Further contribution to the knowledge of Georgian species of the Carabus Linnaeus, 1758 subgenus Neoplectes Reitter, 1885, with description of a new subspecies of C. titarenkoi Zamotajlov & Fominykh, 2014 (Coleoptera: Carabidae: Carabini)
Author
Fominykh, Dmitriy D.
Author
Zamotajlov, Alexandr S.
text
Zootaxa
2016
4179
3
561
599
journal article
37925
10.11646/zootaxa.4179.3.10
3aab38df-01c7-4489-875f-31c510b24e19
1175-5326
258837
0D339758-0B56-4CEB-A0CC-567E1321F4B8
Carabus (Neoplectes) titarenkoi djanoliensis
subsp. nov.
(
Figs. 81–84
,
197–202
)
Type
material.
Holotype
:
♂
,
Georgia
,
Lechkhumi
, right bank of
Dzhanoli river
near
Chkhumi
vill., E slopes of
Mushulda Mt.
,
526 m
,
N 42°35'
/
E42°40'
,
pitfall traps
, 16.04-
13.06.2015
(
D. Fominykh
&
A. Zubov
) (
ZISP
)
.
Paratypes
:
12♂♂
,
21♀♀
, same data as holotype (
ZISP
,
CFDD
,
CTAY
,
CZAM
)
.
Description.
Medium-sized form (
Figs. 81–84
), body length 31.5–37.0 (34.3) mm, males 31.4–32.7 (32.1) mm, females 33.4–36.8 (35.1) mm long. Underside black, dorsum usually with bright metallic lustre, bronze, dark blue, or dark violet. Body slender. Head broad, as in the other
Neoplectes
-forms. Pronotum faintly constricted posteriorly, hind angles faintly protruding backwards, PW/HW=1.45–1.78 (1.62)2 [1.22–1.60 (1.41) in the nomynotypical subspecies], PW/PL=1.29–1.98 (1.64) [1.20–1.54 (1.24) in the nomynotypical subspecies], PW/ PB=1.03–1.27 (1.15) [1.02–1.28 (1.15) in the nomynotypical subspecies], surface slightly rugous. Elytra elongate, faintly divergent posteriorly, EW/PW=1.20–1.41 (1.31) [1.34–1.65 (1.50) in the nomynotypical subspecies], EL/ EW=1.57–1.81 (1.69) [1.45–1.90 (1.68) in the nomynotypical subspecies], more convex and less ovate in males and somewhat depressed and more ovate in females; elytral sculpture smoother in males, links of its intervals shorter and less pronounced than in females; in females sculpture coarser, intervals more pronounced, this resulting in the more matte surface appearance.
Aedeagus large, broadened apically, of characteristic for the subgenus
Neoplectes
shape, endophallus (
Figs. 197–202
) with small ventromedial lobe and ventrobasal projection and large, protruding ventroapical lobe, possesses only minor differences from the nomynotypical subspecies.
Differential diagnosis and remarks.
The new subspecies is distinguishable externally from the nomynotypical one by a larger body size, more slender and less ovate body, and somewhat broader head. Results of the discriminant analysis showed consistent differences from the known populations of the nomynotypical subspecies (
Fig. 203
). Aedeagus somewhat stronger inflated apically (viewed laterally), endophallus with comparatively larger ventroapical and dorsoventral lobes, fainter twisted to the right.
Habitually resembles
C. szekelyi
from the Nakerala mountains, but has a more slender body appearance (
Figs. 66–69
,
81–84
) and different structure of endophallus. The shape of the male genitalia resembles that of
C. prunierianus
, which inhabits the eastern part of the subgenus’ distribution range, but is distinguishable by several 2. Mean values are given in parentheses.
details (
Figs. 159–168
,
197–202
); both forms are also quite different in external appearance (
Figs. 56–61
,
81–84
).
C. titarenkoi djanoliensis
subsp. nov.
populates the right bank of the Tskhenis-Tskhali river, where species of the
mellyi
-group are usually distributed, but differs from them in a number of endophallic characters, already mentioned above. The following key can be used to identify the known
C. titarenkoi
subspecies:
A. Larger, body length above
33 mm
, body more slender, elytra less ovate, endophallus fainter twisted rightwards, its ventroapical lobe somewhat larger; inhabits the right bank of Dzhanoli river....................
C. titarenkoi djanoliensis
subsp. nov.
B. Smaller, body more robust, elytra stronger ovate, endophallus stronger twisted rightwards, its ventroapical lobe somewhat smaller; inhabits Khvamli mountains Mass..................... ..
C. titarenkoi titarenkoi
Zamotajlov & Fominykh, 2014
Distribution.
C. titarenkoi djanoliensis
subsp. nov.
is distributed along the right bank of the Tskhenis-Tskhali river, in the Dzhanoli river valley near Chkhumi village.
Habitat.
Boxwood forest sites at karstic landforms at
526–
600 m
. The adults are active from April to July.
Carabus (Tribax) fossiger
Chaudoir, 1877
,
C. (Sphodristocarabus) armeniacus
Mannerheim, 1830
, and
C. (Megodontus) septemcarinatus
Motschulsky, 1840
also occur together with this subspecies.
Etymology.
The subspecific epithet refers to the name of the river Dzhanoli, the
type
locality of this subspecies.