Kalohydnobius californicus Peck & Cook, 2009

Peck, Stewart B. & Cook, Joyce, 2009, Review of the Sogdini of North and Central America (Coleoptera: Leiodidae: Leiodinae) with descriptions of fourteen new species and three new genera, Zootaxa 2102 (1), pp. 1-74 : 33-35

Kalohydnobius californicus Peck & Cook , new species

( Figs. 88–93 , 94 )

Type material. Holotype: ♂ ( CMNC). UNITED STATES: California: Orange County, Rt. 74, 20 km SW

Lake Elsinore, lower San Juan picnic area, 11.III–4.IV. 1999, 430 m, S. & J. Peck, 99-87, canyon forest FIT. Paratypes (9): UNITED STATES: California: ♀ with same data as holotype ( SBPC) ; San Diego County, 2 km NE Morena Lake, Cottonwood Creek , 16–II. 5.IV.1999, 1000 m, S. & J. Peck 99-54, oak grove FIT, ♂ ( SBPC) ; Los Angeles County, Angeles National Forest, Hideaway Canyon , 31.III–14.IV.2007, Caterino & Chatzimanolis, FIT, 2♂, ♀ ( SBMN) ; same data but 16–31.III.2007, ♀ ( SBMN) ; same data but 14–28.IV.2007, ♀ ( SBMN) ; Marin County, Inverness , 1.III.1960, ♀ ( CNC) ; Santa Clara County, Silver Creek Hills, 9.V.1963, A. & A. Gillogly, ♂ ( TAMU) .

Diagnostic description. Body yellowish brown, moderately shining; antennomeres 7–10 darker, apical antennomere paler. Small species, length of pronotum + elytra = 1.9–2.1 mm (males), 1.9–2.0 mm (females). Head finely punctate with dense microsculpture of irregular lines. Pronotum broad, widest at basal one-third, sides rounded, basal angles obtuse; ratio length:width = 1:1.6; minutely punctate, some punctures joined by fine lines of microsculpture. Elytra short, ratio length:width = 1:0.8; with 9 punctate striae; stria 1 impressed in apical one-half; striae 6 and 7 do not reach apex; intervals with a single row of fine punctures and transversely striolate; uneven intervals with scattered larger punctures. Antennal club ( Fig. 88 ) moderately broad, ratio club width:length = 1:2.8; width ratio of antennomeres 7:8:9 = 1.3:1:1.5. Mandibles ( Fig. 89 ) stout, a thin plate forming inner apical margins. Labrum entire. Male profemur ( Fig. 90 ) with small tooth at middle of posterior margin; female profemur unarmed; mesofemur of both sexes unarmed; male metafemur with denticle at middle of posterior margin; female metafemur unarmed. Protibia of male and female broad in apical half; mesotibia of male strongly angulate at basal one-third, broad at apex; mesotibia of female slender, unmodified; metatibia slender, unmodified in both sexes; all tibiae of both sexes spinose on outer margins.

Male. Aedeagus ( Fig. 91 ) with median lobe broad, gently tapered to broad apex. Parameres inserted at basal one-fifth of median lobe, flat, nearly reaching apex of median lobe, apices multisetose. Small notch at basal one-third of lateral margin of each paramere. Female. Coxites ( Fig. 93 ) short, broad, with apical setae; no visible styli. Sternite 8 ( Fig. 92 ) weakly emarginate apically; anterior apophysis narrow, parallel-sided.

Distribution. The species occurs in forested habitats in the coastal mountains of central and southern California ( Fig. 94 ).

Field notes and habitats. Almost all adults were taken in flight intercept traps in seasonal mixed forests in protected canyons.

Seasonality. Adults of the species were collected in the cool-wet spring months of March (5), April (4) and May (1).

Etymology. Named with reference to the state of California, to which the species is seemingly endemic.

Figures

FIGURE 94. Known western North American localities of Kalohydnobius californicus (black dots).

FIGURES 88–93. Kalohydnobius californicus. 88. Right antenna, dorsal view. 89. Mandibles, dorsal view. 90. Male right profemur. 91. Aedeagus, dorsal view. 92. Female sternite 8, ventral view. 93. Female coxites, ventral view. Scale bar = 0.3 mm (Figs. 88–93).