162 PROCEEDINGS OF THE NATIONAL MUSEUM vol.87 



Mountain National Park); Arizona (Flagstaff, Cloudcrof t) ; New 

 Mexico (Magdalena Mountains). 



MONOXIA INORNATA, new species 



Plate 18, Figure 9 



Large (about 4.5 mm.), broadly oblong-oval, pale yellow-brown, 

 frequently without elytral markings or with only pale reddish-brown 

 traces of subsutural vitta and darkened humeri, under surface usually 

 more or less dark; pro thorax not twice as broad as long, with posterior 

 angles not pronounced and sides not greatly narrowed anteriorly; 

 elytra without depressions, densely punctate and pubescent. Head 

 with pale lower front, gradually deepening in color over occiput; 

 mouth parts frequently pale or only in part brown, median line dark; 

 the dense occipital punctation partially concealed by pubescence. 

 Antennae pale with outer joints darker. Prothorax more rectangular 

 in shape than in debilis, but not twice as broad as long, and with the 

 sides not very arcuate and not much narrowed anteriorly; disk more 

 depressed in middle and on sides than in debilis, the basal angles 

 tending to be less obtuse than in debilis, and with blunter basal tooth; 

 punctation dense and shallow, somewhat obscured by pubescence; 

 usually without markings, sometimes with an M -shaped darkening. 

 Elytra with intrahumeral sulcus not marked; punctation dense, 

 tending to be confluent, shallow and coarse, and not entirely con- 

 cealed by the long but not dense pubescence ; color frequently entirely 

 pale or with pale reddish-brown traces of subsutural vitta and dark- 

 ened humeral spot, occasionally the latter extending down the sides. 

 Undersurface more or less darkened, usually metastemum and first 

 abdominal segments dark, but occasionally whole undersurface except 

 last abdominal segment dark. Legs pale. Length, 3.5 to 4.6 mm.; 

 width, 1.5 to 2 mm. 



Type, male, and 6 paratypes (3 males, 3 females), U. S. N. M. 

 No. 44019, collected by F. H. Snow; 60 paratypes in collection of 

 University of Kansas. 



Type locality. — Gove County, Kansas. 



Distribution. — Kansas (western Kansas, Gove Coimty); Texas; 

 Nebraska (Lincoln); North Dakota (Williston) ; Montana (Glendive); 

 Alberta (Medicine Hat); Wyoming (Sheridan); Colorado (Fort 

 Collins, Salida, Joliet, Paonia, Denver) ; New Mexico. 



Food plants.— Gumweed, Grindelia sp. (H. H. Brisley, F. S. Carr), 

 Grindelia squarrosa (Colorado Agricultural College). 



Remarks. — M. inornata has been collected repeatedly on species 

 of Grindelia. It is one of the larger species of Monoxia and is usually 

 pale yellow-bro^^^l with few elytral markings. It differs from M. 

 angularis in lacking the prominent basal angles of the prothorax 



