04 
New Species of Trichodectes 
the head, sides diverging, and rounded at the postero-lateral margins, with 
a broad band at the lateral margins and three small pustulated hairs on each 
side in a transverse line near the postero-lateral margins. 
Abdomen. Elongated and narrow, white in colour, with crenulated lateral 
margins. Segments widely diverging towards postero-lateral borders, and with 
a yellowish-brown transverse band on the dorsal surface of each segment. 
On the dorsal surface, at the posterior margin of the band on first segment, 
one short pustulated hair on each side of the meson; last segment bilobed at 
the apex, with three to four median hairs on each lobe, and with a pair of 
short pustulated hairs situated on each side just within the lateral margin, 
and another pair mid-way between these towards the posterior indentation'; 
remaining segments with a transverse row of minute pustulated hairs; segments 
two to seven with a small spiracle at each lateral angle. 
Male. Total length 1*56 mm., length of head 0-40 mm., length of pro- 
thorax 0-07 mm., length'of metathorax 0*14 mm., length of abdomen 0-95 mm. 
Width of head 0-28 mm., width of prothorax 0-22 mm., width of metathorax 
0*26 mm., width of abdomen 0-43 mm. 
Head. With the median notch deeper than that of the female. Antennal 
sinuses deep. Ocular projections small, not well defined. Temples narrow, 
smoothly rounded. Occipital margin markedly convex, emarginate w T here it 
is met by the occipital bands. Eye pronounced. Antennae large, and back¬ 
ward pointing, reaching the metathorax; the first joint large and wide (sacu- 
lated) longer than the second and third joints combined; second and third 
joints of approximately equal length; on the upper surface of the first joint 
of the antenna, a longitudinal row of eight small pustulated hairs one beside 
the other, and extending from the proximal to the distal extremity; third 
joint slightly curved, and at the distal end two or three short stout dark- 
brown denticles. Mandibles situated well forward on the head. 
Abdomen. Closely resembles the female in general outline, with the last 
segment oval, and having a row of medium sized hairs at the tip. On the 
dorsal surface, the transverse brown bands of segments four to seven are 
deeper (somewhat telescopic in appearance), and with well marked projecting 
somewhat rounded edges almost reaching the spiracles at the lateral angles. 
(Fig. 3 gives an excellent representation of these bands.) 
Genitalia. Very conspicuous. The basal plate longer than the parameres, 
and consisting of two thickly-chitinised bars slightly thickened and rounded 
at their posterior end. Parameres long and narrow, of even thickness through¬ 
out their length (concavo-convex in shape), and markedly diverging pos¬ 
teriorly. Penis long and stout. Beneath the penis a wedge-shaped plate with ‘ 
the posterior end bifid. (Plate II, fig. 3.) 
This species would seem to be closely allied to Tr. lineatus n.sp., de¬ 
scribed by Bedford in Part II, Anop. from South African Hosts (1920). The 
shape, however, of the abdominal segments of both male and female, and 
