1976] 
Porter — Thyreodon from South Texas 
309 
Colorado and Arizona to Mexico and thus may be looked for in 
west Texas. 
No material of ornatipennis Cresson was available for study 
but Hooker’s description (1912, p. 122) shows it to be distinctive 
in its almost uniformly reddish brown ground color, “fuliginous 
wings with a fulvo-hyaline spot extending across the middle and 
sometimes occupying most of the base”, deep notauli, and finely 
reticulate propodeum with an apico-median channel. This species 
is known only from Orizaba, Mexico and from an unspecified 
locality in “New Mexico”. It also may occur in west Texas. 
References 
Hooker, C. W. 
1912. The Ichneumon Flies of America Belonging to the Tribe Ophionini. 
Trans. Amer. Ent. Soc. 38 (1-2): 1-176. 
Muesebeck, C. F. W., Krombein, K. V. & Townes, H. K. 
1951. Hymenoptera of America North of Mexico, Synoptic Catalog. U. S. 
Department of Agriculture Monograph No. 2: 1-1420. 
Townes, H. K. 
1966. A Catalogue and Reclassification of the Neotropic Ichneumonidae. 
Mem. Amer. Ent. Inst. 8: 1-367. 
