Pronotum (Figure 221 ) mainly chestnut brown, darker near median suture 

 than in lateral and posterior areas; anterior quarter of tergite light 

 yellowish, with distinct anterior angle> anterior margin brownish; lateral 

 margin darker; posterior-angle spot small, black. Tubercles of dark part 

 keel -shaped, divided into 2, 3, or 4 parts, pointed or with small spinules; 

 spinules simple in the light area, dense in the anterior angle, sparse in the 

 middle; dots large, light brown, distinct; posterior margin with reddish 

 brown, spinulose part; black stripe wide, divided in the middle; posterior- 

 angle process with small, light spot and a large, black, lateral margin 

 fused with the black, posterior-angle spot. Anterior -angle and anterior - 

 margin primary setae blackish brown, larger than others; other primary 

 and large secondary setae chestnut brown; thin secondary setae not 

 numerous, lighter, brownish; small, thick, light setae basally, characteristic 

 for Ap at an i a, in different parts of the tergite. 



Mesonotum (Figure 222) chestnut brown, darker anteriorly, with dark 

 brown anterior margin, lighter laterally and posteriorly; posterior part 

 light brown; spinules in middle dark, small, in rows of 2, 3, or 4; spinules 

 in lighter lateral and posterior parts paler, smaller and sparser; posterior- 

 angle area large, dark reddish brown, with large, black spot and coarse, 

 black, oblique streaks. Setae as in Figure 222; medioanal seta and 

 anterior -angle setae, 1 primary and 2 secondary, blackish brown, longer 

 than the others. 



Number and arrangement of gills of A copiosa 



Segment 



Dorsal 



Ventral 



1 



1 CO) 





2 



2(1) 

 1 



1 



3 



2(1) 

 1 



1 (very small) 

 1 



4 



1 



1 



5 



1 



1 



6 





1 



7 





1 



Posterior median tergites of metanotum in form of small, thin, grayish 

 plates with 3 setae, a long, thick medioanal, and 2 thin setae, one of them 

 moderately large, the other short. Lateral tergite (Figure 223) in contrast 

 to the species of Apatania described above, without transverse band 

 but with a large chestnut brown, oblong spot with narrow, black striation 

 in the middle; 3 brownish dots posteriorly and medially to the spot; anterior 



169 



