34 THE FLORIDA ENTOMOLOGIST 
But the Florida flower thrips (Frankliniella bispinosa) was en- 
tirely absent, its place being partly taken by its close relative F’. 
tritici. But this insect was by no means as common as ours. It 
did not swarm in the blossoms, even of roses. Three or four per 
blossom was the maximum. Still this was the most common 
species. Numerous dissections of the heads of Compositae failed 
to discover any Thrips abdominalis, so common in the heads of 
composites in Florida. 
Next after flowers these insects were most abundantly ob- | 
tained by sweeping grass and weeds. Our most common species | 
on grass, Haplothrips graminis, was entirely lacking. A new 
species of Haplothrips was obtained from grass but the most 
common species was F'rankliniella fusca. This was much more 
common than in Florida, where it is known chiefly as a pest of 
tobacco, and nearly as common as its relative F’. tritici. 
Beating and sweeping shrubs brought in very few specimens. | 
The most common was Leptothrips mali, the black hunter, a_ | 
predaceous species that was quite apt to be found on any plant | 
infested with plant lice. In vain were the young pines beaten for | 
our pine thrips Haplothrips pin. | 
In all twenty-three species were taken, four of which proved 
to be new. Thrips quinciensis, Haplothrips gracilis, and Hop- 
landrothrips flavoantennis have hitherto been taken only in 
Florida. Thrips impar was described from Maryland and has 
not hitherto been reported elsewhere. Frankliniella tenuicornis 
has not heretofore been reported from America. Thus four spe- 
cies have had their known range considerably extended. 
It is thus seen that the Thysanoptera, like the plants, show a 
mixture of southern and northern species. 
A list of the species and their host plants follows: 
THYSANOPTERA OF RABUN COUNTY, GEORGIA 
Species Number Host Plants 
taken 
Aecolothrips bicolor sHind sss 5 see 32. Grass: 
Sericothrips variabilis (Beach)............ 1....Shrubs. 
Chirothrips insolitus Hood.................... 1___.Grass. 
Wailacothraip sim) 2.2 ee ee 1_...Weeds. 
Heliothrips fasciapennis Hinds............ 9...Grass (8), smartweed (Polygo- 
num). 
Heliothrips haemorrhoidalis (Bouche) 1....Shrub. 
Thrips quinciensis Morgan.................... 2....1n blossoms of Vernonia and 
Polygala. 
