ICHNEUMON-FLIES OF GENUS CARDIOCHILES — MAO 239 



CARDIOCHILES EXPLORATOR (Say) 



Bracon (Toxoneuron) explorator Say, Boston Journ. Nat. Hist., vol. 1, pt. 3, 

 p. 259, 1836 (female, male) ; in LeConte, Complete writings of Thomas Say on 

 the entomology of North America, vol. 2, p. 710, 1859. 



Toxoneuron explorator Ckesson, Can. Ent., vol. 5, p. 67, 1873. 



Toxoneura explorator Ashmead, Proc. Ent. Soc. Washington, vol. 3, pp. 49, 50, 

 1894. 



Cardiochiles explorator Vikbeck, Trans. Kans. Acad. Sci., vol. 19, p. 288, 1905. 



Female. — Length about 4.0 mm. Black; middle part of mandible 

 brownish yellow ; wings light to dark fuliginous ; femora ferruginous, 

 fore and middle femora black basally ; tibiae and spurs ferruginous, 

 middle and hind tibiae dark apically; fore and middle tarsi dusky, 

 hind tarsus black; ovipositor sheath black. Antenna 30-segmented; 

 first flagellar segment longer than second, the second and third about 

 equal; eye hairy; ocelli elevated; vertex smooth, polished; frons 

 smooth, polished, face about twice as wide as long, smooth, polished ; 

 clypeus polished, its apical margin distinctly notched; temple slightly 

 wider than eye in dorsal view ; galea short. Lateral face of pronotum 

 smooth and shining ; mesoscutum smooth and shining ; notaulices nar- 

 row, very finely foveolate, meeting in an acute angle and extending 

 nearly to the transverse fossa; mesopleuron smooth and polished, 

 upper groove broad and finely foveolate, lower groove usually smooth, 

 posterior groove rather coarsely foveolate, metapleuron rugose on 

 posterior section, smooth and shining on triangular anterior section; 

 propodeum rugose, the carinae rather prominent and the areas usually 

 well defined, spiracle ovate. First abscissae of radius and basal vein 

 subequal ; third abscissa of cubitus about half as long as fourth ; recur- 

 rent vein slightly longer than second abscissa of cubitus; nervulus 

 postf ureal by a little more than half its length ; first abscissa of sub- 

 medius slightly shorter than second ; interanal vein represented as a 

 pigmented line. Apex of hind tibia not thickened into a flaring 

 process; inner spur of middle tibia about 0.80 as long as basitarsus, 

 second and fifth tarsal segments about equal ; imier spur of hind tibia 

 about 0.67 as long as basitarsus, basitarsus slightly shorter than the 

 next three tarsal segments combined, second tarsal segment longer than 

 fifth, third and fifth segments about equal ; hind claws pectinate. Sec- 

 ond tergite shorter than third; hypopygium not surpassing last 

 tergite ; ovipositor sheath about as long as first three tergites combined, 

 narrow basally, broadened apically, its tip slightly bent downward 

 (pi. 5, fig. 15). 



Male. — Essentially similar to the female. 



Type. — Lost. 



The material studied includes specimens from Indiana, Illinois, 

 Kansas, Missouri, Colorado, Ohio, Texas, New Mexico, and Arizona. 

 One specimen is labeled as having been reared from the garden web- 



