30 METAMORPHOSES OF BRAZILIAN LEPIDOPTERA. 



XXXIX.— Megalopyge fuliginosa, n. sp. 



Megalopyge fuliginosa, n. sp. — Female. Dull fuliginous-brown, semi- 

 diaphanous ; forewing with an indistinct ochreous-grey spot at end of the 

 cell, and a transverse submarginal slightly-waved band. Body olivaceous 

 ferruginous-brown ; antennae white ; front of head, palpi, and legs 

 blackish. Expanse 2| inches. — F. Moobe. 



Larva. Full-fed. San Paulo, March, 1881. 



The caterpillar feeds on the Guava. It is very short and 

 fat, and is covered with feathery hairs, black, white, and 

 chestnut colour, beautifully blended. At the roots of the 

 hairs are clusters of venomous spines with powerful urticating 

 properties. 



Pupa. Not preserved. 



Pupation takes place within a tough cocoon, with a " trap- 

 door " at the anterior end, which is flattened and carinated. 

 It is surrounded by a thickly woven web, in which the hairs 

 of the caterpillar are mixed. When the moth emerges, the 

 skin of the pupa is left protruding from the orifice. 

 (a, ? Full-fed, March, 1878. 



Imago. \ Imago, January, 1879. 



[h, ? January, 1879. 



The moth appears ten months after the caterpillar is full- 

 fed. 



Genus Hyleria. Hiibner. 

 LXIV. — Hyleria falcifera. 

 H. falcifera, Hiibner, Samml. Exot. Schmett. ii., i., f. 1-4. 

 Larva. Full-fed. San Paulo, 24th February, 1880. 

 The caterpillar feeds on a species of Mimosa that is 

 common, and often used for hedges near San Paulo. It is 

 social in its habits, remaining in large clusters in a loosely 

 spun web during the day, and separating to feed at night. 



