7~ y^3o 



324. 



LARISSA IMBUTATA. 



The dyed treble-bar Moth. 



Order Lepidoptera. Fam. Phalaenidae Lai., Leach. 



Type of the Genus, Phalsena plagiata Linn. 



Labissa Nob. — Aspitates 8f Larentia Treit. — Anaitis Goda. — Pha- 

 lsena Linn., Haw., 8(c. 



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

 slender, and setaceous in both sexes, basal joint scarcely larger 

 than the following, which are clothed with scales above and pu- 

 bescent beneath (1). 



MaxillcE as long as the antennae, very spiral and furnished with 

 a few tentacula at the apex (3). 



Labial Palpi porrected a little obliquely, extending beyond the 



head, compressed, rather obtuse, clothed with short and broad 



scales, the terminal joint a little apparent (4) : triarticulate, 



basal joint curved, rather longer and stouter than the 2nd ; 



which is straight and slightly attenuated, 3rd joint small and 



conical (4 a). 



Head small and globose. Eyes globular (7 a). Abdomen rather short 



and slender, obtuse in the males, conical at the apex in the females. 



Wings forming a triangle when at rest, entire, superior ample and 



lanceolate, inferior rather narrow, heg!^ long and slender. Coxae j 



anterior very long. Thighs j middle pair rather the longest. Tibiae j 



anterior exceedingly short, with an internal spine, the others long 



and spurred, the hinder pair with spurs below the middle. Tarsi 



5-jointed, basal joint very long, penultimate as long as the terminal 



one. Claws and Pulvilli distinct (8, afore leg). 



Larvae loopers, with 6 pectoral, 2 abdominal and 2 anal feet ? 



Imbutata Hub. Geom. pi. 78. f. 403. 



Pale bright grey. Superior wings with 2 oblique brown waved 

 bands, forming a bar across the middle, generally meeting about 

 the centre, the outer one being very much indented externally ; 

 near the base is a brown striga and a pale wave ; near the apex 

 upon the costa, a brown spot, and from the apex arises a waved 

 band extending to the posterior angle, and forming a double 

 arch j from the posterior margin, which is dotted with black, 

 arises a fine rosy blush. Body and inferior wings cinereous, the 

 latter with an obscure dot towards the base, and an undulated 

 pale wave across the middle. Cilia spotted brown and white, 

 particularly of the superior wings. 



In the Author s and other Cabinets. 



