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Legs as in G. at o ma r iu s; ratio of length of legs 67 : 100 : 97. Large 

 setae black. 



Primary ventral setae of mid-femur (Figure 286, b) of different length, 

 situated basally, the apical seta in form of a thin, yellow spine, the other 

 a much longer, black seta (they are thick, dark setae of equal length and 

 form in G. at om a r iu s and G.signatipennis). Primary ventral setae 

 of hind femur also different, one of them a large, thin, yellow spine in 

 middle of segment, the other a long, black, distal seta (these setae are 

 of equal form, long, dark, situated close together in distal part in the 

 foregoing 2 species). 



Dorsal process of abdominal segment 1 slightly pointed. Lateral line 

 on segments 3—8. 



Sclerite of abdominal segment 9 grayish brown, with reddish brown 

 dots with dark outline laterally and at anterior margin; medioanal setae 

 black, long; anterior -angle setae black, shorter, and thinner; intermediate 

 and lateral seta thin, short, brown, forraer larger than latter; 2 thin, 

 moderately long, brown setae between medioanal setae. Sclerite "b" 

 of anal legs whitish yellow, with indistinct, grayish punctation, and a 

 narrow, reddish brown stripe at posterior margin ventrally and laterally; 

 median, apical seta long, black; a slightly shorter black seta nearby at 

 apical margin, a thin, black, moderately long seta laterally; a short black 

 seta on ventral side; one thin black seta apically near median margin, a 

 small black seta more basally some distance from the margin; surface 

 with 2—3 short, black setae. Sclerite "c" pale yellow, with fine punctation 

 and broad, black, lateral margin. 



Claw pale brownish basally, dark reddish brown apically, with 3 dorsal 

 denticles; seta 1 situated subdorsally, thick, short, reddish brown; dorsal 

 setae 2 (lateral) and 3 (naedian) thin, brown, relatively long; lateral seta 6 

 short, thin, situated subdorsally near end of suture; seta 5 smaller, thin, 

 situated subventrally on side of basal part near seta 8; ventral setae 7 and 8 

 light, short, thick; median seta 4 small, light, situated near 8. 



Case as in G. a t o m a r iu s; length to 45 mm (Figure 287). 



Pupa. Length 20.5— 21 .0 mm. Antennae of male pupae reaching abdominal 

 segment 8. Anteclypeus and labrum brownish; 2 short setae of anteclypeus 

 brown, thin, lateral seta small, light; median process of labrum indistinct; 

 seta 1 of process small, light; other 5 setae large, thick, blackish brown, 

 hooked at end. Mandibles dark reddish brown; distal part wide basally; 

 median blade straight, serrated; lateral setae brown, moderately long, 

 dorsal seta slightly larger than ventral. Midlegs natatorial, tarsal segments 

 and first segment of hind tarsi with sparse setae. 



Dorsal process of abdominal segment 1 large, brown, rugose dorsally, 

 the bifid apex with reddish brown lobes with 16—20 small, thick, black 

 spinules. Holding apparatus on segments 4—7 with the following number 

 of hooks: lV:3-2; V:3-4 + 18-20; Vl:3-5; VII:2-3. 



Anal rods 1.2 mm long, slightly wider apically, with large, reddish brown 

 setae; 1st seta situated near end of basal third, 2nd seta close to end of 

 middle third, 3rd and 4th setae situated subapically and apically. 



Case, as in G. at o m a r i u s, with large-meshed, sievelike membranes. 



Mode of life and habitats. Small, overgrown water bodies, 

 especially swampy spring puddles. 



211 



