17,2 Karny: Thysanoptera from the Philippines 205 
cheek spines well defined. Antennal joints of the same form 
as in sumatrensis, each bearing some strong bristles near the 
middle and before the apex; the two basal and the two apical 
joints without sense cones; third, fourth, and fifth with one 
on each side; sixth with only one at the inner margin. 
Prothorax transverse, dilated toward the base. Bristles and 
spines of prothorax and fore coxae as in sumatrensis. Surface 
of all femora wholly covered with paler, spine-bearing pits. 
Fore femora strongly incrassate in the male; fore tarsus of 
the male armed with a very large, somewhat inwardly directed 
tooth, which is about as long as the tarsus is wide and at base 
two or more times wider than in sumatrensis. Intermediate 
femora without a conspicuous tubercle. 
Mesothoracic appendages not bifurcate, lanceolate, with a 
sharp outwardly directed tip (fig. 2) ; on the anterior margin 
with two, on the posterior with one blunt tooth. Coloration of 
wings as in sumatrensis ; hind margin of fore wings with about 
seventy pairs of fringe hairs. Chsetotaxy of abdomen and form 
of tube as in sumatrensis. 
Measurements of Dinothrips monodon sp. nov., male. 
1 - — 
Length. 
Width. 
Antennae: 
mm. 
mm. 
0. 11 
0.08 
Second joint 
0. 
0.06 
Third joint . 
0. 45 
0. 07 
Fourth joint __ 
0. 35 
0.07 
Fifth joint 
0. 29 
0. 06 
Sixth joint ... 
0. 20 
0. 05 
Seventh joint.. 
0. 12 
0.025 
Eighth joint . ... 
0. 08 
0.015 
Total length of antennae.. 
1.7 
Head 
0.83 
0. 42 
Prothorax 
0.6 
“1.05 
Fore femora 
0. 85 
0.4 
Fore tibiae, including tarsi 
0.9 
0. 17 
Pterothorax 
1.1 
1.4 
Middle femora. .. 
0. 85 
0.2 
Middle tibiae, including tarsi. 
0. 95 
0. 12 
Hind femora 
1 0 
0. 18 
Hind tibiae, including tarsi 
1. 15 
0.1 
Wing, without fringe 
3. 5 
Abdomen.. 
4 8 
1.26 
Tube . 
0. 75 
Tube, at base 
0.2 
Tube, atapex 
0. 08 
Total length of insect ... 
7.5 
0 Across fore coxae. 
