Laricobius jizu Háva, 2010a

Leschen, Richard A. B., 2011, World review of Laricobius (Coleoptera: Derodontidae), Zootaxa 2908, pp. 1-44 : 13

7. Laricobius jizu Háva, 2010a

(figs 8, 38)

Diagnosis. Body unicolored. Head dark; ocelli present. Prothorax quadrate without well developed lateral carina, sides not strongly explanate. Pronotum dark; posterior tooth absent. Scutellum dark. Surface of elytra incurvate; elytral punctures posteriorly confluent. Epipleura dark. Ventrites dark. Femora light. Tibiae light. Aedeagus with medium lobe acute.

Description. Length 2.40 mm. Body unicolored chocolate brown; antenna with AI dark tan, funicle light tan, club dark tan; palpi light tan; legs unicolored tan. Head with ocelli; u-shaped furrow absent; interocular distance about 2x the width of the eye; macropunctures ovate and deeply impressed, scattered and present at center of frons; micropunctures fine; setation short, decumbent, length about 1/3 the width of the eye. Antenna with length of A3 distinctly shorter than A4, ratios 2.0:2.0:1.0:1.4:1.6:1.2:1.6:1.2:1.8:2.0:2.4; A11 strongly asymmetrical. Prothorax quadrate and convex, widest at middle, sides sinuate; about 0.8 x as long as wide (pronotal length/greatest pronotal width = 0.8); depth = 0.5 mm; pronotum not laterally explanate, lateral carina poorly developed; anterior angle acute and deflected, forming a short tooth (the angle formed between the anterior margin and lateral carina, excluding the tooth, is about 90°); posterior angle indistinct and broadly rounded and without a short tooth; anterior foveae visible only in lateral view, posterior foveae visible in dorsal view; macropunctures ovate, deep, and wellseparated, micropunctures fine; setae short, decumbent and about 1/3 to 1/2 the width of eye. Elytra about 1.43 x as long as wide (elytral length/greatest elytral width = 1.43) and 2.8 x as long as pronotum (elytral length/pronotal length = 2.80); surface incurvate at basal third; macropunctures, especially of striae 1–4, coalescing posteriorly to form grooves, separated by an average of ½ of a puncture diameter; micropunctures fine; microsculpture not visible; setae suberect, short, about 1/3 length of the eye. Aedeagus with phallobase slightly transverse and rectangular, about 2/3 the length of the median lobe; median lobe projecting significantly beyond apices of parameres, apex acute and triangulate with a dorsal carina; parameres broad and apically blunt, and anvil-shaped with laterally directed tooth, subapical setae present and moderately elongate. Spiculum gastrale apically broad.

Comments. Laricobius jizu can be distinguished from the similar-looking species L. daliensis and L. loebli by the unicolored, tan legs. This species is known from a single male specimen. The genitalia were drawn from the carded specimen and the width of the median lobe, presence of median carina, the placement of ostium and presence of internal subapical ridge were not observed.

Hosts. Plant: Tsuga .

Distribution. CHINA: Sichuan, Yunnan.

Type material examined. HOLOTYPE ( NHMB): YUNNAN, 30 May–3Jun JIZU MTS., 1983 25.58N 100.21E, Bolm lgt., 2800/ HOLOTYPE 3 Laricobius jizu sp. n. J. Háva det. 2009 (red label with narrow black bor- der).

Additional material examined. CHINA Sichuan, Goudingshan Danba, 19 Oct 2006, Lu, W H, from hemlock ( IZAS).