VIII 



PSITHYRUS DISTINCTUS 



21 I 



and the yellow on the 3rd segment is paler, soon fading 

 to white. In fact, the coloration is very like that of Ps. 

 barbutellus. 



Head black, with some yellow hairs on top. Thorax 

 black, with a yellow band in front and some yellow hairs, 

 generally sufficient to form a narrow band, behind. 

 Abdomen black; with the 1st segment yellow; 3rd 

 segment light yellow, soon fading to white, but black in 

 the middle and at the base ; 4th and 5th segments and 

 sides of the 6th segment white. A variety occurs in which 

 the 4th and 5th segments and sides of the 6th segment are 

 yellow. 



Coat longer, much less even and somewhat denser than in 



Ps. ves talis 



3 4-5 Ps. disti nctus 



TXT 



Fig. 31. Antennae of Ps. vestalis <$ and Ps. distinctus $. 



vestalis these differences combined are very noticeable. 

 The coat is somewhat shorter, somewhat denser, and some- 

 what finer than in barbutellus. Hairs on the legs longer 

 than in vestalis. 



Hind metatarsi slightly shorter than in vestalis. 



The best characters for distinguishing distinctus from 

 vestalis lie in the male antennae. These are much shorter 

 than in vestalis- length, of flagellum 5 mm. and have the 

 3rd joint about as long as the 5th, the 5th being much shorter 

 than the 3rd and 4th together. 



Armature like that of vestalis ; but there are slight 

 differences in the relative dimensions of the parts, and the 

 inner margins of the forceps are less hairy, especially 

 towards the base. 



I took Ps. distinctus plentifully at Colinton, near 



