REVISION OF GENUS EUCERCERIS CRESSON 37 



Distribution. — Northern Coahuila, Mex., Maverick County, 

 Tex. and Cochise County, Aiiz. 

 Prey records. — None. 

 Plant records. — Baccharis glutinosa (Arizona). 



17. Eucerceris lapazensis, new species 



Figures 21, 74 a, b, c 



Female. — ^Length 15 mm. Ferruginous with yellow markings 

 and some depressed areas darker; punctation small and mostly 

 crowded; pubescence very short. 



Head slightly wider than the thorax, ferruginous becoming more 

 fidvous over the lower face, a narrow wedge of fuscous borders the 

 eye near the vertex, a depressed fuscous area extends through the 

 antennal scrobes and along the sutiu-es of the lower face; clypeal 

 border with two pronounced concavities on the medial lobe, laterad 



■Hi 

 Figure 21. Baja California. E. lapazensis, new species p 



of each cavity there is a low denticle with a broad base, at the meson 

 between the two dej^ressions there is a cluster of bristles, below 

 these bristles there is a pair of denticles connected with each other by 

 a carina, another similar carina connects the medial denticles with 

 each lateral denticle; mandibles with a single acute denticle; antennae 

 normal in form, basal segments ferruginous, apical segments darker. 

 Thorax dark ferruginous except for the posterior border of the 

 pronotum, its posterior lobe, the metanotum and an area on the 

 propodeum, all of which are more yellow; tegulae low and smooth; 

 enclosure with a deep medial groove and ridged subparaUel to the 

 base; mesosternal tubercles small; legs ferruginous; wings subhyahne 

 but clouded in the anterior area, second submarginal cell petiolate. 



