AUTUMN NUMBER il 
ADDITIONS TO THE THYSANOPTERA OF FLORIDA. X 
J. R. WATSON 
54. Megalomerothrips eupatorii Watson. 
Male. The female only of this species was originally described. (Fla. 
Buggist, Vol. II, No. 8, Feb. 1919). We now have the male also. Much 
darker in color than the female, almost jet black. Fore tarsus with a very 
large, slightly curved spine, 27 interlocated bristles on the fore wing. Taken 
from the burrow of a cerambycid in a dead twig of avocado, Winter Haven, 
Oct., 1921. An additional female was collected by Dr. E. W. Berger in 
one of his colonies of cottony cushion scale. It may be predaceous. 
57. Dictyothrips floridensis Watson. 
Male. Considerably lighter in color than the female. Light brown with 
traces of bright red hypodermal pigment. Abdomen very slender, darker 
than the thorax. In the integument on the dorsal side of segments 2-7 are 
numerous large pellucid dots which occupy about 4% the surface. These 
peculiar dots seem to be entirely absent from the females. 
Larvae light yellowish brown with much red hypodermal pigment. 
Described from several males and larvae. 
In addition to the type locality in the Plant Introduction garden at 
Miami, this species has been collected in the Plant Introduction Garden at 
Brooksville by W. B. Wood and H. L. Sanford of the U. S. Horticultural 
Board. In addition to the original host, Guava, it was.taken on Passiflora 
sp., Rubus sp., Arracacia xanthorihisa, and Prunus sp. Since it has been 
found only in the Plant Introduction gardens and its nearest relative is a 
native of Mexico, it would seem quite probable that this is an introduced 
species, 
74. Heliothrips phaceoli Hood. 
Abundant on Kudzu on the Station grounds, Gainesville, June, 1921. 
75. Haplothrips gowdeyi Hood. 
In Bidens blossoms, Ft. Myers, March, 1922. Hitherto known only from 
the West Indies. 
76. Haplothrips humilis Hood. 
On compositae. Ft. Myers, March, 1921. Another southern species not 
hitherto found in the United States. 
77. Haplothrips merrilli Watson. 
This species, described from specimens taken from cocoanuts from 
Cuba, (Fla. Entomologist, Vol. IV, No. 1), was found by the writer under 
the cap scales of cocoanuts at Ft. Myers, March, 1922. 
78. Idolothrips tuberculatus Hood. 
A male of this species was beaten from basswood (Tilia americana) at 
Gainesville, April 14, 1922. 
(Mr. H. L. Dozier has specimens of Idolothrips armatus collected at 
Prairie, Miss., June 17, 1921, and Batesburg, S. C. It is quite probable 
that this species also occurs in Florida.) 
79. Zygothrips floridensis n. sp. 
Color: Light yellowish brown with much purple hypodermal pigment. 
Measurements: Total body length 1.2 mm.; head, length 0.20, width 
0.15 mm.; prothorax, length 0.11, width 0.21 mm.; metathorax, width 
0.24 mm.; abdomen, width 0.21 mm.; tube, length 0.10, width at base 0.06, 
