BALCLUTHA — BLOCKER 



45 



apodeme prominent, curved posteriorly, shaft broad in lateral view, 

 apex forming two lobes which overlap diagonally. 



Color stramineous to Hght brown; face with faint trace of oblique 

 brown lines on each side of midhne; thoracic venter dark; forewings 

 hyahne with yellowish brown tint. 



Holotype and paratype males from Fortin, V. C. [E. Mexico], 

 Oct. 9, 1941 (DeLong, Good, Caldwell, and Plummer). This species 

 was described from these two specimens. Holotype in the DeLong 

 collection. 



B. chiasma, new species, appears to be related to B. lineata (Osborn) 

 but can be readily distinguished by the shorter shaft and the over- 

 lapping lobes at the apex of the aedeagus in chiasma. 



Balclutha flavescens (Baker) 



Figure 29 



Eugnathoclus flavescens Baker, 1903, Invert. Pacifica, vol. 1, p. 2. 



Eugnathodus virescens Osborn, 1926, Ann. Ent. Soc. America, vol. 19, p. 351. 



[New synonymy.] 

 Eugnathoclus ahbreviata DeLong and Davidson, 1933a, Ohio Journ. Sci., vol. 



33, p. 57. 



Figure 29. — B. fiavesciens: a, aedeagus, lateral view; b, style and connective, dorsal view; 

 c, valve and plate, ventral view; d, male pygofer, lateral view; e, female abdominal sternum 

 VII, ventral view. 



Length of male 2.5 to 2.8 mm, of female 2.8 to 3.2 mm; head width 

 of male .700 to .750 mm, of female .725 to .850 mm; pronotal width 

 of male .675 to .725 mm, of female .700 to .800 mm. 



