64 U.S. NATIONAL MUSEUM BULLETIN 2 68 



scrobes; mandibles with an upper acute and a lower blunt denticle 

 on the mesal surface, denticles connected by a curved ridge; antennae 

 normal in form. 



Thorax black, inomaculate; tegulae punctate over their anterior 

 half, otherwise smooth; scutellum, metanotum and the entire pro- 

 podeum including the enclosure closely and finely punctate; meso- 

 sternal tubercles absent; legs black dorsally, yellow ventrally; wings 

 subhyaline but darker along the anterior half; 2nd submarginal 

 cell petiolate. 



Abdomen black except for: band on the apical half of tergum 3 

 (some specimens have an evanescent narrow band on the basal half), 

 two parallel bands on terga 4, 5, 6, and most of 7, all of which are 

 yellow; pygidium slightly longer than broad, yellow infused with 

 black; sterna 3, 4, 5, and 6 with variable amounts of yellow laterally; 



[Figure 39. Mexican Gulf Coast. E. stangei, new species 



iI^.kA^ 



ventral abdominal bristles forming distinct medially divided rows 

 on sterna 3, 4, and 5, indistinct row on sternum 6; masses of promi- 

 nent long setae covering much of sterna 3 and 4. 



Types. — The type 9 and allotype cf' are from Mitla, Oaxaca, 

 Mexico, 5,600 ft. elev., Aug, 20, 1963, on Baccharis glutinosa (H. A. 

 Scullen and Duis Bolinger). Deposited at the U.S. National Museum, 

 no. 69231. 



Pahatypes. — MEXICO: 59 9, 4crcf, Mitla, Oaxaca, Mexico, June 28, 

 Aug. 20, 22, 1963, on Baccharis glutinosa (Scullen and Bolinger); 2<^d', same 

 locality, Sept. 2, 1957 (H. A. Scullen); 9 , 4. mi. NW. Tepanco de Lopez, Puebla, 

 Mexico, July 2, 1953, on Agave (U. of Kansas Mex. Exped.); d', Cacaloapan, 

 Puebla, Mexico, Aug. 20, 1963 (F. D. Parker and L. A. Stange). 



Distribution. — States of Oaxaca and Puebla, Mexico. 



Prey record. — None. 



Plant record. — Agave (Puebla). Baccharis glutinosa (Oaxaca). 



