ENTOMOLOGICAL NEWS. 115 



Preparatory stages of Spilosoma latipennis Stretch. 



By HARRISON G. DYAR, New York City. 



Egg. Not observed; the eggs had been entirely devoured by the little 

 larvae, but, judging from the marks left on the leaf, were about .6 mm. in 

 diameter. 



First stage. Not observed, but judging from the cast skins very similar 

 to the second stage. The head was pale, the jaws brown, width some- 

 what over .3 mm. 



Second stage. The larvae were found in this stage June 26th on an ash 



leaf, some twenty or thirty together. Head pale whitish, brownish on the 



clypeus and at vertex; ocelli black; width .4 mm. Body whitish, the 



warts concolorous and hardly distinguishable, bearing long whitish hairs. 



Length of larva 3 mm. 



Third stage. Head shiny, pale yellowish, faintly brownish at the ver- 

 tex, ocelli black; jaws brown; width, .6 mm. Body as before, the warts 

 small, concolorous, an/} bearing long blackish hairs. 



Fourth stage. Head as before, but not brownish at the vertex; width 

 ,9 mm. Body pale whitish, semi-transparent, the food showing through 

 as a darker band. Hair rather long, whitish. Length 8 mm. 



Fifth stage. Head pale straw color, ocelli black, mouth brownish; 

 width i.i mm. Body as before, the hair whitish and rather abundant. 



Sixth stage. As in the previous stage; width of head 1.3 mm. An 

 orange subdorsal spot on joint 12, and a much fainter one on joint 3. 



Seventh stage. As before; width of head about 1.6 mm. (measurement 

 not very accurate) A blackish subdorsal shade band and row of seg- 

 mentary white dorsal spots faint at the extremities of the body. Hair 

 rather long, mixed with black. 



Eighth stage. Head testaceous; jaws dark brown; ocelli black; width 

 2.1 mm. Body sordid greenish, mottled with black over the dorsum, a 

 white dorsal and super-stigmatal line and pale stigmatal shade; spiracles 

 white in a narrow black border; warts large, concolorous. Hair rather 

 bristly, of irregular length, tawny brown, mixed with blackish; on joint 

 12 an orange spot surrounding the wart of ro\v three. Thoracic feet 

 testaceous. 



Ninth stage. Head brownish testaceous, mouth pale, ocelli and jaws 

 black; width 2.3 mm. Body nearly black from the thick mottlings, the 

 dorsal and super-stigmatal lines white; spiracles as before. Thoracic feet 

 testaceous, abdominal feet black outwardly; a subdorsal orange spot 

 before wart three on joint 12. Venter as black as the body above; warts 

 large, pale yellowish. Hair foxy red, mixed with blackish. 



Tenth stage. Exactly as in the previous stage; width of the head 2.6 mm. 



Eleventh stage. Head testaceous brown, labrum, mouth and antennae 

 pale ; width 3.1 mm. Body nearly black, with only the merest traces of 

 the lines, the orange spots on joint 12 small; spiracles white. Thoracic 

 feet brownish testaceous, the claspers of the abdominal feet pale; warts 



