The first fossil Cydnidae (Hemiptera: Pentatomoidea) from the Late Mesozoic of China
Author
Yao, Yunzhi
Author
Cai, Wanzhi
Author
Ren, Dong
text
Zootaxa
2007
1388
59
68
journal article
10.5281/zenodo.175165
dbef60eb-496c-4485-8d7c-ac4700340e1d
11755326
175165
Genus
Orienicydnus
Yao, Cai & Ren
, gen. nov.
Type
species.
Orienicydnus hongi
Yao, Cai & Ren
,
sp. nov.
Diagnosis:
Body oval, dorsum of head, pronotum, scutellum, and corium with long dense setae. Head semicircular, wider than long, subequal to pronotum in length, anterior margin with 9 primary setae; rostrum arising from apex of head, extending to posterior margin of pronotum, 4segmented, segments subequal in thickness, first longest, basal 2/3 concealed between bucculae, second subequal to third, fourth distinctly longer than third; eyes moderately sized, subtriangular, contiguous to anterior margin of pronotum. Pronotum trapezoidal, strongly transverse, anterior angles bulging forward, without collar; femora very stout, distinctly thicker than tibiae, tibiae with dense and stout spines, tarsi 3segmented, tarsomeres subequal in thickness, first shortest, second nearly as long as third, mid and hind coxae narrowly separated, mid and hind coxae and trochanters rounded triangular, fore and mid femora subequal to corresponding tibiae in length, hind leg longer than mid leg, hind femur distinctly shorter than hind tibia. Abdomen wider than pronotum; ovipositor long, not projecting beyond last paratergites, extending through last two abdominal segments.
Distribution.
China
.
Etymology:
The generic name is a combination of the Latin
oriens
(“orient”) and
Cydnus
(the
type
genus of
Cydnidae
).
FIGURE 5.
Cilicydnus robustispinus
gen.
&
sp. nov.
Paratype, Ψ, CNUHELB2006299. Scale bar = 1 mm.
Remarks:
This new genus is similar to
Cilicydnus
in dorsum of head, pronotum, scutellum, and corium having long dense setae, but
Orienicydnus
can be easily distinguished from
Cilicydnus
by head subequal to pronotum in length, anterior margin of head with 9 primary setae (vs. head shorter than pronotum, without primary seta); rostrum not extending to posterior margin of pronotum, rostral segments subequal in thickness, fourth segment distinctly longer than third (vs. rostrum extending beyond posterior margin of pronotum, rostral segments differing in thickness, third segment subequal to fourth); eyes subtriangular, contiguous to anterior margin of pronotum (vs. eyes round, touching anterior margin of pronotum), and second tarsomere subequal to third (vs. shorter than third).