ICHNEUMON-FLIES — GELINAE : MESOSTENINI 93 



This species is transcontinental in the United States and southern 

 Canada. It is much more common in the East than in the West. 

 Antheraea polyphemus is the normal host. 



4. Genus Mallochia 



Figure 310,a 



Mallochia Viereck, 1912, Proc. U.S. Nat. Mus., vol. 43, p. 591. Type: Mal- 

 lochia agenioides Viereck; original designation. 



Front wing 3.5 to 7.3 mm. long; body rather elongate, subcylindric; 

 frons unarmed; clypeus of moderate size, rather strongly convex, its 

 apex broadly truncate and with a small median tooth; epomia 

 absent or very short and weak; mesoscutum moderately long, strongly 

 convex, polished, subpolished, or more or less mat, with moderate- 

 sized punctures; notaulus moderately sharp, extending about to 

 center of mesoscutum; prepectal carina ending at or above middle 

 of hind margin of pronotum; propodeum elongate, in profile evenly 

 convex, its basal carina complete and apical carina absent; propodeal 

 spiracle circular; areolet small, pentagonal in general shape but 

 open on the outer side; ramellus absent; second discoidal cell strongly 

 narrowed basally; nervulus a little basad of basal vein; mediella 

 strongly arched; nervellus broken near its lower 0.3; axillus close to 

 anal margin ; first abdominal segment short, stout, gradually widened 

 to apex, its spiracle only a little beyond the middle, without a sub- 

 basal lateral tooth and without median dorsal carina, its dorsolateral 

 carina absent or obsolescent, its ventrolateral carina present and 

 complete; second tergite subpolished or mat, with dense, moderate- 

 sized punctures; tergite 7 sometimes with a white spot; ovipositor 

 sheath 0.37 to 0.50 as long as front wing; ovipositor compressed. 



Mallochia contains four species in southern United States, one 

 of them ranging northward to the southern edge of Ontario. The 

 rest of the genus is Neo tropic. The species are found in low grassy 

 or weedy vegetation, more or less in sunlight. They are seldom 

 collected, but are probably common. None have been reared. 



Keys to the Nearctic species of Mallochia 



MALES 



1. Thorax largely black 2 



Thorax entirely fulvous 3 



2. Lateral lobe of mesoscutum closely punctate all over; upper margin of pronotum 



yellow; second and third tergites entirely fulvous . 1. agenioides Viereck 

 Lateral lobe of mesoscutum closely punctate on its front half, its hind half 

 almost impunctate; upper margin of pronotum black; second and third 

 tergites fuscous with their apical parts fulvous or yellowish 



3. frontalis, new species 



