Allacta can be distinguished from Sundablatta (front femur Type C) by front femur Type [B.sub.2] or [B.sub.3], from Pseudophyllodromia (the front and mid tarsi with pulvilli on the 4 proximal tarsomeres, hind tarsus with a pulvillus
only on the fourth tarsomere) by pulvilli present only on the fourth tarsomere of all legs.
DIAGNOSIS: Pinophylus is distinguished from other conifer inhabiting genera of Phylini by the distinctive sexual dimorphism, with the costal margins of the hemelytra elongate and parallel-sided in the male and shorter and subovoid in the female; the brownish black dorsum with inconspicuous dark simple setae; the pretarsus with the base of the claw expanded and the pulvillus
small; and the endosoma composed of two straps with a subapical secondary gonopore.
Legs small, sparsely bearing small, simple setae, femora not reaching margin of body; trochanters weakly represented; tibio-tarsal articulation distinct; each tarsus with long golf-club seta; claws absent, pulvillus
in the form of a circular pad.
Leg: Light brown, setation predominantly white; pro, mes, and met coxa lightly grey pubescent, long white setose; met trochanter setose medially; femur light brown, met femur more-or-less cylindrical only slightly wider than pro and mes femur, in distal half without ventral macrosetae, posteroventrally long white, erect setose and setae arranged in distinct row; pro, mes, and met tibia straight, met tibia cylindrical, ventral keel absent, lateroposteriorly long white, erect setose and setae arranged in distinct row; pro and mes tarsomere 1 longer than tarsomere 2, but less than combined length of tarsomeres 2-3, met tarsomere 1 as long as combined length of tarsomeres 2-3; pulvillus
well-developed, as long as well-developed claw, and as wide as base of claw; empodium absent.
Pretarsal claw with one prapical denticle and slender pulvillus
. Hypandrium small, fused on the sides to claspers; proximal halves of these, robust, setose, distal halves slender, elongate, straight, preapically dilated, terminally acuminate (Fig.
The Erosion of Difference: Horatius Pulvillus
Hind tibiae light brown, with light rings on the base and middle sections of tibiae; ends of the first and second segments and the entire third segment of pulvillus
An SEM study of leg features of adults, specifically the form and structure of the tarsal claw and pulvillus
, was also conducted and these were compared to the same structures in examples of the true bat fly ectoparasitic families Nycteribiidae and Streblidae, and to the phoretic Mystacinobiidae.