Monograph on Argyresthia. xiii 



inner margin, is a short, oblique, fascia-formed luteous spot, frequently nearly meeting 

 the opposite costal spot ; at the anal angle is another small luteous spot, which the 

 opposite costal fascia-formed spot nearly touches ; at the extreme apex are a few dark 

 fuscous spots: cilia pale. Posterior wings very pale gray, with whitish cilia. 



The colour of the abdomen at once distinguishes this species from all its conge- 

 ners except the following, but from that it is distinguished by the pearly white ground 

 colour of the anterior wings, the paler annulations of the antenna?, the paler feet and 

 less-spotted tarsi ; moreover, the posterior wings of this species are broader and less 

 pointed than in dilectella. 



This species, like the following, is a juniper-feeder ; and these, with arceuthina 

 and praeeocella, have caused some confusion, one being the juniperella of one cabinet 

 and another of another cabinet. There are rarely two species out at the same time, so 

 that a collector among the junipers in May would take one species, whereas a collector 

 in June or July would take another. It is therefore very important to ascertain the 

 precise period, if possible, of the appearance of each ; and unfortunately with regard 

 to the present species I can give no certain information, except that on the 5th of 

 July, when dilectella was abundant at Sanderstead, I took only two specimens of this 

 species ; probably the right time for this would be the middle of June. 



Sp. 14. dilectella, Zeller. 



Argyresthia dilectella^ Zeller, Linn. Ent. ii. 272. 

 Argyromiges Housella, Dale in litt. 



Expansion of the wings 4 lines. Head white. Forehead white. Palpi white. 

 Antenna? white, annulated with dark fuscous. Thorax white, with the sides luteous. 

 Abdomen rufous. Legs whitish. Tarsi whitish, spotted with fuscous. Anterior 

 wings shining golden, with a violet tint in certain lights, especially towards the apex; 

 two luteous streaks proceed from the base, one near the costa, the other towards the 

 inner margin, and terminate rather before the middle of the wing: on the costa are 

 two luteous spots, one about the middle of the wing, the other nearer the apex, and 

 just before the apex is an irregular blotch of the same colour : about the middle of the 

 inner margin is a fascia-formed luteous spot, curved outwardly, and approaching very 

 close to the second costal spot, and at the anal angle is another luteous spot; at the 

 extreme apex is a black dot : cilia pale, with a dark line a little from the edge of the 

 wing, and another at the extreme edge of the cilia. Posterior wings pale gray, with 

 paler cilia. 



The rufous abdomen is a certain character by which to distinguish this species 

 from all others of the genus except the preceding ; but from that, independently of the 

 different ground colour of the anterior wings, it is distinguished by the darker annula- 

 tions of the antennae, the more spotted tarsi, and the more pointed posterior wings. 



I this year took a considerable number of this insect from the junipers at Sander- 

 stead, July 5th, and towards the end of the month I met with a few in a garden at 

 Sheffield, likewise on juniper. I believe it was first taken in this country near Bris- 

 tol, by Mr. Dale. 



