19l!2] Matausch — Micoutalis Calva Say 67 



condition the insect died the next day. Whether these insects 

 have this bright color, after each molt, as does Euchenopa bino- 

 tata (which are at first alwaj's of yellow and red), I cannot state, 

 bnt they probably do. 



On September 15 a frost set in and on the 17th only very scat- 

 tered blossoms were found and the plants began to dry. At this 

 time only one nymph was collected which matured on September 

 22 into a splendid female. After that time none were found until 

 October 8, when only a few smaller plants were partly green; then 

 I discovered one nymph of which I made a water-color picture 



Fig. 1. Nymph and egg of Micoutalis calva Say. 



on the 12th of October. By supplying a fresh plant I found it 

 fully developed on October 14. 



After that I could not find any food plant in nursing condition 

 so I tried Trifolium pratense and T. hybridum. The insect was 

 kept on those plants till December 3 when I found it dead, fastened 

 to the stem with its sucking bristles. The figure shows the nymph 

 in the stage before maturity; they are nearly equal to the adult 

 in size and vary somewhat according to the sex; averaging 3.5 

 mm. in length. In color some are dull green, others yellowish- 

 brown, or red-brown; but the majority are purple, the exact color 

 of the stems toward the upper parts of the plants. Before trans- 



