Cephennium mariposae Hopp & Caterino 2009

Description. Length: 0.836 mm; pronotal width: 0.380 mm; elytral width: 0.437 mm. Body broad, ovate, slightly convex, testaceous, evenly densely pubescent, pubescence golden, slender, moderate in length (Fig. 1C). Head small, deflexed, sparsely pubescent, not narrowing anteriorly from antennal insertions; frons flat; four ommatidia present on each side of head. Antenna setose, antennomere I and II longer than broad, antennomeres III-VI quadrate and smaller than antennomeres II and VII, antennomere VIII smaller than antennomeres VII and IX, antennomeres IX-XI gradually clavate forming a loose club. Pronotum densely pubescent, broadest between middle and anterior third, disc convex medially and weakly flattened near each posterior angle; anterior margin not visible from above; anterior and posterior margin lacking marginal bead; marginal bead complete laterally, gradually widening towards base; lateral edge broadly rounded to posterior third, then evenly to base (Fig. 1C). Hypomeron smooth, sparsely setose towards upper quarter and along outside (lateral) edge; hypomeral bead anterolaterad procoxae sinuate. Prosternum without nodules anterolaterad procoxal cavities (Fig. 2C). Elytra impunctate, as pubescent as pronotum, covering all abdominal segments, weakly truncate at apex; elytral suture flat; elytral striae absent; basomedial fovea present on each elytron, fovea small, with moderately dense inwardly directed setae (Figs. 1C, 3C). Humeral angles of elytron raised, dorsally flattened (plateau-like), apically rounded, slender, moderately curving posterad around anterolateral angles (Fig. 3C). Scutellum roundly triangular, without setae (Fig. 3C). Mesosternal keel setose with indentation around each seta, apex not divergent (Fig. 2B). Metathoracic wings vestigial. Femora strongly clavate in distal half, tibiae expanded and becoming more densely setose towards distal half. Six visible abdominal sternites (fusion between ventrites V and VI). Aedeagus not studied.
Female. Identical to male.

Distribution. This species is only known from Mariposa in Mariposa County, CA (Fig. 6).