126 MAINE AGRICULTURAL EXPERIMENT STATION. IQIO. 



stages of the members of this subfamily. He states that the 

 larvae of Sciophila are easily distinguished from those of Myce- 

 tophila by their more elongate form and their mode of life, as 

 they do not burrow inside of the fungi, but live on the surface, 

 generally on the under side of the pileus, which they cover with 

 a web. Some of them are found on decaying wood, especially 

 when it is covered with byssus: The head of the larva is more 

 elongate than in the Mycetophilincs ; the antennae are rudimen- 

 tary; mandibles uniformly thin, slightly concave, with several 

 large indentions and some minute ones in their intervals and 

 on the surface ; maxillae well developed and apparently with a 

 vestigial palpus. The body is 12-segmented, subcylindrical, 

 elongated, almost serpentine, yellowish in color with 8 trans- 

 verse rows of exceedingly minute ambulacral setulae on the 

 ventral side of abdomen. The stigmatae are small, 8 pairs, one 

 on the first thoracic and seven on the first 7 abdominal seg- 

 ments, the last two having none. 



Winnertz records rearing Neoempheria, Empalia and My- 

 coiiiya from decaying Beech wood, the last also from the fungi 

 Daedalea qucrcina, and Poly poms ; Sciophilce (Lasiosoina) were 

 obtained from the fungi Hydnum rcpandum. Boletus scaber, 

 and Daedalea quercina. 



Table of Genera. 

 a. Cubitus not forked (fig. 84) ; forceps slender (fig. 107). 



I. Monoclona. 

 aa. Cubitus forked. 



b. Two ocelli, one near each eye margin ; petiole of cubitus 

 very short (fig. 83). 2. Eudicrana. 



bb. When only two ocelli are present these closely approxi- 

 mated and widely remote from eye margin ; frequently 

 with three ocelli. 

 c. The R-M crossvein long and oblique, appearing like the 

 beginning of a longitudinal vein and much longer than 

 the small transverse basal section of the radial sector 

 (fig. 85). 3. letragoneura. 



cc. The crossvein shorter or not much longer than the base 

 of the radial sector, 

 d. The media forks slightly distad of the crossvein but 

 proximad of the fork of the cubitus (fig. 86). (Lasi- 

 osoiiia Winn). 4 Sciophila. 



