Curculio fordi Pelsue and Zhang, 2002

Pelsue, Frank W. & Zhang, Runzhi, 2002, A Review Of The Genus Curculio From China With Descriptions Of New Taxa. Part III. The Curculio subfenestratus Voss Group (Curculionidae: Curculioninae: Curculionini), The Coleopterists Bulletin 56 (1), pp. 1-39 : 37-38

Curculio fordi Pelsue and Zhang , new species

Figs. 57–58, 67–68, 111–113

HOLOTYPE. China. Hengdaohezi : male [ China /Helongjiang/Hengdaohezi/ 27 July 1954 / IZAS] ( IZAS).

PARATYPES (7). China. one male [ China /Inner Mongolia/ Zhemeng / August 1980 / IZAS] ( FWPC) one male [ Russia / Amur / Blagoveshensk / 06 July 1998 / Dubatolov ] one male [ Russia / Amur / Blagoveshensk / 01 June 1995 / Bezborodov ] one male [ Russia / Amur / Blagoveshensk / 16 July 1998 / Dubatolov ] one male [ Russia / Primorie Territory / Novovladimirovka / June 1965] one female [ Russia / Amur / Blagoveshensk / Lake Peschanoe / 03–05 June 1996 / Streltzov ] one female [no data]

Description Male: length: 6.0– 6.5 mm (mean = 6.2 mm, n = 7). width: 3.1–3.3 mm (mean = 3.2, n = 7). Head: medium­sized; punctures small with short, narrow, dirty white scales; ventromedian macula of clavate, dirty white scales; frons 0.26 as wide as head across eyes, clothed with narrow, elongate, dirty white scales. Rostrum: length: 3.5–4.5 mm (mean = 3.8 mm, n = 7); 0.58 as long as body; sub­cylindrical to antennal insertion, then becoming more cylindrical to apex; 3 dorsal carinae from frons to antennal insertion; almost straight to insertion of antennae then gradually arced to apex; scrobe ventral; scape inserted at midpoint. Antennae: length: scape 1.6 mm, funiculus: segment one 0.4 mm, two 0.35 mm, three 0.2 mm, four 0.2 mm, five 0.2 mm, six 0.2, seven 0.2 mm, club 0.6 mm, funicle 1.75 mm (n = 1); scape 0.86 as long as funicle; funicle clothed with narrow, elongate, white scales; club small, compact, acuminate, as long as funicular segments 5–7. Thorax: length: 1.8–2.0 mm (mean = 1.9 mm, n = 7). width: 2.3–2.5 mm (mean = 2.4 mm, n = 7); 0.79 as long as broad; disc margins broadly rounded to constriction, slightly convex in lateral view, punctures small, clothed with narrow, elongate, dirty white scales, some laterally and ventrally; base sinuate; mesosternal intercoxal process not prominent, clothed with narrow, elongate, dirty white scales; scutellum large, longer than broad, subimpressed clothed with ochroleucus scales; mesepimeron densely clothed with clavate, ochroleucus scales; mesepisternum and metepisternum clothed with narrow, elongate, dirty white scales; metasternum with lateral macula of ochroleucus scales proximal to metacoxae. Elytra: length: 3.7–4.0 mm (mean = 3.9 mm, n = 7); striae deep, with large punctures and small, narrow, elongate, dirty white scales; humeri rounded; intervals broad, flat, uniformly clothed with narrow, elongate, dirty white scales; crosshatched setae short, not prominent. Legs: length of hind femur 2.8–3.0 mm (mean = 2.9 mm, n = 7), tooth medium, acute; pro­ and mesofemoral teeth medium, but smaller than hind femoral tooth; femoral clava medium­sized; all femora clothed with narrow, elongate, dirty white scales; tibiae subsinuate, pro­ and mesouncus large longer than tarsal claw, metauncus short, small, acute. Abdomen: sternite 1 and 2 equal in length, sternite 2 ascending to 3; sternite 3 longer than 4, combined longer than 5; sternite 5 truncate apically with median depression; sternite 2 with lateral macula of narrow, elongate, ochroleucus scales, remaining sternites with dirty white scales. Pygidium : large, with elongate dirty white seta­like scales. Genitalia: median lobe of aedeagus 1.6 mm (n = 1) in length; 0.3 mm (n = 1) in width, narrower at base, gradually becoming broader towards apex, margins thin, apex squared off in dorsal view, moderately thick and straight to deflected apex in lateral view, apex strongly truncate; apodeme 1.6 mm (n = 1) in length (Figs. 111–113). Female: length: 5.4–7.2 mm (mean = 6.1 mm, n = 2); width: 2.9–3.7 mm (mean = 3.2, n = 2); Rostrum: length: 4.7–6.6 mm (mean = 5.7 mm, n = 2); 0.86 body length, evenly arced to apex; deep oval punctures, glabrous; scrobe lateral; scape inserted in basal 1/3; frons 0.23–0.27 mm (mean = 0.25, n = 2) as broad as head across eyes. Antennae: scape 1.3 mm; funiculus: segment one 0.5 mm, two 0.4 mm, three 0.25 mm, four 0.2 mm, five 0.2 mm, six 0.2 mm, seven 0.25 mm, club 0.45 mm, funicle 2.1 mm (n = 1) in length; scape 0.62 as long as funicle; club oval, compact, acuminate, as long as funicular segments 6–7. Thorax: length: 1.3–2.4 mm (mean = 1.8 mm, n = 2); width: 2.2–2.7 mm (mean = 2.4 mm, n = 2). Elytra: length: 3.2–4.4 mm (mean = 3.6 mm, n = 2) in Legs: length of hind femur 2.4–3.4 mm (mean= 2.8 mm, n = 2), tooth medium. Genitalia: not dissected.

Plant Associations. Castanea sp.

Remarks. Separated from remainder of species in the group by luteous macula on mesepimeron, metepisternum, sternite 2, and male genitalia.

Etymology. Named in honor of the senior author’s good friend Arthur Ford.