NO. 2344. SUPERFAMILY TIPULOIDEA— ALEXANDER AND McATEE. 429 

 Genus ERIOCERA Macquart. 



KEY TO SPECIES. 



1. Coloration of the body yellow or yellowish red; antennae of the male elon- 



gated, the basal flagellar segments not armed with spines 



E. ivilsonu (p. 429). 



Coloration of the body brown, gray or almost black; antennae of the male 



short, if elongated, the segments at the base of the flagellum armed with 



small spines 2. 



2. Thoracic dorsum gray ; male antennae elongated 3. 



Thoracic dorsum brown or black ; antennae short in both sexes 4. 



3- Cell first M2 short, pentagonal, usually with a small spur into cell R ; valves 



of the ovipositor short, blunt, subfleshy E. longicornis (p. 429). 



Cell first M2 long, hexagonal ; valves of the ovipositor elongated, pointed, 



chitinized E. cinerea (p. 429). 



4. Wings brown, the stigma small, rounded, brown ; abdominal tergites brown 



E. fuliginosa (p. 429). 



Wings blackish brown, the stigma oval, dai'k brown ; abdominal tergites 



black E. tristis (p. 429). 



The early larval stages of the more common species of Eriocera 

 are aquatic. When nearly full grown they are to be found in the 

 sandy soil along the margins of rather large streams. 



ERIOCERA CINEREA Alexander. 



Pimmit Run, Virginia, September 6, 1908 ; Forest Glen, Maryland, 

 June 1, 1913; Hyattsville, Maryland, August 2, 1913, F. Knab. 



* ERIOCERA FULIGINOSA Osten Sacken. 



Plummers Island, June 23, 1907, McAtee; Washington, District 

 of Columbia, July 20, E. A. Schwarz. 



ERIOCERA LONGICORNIS Walker. 



Common; records all from Piedmont region, date from April 4 

 to July 30 ; this species is attracted to light. P. I. 



ERIOCERA TRISTIS Alexander. 



Frequent; has been collected in Piedmont localities from July 7 

 to September 1. P. I. 



ERIOCERA WILSONII Osten Sacken. 



Mount Vernon, Virginia, April 19, 1903. 



Tribe PEDICIINI. 



KEY TO GENERA. 



1. Antennae with 16 segments 2. 



Antennae with 13 or 15 segments 3. 



2. Cord oblique; cell first M2 very short, pentagonal; size large, wing over 20 



mm.; palpi elongated Pedicia (p. 430). 



Cord ti-ansverse; cell first Mi elongate; size smaller, wing under 18 mm.; 

 palpi short Tricyphona (p. 430). 



3. Cross vein r present so three Ri cells are present Dicranota (p. 431). 



Cross vein r lacking, two Ri cells being present RhaphidolaUs (p. 431). 



