,225) 



Number and arrangement of gills of L. s p a r s u ; 



(225) 



Segment 



Dorsal 



Pleural 



Ventral 



2 



3 

 3 



3 



3-2 



3 

 3 



3 



3 

 3 



3-2 



2-1 



3 

 3-2 



4 



3 

 2 



2 



1(0) 





3-2 



2 



5 



2 

 2-1 







2 

 2 



6 



2-1 



1 







2 

 2 



7 



1 

 1(0) 







2-1 



1 



Number and arra 



ngement of 



^ills of pupa of L. sp ar s us 



Segment 



Dorsal 



Pleural 



Ventral 



2 



3 

 3 



2(0) 



2 



3-2 

 3 



3 



3-2 

 3 



2-1 



2-1 



3-2 

 3 



4 



2 

 2 



2-1 





2 

 3-2 



5 



2 

 2-1 







2 



2 



6 



2(0) , 

 2-1 







2-1 

 2 



7 









1 

 2-1 



20. Limnophilus auricula Curtis 



Pictet, 1834:158, Plate X, Figure 5.- Kolenati, 1848:66.- Hagen, 

 1864:252.- Meyer -Dur, 1875:387.- McLachlan, 1875:85.- Struck, 

 1903:93-94, Plate I, Figure 14; Plate IV, Figure 10, Plate VI, Figure 17.- 

 Ulmer, 1903:53. - Siltala, 1903a:21-23. - Ulmer, 1909:265. - Lestage, 

 1921:739-740, 746. 



Full-grown larva. Length 11 — 12 mm. Head (Figure 398) short, rounded 

 in dorsal view; dorsal surface, including frontoclypeus, uniformly dark 

 reddish brown, usually with a small light spot in angle of frontoclypeus; 

 wedge-shaped pattern on frontoclypeus invisible in whole specimens; 



283 



