8378 



Insects, 



then generally placed precisely in the middle of the margins, and this 

 form then passes into that in which the fascia is vertical on the inner 

 margin ; on the other hand, if the costal spot stretches to the inner 

 margin, the dorsal spot is then almost entirely dropped, and forms only 

 a slight extension of the oblique fascia towards the base. The cilia 

 beyond the divisional line are pale, only of a darker gray at the anal 

 angle. The posterior wings are pale gray, with darker gray cilia. 

 The under side is of a paler or darker black-gray, rather paler on the 

 posterior wings. The colour of the frontal tuft appears constant in 

 N. angulifasciella, N. Rnbivora and N. atricollis ; in N. Agrimoniella 

 it varies from rusty yellow to dark brown, and in N. arcuata from 

 luteous or rusty yellow to blackish gray, and certainly the males have 

 generally the pale yellow colouring, and the females the dark brown 

 or gray tint. The cervical tuft is dark. The antennae are rather 

 short (longer in N. Agrimoniella and N. arcuatella), blackish, more 

 rarely pale gray ; the abdomen and the legs are blackish, the femora 

 and middle tarsi often paler, but not the middle tarsi ; the hind tarsi 

 at the extreme tip pale (in N. arcuata this pale colour extends to the 

 first joint). The cocoons are oval, flat and black; that of N. Agri- 

 moniella is lilac. The larvae all live in the leaves of Rosaceae at the 

 end of September and beginning of October, appearing probably only 

 once a year in the imago state in June. N. atricollis alone is double- 

 brooded. 



25. N. Agrimoniella, H.-S. 



Capillis ferrugineis aut fuscis, antennarum conchula flavida ; alis 

 anterioribus postice valde dilatatis, grosse squamatis, nigris 

 fascia media argentea, nitida ; ciliis post lineam nigram albidis ; 

 tarsis posticis nigris, apice lutescentibus. Exp. al. 2 — 2j lin. 



HerrichSchaffer, Corresp. Blatt. 1860, p. 60, No. 3. Neue 

 Schmett. 169. 



This species is distinguished from the rest by the peculiar form of 

 the anterior wings, which are extraordinarily dilated by the longer cilia 

 at the anal angle, being directed more posteriorly; this is especially 

 conspicuous in the male, where the anterior wings gradually increase 

 in breadth from the base ; generally in the female this form is not so 

 decided, but the wings are more suddenly dilated beyond the middle. 

 The frontal tuft in the male is generally rusty yellow, at the neck 

 brownish ; in the female generally dark brown, yet males do occur 

 with brown heads and females with ferruginous heads. The eye-caps 



