Megaphloeus imparilus OPITZ nov.sp. (Figs 47, 192, 226, 300)

Holotype: ♂. Type locality: Belize, Stann Crk, Bocawina, 16 km W Dangriga, 83 m, 16.927°N, 88.397°W, 5-7-viii-2017. A second label reads: Coll. L. G. Bezark (FSCA) . Paratype: 1 specimen. Belize: District of Stann Creek, 16 km W Dangriga, 83 m, 16.927°N, 88.397°W, 5-7-VIII-2017, L. G. Bezark (WOPC).

D i a g n o s i s: The genus Megaphloeus PIC was revised in 2011 (OPITZ 2011a). This work included a key to species. Megaphloeus imparilus specimens key out to M. animosus (WOLCOTT), from which M. imparilus specimens differ by showing a more angular midelytral fascia and the antenna are more strongly sex dimorphic.

D e s c r i p t i o n: Size: Length 5.3 mm; width 2.0 mm. Form: As in Fig. 300. Color: Cranium and pronotum dark castaneous; antennae tricolorous, scape testaceous, fundus castaneous, capitulum black; pterothorax black; elytra mostly dark brown, inverted Tshaped flavotestaceous humeral macula poorly defined; legs testaceous; abdomen brown; mesoscutellum dark brown. Head: Antenna (Fig. 47) capitate, sex dimorphic, funicular antennomeres filiform, progressively shorter towards capitulum, capitular antennomeres 9 and 10 triangular, in male antennomere 11 oblong, nearly twice as long as antennomere 10; eyes large, finely facetted, eye narrower than frons (EW/FW 15/30). Thorax: Pronotum (Fig. 192) transverse; pronotal arch transversally wrinkled (PW/PL 70/55), disc deeply concave paralaterally near pronotal collar; elytral asetiferous punctures profusely distributed; (EL/EW 250/75); anterior margin of protibia with 6 spines. Abdomen: Pygidium quadrate / scutiform; aedeagus as in Fig. 226.

Variation: The available specimens are quite homogeneous, except that the last antennomere is sex-dimorphic, with the male 11 th antennomere much longer than the female 11 th antennomere.

N a t u r a l H i s t o r y: The available specimens were collected during August, at 83 m.

D i s t r i b u t i o n: ThisspeciesisknownfromBelize.

E t y m o l o g y: The trivial name, imparilus, is a Latin adjective derived from imparilis (= unequal); with reference to the sex-dimorphic condition of the antenna.