3~ I "^ ^L 



140. 

 ERASTRIA OSTRINA. 



Order Lepidoptera. Fam. Noctuadse Leach., Lat. 

 Type of the Genus Phalsena Tortrix uncana Linn. 

 Erastria Och. — Erotyla H«6.— Phytometra Haw. — Phatena Tortrix, 

 Geometra Linn. — Pyralis Linn., Fab. 



Antennce alike in both sexes, inserted close to the eyes on the 

 crown of the head, rather short, setaceous, composed of nume« 

 rous quadrate joints, covered with scales above, and hair beneath, 

 basal joint elongate robust (fig. 1). 



Maxillce nearly or quite as long as the antennse, furnished with 

 glands towards the apex (3). 



Labial palpi porrected obliquely beyond the head (7 a), remote, 

 rather slender covered with scales (4), slightly curved, 3-jointed, 

 2nd joint long subclavate, 3rd smaller than the 1st, ovate (4 a). 

 Head short, covered with depressed scales. Ocelli two, behind the an- 

 tennce (7 a, the head in projile). Thorax not crested, covered with 

 short scales. Abdomen sUghthj tufted at the apex. Wings, nearhj 

 horizontal when at rest, forming a triangle. Tibiae, anterior with a 

 small spine on the internal side, middle and posterior pairs armed at 

 the apex and the latter towards the middle also with spines of unequal 

 length. Tarsi rather robust 5-jointed, basal joint the longest. Claws 

 simple. Pulvilli distinct (8 f , a hind leg). 

 Caterpillars half-loopers, with six pectoral, two abdominal and two 

 analfeet. Hiib. 



OsTRiNA Hub. Noct. Genuine, f 399. 



Pale ochraceous. Thorax with the centre and lateral scales 

 cinereous, margined with ochre. Abdomen whitish cinereous. 

 Superior wings slightly cinereous towards the base with a ferru- 

 ginous lateral line, a dull irregular orange space extending 

 across the centre, with a little obscure circle upon it, next to 

 which is a lilac and brown fascia with blackish nervures, white 

 and rosy towards the costa upon which are four white spots ; 

 this fascia is bounded next the posterior margin by a sinuated 

 white line dentated internally. Cilia very long, pale at the 

 base. Posterior wings whitish, tinged with ochre, fuscous 

 towards the margin. 



In the Author's Cabinet. 



