Pseudoradiarctia Haynes

Haynes, Patrick G., 2011, A review of some of the Binna- like species of Afrotropical Spilosoma Curtis (1825) listed by Goodger & Watson (1995) and including the genus Radiarctia Dubatolov (2006) (Lepidoptera: Arctiidae, Arctiinae), Zootaxa 2811, pp. 22-36 : 25

Pseudoradiarctia Haynes gen. n.

Type species: Diacrisia rhodesiana Hampson, 1900 , by present designation.

Diagnosis. This new genus can be clearly distinguished from Radiarctia by the characteristic long narrow valvae, divided juxta with anteriorly extended processes, and the lack of foretibial spines. It can be separated from Binna by a well developed saccus, flat ribbon-like valvae, narrow and basally constricted uncus, and a juxta bearing two terminally extended narrow processes. In Binna , the valvae are tube-like section, the uncus is robust and without constriction, the juxta lacks the addition of terminally projecting processes, and the saccus is very weak and almost indiscernible. Unlike Binna , Pseudoradiarctia does not possess a club-like process arising from the base and ventral edge of the valva.

Description. Head orange or orange-brown; more orange dorsolaterally. Nuchal fringe orange. Palp orange or yellow medially, brown laterally. Antenna bipectinate with the longest pectination approximately half the diameter of the eye. Thorax buff-grey or grey-brown with orange or buff-orange fringes on the tegulae and patagia. Forecoxa approximately 0.75 length of femur and equal in width. Epiphysis approximately 0.6 length of tibia. Foretibia without spines; middle tibia with one pair of spines; hind tibia with two pairs of spines. Forewings pale buff, orange, or deep orange brown in Pseudoradiarctia scita . Interneural patches pale grey to dark brown filling most spaces to a lesser or greater degree and totally in scita . Hindwings paler than the forewings but with darker veins and fringes. In scita the hindwings are much darker with the veins and fringes appearing lighter. Abdomen pale or dark orange dorsally with or without a row of black spots or dashes; laterally with black spots; ventrally orange, buff-orange or buff-grey. Male genitalia: Posterior margin of eighth tergite lightly sinuate or concave. Eighth sternum with a small medial sclerite and wide and rounded lateral sclerites. Pair of well developed coremata present. Saccus moderately deep but well developed. Valva long, thin and moderately arcuate or s-shaped; with or without a medially directed triangular-like dorsolateral process arising from the dorsal edge of the valva. Juxta wide and occasionally incised basally; terminally extended into two short or long narrow extensions. Transtila arms short and weak. Uncus long, narrow, basal half noticeably constricted then widening to two small apposed lobes, and tapering to a hooked apex. Aedeagus slightly curved; vesica finely scobinate and without spines or cornuti.