•^7 



571. 



P^DISCA SEMIFASCIANA. 



The short-barred Grey Moth. 



Order Lepidoptera. Fam. Tortricidae. 



Type of the Genus, Tortrix profundana Wien. Verz. 



P^DiscA Treit. — Thirates Treit., Curt. — Eudemis and Aphaniai/ufi. 

 — Ditula Step. — Tortrix Haw., Treit. — Pyralis Fab. 

 Antenna inserted close to the eyes on the crown of the head, 

 short and setaceous, composed of numerous turbinate joints 

 clothed with scales above, pubescent beneath (1). 

 MaxillcB spiral, but not longer than the palpi (3). 

 Labial palpi porrected obliquely, a little divaricating, clavate, 

 compressed, densely clothed with short scales, the tip of the 

 apical joint apparent (4), triarticulate, basal joint short, clavate, 

 2nd long and inflated towards the apex, 3rd a little shorter 

 than the 1st, slender, elongate-conic (4 a). 

 Head rough with hairy scales : eyes large and ovate : ocelli distinct. 

 Thorax clothed with depressed scales. Abdomen rather long linear 

 and tufted at the apex in the male. Wings very slightly deflexed in 

 repose, rather short and broad; superior with the casta arched, the 

 apex truncated and rounded; inferior ovate-trigonate, very little 

 emarginate towards the apex, cilia short. Legs, anterior the short- 

 est and stoutest: tibicC, anterior very short, obtrigonate, with an in- 

 ternal spine ; intermediate robust, spurred at the apex, hinder long 

 and stout, loith a pair of unequal spurs at the apex, and another pair 

 at the middle : tarsi 5 -jointed: claws minute (8 f, hind leg). 

 Larvae with 6 pectoral, 8 abdominal and 2 anal feet ?. 

 Obs. The dissections ivere taken from the Insect figured. 



Semifasciana Haio. — Curt. Guide, Gen. 948. 5. 



Silvery-grey, sometimes cinereous : superior wings with numer- 

 ous short irregular transverse lines most distinct on the costa ; 

 a brown angulated fascia near the base, with several black dots ; 

 an abbreviated brown fascia at the middle of the costa termi- 

 nated in the centre by a longitudinal black line ; there are 2 

 brown spots on the costa towards the apex, where there are 

 also several black dots sometimes assuming a furcate form : in- 

 ferior wings and abdomen ochreous fuscous. 

 Obs. Sometimes the black dots are not visible and the line is 

 very indistinct. 



In the Author's and other Cabinets. 



Whilst my Guide was printing I received Treitschke's 7th 

 volume, just in time to add his names to the Tortricidse, and 

 amongst them Thirates. Hubner, it appears, had divided this 

 little group into two genera, yet Mr. Stephens has lately 

 given it a new name, so tliat the five species ai-e burthened 



