420. 



CEROSTOMA ANNULATELLA. 



The ringed diamond-back. 



Order Lepidoptera. Fam. Tineidae. 



Tijpe of the Genus, Tinea Xylostella Linn. 

 Cebostoma Lat. — Alucita Lat. — Ypsolophus Fab., Haw. — Tinea 

 Linn., Hub. 



AntenncB porrected in a line with the body when at rest, inserted 

 on each side the head near to the eyes, rather long and slender, 

 thickened towards the base, densely clothed with scales above ( 1 ) . 

 MaxilloE shorter than the antennae, slender and spiral (3). Palpi 

 minute, acute and porrected upward. 



Labial Palpi rather long, curved upward and parallel, basal joint 



the shortest, 2nd densely clothed with long scales, projecting 



from the underside and apex and forming a long thick brush (4). 



3rd joint the longest, very slender and clothed with minute scales 



(4 a). 



Head tufted or clothed on the crown with somewhat upright scales (7). 



Eyes lateral subglobose (7 *) . Wings very much defiexed and turned 



up at the apex when at rest ; superior long, narrow and lanceolate ; 



hferior lanceolate and deephj ciliated. Abdomen much shorter than 



the wings, linear in the males, ventricose in the females, slightly 



tufted. Legs slender, anterior the shortest. Thighs, posterior very 



short. Tibiae, anterior with an internal spine, the others spurred at 



the apex, the posterior very long clothed only ivith short scales and 



having a pair of spurs near the middle (8 t)- Tarsi 5-jointed, basal 



joint long. Claws minute. 



Larvae subfusiform with 6 pectoral, 8 abdominal and2 anal feet. Roesel, 



Pupee inclosed in a web. 



Annulatella Curtis's Guide, Gen. 1031. 2. 



In the Cabinets of Mr. Wailes and the Author. 



The narrow wings of this httle group and the less developed 

 maxillary palpi will distinguish it from the Ypsolophi; to which 

 it is so nearly allied, that it is perhaps scarcely worth separa- 

 ting them. I have however applied Latreille's name, which is 

 equally applicable to both ; and if the true Ypsolophi do not 

 porrect their antennae as these do when at rest, there is good 

 reason to divide them. The genus of C. hesperidella depends 

 on this character, for it is in every other respect an interme- 

 diate form. 



As I shall most probably not illustrate Ypsolophus, I shall 

 here give the species, &c. 



1. Y. mucronellus Hub. Tin. pi. 15. Jl 99. — July, Darent, 



Messrs. Chant and Bentley, Aug. Sept. Coomb Wood. 



2. Y. sylvellus Hub. 63. 420. — Persicellus Ha'-d\ not of Hub. 



— bifasciatus Haw. — Nemorum Fab. — Middle of 

 June and September. 



