1977] 
Thayer — Redescription of Xenicopoda 
143 
Redescription 
Length: mean 2.5 mm (2. 0-2. 7 mm), measured as is (slightly 
curled); estimated actual length 3.0 mm (2. 5-3. 6 mm). 
Head about seven-tenths as long as wide (from clypeal apex to 
nuchal constriction), epistomal sulcus absent (fig. 3). Vertex with 
well-impressed dorsal tentorial pits and small, rather obscure pale 
ocelli. (The dorsal tentorial pits are presumably what Moore and 
Legner (1971) meant by anterior tentorial pits. The latter are ac- 
tually very slight depressions antero-medial to the antennal inser- 
tions, indicated by short lines there in figure 3.) Weak nuchal 
constriction across dorsal surface just behind ocelli. Faint micro- 
sculpture on dorsal and ventral surfaces of head. Labrum nearly 
rectangular with rounded anterior corners, about 2.2 times as wide 
as long; margins entire. Mandibles as illustrated (figs. 1, 2) with 
well-developed molar areas composed of many small, sharp, buc- 
cally directed teeth. Maxillary palp four-segmented, more or less 
filiform, with first segment small; second and third segments larger, 
subequal to each other, more or less obconical; fourth segment at 
least twice as long as wide (2.1-3.3x, mean 2.5x), tapering toward 
apex, the whole segment twice as long as the third, but narrower 
than its apex. Labial palp three-segmented, each segment slightly 
longer and narrower than the preceding; third segment two to three 
times as long as wide. Gular sutures distinctly separate, closest at 
a level just before the hind margins of the eyes and diverging an- 
terior and posterior to this. Antenna filiform, basal segments dis- 
tinctly longer than wide, more distal ones becoming successively 
shorter and broader up to tenth segment, which is very slightly 
wider than long. First five or six antennal segments glabrous ex- 
cept for sparsely scattered long setae; segments six or seven to 
eleven with shorter setae in addition. The shorter setae become 
progressively denser on the more distal segments, while the longer 
setae diminish in number and become increasingly restricted to the 
apical area of each segment. 
Pronotum about seven-tenths as long as wide, about half as long 
as elytra; fairly evenly convex except for a small median basal de- 
pression; lateral margins evenly arcuate, slightly explanate in basal 
half; reticulate microsculpture on dorsal surface. In ventral view, 
postcoxal process of pronotum extends about halfway from lateral 
