126 AMERICAN HYMENOPTERA. 



Thyreodon spectabilis (Perty). 

 Ophion spectabilis Perty, Delect. Anim. Artie. Brasil, p. 131, 



pi. 26, fig. 10, 9 (Lat.), Brazil 1833. 



Dalla Torre, Cat. Hym., Ill, p. 199 1901. 



Schulz, Zeits. £. Syst. Hym. Dipt., Ill, p. 2S0..1903. 

 Thyreodoti spectabilis Szepligeti, Gen. Ins., Hym., 34ine Fasc, p. 



25, n. 21 1905. 



Head, thorax a?id four anterior legs flavo-fulvous ; vertex, flagellum 

 of antenncE, posterior legs and abdomen black ; basal two-thirds of 

 wings bright flavous ; apex fuscous ; eyes small. 



Length, 31-38 mm. ; wing, 20-33 mm. ; spread, 43-65 mm. ; antenna, 

 19 mm. 



Head apparently long, owing to the small size of the eyes ; flagellum 

 of antennae black ; scape fulvo-ferruginous ; vertex and tips of mandi- 

 bles black, head otherwise fulvous; ocelli somewhat distant from the 

 tops of the eyes ; eyes small, slightly emarginate, distant from the base 

 of the mandibles. 



Thorax fulvous, tinged with ferruginous, polished, clothed with fine 

 yellowish pubescence, longer and more dense on the mesonotum ; 

 pleurae and pectus polished and shining ; thoracic sutures more or less 

 distinctly crenulated ; scutellum flavous, deeply excavated in front and 

 connected with the mesonotum by two longitudinal carinae ; meta- 

 thorax dull fulvous, with dense short pubescence, flat behind, with a 

 distinct median furrow from which numerous arcuate furrows extend 

 to the insertion of the abdomen, and two short lateral carinae originat- 

 ing near the apex; wings bright fulvous, transparent, the apex with a 

 broad fuscous band ; stigma lacking ; basal half of costa fulvous ; ner- 

 vures otherwise fuscous ; nervulus interstitial ; nervellus broken well 

 above the middle ; first recurrent vein about one-third the length of 

 the second ; outer two-thirds of the discocubital vein nearly parallel 

 with the subdiscoidal vein. 



Four anterior legs fulvous, excepting their tarsi, which are black ; 

 posterior legs black, with the base and apex of the femora ferruginous ; 

 in one specimen these two bands are connected by a narrow longitu- 

 dinal stripe of the same color ; abdomen shining black, strongly com- 

 pressed. 



In describing this species I have compared three specimens 

 with the original description. 



Type. — 9 . Location unknown.* 



This is one of the largest species of Thyreodon, and may 

 be readily recognized by its contrasting colors. It appar- 

 ently varies somewhat in the size of the ocelli. I have before 



* Schulz states that it is not at the Miinich State Museum. 



