1922] Ball and Hartzell: Review of Orgerini 151 



Timonidia no v. gen. 



Resembling Ticidia, but smaller with a larger and more 

 sharply angled vertex and still wider front. 



Cephalic process almost wanting. The apex of the vertex slightly 

 exceeding the eyes. Vertex triangular clear to the base, median carina 

 weak. Front broader than in Timodema, frontal tablet broad, scarcely 

 elevated, parallel margined to just before the apex where the lateral 

 cariuce round in and unite with the vertex. Clypeus broader than in 

 Timodema. No callosity between the eye and pronotum. Pronotum 

 short, without raised tablet, pustulate throughout. Central tablet of 

 scutellum broadening posteriorly without pustules. Elytra brachyp- 

 terous, irregularly reticulate. Abdomen oval, abruptly terminating 

 posteriorly, almost truncate. Abdominal segments pustulate as in 

 Ticidia. Fore and middle tibia and femora linear, not foliaceous or 

 expanded. Hind tibia with 2-4 weak spines. Rostrum equalling the 

 abdomen. 



Type of the genus Timonidia solitaria sp. nov. 



Timonidia solitaria sp. nov. 

 (Plate XII, Figs. 5, 13.) 



A small, globose, creamy yellow species. Length, female, 

 3.5 mm. ; male, 3 mm. 



Structure of the genus, vertex short, about equal to the eyes. 

 Roughly equilaterally triangular with the apex extending to the apex 

 of the head where it joins the lateral carina of the front. Front broader 

 than the width of the eye. Pale creamy yellow with a tawny tinge, eyes 

 light brown. 



Described from three examples from Mojava, California, 

 taken July 30, on Eriogonum fascicidatum along with Acinaca 

 lurida. This species superficially resembles Orgerius rhy panes 

 var. ventosus but is quite distinct structurally. It is not well 

 adapted to this plant in color and it is possible that this 

 occurrence was accidental. 



