^°- ^"5^^ SOLDIER FLY LARVAE — McFADDEN 35 



Stratiomys normula Loew: Louisiana: Baton Rouge (?), 2 puparia 

 LSU. 



Genus Myxosargus Brauer, 1882 



Four species of Myxosargus occur in North America but only the 

 puparium of Myxosargus nigricomis Green is known. 

 Generic characters.— As given in key to genera. 



Myxosargus nigricomis Green, 1918 



Figures 88, 92, 93 



Description.— Puparium: length 6.7-7.0 mm (less head and pro- 

 thorax), mean 6.85 mm; width 2.0-2.1 mm, mean 2.05 mm. 



Biology. — No data are available for this species. 



Material examined.— Missouri: 5 miles north of Vichy, June 15, 

 1955, P. J. Spangler, 2 puparia, WSU. 



Genus Euparyphus Gerstaecker, 1857 



James (pers. comm.) divided this genus into 2 subgenera as follows: 

 Euparyphus (11 species) and Aochletus (3 species). Of the 11 species 

 listed for Euparyphus, only the larvae of E. limhrocutris Adams have 

 been collected. Aochletus has been elevated to full generic status. 



Generic characters.— As given m key to genera. 



Euparyphus limhrocutris Adams, 1903 



Figures 94, 95, 99 



Description.— Mature larva: length 10.6-11.2 mm, mean 10.9 mm; 

 width 2.3-2.5 mm, mean 2.4 mm; prothoracic spiracles located on a 

 medial-lateral projection and extending at least halfway to the 

 dorsomedian line of that segment. 



Penultunate instar: length 9.2-10.6 mm, mean 9.9 mm; width 

 2.0-2.1 mm, mean 2.05 mm; differs from mature larva since pro- 

 thoracic sphacles are elevated as high as their basal diameter. 



Biology.— No data are available for this species. 



Material examined.— Washmgton: O'SuUivan Dam, Grant 

 Coimty, May 7, 1955, J. A. Quist, 2 matm-e and 2 penultimate instar 

 larvae, WSU. 



Genus Aochletus Osten Sacken, 1886 



On the basis of adult characters, James (pers. comm.) considered 

 Aochletus to be a subgenus of Euparyphus; however, the difference or 

 degree of difference between the larvae of Aochletus and Euparyphus 

 is so great that I feel full generic status should be given to Aochletus. 



