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SPILOSOMA ACREA. 

 PLATE XX. Fig. 1. 



Bombyx acrea, Fabr Phal. acrea, Abbot and Smith, Lepid. 



Georg., pi. 67 Spilosoma acrea, West. Drury, L pL 3, figs. 2 



and 3 — Arctia Pseudermiuea, Peck. 



This genus (the name of which is derived from 

 ff^/Xos, macula, and cw/^a, cropus) was first named 

 by Mr. Stephens, in his Illustrations of British 

 Entomology, and characterised in the following 

 manner : Palpi short, a little descending, Particu- 

 late, the two basal joints very hairy, the terminal 

 scaly, the basal joint somewhat longer than the 

 second, the apical rather small, oval, subconic; 

 maxillae short ; antennae slightly bipectinated in the 

 males, serrated in the females, each articulation 

 with a bristle at the apex ; head rather small, hairy ; 

 thorax and abdomen rather stout in both sexes, 

 the latter slightly tufted in the male, acute in the 

 female ; wings trigonate, deflexed, and opaque ; legs 

 moderately stout ; anterior tibiae short, with a spine 

 internally, the four posterior with spurs at the apex. 

 Larva slightly tuberculated, each tubercle producing 

 a whisker of hairs ; pupa obtuse, folliculated. 



It contains a great number of species both British 

 and foreign, remarkable for their beautiful white 



