Muisca omma OPITZ nov.sp. (Figs 33, 64, 96, 111, 141)

Holotype: ♀. Leticia, Amazonas, 700', Colombia, July 10, 1970, H. A. Howden (CMNC).

Paratypes: 14 specimens. Colombia: Departamento de Amazonas, Leticia, 10-VII- 1970, 700 feet, H. A. Howden (WOPC, 1). Ecuador: Provincia de Orellana, 1km S Okone Gare Camp,

Reserva Etnica Waorani, 20-I-1994, 220- 250 m, T. L. Erwin (USNM, 1), idem, 20-VI-1994, 220- 250 m, T. L. Erwin (USNM, 1), idem, 4-X-1994, 220- 250 m, T. L. Erwin (USNM, 2; WOPC, 1), idem, 7-X-1995, 220- 250 m, T. L. Erwin (USNM, 1; WOPC, 2), idem, 9-X-1995, 220- 250 m, T. L. Erwin (USNM, 2; WOPC, 1) ; Provincia de Sucumbío, 9 km E Lumbaqui, 7-8-VIII-1998, W. Opitz (WOPC, 1). " Amazonas " Bates (MNHN, 1) .

D i a g n o s i s: Within the M. mestolinea species group, only specimens of M. omma have the elytral disc mostly dark brown.

D e s c r i p t i o n: Size: Length 4.0 mm; width 1.5 mm. Form: As in Fig. 141. Color: Light castaneous, except pronotal disk with 2 brown punctiform spots and elytra bicolorous, elytral disc dark brown in basal 2/3 rd, except each elytron with testaceous spot stemming from epipleural margin, distal 1/3 rd of elytral disc testaceous. Head: Funicular antennomeres subfiliform, capitular antennomeres 9 and 10 triangular (Fig. 33), antennomere 11 obovate; frons wider than width of eye (EW /FW 18/27). Thorax: Pronotum (Fig. 64) slightly oblong (PW /PL 65/70), side margin with well-developed tubercle, disc widely subglabrous at middle; elytral asetiferous punctation striate, punctures extend to elytral apical 3/4 th at sides and absent for most of region near sutural margin (EL /EW 185/50). Abdomen: Pygidium scutiform; aedeagus, phallic apex as in Fig. 111.

V a r i a t i o n: Size: Length 4.0- 5.5 mm; width 1.5-1.8 mm. Other than body size the available beetles are quite homogeneous.

N a t u r a l h i s t o r y: The available specimens were collected in January, June, July, and October, at altitudes ranging from 214 to 250 m.

E t y m o l o g y: The specific epithet, omma (= eye), is a Greek noun. I refer to the spots on the pronotal disc.

D i s t r i b u t i o n (Fig. 96): This species is known from Colombia and Ecuador.