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
Drypta
Latreille, 1796
Type
species:
Carabus emarginatus
Gmelin, 1790
(=
Carabus dentatus
P. Rossi, 1790
)
=
Desera
Dejean, 1825
(nec Hope, 1831)
Type
species:
Drypta longicollis
MacLeay, 1835
=
Deserida
Basilewsky, 1960
Type
species:
Carabus distinctus
P. Rossi, 1792
=
Dryptella
Jeannel, 1949
Type
species:
Drypta cyanella
Chaudoir, 1843
This is the nominotypical genus of the tribe; it contains around 47 species diffused in Africa, Asia,
Australia
and, very marginally, in Europe.
Liang et al. (2004)
have correctly pointed out the reasons for which
Desera
must be regarded as a synonym of
Drypta
and its long-lasting confusion with
Dendrocellus
, due to the misinterpretation of
Drypta longicollis
MacLeay.
Deserida
was erected by
Basilewsky (1960)
as a substitution name for the species near
D. distincta
, since this author regarded
Desera
as the valid name for the genus presently called
Dendrocellus
. This generic (or subgeneric) epithet has been frequently used for the pale species of
Drypta
, in which the elytra instead of being metallic are yellowish with darker margins or completely brown. This taxon has already been considered as a synonym of
Drypta
by
Habu (1967)
and we completely agree with this point of view. In our opinion the characters that should allow separation of this taxon from
Drypta
are inconsistent: the apical margin of elytra obliquely truncate instead of perpendicular to the suture is a character at the same time very variable and difficult to appreciate. Beyond that, we could not find any other reliable differentiating character. Even the shape of the body, shorter and stouter according to
Jeannel (1949)
, is almost identical for example in the
type
species of
Drypta
(
D. dentata
) and of
Deserida
(
D. distincta
), while other species belonging to both groups are much more slender and elongate.
Dryptella
is a subgenus described by
Jeannel (1949)
for the majority of the African species of
Drypta
, but also in this case the characters pointed out (shape more slender and elongate, occurrence of a carina on interval 9) are very doubtful and difficult to observe, sometimes almost illusionary, at least in our opinion widely insufficient for a subgeneric distinction.
Dryptella
has already been regarded as synonym of
Drypta
by
Habu (1967)
and we agree with this position.
The unique combination of characters distinguishing
Drypta
from the other genera of the tribe is: pronotal bead absent or rudimental (fig. 9); punctuation on head and pronotum dense, more or less regular, the punctures usually distinct from each other, not confluent; pronotum very feebly constricted towards base; elytral microsculpture well developed; elytral pubescence dense, usually arranged in two-three more or less regular rows; number of scutellar pores varied from 1 to 4, but most frequently 1; intervals flat or slightly convex; tarsal claws thick, strongly curved, and smooth on inner side; two or three evident setae on outer side of stylomere (
fig. 7
).