Median tergites of metanotum (Figure 614) yellowish, rounded, more 

 distinct than in preceding forms; lateral tergite narrow, chestnut brown, 

 with 11 — 12 setae anteriorly, including 2 thick, black, moderately long setae, 

 longer than others. 



Trochantin of prothorax as in D. p u g na x, black basally, yellowish brown 

 apically, with a short, thin, brown seta. Mesopleuron with large, black, 

 anterior-angle spot. 



Legs reddish brown, without spots; coxae darker, blackish in some places; 

 articulation between femur and tibia with a large, black spot; chaetotaxy as 

 in preceding forms; large setae black. 

 3 62 Basodorsal seta of fore coxa strong, black, moderately long; anterior 

 apical dorsal seta situated in basal part, short; posterior distodorsal seta 

 long; 2 similar, long, secondary setae and a 3rd slightly shorter and thinner 

 seta further distally at margin; basal of the 2 primary anterior setae 

 situated near apical dorsal setae, short, black, strong; the 2nd on surface 

 in middle of coxa, black, long; distoventral setae black, strong, slightly 

 shorter. Light, feathered chaetoids dense and large in distal part of ventral 

 margin of trochanter, sparse at ventral margin of femur. Primary ventral 

 setae of femur represented by thick, yellowish spines, basal spine blunt, 

 apical larger, pointed; posterior primary seta black, moderately long, 

 situated basal to spines. Basodorsal seta of mid-coxa thick, moderately 

 long; anterior distodorsal seta moderately long, black, situated some 

 distance from apex of depression; posterior distodorsal seta long; 2 long, 

 secondary setae and one shorter seta distally at margin of depression; 



2 secondary setae, close together basally at margin one of them long, the 

 other thin, shorter; primary anterior setae of coxa situated in middle, one 

 of them short, strong, subdorsal; the other long, black, subventral; disto- 

 ventral setae black, equally long. Basodorsal seta of hind coxa long, black 

 like other setae; anterior distodorsal seta long, situated some distance from 

 apex of depression; 2 long, black, secondary setae and one brown, shorter 

 seta distally at anterior margin; one primary distodorsal seta, 3 long, black 

 setae, and one brown, moderately long seta at posterior margin of depression; 



3 long, black, secondary setae basally; posterior surface with 2 secondary 

 setae in middle, one of them short, brown, the other black, moderately long; 

 primary anterior setae long, black, situated subdorsally in basal half and 



363 subventrally in apical half; both distoventral setae black, moderately long; 

 chaetoids in ventral distal part of trochanter and at ventral margin of 

 femur, sparse. 



Gills on segments 2 — 7, postsegmental, only on dorsal side. 



Tergite of segment 9 snaall, indistinct, pale chestnut brown; miedioanal 

 and anterior -angle setae black, long, the latter larger; intermediate and 

 lateral setae light, thin, short. 



Sclerite "b" light brown, chestnut brown dorsally at distal margin and 

 laterally, reddish brown ventrally; represented dorsally by a narrow, distal 

 stripe as in preceding forms; dorsal, median, distal, and neighboring setae 

 black, thick, long, largest setae of the body; subapical and lateral seta 

 similar, black, thinner, shorter; ventral seta brown, thin, moderately long. 

 Sclerite "c" light brown, with reddish brown, lateral margin; seta short, 

 dark brown. 



453 



