FENUSA PUMILIO. 299 



with a microscopic pile ; tegulae black. Abdomen about the length of 

 the head and thorax ; apex more or less truncated, sheath hairy ; blotch 

 very large. Legs whitish-testaceous ; base of coxae black ; apexofcoxee, 

 trochanters and basal half of femora more or less obscured with black 

 or fuscous ; apex of tarsi fuscous. Wings smoky, hyaline at the apex ; 

 nervures deep black, stigma large ; first radial cellule triangular, 

 smaller than the second ; transverse radial nervure received a little past 

 the middle of the second cubital cellule ; first cubital cellule nearly 

 double the length of second, and having near its apex a conspicuous, 

 round, black horny point ; second not much longer than broad, angled 

 where the recurrent nervure is received. 



The is similar in coloration ; the antennas are a good deal thicker 

 and slightly compressed, the third joint scarcely longer than the fourth 

 (in the $ it is perceptibly longer), and the femora have usually more 

 black on them. 



Length If line. 



Differs from betulce in its shorter antennas, perfectly 

 smooth head, the smoky wings hyaline at the apex and 

 in the position of the transverse radial nervure. From 

 the descriptions of Hartig and Thomson it seems to 

 vary considerably in coloration. The former author 

 describes it as having the mouth, antennse, abdomen 

 and legs dark brown, with the knees, tibiae and tarsi 

 pale brownish-yellow, while Thomson states that the 

 antennas are fuscous beneath, and the palpi, knees, 

 tibiae and tarsi, whitish-testaceous. A British specimen 

 in my collection has a brownish splash across the 

 mesonotum. 



Common and generally distributed. 



The larva is dirty white ; the head pale brown, 

 darker at the sides; mouth dark brown; eye spots black; 

 the thoracic legs are banded with brown, the abdo- 

 minal marked posteriorly with a semicircular black 

 mark, and the anal pair are surrounded with black. 

 On the back the second segment is black or brownish- 

 black, and sometimes on the third and fourth there is 

 a narrow band ; beneath the second segment is dark 

 brown ; there is an irregular band on the third and 

 fourth, and on the fifth and sixth a round dot, but 

 these are frequently absent. At the last moult the 

 markings are cast off. Length from 9 to 10 lines. 



The larvae mine the leaves of Rubus fruct icosus and 

 R. idceus, to the latter of which they often do such 



