Platynoptera potaro OPITZ nov.sp. (Figs 40, 167, 356)

Holotype: ♀. Type locality: Kaieteur, BG (Guyana), 6.VIII 1911. A second label reads: Guyana, Kaieteur Falls, Potaro river (FSCA).

D i a g n o s i s: The available member of this species is superficially similar to specimens of Platynoptera gratiosa (PIC) from which it differs by showing a significantly wider pronotum. The genus Platynoptera SPINOLA was revised by OPITZ (2015b).

D e s c r i p t i o n: Size: Length 10.5 mm; width 4.0 mm. Form: As in Fig. 356. Color: Cranium bicolorous, clypeus and venter testaceous; frons and epicranium black except epicranium with narrow testaceous line at middle, pronotal disc and lower sides black; pterothorax and abdomen brown; elytra mostly black, with testaceous marking on humeral angle and with testaceous fascia at discal middle that expands along epipleural margin and does not reach sutural margin; legs mostly piceous, basal 1/2 of femora testaceous. Head: Eyes large, coarsely facetted, eye wider than frons (EW/FW 45/27); funicular antennomeres (Fig. 40) transverse and very setose; capitular antennomeres 9 and 10 long rectangulate, antennomere 11 very oblong ovate. Thorax: Pronotum (Fig. 167) oblong; pronotum shallow (PW/PL 120/130), disc finely punctate; elytral asetife- rous punctures minute and profusely distributed, elytra slightly flared in anterior 1/2 (EL/EW 510/130). Abdomen: Pygidium scutiform.

N a t u r a l H i s t o r y: The holotype was collected in August.

D i s t r i b u t i o n: This species is known from Guyana.

E t y m o l o g y: The trivial name, potaro, is a noun in apposition and refers to the type locality.