Curculio beverlyae Pelsue and Zhang, 2000

Frank W. Pelsue, Jr. & Zhang, Runzhi, 2000, A Review Of The Genus Curculio L. From China With Descriptions Of New Taxa. Part I (Coleoptera: Curculionidae: Curculioninae: Curculionini), The Coleopterists Bulletin 54 (2), pp. 125-142 : 134-136

Curculio beverlyae Pelsue and Zhang , new species

Figs. 6 , 16–17 , 27–28

Holotype. China. Kunming : male [China: Yunnan /Kunming/ 13 August 1958 / H. Li] ( IZAS)

Paratype. (1) China: male [China: Yunnan / Kunming / 13 August 1958 / H. Li] ( FWPC)

Recognition Characters. Oblong oval. Vestiture tan with testaceous macula; funicular segment one shorter than segment two, glabrous, club small, fuscopiceous. Tooth on hind femur large, wedge shaped with apex reaching posterior margin of tibia. Length of hind femur barely exceeding apex of abdomen. Clavate dirty white decumbent scales on lateral pleura of pronotum, narrower and intermixed with fuscopiceous decumbent scales on dorsum. Mesosternal intercoxal process prominent. Rostrum gradually emerging or continuous with head, thicker at base gradually narrowing toward apex.

Description. Male. Length: 5.6–6.6 mm (mean = 6.1). Width: 3.0– 3.6 mm (mean = 3.3). Head. Moderately large round; derm fuscous; punctures small with small, narrow, elongate, decumbent, ocherous scales; eyes large, round, finely faceted; frons 0.19 as broad as head across eyes, clothed with longer narrow, elongate, ocherous and a few testaceous scales; central shallow interocular fovea. Rostrum. Length: 3.2 mm, 0.53 as long as body; basely piceous to antennal insertion apically fuscopiceous; cylindrical; sides subparallel, somewhat thick to antennal insertion then gradually narrowing to apex; gradually emerging from head; three dorsal carinae from frons to antennal insertion; rather straight to antennal insertion then arced to apex; scrobe lateral; scape inserted past midpoint. Antennae. Length: Scape 1.5 mm bulb with a few ochorous scales; funicular segment one 0.36 mm; two 0.44 mm; three 0.24 mm; four 0.2 mm; five 0.24 mm; six 0.2 mm; seven 0.24 mm, club 0.48 mm; funicle 1.8 mm; scape 0.84 as long as funicle; derm fuscorufous; clothed with few narrow, elongate, decumbent, ocherous scales toward apices of each funicular segment with longer erect setae like scales; club small, compact, oval, segments one and two equal in length with velvety vestiture few erect setae. Thorax. Length: 1.5 mm. Width: 2.4 mm, 0.63 as long as broad; derm fuscous; disc narrower at base than middle, base straight, sides subparallel broadly rounded to constriction; impressed laterally; disc with small deep punctures close together; scales on lateral margin narrow, elongate, decumbent, ocherous becoming shorter and narrower dorsally, some testaceous scales intermixed with ocherous scales concentrated basolaterally forming feeble macula; base straight; mesosternal sternal intercoxal process prominent, clothed with clavate, decumbent, ocherous scales; scutellum medium, longer than broad, clothed with short, narrow, elongate, decumbent, ocherous scales; mesepimeron, mesepisternum, and metepisternum evenly clothed with clavate, decumbent, ocherous scales; procoxae clothed with clavate, ocherous scales. Elytra. Length: 3.8–4.4 mm (mean = 4.10); derm fuscous; stria narrow, shallow, punctures with short, clavate, ocherous scales; shallow declivity around scutellum; humeri prominent, rounded; intervals broad, flat clothed with mixture of clavate and narrow, elongate, decumbent, ocherous and testaceous scales; diffuse vittae of testaceous scales at midpoint, scattered testaceous scales toward apex; disc convex in lateral view; crosshatch setae short luteous with a few fuscous setae mixed. Legs. Length of hind femur 2.5–2.7 mm (mean = 2.6), exceeds apex of abdomen, tooth large, wedge shaped, somewhat robust; pro­ and mesofemoral tooth medium, acute; derm fuscopiceous; all femora clothed with elongate, narrow, decumbent, ocherous scales; pro­, meso­, and metauncus small, shorter than tarsal claw; tibia nearly straight; tarsal segment four one quarter longer than three. Abdomen. Derm piceous; sternite two longer than one behind coxal cavity; sternite one with median declivity; sternite two ascending to three; sternites three and four combined longer than five; sternite five with emarginate apex, apical declivity, one lateral tuft of ocherous setae on each side. Pygidium . Clothed with long narrow ocherous setae extending beyond apex of elytra. Genitalia. Median lobe of aedeagus 1.80 mm long, 0.50 mm wide, longer than apodeme which is 1.70 mm in length; median lobe gradually tapering to apex and arcuately curving downward ( Fig. 28 ); dorsally lateral margins of even thickness, broader basally, narrowing apically ( Fig. 27 ).

Plant Associations. Unknown.

Distribution. China, Yunnan Province, Kunming; 13 August 1958, H. Li Collector. Two specimens examined.

Remarks. This species appears to be very similar to C. conjugalis (Faust) which is found in Japan. It can be separated from that species by the male genitalia. The median lobe is longer than the apodeme in C. beverlyae the reverse being the case in C. conjugalis . The apices are abruptly tapered to a blunt point in C. conjugalis whereas gradually tapered in C. beverlyae , as seen in Morimoto (1962, table 3, figure C’).

Figures

Fig. 6. Curculio beverlyae, male. Shows the abrupt emergence of the rostrum from the head, noting the thickness at the base but still originating below the dorsal margin of the eye.

Figs. 16–17. Curculio beverlyae male, habitus, dorsal and lateral views, holotype.

Figs. 27–28. Curculio beverlyae. 27) median lobe, dorsal aspect; 28) median lobe, lateral aspect.