Curculio simius spretus (Heller)

Frank W. Pelsue, Jr. & Zhang, Runzhi, 2000, A Review Of The Curculio From China With Descriptions Of New Taxa. Part II. The Curculio Alboscutellatus Group (Curculionidae: Curculioninae: Cyrculionini), The Coleopterists Bulletin 54 (4), pp. 467-496 : 475-476

Curculio simius spretus (Heller)

Figs. 11–12 , 49–53

Balaninus simius Faust, 1898: 300 .

Balaninus simius spretus Heller, 1927: 197 .

Recognition Characters. Elongate oval; derm fuscorufous; elytra with macular fascia at midpoint, of broad, clavate, cretaceous scales on intervals 2, 3, 7, 8, and 9; pronotum with basocentral triangular macula of clavate, cretaceous, scales with 2 small basolateral maculae of clavate, cretaceous scales; hind femoral tooth large, acute, with distal keel sometimes, with indication of dentition; mesosternal intercoxal process feebly prominent.

Description. Male: Length: 3.7–4.6 mm (mean = 4.1). Width: 1.9–2.3 mm (mean = 2.16) Head: Medium­sized, moderately convex; broad eyes, finely faceted; punctures small, with small, narrow, elongate, dirty, white scales; anteroventral macula of short, clavate, cretaceous scales. Frons, 0.15 as wide as head across eyes; with few medium, narrow, elongate, testaceous scales; with small interocular fovea. Rostrum: Length 2.2– 2.7 mm (mean = 2.42); 0.59 as long as body; derm piceous to fuscorufous, usually darker basally, becoming lighter toward apex; robustly cylindrical, broad at base, slightly curving from base to insertion of scape, then tapering with broader arc to slightly expanded apex; 3 middorsal carinae; punctures oval, deep between carinae; scrobe ventral; scape inserted in apical half. Antennae: Length: Scape 1.0– 1.1 mm (mean = 1.05); Funiculus: segment one 0.25 mm, two 0.2 mm, three 0.15 mm, four 0.1 mm, five 0.1 mm, six 0.1 mm, seven 0.125 mm, club 0.45 mm. Funicle 1.1 mm; scape as long as funicle; clothed with narrow, elongate, cretaceous scales and some semierect, testaceous scales; club small, oval, compact, as long as funicular segments 4–7. Thorax: Length: 1.1–1.5 mm (mean = 1.34); Width: 1.4–1.8 mm (mean = 1.62); 0.7 as long as broad; margins dorsally angle toward constriction, broadly rounded; disc convex in lateral view, lacking median longitudinal carina, with small shallow punctures and narrow, elongate, testaceous and some larger, longer, broader, white scales; base with median triangular macula of clavate, cretaceous scales anterior to scutellum, with small macula of cretaceous scales on basolateral angle, anterior to elytral humeri; ventromedially with macula of short, broad, clavate, cretaceous scales; pleuron punctures slit­like with small, narrow, elongate, testaceous, with some bifid white scales; mesosternal intercoxal process feebly prominent, clothed with narrow, elongate, white scales; scutellum large, longer than broad, densely clothed with cretaceous scales; mesepimeron densely clothed with clavate, cretaceous scales; mesepisternum not as densely clothed as mesepimeron with clavate, cretaceous scales; metepisternum clothed with small, narrow, white scales, with macula of larger, broader, clavate, cretaceous scales at distal angle; base of metasternum emarginate with short median sulcus at apex. Elytra: Length: 2.2–2.5 mm (mean = 2.38). Striae broad, deep, with short, testaceous scales; moderate scutellar declivity; humeri feebly prominent, rounded; intervals broad, flat, clothed with short, narrow, elongate, testaceous and scattered longer, broader, cretaceous scales; midway with macular fascia of broad, clavate, cretaceous scales on intervals 2, 3, 7, 8, and 9; interval 1 with erect, long, piceous, crosshatched scales in posterior third to apex. Legs: Length of hind femur 1.9–2.1 mm (mean = 2.0) tooth large­sized, acute, with keel distad to tooth sometimes with accessory dentition; pro­, and mesofemur with medium sized tooth; femoral derm piceous basally, club rubiginous with distal knee piceous, clothed with narrow, elongate, white scales from base to club, with testaceous scales on club; hind tibiae straight, clothed with white scales: pro­ and mesouncus large, longer than tarsal claw, metauncus lacking, reduced to broad truncate ridge. Abdomen: Derm fuscous; sternite 2 longer than 1 behind coxal cavities; sternite 1 with broad shallow median declivity, with median vitta of white scales; sternite 2 ascending to 3, not as long as 3 and 4 combined; sternite 5 almost as long as 3 and 4 combined, with truncated apex and 2 simple, elongate, erect white seta; sternites 1 and 2 clothed with short, broad, cretaceous scales laterally, centrally scales narrower as on sternites 3–5. Pygidium: Prominent , large­sized with narrow, elongate, white seta­like scales. Genitalia: Median lobe of aedeagus 0.8 mm in length, 0.25 mm in width; dorsally, with thin margins for three fourths of length then narrows slightly to arced apex, which is angular to a rather blunt point, laterally rather thick, gradually arced to abrupt curved apex; apodeme 0.9 in length ( Figs. 50–52 ).

Female: Length: 4.0 mm. Width: 2.1 mm. Frons: 0.20 as wide as head across eyes. Rostrum: Length 2.7 mm. Legs: pro­ and mesofemoral tooth moderately acute; pro­ and mesouncus large, metauncus moderate sized. Spermatheca, ramus broadly rounded, oblique; collum shelf­like tapered into cornu; cornu thick, broadly curved to bluntly tapered apex ( Fig. 53 ).

Distribution. China: Fukien (Fujiun) Province, Foochow (Fezhou), July 1926, C. W. Kellogg; Hong San, SE Kiangschi, 27 June 1936, J. L. Gressitt; Mokassan, Chekiang, August 1929, Mrs. Dora E. Wright; Fukien (Fujian) Province, Sangang, F. Jiang; Jiangxi Province, Guling; Fukien (Fujian) Province, Gogan, 14 May 1965. Taiwan: Koshun, 10 August 1934, J. L. Gressitt. Nine specimens examined.

Figures

Figs. 7–12. 7–8) Curculio krissiae male, dorsal and lateral habitus, holotype; 9–10) C. alboscutellatus male, dorsal and lateral habitus; 11–12) C. simius spretus male, dorsal and lateral habitus.

Figs. 47–58. Curculio alboscutellatus 47) median lobe, dorsal aspect; 48) median lobe, lateral aspect; 49) median lobe, apex. Figs. 50–53. C. simius spretus 50) median lobe, dorsal aspect; 51) median lobe lateral aspect; 52) median lobe, apex; 53) spermatheca, lateral aspect. Figs. 54–56. C. latusrostris 54) median lobe, dorsal aspect; 55) median lobe, lateral aspect; 56) spermatheca, lateral aspect. Figs. 57–58. C. shopfneri 57) median lobe, dorsal aspect; 58) median lobe, lateral aspect.