NO. 2344. SUPERFAMILY TIPULOIDEA— ALEXANDER AND McATEE. 415' 

 Genus ATARBA Osten Sacken. 



ATARBA PICTICORNIS Osten Sacken. 



Common; season Ma}'^ 16 to August 9; in copula, June 24; is at- 

 tracted to light; the immature stages are unknown. P.I. 



Genus ANTOCHA Osten Sacken. 



* ANTOCHA SAXICOLA Osten Sacken. 



Abundant; dates of collection range from April 20 to September 

 24; in copula, April 23, May 4; is attracted to light; the immature 

 stages are strictly aquatic. P. I. 



Genus DICRANOPTYCHA Osten Sacken. 



KEY TO SPECIES. 



1. Wings with a strong rertdish-brown or fulvous tinge; Rs notably longer than 



cell first Mi. (Regional.) 7). oer^nana Osten Sacken. 



Wings not strongly fulvous ; Rs approximately as long as cell first Ma 2. 



2. Tips of the femora conspicuously blackened ; abdominal tergites uniformly 



light brown or yellow 3. 



Tips of the femora not blackened ; abdominal tergites banded or at least 

 the seventh segment blackish 4. 



3. Size large (male, length, about 10 mm.); wings brownish yellow; male 



hypopygium with the gonapophyses prominent, acicular. (Regional.) 



D. nigripes Osten Sacken. 

 Size small (male, length, under 8 mm.); wings brown; male hypopygium 



with the gonapophyses small, not projecting. (Regional.) 



D. minima Alexander. 



4. Coloration yellow, the wings deep yellow D. winnemana (p. 415). 



Coloration brown or gray; wings pale brownish or grayish 5. 



5. Abdominal tergites uniformly dark brown or only the seventh segment 



darker; male hypopygium with the gonapophyses not acicular nor pro- 

 jecting D. sohrina (p. 415). 



Abdominal tergites banded, the apical third of each segment pale ; male 



hypopygium with the gonapophyses acicular, prominent. (Regional.) 



D. tigrlna Alexander. 



The immature stages are spent in ratlier dry soil beneath leaf mold. 



♦DICRANOPTYCHA SOBRINA Osten Sacken. 



Abundant ; season April 20 to September 5 : in copula. May 28y 

 August 22; comes to light. P. I. 



* DICRANOPTYCHA WINNEMANA Alexander. 



Plate 23, fig. 4. 



Plummers Island, July 21, 1915: Virginia, near Phimmers Island. 

 August 22, 1916, McAtee. 



