PROCEEDINGS OF THE UNITED STATES NATIONAL MUSEUM 



issued l^i[^ U . CPJK^n by the 



SMITHSONIAN INSTITUTION 



U. S. NATIONAL MUSEUM 



Vol. 83 W«.lungton : 1936 No. 2995 



FOUR NEW SPECIES OF CHALCIDOIDEA PARASITIC ON 

 CACTUS INSECTS 



By A. B. Gahan 



Bureau of Entotnology and Plant Quarantine, United States Department of 



Agriculture 



The following apparently new species of parasitic Hymenoptera 

 were all reared by representatives of the Australian Prickly Pear 

 Board in the course of their extensive investigations of cactus insects 

 in Texas and Mexico during the past several years. 



Family CALLIMOMIDAE 

 Genus CALLIMOME Spinola 



CALLIMOME BIFASCIIPENNIS, new species 



Differs from all other known North American members of the 

 genus by having two very distinct brownish fasciae on the f orewing, 

 one adjacent to the venation at the point of union of submarginal 

 and marginal veins, the other and larger one abutting on the apical 

 one-third of marginal vein adjacent to the stigmal vein and extending 

 obliquely distocaudad to the middle of the wing as a moderately 

 broad and nearly uniform transverse stripe. 



Female. — ^Length, excluding ovipositor, 3 mm; ovipositor sheaths 

 4.3 mm. Head strongly transverse, somewhat broader than thorax 

 at tegulae; vertex and frons with fine alveolate sculpture; face with 

 a weak median ridge, weakly reticulated and also covered with 

 broad shallow indentations, which are arranged in more or less 

 64303—36 481 



