THE CRANE-FLIES OF NEW YORK PART II 915 



49) was found under leaves in damp earth in woods. Pupae taken on 

 June 8, 1874, emerged as adults on the 13th. The species was found 

 also in the sandy mud of a small brook bed. E. (E.) flavescens (Beling, 

 1879:50) was found in sandy, damp earth, E. (E.) sordida (Beling, 1879: 

 56, mention only) in wet, sandy earth along brooks, and E. (E.) lutea 

 (Beling, 1886:192-193) in woods, in damp hollows, and along the margins 

 of brooks, usually under leaf mold. Edwards (1919 a) has recorded a 

 species of Erioptera as being associated with the larvae of the mosquito 

 Taeniorhynchus at the roots of water grass (Glyceria fluitans) in 

 England. 



In America, E. chlorophylla, E. vespertina, E. caloptera, and other 

 species inhabit wet mud in open swamps; E. septemtrionis and E. megoph- 

 thalma, rich organic mud in cool, shady woods; E. armata, E. near 

 knabi, and other species, the soil along the sandy banks of streams. E. 

 (Acyphona) graphica was considered by Hart (1898 [1895]: 197) to be 

 semiaquatic. 



The writer has before him the larvae of only two species of the genus, 

 E. chlorophylla and E. megophthalma. These are readily separated by 

 their color, E. chlorophylla being pale green, E. megophthalma pale 

 yellow and more elongate. The pupae of the Nearctic species of the 

 genus may be separated by the following key: 



1. Breathing horns and cephalic crest strongly pointed and curved forward at their tips; 



coloration light green E. chlorophylla O. S. (p. 918) 



Breathing horns and cephalic crest not as above; coloration not green 2 



2. Breathing horns elongate-cylindrical to slightly flattened, almost straight but slightly 



divergent, diameter subequal for entire length 3 



Breathing horns not as above, more or less curved, or else blunt at their tips 4 



3. Cephalic crest sharply pointed; eyes large E. megophthalma Alex. (p. 915) 



Cephalic crest not sharply pointed; eyes small E. septemtrionis 0. S. (p. 920) 



4. Breathing horns almost straight, enlarged distally, tips blunt. 



E. sp. (near knabi Alex.) (p. 922) 

 Breathing horns curved, narrowed toward tips 5 



5. Breathing horns widely separated at base, bent strongly proximad, contiguous medially; 



lobes of cephalic crest acute, vertical; eyes large. . , E. vespertina O. S. (p. 919) 



Breathing horns curved gently forward; cephalic crest with lobes directed laterad, diver- 

 gent; eyes of moderate size E. armata O. S. (p. 921) 



Erioptera megophthalma Alex. 



1918 Erioptera megophthalma Alex. Can. Ent., vol. 50, p. 60-61. 

 The adult flies of Erioptera megophthalma are not uncommon in 

 cool, shaded, and boggy woods during the months of early spring. 



