SUMMER NUMBER iii 
AN APPARENTLY NEW HAPLOTHRIPS FROM CUBA 
J. R. WATSON 
Haplothrips merrilli, n. sp. 
Color: Brown, tarsi and antennal segments 3 and 4 yellowish brown. 
Measurements: Total length 1.14 mm.; head, length 0.14 mm., breadth 
0.114 mm.; prothorax, length 0.1183 mm., breadth 0.20 mm.; mesothorax, 
breadth 0.19 mm.; abdomen, breadth 0.21 mm.; tube, length 0.086 mm., width 
at base 0.048 mm., at the apex 0.023 mm. 
Antennae: Total length 0.245 mm. 
Se ET ae ee Se ec 8 
Weno th .21..-...- | 32520) 338.0 | 38.0) | 37.5 | 35.4 | 32:5 | 32:0) || 21.4 microns 
ipreadth..;........: | 26.7 | 23.5 | 20.0 | 23.0 | 20.6 | 20.0 | 15.5 | 10.6 microns 
Head longer than wide and longer than the prothorax; cheeks slightly 
convex, sides almost parallel; vertex rounded; surface smooth. Postocular 
bristles rather long but pale and inconspicuous, knobbed. A pair of smaller 
bristles in the middle of the dorsum, one at the inner angle of each eye and 
one behind each posterior ocellus. Eyes rather small, occupying about %4 
the margin of the head and .6 the breadth; dark red; not pilose; facets 
small. Ocelli much larger than the facets of the eyes; red; bordered by 
heavy, dark red crescents; situated far forward, the posterior pair opposite 
the anterior 1% of the eyes and close to their margins but not touching; 
anterior far forward, facing forward. Mouth cone reaching .5 or more 
across prosternum, labium well rounded. Antennae 8-segmented, 1.7 times 
as long as the head. Segment 1 broad at the base, truncated; 2 constricted 
near the base into a broad stalk, cut squarely off at the apex; 3 broadly 
vase-shaped with a rather narrow stalk at the base; 4 oval, broad, short- 
stalked; 5 and 6 barrel-shaped with a short broad stalk; 7 oblong with a 
broad base; 8 conical. All provided with many short dark bristles. Sense 
cones short, colorless and inconspicuous. Three and 4 yellowish brown, 
the others concolorous with the head and body. 
Prothorax a little shorter than the head, anterior margin slightly convex, 
posterior more so; sides diverging markedly posteriorly; coxae large and 
conspicuous. Surface free of sculpture. Long but colorless knobbed bristles 
on each angle and on each coxa; two pair near the posterior border, a 
smaller pair near the middle and a larger laterad, a small pair near 
anterior margin. 
Pterothorax somewhat narrower than the prothorax (including coxae), 
sides slightly converging posteriorly; a few faint anastomozing lines near 
the anterior margin; 3 pairs of small bristles along the anterior margin 
and at least 6 pair along the sides. Legs rather long and slender. Fore 
femora considerably enlarged. Fore tarsi with a small curved tooth. 
Wings short, membrane reaching about to the fifth abdominal segment; 
fringing hairs very long, 5 interlocated ones. 
Abdomen rather long and narrow, quite so in some specimens; a pair of 
pale, rather large, knobbed bristles on the posterior angles of each tergite, 
and three pairs of heavy, curved, dark, sharp-pointed spines on the outer 
third of each dorsal surface of segments 2-5; the innermost of these, along 
(Continued on page 12) 
