Lady Beetles (Coleoptera: Coccinellidae) From Chinese Hemlocks Infested With The Hemlock Woolly Adelgid, Adelges Tsugae Annand (Homoptera: Adelgidae)
Author
Yu, Guoyue
Author
Montgomery, Michael E.
Author
Yao, Defu
text
The Coleopterists Bulletin
2000
2000-06-30
54
2
154
199
http://dx.doi.org/10.1649/0010-065x(2000)054[0154:lbccfc]2.0.co;2
journal article
10.1649/0010-065X(2000)054[0154:LBCCFC]2.0.CO;2
Scymnus
(
Pullus
)
baoxingensis
Yu
,
new species
(
Fig. 13
)
Description.
Male. Length
1.65 mm
, width
1.10 mm
. Form elongate oval with sides nearly parallel at middle, dorsum moderately convex. Head yellowish brown. Pronotum reddish brown with slightly lighter lateral parts. Elytra black, apical margin brown, bor der between colors indistinct. Underside brown, prosternite and meso and metathoraces black. Legs brown, middle and hind coxae black. Interocular distance about 2/5 head width. Innerocular margins arcuate, divergent anteriorly. Frons flat, punctation very fine, dense. Antenna 11segmented proportions as illustrated (
Fig. 13k
). Maxillary palpus terminal segment distinctly divergent distally, distal side strongly oblique. Pronotum punctation similar to head. Elytral punctation slightly coarser, hairs arranged in weak Sform. Prosternal carinae slightly convergent anteriorly. Postcoxal line of first abdominal sternite complete, slightly arcuate, reaching about 2/3 length of the sternite; enclosed area finely punctate, posterior 1/2 smooth. Hind margin of fifth abdominal sternite evenly arcuate; sixth sternite apex slightly emarginate. Genitalia: Sipho (
Fig. 13a
) relatively slender; siphonal capsule with stout outer process, slightly more slender inner process; apex of sipho simple, surrounded by membrane, without distinct appendix. Tegmen (
Fig. 13b, c
, and i) slender; median piece of tegmen nearly parallelsided for basal 1/4, then slightly divergent to 1/3 from apex, then converging to sharp point in ventral aspect. In lateral aspect, median piece thickest at base, gradually converging to tip. Lateral lobes of tegmen clublike, distinctly shorter than median piece.
Fig. 14.
Scymnus
(
Pullus
)
gucheng
Yu
,
n. sp.
a
) sipho;
b, i
) tegmen, lateral;
c
) ninth sternite of Ƌ;
d
) first abdominal sternite;
e
) sixth abdominal sternite of Ƌ;
f
) median piece, ventral;
g
) apex of sipho;
h
) maxillary palpus;
j
) antenna;
k
) outline of the body;
l
) scale for a–e = 0.25 mm; m. scale for f–j = 0.1 mm.
Female. Length
1.90 mm
, width
1.20 mm
. Externally similar to male except for brown head, arcuate hind margin of sixth sternite. Receptaculum seminis as illustrated (
Fig.
13 m
).
Distribution.
China
(
Sichuan
).
Type Series.
Holotype
: (Ƌ),
Sichuan
:
Baoxing
:
Qiaoqi
(
30.3 N
,
102.8 E
),
V1996
,
Guo H.
et al.
leg. (
BAAF
)
.
Paratype
: (
1 ♀
, same data as holotype) (
CAF
)
.
Etymology.
The specific name refers to the
type
locality.
Remarks.
The new species is similar to
S.
(
P.
)
ancontophyllus
Ren and Pang 1993
, but the new species has a smaller tegmen and a median piece with the base nearly parallel sided.