Taxonomic notes on the tribe Dryptini Bonelli, 1810 with description of a new genus and species from China (Coleoptera: Carabidae: Dryptini)
Author
Sciaky, Riccardo
Author
Anichtchenko, Alexander
text
Zootaxa
2020
2020-02-10
4731
4
522
530
journal article
24095
10.11646/zootaxa.4731.4.5
93d3ab00-6496-442a-953f-700aaa938c5d
1175-5326
3661980
47B975A5-547D-470E-B94E-05B8128C1A69
Dendrocellus
Schmidt-Goebel, 1846
Type
species:
Dendrocellus discolor
Schmidt-Goebel, 1846
(=
Desera nepalensis
Hope, 1831
)=
Desera
Hope, 1831
(nec Dejean, 1825)
Type
species:
Desera nepalensis
Hope, 1831
Bousquet (2002)
and
Liang et al. (2004)
have correctly reconstructed the complex nomenclatorial history of this genus, reaching the conclusion that its valid generic name is
Dendrocellus
Schmidt-Goebel, 1846
, instead of
Desera
Dejean, 1825
, as it was frequently considered previously. We only observe that back in 1949 Jeannel already wrote: “Les
Dendrocellus
Schm.
-Goeb. (
type
:
discolor
Schm.
-Goeb.,=
nepalensis
Hope
) sont généralement classés à tort sous le nom de
Desera
. … Malgré leurs ongles tarsaux pectinés, ils sont très voisins des
Drypta
s. str.
” (
Jeannel, 1949
). So, it seems the french author had already reached the same conclusions.
This genus, recently revised by
Liang & Kavanaugh (2007)
, contains 22 species occuring in Africa, Asia and
Australia
. Systematically it is extremely close to
Drypta
, differing only in its tarsal claws pectinate instead of smooth. The genitalic characters of both sexes are the same, the external resemblance among members of the two genera is sometimes puzzling and a few species of
Dendrocellus
show very slight tarsal pectination, sometimes leaving a doubt on their generic pertinence; only a comparative study of all the characters of the species belonging to the two genera will allow to decide whether they can be really maintained as separate genera. Already in 1968 Darlington observed: “
Desera
differs from
Drypta
only
in having pectinate tarsal claws. A modern revision of the species is needed to show whether both genera are really monophyletic and distinct” (
Darlington, 1968
, p. 218).
The unique combination of characters distinguishing this genus from the others of the tribe is: pronotal bead absent or very rudimental (fig. 10); punctuation on head and pronotum dense, regular, the punctures usually well distinct from each other; pronotum very feebly constricted towards base; elytral microsculpture well developed; elytral pubescence dense, usually arranged in two-three more or less regular rows; scutellar pore constantly single; intervals flat or slightly convex; tarsal claws slender, more or less pectinate on inner side; two to five evident setae on outer side of stylomere (
fig. 8
).