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Lutzugia Gen.
n.
Type
species: trigonalis Kobes.
The only
species was originally described in Ugia, but shows numerous striking
differences from that genus, none of which appears to be shared with another
more suitable genus. It is therefore placed in a new one.
The male
antennae are filiform, sparsely ciliate, and have a distinctive node and scale
tuft at a slight flexure at about two fifths. The labial palps have the third
segment short, one third of the length of the second. The forelegs have the
femur and tibia strongly tufted, the latter with an extensive fawn-white hair
pencil interiorly. The forewing facies is striking (see below and illustration)
and the margin is slightly angled centrally. The hindwings are relatively much
smaller, than the forewings than in Ugia
and
are uniform dull brown except for, in the male, a longitudinal pleat with a
transparent central line through the centre of the cell, which is open at its
distal end. Posterior to this, veins M2, M3 and CuA1 branch from each other near
the margin in the formation ((M2, M3) CuA1). In the female, M2 is separate from
(M3, CuA1).
In the
male abdomen the eighth segment is unmodified apart from apodemes on the tergite.
In the genitalia the uncus is robust, and there is a scaphium. The valves are an
elongate oval with a central depression that terminates subapically with a
thorn-like process. The saccus is long, slender, acute. The aedeagus vesica has
a major diverticulum with a row of cornuti along one side, increasing in size
and robustness to the apex where there is a significantly more robust one.
The
female has the ostium in the eighth segment, cleft, splaying on each side. The
ductus is narrow, membranous. The corpus bursae is a slightly asymmetric
pyriform, set asymmetrically on the ductus, with crinkly corrugation over much
of one side.
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