ICHNEUMON-FLIES, PART 2 1 EPHIALTINAE 



185 



3. Troniatobia zonata (Davis) 



Figures 322,d; 366 



Clistopyga zonata Davis, 1895, Ent. News, vol. 6, p. 198; ?. Type: ?, Illinois 



(Philadelphia). 

 Biology: Hubbell, 1932, Ann. Ent. Soc. America, vol. 35, p. 504. 



Front wing of male about 4.5 mm. long, of female 4.7 to 6.2 mm. 

 long; areolet absent; upper and lateral faces of propodeum with sharp 

 punctures that are separated by about 0.8 their diameter; ovipositor 

 sheath about 0.36 as long as front wing. This species is a little 

 stouter in build than others of its species group. 



Black. Face except for a dorsomedian area in some females, orbits 

 of frons and occiput, cheek, clypeus, basal half of mandible, palpi, 

 usually scape beneath, upper margin of pronotum, tegula, subtegular 

 ridge, postscutellum, apex of scutellum, small lateral apical spot on 

 propodeum, trochanters, front and middle tibiae, front tarsus, usually 

 narrow subapical band on first tergite, and always narrow subapical 

 band on second to fifth tergites, white; usually mesopleurum except 

 above, metapleurum, mesosternum, metasternum, and sometimes 

 most of mesoscutum fulvous, the rest of thorax fulvous to black, 

 usually black; front and middle coxae white, tinged with fulvous 

 basally; front and middle femora fulvous, their apex white; middle 

 tarsus white, the apical half of fifth segment and narrow apex of first 

 to fourth segments light brown to fuscous; hind coxa fulvous; hind 

 femur fulvous with its apex white and a subapical infuscate band; 

 hind tibia white with sharp apical and subbasal fuscous bands; hind 

 tarsus white, the apical half of fifth segment and narrow apex of first 

 to fourth segments fuscous ; black ground color of abdomen sometimes 

 more or less replaced by ferruginous. 



Figures 74-76. — Localities: 74 (left), Tromatobia ovivora rufopectus; 75 (center), 

 T. zonata; 76 (right), T. notator. 

 526527—60 13 



