episternum situated at margin; setae of epimeron dark, longer on 

 mesothorax than on metathorax. 



;472) 



Number and arrangement of gills of M. longicornis 



Segment 



Dorsal 



Ventral 



2 



1 

 1(0) 



1 



1 



3 



1 

 1(0) 



1 

 1 



4 



1 



1 

 1 



5 



1 



1 



1 



6 



1 



1 



1(0) 



7 



1(0) 



1(0) 



8 



1(0) 



1(0) 



Legs as in M . a z u r e a in form and chaetotaxy; pattern dark, distinct, 

 consisting of stripes and spots. Fore coxa with a dark reddish brown spot 

 ventrally near base and on posterior surface; articulation between fore 

 coxa and trochanter with blackish brown spots; articulation between femur 

 and tibia with pinkish light brown stripes; femur with a blackish basodorsal 

 spot; distodorsal spot of tibia indistinct, pinkish, or absent. Basal spots 

 of mid- and hind coxae darker, larger, with indistinct dots, with a large dot 

 or several small dots dorsally; articulations between coxa and trochanter, 

 and between femur and tibia, with wide, blackish brown stripes on mid- and 

 hind legs; basal spot of femur and apical spot of tibia large, dark (Figure 

 760). 



Abdominal segment 1 much shorter than metathorax and abdominal 

 segment 2 (Figure 759); dorsal process large, medioanal setae short, dark; 

 lateral processes distinct, not compressed; area with spines brown, situated 

 on ventral side of process; sclerite short, reddish brown, without curved 

 |475 distal branch across the plate as inAthripsodes; seta short, reddish 

 brown, situated near margin of sclerite. 



Tergite of segment 9 whitish posteriorly and laterally; dark part larger 

 than in M. azurea, brown, with indistinct, reddish brown dots; medioanal 

 seta and lateral seta long, blackish brown, thin at end; anterior- angle seta 

 slightly shorter and thinner; anterior-margin and intermediate seta short, 

 thin, former smaller than latter (Figure 761). 



Sclerite "b" of anal legs whitish, with a brown, median dorsal stripe with 

 fused reddish dots; 2 large, smoke brown dots, and 3 small, fused dots 

 further laterally near base; a large, light brown spot near ventral margin. 

 Sclerite "c" smoke brown, with a short, strong, reddish brown seta. Claw 

 reddish, with darker apex and 2 large, dorsal denticles. 



592 



