846 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXXII. 



STIPATOR NIGROMARGINATA Caudell. 



Orclieslicih^nigrornMrgtnata CAVTiKhh, Trans. Amer. Ent. Soc, XXVIII, 1902, p. 89. 

 Slipator vi(/rnmar(jii)atu!^ Kirhy, Syn. Cat. Orth., II, 1906, p. 18o. 



Description. — Vertex moderately broad, about one-half as l)road as 

 tlio interocular space; eyes rounded, anteriorly truncate, scarcely 

 ])rominent. Pronotuni well produced prosteriorly ; lateral lobes longer 

 than deep, the posterior margin sinuate; disk very slightl}^ flattened; 

 lateral carina? very slightly indicated but more noticeably located b}- 

 the abrupt change in color from the usually light colored dorsum to 

 the infuscated upper portion of the lateral lobes; median carina not 

 indicated. Legs, wings, abdomen, cerci, and ovipositor as in grandlsY^x . 

 i7isign is. Color varying shades of brown with th e upper part of the late- 

 ral lobes of the pronotuni and sides of the abdomen nearly always black, 

 conspicuously contrasted with the top of the pronotuni and abdomen 

 which are much lighter in color. This lateral infuscation of the pro- 

 notuni and al)donien extends also onto the head, eml)racingthe e^^es and 





Fig. 44. — STIPATOR NKiROMARGINATUS. ADULT FE.MALE. 



sides of the fastigiuni. The antennae are uniforml}' brown or, rare!}", 

 light banded. The lateral infuscation of the sides is sometimes more 

 or less broken and the disk of the pronotuni is sometimes, but rarely, 

 dark, not so distinctly contrasted with the sides. 



Measurements. — Length, pronotum, male, 7.5-S.5 mm., female, 8-10; 

 posterior femora, male, 22.5-23, female, 26-29; ovipositor, 10-21.5; 

 width, posterior femora at the base, male, 8,75, female, 4.5. 



Type.—Q,2± No. 6119, U. S. National Museum. 



Specimens examined. — The type, a single female, from Texas (Bel- 

 frage), and a female (lig. 44) from Perkins, Oklahoma, August 13, and 

 material from Kansas and Texas. 



In June and August, 1904, Prof. F. B. Isel}^, of Wichita, Kansas, 

 sent me some n3aiiphs from Clearwater, Kansas, and Barber took 

 nymphs at Brownsville, Texas, in Ma3^ In the Scudder collection are 

 two males and one female from Lakin, Kansas, 3,000 feet, September 

 1, and one female from Texas and one from Georgia. 



