Cephennium grandarboreum Hopp & Caterino 2009

Description. Male. Length: 0.988–1.121 mm; pronotal width: 0.418–0.437 mm; elytral width: 0.456–0.475 mm. Body broad, ovate, slightly convex, rufo-testaceous to amber yellow, evenly densely pubescent, pubescence golden, slender, long (Fig. 1D). Head small, deflexed moderately pubescent, weakly narrowing anteriorly from antennal insertions; eyes absent. 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 very 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 weakly sinuate at base (Fig. 1D). Hypomeron smooth, sparsely setose towards upper quarter and along outside (lateral) edge, hypomeral bead anterolaterad procoxae with small knob at apex. Prosternum with small, weakly produced egg-shaped nodules anterolaterad procoxal cavities (Fig. 2D). 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 large, deep, with dense inwardly directed setae (Fig. 1D, 3D). Humeral angle of elytron raised laterad scutellum to humeral angle, humeral plateau slender, dorsally flattened, apically rounded; apex reaching posterad past midline of elytral fovea (Fig. 3D). Scutellum roundly triangular, with two setae (Fig. 3D). Mesosternal keel setose, texture appearing as fish scales anteriorly, abruptly smooth and impunctate near mesometasternal suture, apex strongly bifid and divergent, posterior projections long (Fig. 2D). Metathoracic wings vestigial. Femora strongly clavate in distal half, tibiae expanded and becoming more densely setose towards distal half. Five visible abdominal sternites (sometimes appearing as six due to weak fusion between ventrites V and VI). Aedeagus with median lobe bulbous, heavily sclerotized, median dorsal projection coming to point at apex (triangular), reaching past apical collar; apical collar with dense setae surrounding opening; dorsal parameres slender, longer than median lobe but not extending past apical collar, with lateral subapical setae on each side; apical digiform process extending past apical collar, bent ventrad near apex (Fig. 5C).
Female. Identical to male.

Distribution. This species is known from a few localities near Big Sur, Monterey County, CA (Fig. 6).