species: fulgurea Guenée, Java.
(type species nigripalpis Walker,
previous genus for similarity of external features; however, the strong
fasciation is never doubled. The forewing apex is slightly falcate, and the
fringes of the wings are darker than the ground rather than the same or paler as
male abdomen, the eighth segment and the genitalia are shorter and broader than
of similar structure, though the eighth sternite has a pair of large coremata
rather than zones of scales, and the genitalia are more robust, the distal part
of the valve reduced to an ovate flap not much longer than the costal process.
The tegumen has a shallow exterior lobe with hair-scales on each side.
female genitalia (fulgurea) have the seventh sternite slightly shorter than the
tergite but rectangular rather than triangular, almost as wide as the tergite.
The ostium is at the posterior margin, associated with a transverse strap-like
sclerite that bears circular pads on each side of the ostium. The ductus is
long, slender, sclerotised, slightly twisted, being somewhat less sclerotised
over the distal third. The corpus bursae is almost spherical, with the ductus
seminalis arising near the junction with the ductus. The bursae is lightly
rugose throughout, with a small, scobinate boss providing a signum near the
centre on one side.
genus consists of two species described below, which share the features just
described, therefore bringing Zinna into
synonymy. Poole (1989) also included the African prompta Walker,
the type species of Obba Walker, a junior homonym, following Nye (1975) in relating this
However, a note by A.H. Hayes in the BMNH collection indicates that prompta,
with a prominent lobe of scales on the male forewing costa, is better referred
is placed as a synonym thereof, syn. n.
>>Forward <<Return to Content Page