Number and arrange 

 Klapalek) 



gement of gills of pupa of B.minuta fafter 



Segment 



Dorsal 



Pleural 



Ventral 



2 



8 



4 





4 



3 



7 







4 



4 



3 







4 



5 



2-3 







3 



6 









2 



7 









1-2 (0) 



529 



530 



Pronotum yellowish, with dark spots, without anterior -angle processes. 

 JVlesonotum grayish, with a few dark dots. Numerous secondary setae on 

 pronotum and mesonotum (Figure 852). Metanotum membranous. 



Legs (Figure 852, B, C) yellowish; ratio of length of legs 70:100:160. 

 Hind legs narrow, very long, femur with slightly convex dorsal margin and 

 straight ventral margin, shorter than tibia; numerous secondary setae on 

 femur, trochanter, and coxa; tibia and tarsus rodlike, narrow, almost of 

 equal length, with long, thin, primary setae; tibia with about 15 small, 

 secondary setae dorsally near base. Claw thin, slightlj^ curved, longer 

 than tarsus, with thin, spine-shaped, basal seta. 



First abdominal segment with dorsal and lateral processes. Lateral 

 line replaced by small sclerotized dots with a small seta on segments 3—8. 

 Gills with 2—6 short filaments. 



Gills sometimes present also on segments 6—7 (Morton, 1890:234). 



Claw of anal legs with 2 dorsal denticles at apex. 



Case (Figure 850 ) 7 — 9 mm long, made of sand grains, with smooth 

 surface, conical, markedly tapering posteriorly. 



Pupa. Body narrow, 4.3— 6.0 mm. long. Male pupae smaller than female 

 pupae. Anteniiae thin, filiform, almost reaching end of body in male pupae, 

 to the posterior margin of abdominal segment 6 in female pupae. Labrum 

 more semicircular than in Beraea; anteclypeus with strong, moderately 

 long setae. Distal part of mandibles narrow, sickle-shaped, with serrated 

 inner side (Figure 853, A). 



Wing sheaths narrow, with pointed ends, reaching abdominal segment 6 in 

 male pupae, segment 5 in female pupae. Midlegs natatorial, with normally 

 developed setae on tarsal segments. 



Gills with 2 — 8 filaments on segments 2—7. 



Lateral line absent. Presegmental plates of segments 3—6 small, 

 oval, with 1 or 2 hooks; segment 5 with transverse, oval, lateral, 

 postsegmental plates with 2 — 3 spinules directed anteriorly. 



Anal appendages (Figure 853, b) rodlike, long, pointed, with 3 long setae 

 dorsally; inner side with a small, subapical process with a strong, spine- 

 shaped seta at apex. 



660 



