Falcatula falcatus
Male: Similar to Falcatula cymatodes but overall colour much paler and with a more regular and distinct pattern of transverse lines on the forewing upperside. Forewing outer margin concave between apex and M3. Forewing upperside ground colour generally pale grey. Hindwing upperside ground colour brownish-buff, contrasting with the pale grey of the forewing. Specimens in which the upperside ground colour of head, thorax and wings darker brown with a more strongly developed pattern of dark brown transverse line and bands have been referred to as a separate species, "Falcatula penumbra", but such moths are here considred just a darker form of Falcatula falcatus.
Female: Larger and darker than the male, with a more strongly curved costa and a slight emargination below the apex on the outer margin of the forewing; hindwing tornus not produced. FWL: 38-42 mm.
Male genitalia: Uncus long, downcurved with an apical hook. Gnathos formed of two short broad plates with upturned inner edges that almost meet. Saccus long, broad, rounded. Valve bilobed, consisting of a strongly sclerotized, very slender long pointed upper lobe, and a broad, rounded, membranous lower lobe, sclerotized basally and along the ventral edge, on which there is a single short spine. Phallus straight and pointed.
Female genitalia: Abdominal tergite 8 with a median posterior sinus. Sterigma with a pair of very prominent projecting plates armed with 3-4 stout spines flanking the ostium bursae, immediately anterior to which are two concave oval plates. Ductus bursae very short. Corpus bursae spongy, very small, reflexed posteriorly.