Carabus (Neoplectes) titarenkoi djanoliensis, Fominykh, Dmitriy D. & Zamotajlov, Alexandr S., 2016

Fominykh, Dmitriy D. & Zamotajlov, Alexandr S., 2016, 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), Zootaxa 4179 (3), pp. 561-599: 568-569

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Carabus (Neoplectes) titarenkoi djanoliensis

subsp. nov.

Carabus (Neoplectes) titarenkoi djanoliensis   subsp. nov.

( Figs. 81–84 View FIGURES 77 – 84 , 197–202 View FIGURES 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) GoogleMaps   . Paratypes: 12♂♂, 21♀♀, same data as holotype ( ZISP, CFDD, CTAY, CZAM) GoogleMaps   .

Description. Medium-sized form ( Figs. 81–84 View FIGURES 77 – 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 View FIGURES 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 View FIGURE 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 View FIGURES 62 – 69 , 81–84 View FIGURES 77 – 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 View FIGURES 159 – 164 View FIGURES 165 – 168 , 197–202 View FIGURES 197 – 202 ); both forms are also quite different in external appearance ( Figs. 56–61 View FIGURES 56 – 61 , 81–84 View FIGURES 77 – 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.


Zoological Institute, Russian Academy of Sciences