Isoforma fritilla OPITZ nov. sp.

(Figs 70, 155, 175)

Holotype: ♀. Piste de Belizon pk 12, 1 Marz 1987, Guyane (French Guiana), piégeage lumineux, Henri Cevaer (FSCA).

Diagnosis: The holotype has two testaceous fascias on the elytral disc. To date, this is unique in the genus.

Description: Size: Length 15.0 mm; width 7.0 mm. Form: As in Fig. 155. Color: Cranium mostly testaceous, epicranium and venter brown; pronotum mostly black, upper sides of disc testaceous; elytral disc mostly black, with basal and medial testaceous fasciae. Head: Antennal capitulum very long (Fig. 70), each capitular antennomere longer than funicle; antennal carina very prominent; EW/FW 25/35. Thorax: Pronotal anterior margin linear, not projected at middle; side margins of disc rounded at middle; PW/PL 108/85; elytra conspicuously flared; discal carinae faintly developed; EL/EW 400/110. Abdomen: Female pygidium not incised at distal margin.

Natural history: The holotype was collected in March.

Distribution (Fig. 175): Known only from the type locality.

Etymology: The trivial name fritilla is a Latin adjective derived from fritillus (= spotted). I refer to the black macula on the elytral disc.