288 GENUS FENELLA. 



the apex than at the base, and the apex of the sheath 

 hairy, while it is bare in the alder miner. 



The larva mines the leaves of various willows. 

 Common and generally distributed. 



Continental distribution : Sweden, Germany, France. 



Genus FENELLA. 



Fenella, Westwood, Intr., ii, Append., 54. 



Wings with two radial and three cubital cellules, the first longer than 

 the second, the first and second receiving each a recurrent nervure. 

 Lanceolate cellule petiolate. Posterior wings with no middle cellule. 



Antennae ten to fourteen-jointed, the third longer than the fourth. 



Eyes reaching to the base of the mandibles, which are short and thick. 



The sutures on the vertex and front are deep, the 

 palpi are short, six-jointed, the clypeus truncated. 

 The basal nervure is curved; the abdomen is short, 

 thick, not much longer than the head and thorax. The 

 transverse radial nervure is either interstitial or 

 received in the third cubital cellule. The body is deep 

 black, pilose on the head and antennae ; the tibiae and 

 tarsi are usually lighter coloured than the femora. The 

 wings are more or less smoky. 



The larvae are similar in form and habits to those of 

 Fenusa, only they are not attached to trees. 



Four European species are known. The genus 

 would appear to be confined to Europe. 



Synopsis of Species. 



1(2) Wings smoky, posterior tarsi and tibise black; antennas ten-jointed. 



Westwoodi. 



2 (1) Wings subhyaline, tibias and tarsi white; antenna3 eleven to twelve- 

 jointed. Nigrita. 



1. FENELLA NIGEITA. 



Fenella .nigrita, West., Int., ii, Synop., 54 ; Thorns., Op., 27, 

 2 ; Hym. Sc., i, 280, 1 ; (Jam., P. S. N. 

 H. G., iii, 15 ; Andre, Species, i, 233, 

 pi. xiv, fig. 2(2); Cat., 28,* 1. 



