Propleuron (Figure 664, B) longitudinal; pleural suture in form of a short, 

 dark, transverse groove; epimeron with dark margin posteriorly and 

 laterally, seta near suture thin, dark, long; episternum larger than 

 epimeron; trochantin large, with a pointed, conical process; a small, dark 

 seta and 2 light setules basalto process on anterior side; sclerite with numerous 

 minute chaetoids. Pleurites of meso- and metathorax yellowish brown, 

 oblong, with narrow, black, pleural suture and wide, short, distal margin of 

 episternum, and a long black seta laterally; seta of epimeron similar, 

 situated distally at suture. 



Prosternite represented by 2 transverse sclerites, fused in middle, each 

 with a dark anterior stripe. Sternites of meso- and metathorax in form of 

 small light sclerites with a narrow, dark, lateral stripe. 



Forelegs massive, brown. Coxa relatively short; all 3 dorsal setae dark, 

 moderately long, strong, one of 2 anterior surface setae the same, the 2nd 

 short; a subventral group of 9 dark, brown, short, secondary setae 

 posteriorly; chaetoids very small anteriorly; dense on ventral side as are 

 mid- and hind legs. 



Posterior seta of trochanter moderately long, subdorsal; anterior seta 

 short, subventral; apical of the 3 ventral anterior setae light, thin, small; 

 intermediate seta small, brown; basal seta short, light; both posterior 

 ventral setae situated close together subapically, dark, apical seta long, 

 subapical shorter. 



Femur slightly curved; apical dorsal seta moderately long, basodorsal 

 seta shorter; ventral setae situated distally, long, posterior subventral seta 

 the same; anterior subapical seta short, strong, reddish brown; small light 

 spinules ventrally between setae. Tibia shorter than femur, with 3 

 moderately long setae dorsally, one of them subapical, dark, strong, other 

 2 thin, light brown, apical; posterior seta situated subdorsally, strong, short, 

 dark brown; anterior seta spine -shaped, curved, reddish brown; 2 short, 

 blunt spines ventrally, anterior one shorter; a row of light spinules 

 ventrally. 



Number and arrangement of gills of G. extensum 



Segment 



Dorsal 



Pleural 



Ventral 



2 



3 



2 



3(2) 



3 



3 



2 



3 



4 



3 



2 



3 



5 



3 



2 



3 



6 



3 



2 



3 



7 



3 (2-1) 



1 



2 



8 



1 







509 



