l62 ENTOMOLOGICAL NEWS. [April, '15 



On Some American Aeolothripidae (Thysanoptcra). 



By J. Douglas Hood, U. S. Biological Survey. 

 Three years ago, in this journal, Dr. E. A. Back recorded 

 Aeolothrips vespiformis Crawford, as rather common at Or- 

 lando, Florida. The species had been described three years 

 before from a unique female collected in Nicaragua. For it 

 he erected the new genus Franklinothrips, in honor of Dr. 

 Henry J. Franklin. A second species of this genus is describ- 

 ed below, from Panama. The European Aeolothrips albicinc- 

 tus Haliday is also reported for the first time from America. 



FRANKLINOTHRIPS Back. 



1912. Franklinothrips Back, Ent. News, Vol. XXIII, p. 75. 



1913. Franklinothrips (pars), Bagnall, Trans. 2nd Intern. Ent. 



Congr., pp. 396, 397. 



1913. Franklinothrips (pars), Bagnall, Journ. Econ. Biol., Vol. 8, 

 p. 157. 



Type. Aeolothrips vespiformis Crawford, designated by 

 Back, 1. c. 



This genus is very distinct from Aeolothrips, in which its 

 type species was originally described, as shown by the union 

 of the head and prothorax into a compact elliptical mass; by 

 the short broad head, whose outline as seen from above is 

 almost exactly semi-circular; and by the narrow fore wingss 

 which are without cross veins, distinctly broader across scale 

 than at basal fourth, and which have a denuded area near 

 base and long costal bristles. 



Aeolothrips longiceps Crawford, A. nasturtii Jones, and 

 Mitothrips me galops Try bom have recently been placed in 

 Franklinothrips; but the first two of these appear rather to 

 be true members of the genus Aeolothrips Haliday, while the 

 third forms the type of the genus Mitothrips Trybom. Aeolo- 

 thrips longiceps is almost certainly a male of A. kwwanaii 

 Moulton in which the wing veins have become obliterated by 

 the reagents used in its mounting; and it is just possible that 

 this explanation is the proper one for the disappearance of 

 the cross veins in the wing of ^. nasturtii. Both species 

 were described from uniques. 



