Pomona College Journaiv op Entomology 



789 



verse thirk bauds on tlic dorsum, vvhieli nearly incet in the inidiUe. Abdomen 

 — Deeply segmented, each segment with lateral tubeicle on both sides (Figure 

 250, 7) around which is a dark spot, and two or nu)re irregular dark patches 

 which form two dark longitudinal rows — one on each side of the ligiit dorsal 

 band (see drawing). Corwcies— (Figure 249, D). A little stouter than in 

 the winged I'oi-iii, but of the same geiici-al shnne, yellow to orange in color 



Figure 250. Melanoxantherium rufulus (Davidson) 



1-2, antenna of the winged female, tarsi of winged female; 3, tarsi of winged female: 

 4 and S, prothoracic and lateral abdominal tubercles of winged female; 6 and 7. 

 same of apterous female; 8 and 9, antenna of apterous female. 



with the tip dusky in some iustances, l)ut not in all, length 0.3b mm. Lefjs — 

 As in the winged form and colored as follows : coxae very light yellow, femora 

 with base yellow and apical two-thirds dark amber, til)i:\! dusky brown with 

 tips very dark brown, tarsi dark brown. .S7.iy/f — Large, nearly as wide as the 

 anal plate, well rounded, nearly as long as wide, hairy, dusky. 



Young — Amber brown to yellow, or even transparently white, without 

 the powdery covering and dark dorsal markings. 



