A Review of the Genus Curculio from China with Descriptions of Fourteen New Species. Part IV. The Curculio sikkimensis (Heller) Group (Coleoptera: Curculionidae: Curculioninae: Curculionini)
Author
Pelsue, Frank W.
Author
Zhang, Runzhi
text
The Coleopterists Bulletin
2003
2003-09-30
57
3
311
333
http://dx.doi.org/10.1649/570
journal article
10.1649/570
1938-4394
Curculio bullabrevis
Pelsue and Zhang
,
new species
(Figs. 27–28, 57–59)
Holotype
.
China
.
Motuo
female[
China
/
Xizang
/Motuo/
2,000–2,400 m
/
14–17 October 1952
/
Y. Han
] (
IZAS
).
Description.
Female
: length:
5.5 mm
(n
¼
1). width:
2.2 mm
(n
¼
1).
Head
: Moderate-sized; punctures small, clothed with short, narrow, cinerous scales; frons 0.15 (n
¼
1) as broad as head across eyes, clothed with longer, narrow, cinerous scales; small interocular fovea.
Rostrum
: length:
4.6 mm
(n
¼
1); 0.84 as long as body; cylindrical; almost straight to abruptly deflected apex; glabrous, apuncatate except for base with few small punctures; scrobe lateral; scape inserted in basal half.
Antennae
: length: scape
1.2 mm
. funiculus: segment one
0.4 mm
, two
0.4 mm
, three
0.3 mm
, four
0.25 mm
, five
0.25 mm
, six
0.2 mm
, seven
0.2 mm
, club
0.5 mm
(n
¼
1); funicle 2.0 mm; scape 0.6 as long as funicle; club small-sized, not as long as funicular segments 5–7; scape not longer than funicular segments 1–4.
Thorax
: length:
1.3 mm
(n
¼
1). width:
1.6 mm
(n
¼
1); 0.81 as long as broad; significantly narrower than base of elytra; disc margins parallel to abrupt rounding to constriction, clothed with narrow, elongate, cinerous scales, flat in lateral view; pleuron clothed with clavate white and testaceous scales mixed; mesosternal intercoxal process not visible; scutellum small, longer than broad, clothed with cinerous scales; mesepimeron clothed with clavate testaceous scales; mesepisternum clothed with clavate cinerous with a few testaceous scales mixed; metepisternum clothed with narrow, clavate, cinerous scales; metasternum clothed with clavate cinerous scales anteriorly and testaceous scales posteriorly; procoxae clothed with cinerous scales.
Elytra
: length:
3.6 mm
(n
¼
1). striae moderately deep with short, narrow, elongate, cinerous scales; humeri prominent, acutely rounded; intervals somewhat rounded, clothed with narrow, clavate cinerous and fuscous scales; testaceous fascia past midpoint and before apex; moderately convex in lateral view; crosshatched setae not prominent.
Legs
: length hind femur
2.4 mm
(n
¼
1); pro-, meso-, and metafemoral teeth small; femora base margins narrow, moderately clavate, clothed with narrow, elongate, cinerous scales; tibiae straight, all unci small.
Abdomen
: sternite 2 longer than 1 behind coxal cavity; sternite 3 and 4 equal in length, combined longer than 5; sternite 5 with acute apex and mid apical declivity, tuft of several long, apical, seta-like scales; sternite 1 and 2 clothed with clavate testaceous scales laterally, cinerous scales medially; sternites 3–5 clothed with narrow, elongate, cinerous scales.
Pygidium
: Small
; clothed with long, narrow, seta-like, testaceous scales.
Genitalia
: median lobe
1.8 mm
(n
¼
1) in length,
0.4 mm
(n
¼
1) in width; margins evenly sclerotized, base as broad to before apex, apex tapered to extended rounded process (Fig. 57); laterally flat, thin, to deflected apex (Fig. 58); apodeme
2.2 mm
(n
¼
1) in length.
Remarks.
This species appears similar to
C. songi
n. sp.
, but can be distinguished by funicular segment 2 as long as 1 and small metafemoral tooth.
Etymology.
The specific epithet is based on the diagnostic character, mesosternal intercoxal process not prominent, ‘‘bulla’’ Latin noun for ‘‘knob’’ and ‘‘brevis’’ Latin adjective for ‘‘small.’’