100 THE FLORIDA BUGGIST 
Described from a single female taken by beating Hupatorium ageratoides 
in bloom. Nov. Gainesville, Fla. Type in the author’s collection. 
The following key will enable one to separate the new genus 
from the others of section 2 of the Phloethripidae (Moulton Bul. 
21 Tech. Se. Bur. Ent., U. S. D. A.), comprising those genera in 
which the head is considerable longer than wide and longer than 
the prothorax. This is not a very good character on which to 
divide the family, as it divides at least one genus (Haplothrips), 
but it is a convenient one, and much used. 
KEY TO THE GENERA OF PHLOEOTHRIPIDAE 
II. Head considerably longer than wide and longer than the prothorax. 
a. Head less than twice as long as wide. 
b. Fore femora with a tooth on the inner side near the end. 
In our species the fore femora are enlarged but the inter- 
mediate antennal segments are not elongated. 
Acanthothrips, Uzel. (Hoplothrips). 
bb. Fore femora unarmed, in the female, at least. 
c. Wings wanting, reduced to pads, or very short and 
weak. 
d. Mouth cone shorter than its width at the base, 
labrum with a blunt tip. ....Cephalothrips Uzel. 
dd. Mouth cone as long as width, labrum sharply 
pointed. 
e. Cheeks with spine-bearing warts. 
Malacothrips. 
ee. Cheeks without spine-bearing warts. 
f. Intermediate antennal segments not 
elongated. Fore femora not greatly 
enlarged. 
g. Cheeks parallel, fore tarsi 
armed with spines. 
Neothrips Hood. 
ge. Cheeks arched, fore tarsi un- 
armed. Gnophothrips 
Hood & Williams. 
ff. Intermediate antennal segments 
elongate, fore femora greatly en- 
larged. Megalomerothrips, gen. nov. 
ec. Wings fully developed. 
d. Wing's constricted in the middle. 
e. Mouth cone broadly rounded at the end. 
f. Cephalic bristles normal. 
