle 

 seta displaced, to the surface of the sclerite; the first series of secondary 

 anterior-margin setae consists of 2 long setae, which are almost as long as 

 the anterior -angle seta; the second series consists of 9—11 anteriorly- 

 curved light yellow setae and several straight setae lateral to them; the 

 third series consists of a few small setae posterior to the yellow setae; 

 pronotum with a transverse row of 4 setae, one posteriorly displaced 

 anterior -margin seta and 3 posterior surface setae; 2 setae near the 

 lateral margin. Primary ante r:' or -angle seta on meso- and metanotum 

 shorter than on the pronotum; 4 or 5 short, thin, secondary setae near it; 

 primary anterior-margin seta long; long secondary anterior-margin setae 

 absent; there are 3—4 curved yellow setae; medioanal seta longer than 

 the other 2 surface setae. The appearance of secondary setae and the 

 increase in their number on the dorsum of the thorax in the early stages 

 are shown in the table on p. 361 . 



Pleuron of the prothorax (Figure 396) with a narrow membranous stripe 

 on the epimeron; trochantin with a blunt, short, hornlike process with 

 membranous apex; a small, but relatively thick seta on the outer side, near 

 the distal margin; both setules are situated on a sclerite; seta of epimeron 

 situated near the margin of the posterior part. Pleuron of meso- and 

 metathorax consisting of two sclerites in the episternal area, an anterior 

 sclerite including the trochantin, and a posterior sclerite contiguous with the 

 pleural groove; anterior sclerite with a large seta and two setules; 

 epimeron with a long process around the base of the coxa posteriorly; seta 

 short, situated near the anterior margin. 



Prothorax with a small single median sternite. 



Legs pale yellow; basal margin of coxae brownish black, distal margin 

 brown. Forelegs short (Figure 397, A); distal part of trochanter broad, 

 contiguous with the basal margin of the femur which is markedly enlarged by 

 the ventral process; ventral setae of femur on this process (like adjacent 

 ventrodistal seta of the trochanter) long and spinelike; tibia with a large 

 distoventral process; both distoventral setae form slightly flattened, 

 lanceolate spines; posterior spine slightly smaller than anterior spine 

 (Figure 398); there are 4 chisel- shaped processes between these setae and 

 lateral to them; an additional spatulate process anteriorly, which is divided 

 at the end in a fingerlike manner; anterior seta situated distally, forming 

 a short, dark spine; posterior seta normal and thin; both ventrodistal setae 

 326 of tarsus (Figure 399) also forming strong, curved spines between which 

 2 large chisel-shaped processes and a group of very thin spinules are 

 situated; claw of forelegs only slightly longer than tarsus, shining brown; 



357 



