Segment 9 (Figure 605) with a small setuliform anterior -margin seta,, a 

 posteriorly-displaced anterior -angle seta and 3 surface setae at the 

 posterior margin dorsally on each side sclerite small, light, punctiform; 

 medioanal seta long, dark; intermediate seta thin, small; lateral seta 

 moderately long. Large lateroventral seta on the ventral surface of 

 segment 9 strong, displaced laterally; it is the longest seta of the sclerite; 

 sclerite also with numerous thin secondary setae among which the ventral 

 primary setae (median and intermediate setae) stand out by their length. 



Section "a" of anal legs (Figure 605) longer and broader than section "b M ; 

 its distal third with an indistinct transverse stripe on the outer side; 

 numerous thin secondary setae of varying length ventrally, distally and 

 laterally. Sclerite of section "b" situated on the outer side, covering the 

 leg laterally, partly dorsally and ventrally; sclerite grayish brown dorsally, 

 lighter laterally, pale yellow ventrally, with indistinct dark dots in some 

 places; basal margin black; a short lobe distally on the outer side; an 

 X- shaped black process for articulation with the claw in the middle. A long 

 dark primary seta above the basal branches of the process (Figure 606); 

 2 other primary setae of sclerite "b" indistinguishable among the numerous 

 secondary setae of the sclerite and of the membranous surface (Table 10). 

 Section "c" with a light gray small sclerite and a small primary seta near it. 



Claw long (Figure 607) narrow, slightly curved; membranous transverse 

 stripe rounded laterally, broad, narrow in the middle, separated by a narrow 

 sclerite from the mediobasal rounded indentation of the claw. Ventrally, 

 beginning at the distal margin of the transverse stripe, there are small 

 spinules which form a continuous row on the outer side; they form rarefied 

 groups on the inner side; rows of spinules converging distally forming a 

 small band of spinules which are longer on the dorsal side. Setae straight, 

 mainly thin, grouped near the basal part of the claw; the long seta 1 on the 

 dorsal side of this part; the short seta 2 situated on the membranous trans- 

 verse stripe; the shorter, thin seta 5 situated lateral to seta 1; the long, 

 thick seta 3 situated inward; seta 6 long, thin, situated on a membrane; 

 seta 7 absent, replaced by a pit; thin, small seta 8 situated ventrally on a 

 small sclerite, near the base of the membranous transverse stripe; the 

 small, light, thin seta 4 situated basal to it, on the membrane of the medio- 

 basal indentation. 



The larva builds a tubular dwelling chamber and a sac -shaped capturing 

 net (Figure 608). 



Young larva. First stage (Figure 609).* Length 2—3 mm. Ratio of 

 length of head, thorax and abdomen (without anal legs) = 10:16:36. Sutures 

 of head incompletely marked; only the coronal suture and the base of the 

 frontal sutures present, reaching the posterior frontal setae. Upper blade 

 of right mandible with 2 distinct teeth. 



Pronotum (Figure 610) without setae on the lateral margin; processes 

 of posterior angles absent; long anterior -angle setae situated at a distance 

 from the margin. Setae of propleuron (seta of trochantin and seta of epi- 

 meron) well developed, distinct. Tibia of forelegs shorter than tarsus, 

 without comb of spinules; claw thin, longer than tarsus; seta situated near 

 its middle; a very thin spine basal to the seta; the long primary setae of the 



• Siltala (1907:406, 625, Plate 14, Figure 6, a, c, e, f) gave a short description of the lst-stage larva of 



P. conspersa; he gives figures of the 1st- and 2nd-stage larvae on Plate 14; these plates are reproduced 

 here. 



482 



