New Micropterygid Moths • — Dumbleton 
21 
Fig. 5. A. vitknsh, male and female genitalia, a-d^ Male: caudal, dorsal, lateral, and ventral aspects; e, /, 
aedeagus, lateral and ventral aspects; g, female. Abbreviations as in Fig. 4. 
principal element being a narrow transverse 
sclerite. On the venter at the junction of the 
first and second abdominal segments the 
membrane is invaginated, and on the opposed 
surfaces are two elliptical sclerites, the tips of 
one articulating with those of the other and 
with the tip of a transverse sclerite on each 
side which is angular posteriorly. A narrow 
curved sclerite, or rod, runs from the ' an- 
terolateral margin of the second sternite to 
a point midway between the median line and 
the spiracle. In a posteromedian position on 
the second sternite there is a small rectangular 
sclerite, concave anteriorly. On each side of 
the anterior margin of the second tergite, two 
short longitudinal sclerites, or rods, run 
posteriorly. In the male there is a pair of 
glandular processes (Fig. 3/) on the fifth 
sternite. Also in the male there are two lateral 
processes (Fig. Ad) from the anterior margin 
of the eighth sternite, which are withdrawn 
into the seventh segment. 
In the male the basal piece of the genitalia 
(ninth sternite) forms a complete ring pos- 
teriorly (Fig. 4), but both dorsally and ven- 
trally this piece is deeply emarginate, and the 
two lateral wings thus formed are deeply 
sunken within the eighth segment. Caudad of 
the basal piece on the dorsum are two para- 
median lobes (9 t), and between and behind 
them is a grooved median pigmented sclerite 
(10 t) which is bilobed and bears short setae 
posteriorly (Fig. ^d). Between this and an 
opposing ventral sclerite is an invagination 
which may be the site of the anus. Between 
this sclerite (10 s), which has anteriorly a 
circular area with scale-like imbrications, and 
the bases of the claspers is the genital open- 
ing through which is protruded the aedeagus. 
The large claspers (Fig. ‘bb-d) have dense 
stout setae on their internal faces and articu- 
late with the ventral part of the basal piece. 
The aedeagus is shown in Figure f. 
In the female the ninth segment forms the 
long narrow ovipositor (Fig. 5g). It is 
strengthened by a single median rod which is 
forked anteriorly. 
PUPA: The pupa is shown in dorsal and 
ventral views in Figure 6a, b. The mandibles 
are shown in Figure 6c and the clypeus and 
labrum in Figure 6d. There are two pairs of 
long setae or hairs on the frontal region and 
two pairs on the occipital region. The clypeus 
bears three setae on each side. The pupal skin 
of the type has nine setae on the labrum, four 
on one side and five on the other. There are 
