Remyella raskae S. Ćurčić & B. Ćurčić, 2008

Ćurčić, Srećko, Vrbica, Maja, Kocić, Korana, Gojšina, Vukašin, Vranić, Sofija & Vesović, Nikola, 2025, Remyella spanovicae Ćurčić, Vrbica & Vesović sp. nov., a new troglobitic leiodid beetle (Coleoptera: Leiodidae: Leptodirini) from southwestern Serbia, European Journal of Taxonomy 997, pp. 289-307 : 301-302

Remyella raskae S. Ćurčić & B. Ćurčić, 2008

Figs 1 , 6 ; Table 3

Type material

Holotype

SERBIA • ♂; southwestern Serbia, Pešter Plateau, city of Novi Pazar, Pećina na Vrelu Raške Cave ; 23 Aug. 2005; Srećko Ćurčić leg.; CBSE.

Paratypes

SERBIA • 5 ♂♂, 4 ♀♀; same data as for holotype; Srećko Ćurčić and Božidar Ćurčić leg.; CBSE .

Other material examined

SERBIA • 1 ♂; same data as for holotype; 11 May 2016; Đorđe Marković leg.; IZFB .

Molecular and phylogenetic analyses

Phylogenetic analysis of the barcoding region of the taxa of Remyella revealed five distinct clades corresponding to five species with evolutionary divergences between 4.2 and 12.0% ( Fig. 6 ). A single sequence of R. raskae formed a distinct clade ( Table 3) and was positioned as a sister group to R. javorensis with a genetic distance of 10.6%. Three sequences of R. spanovicae Ćurčić, Vrbica & Vesović sp. nov. and one sequence of Remyella sp. (accession number KX671646 ) clustered together with a minimum genetic distances of 0.0 to 0.1%. This clade separated from others with high evolutionary divergence ranging from 9.5 ( R. hussoni ) to 12.0% ( R. raskae ). Remyella propiformis and R. hussoni grouped together with a mean between-species genetic distance of 4.2%.

An identification key for the species of the genus Remyella Jeannel, 1931 (modified after Njunjić et al. 2017)

1. Sides of the pronotum converging in a straight line from the point of maximum pronotal width to the anterior pronotal angles ( Ćurčić et al. 2008: 111, 113, figs 1, 3; Njunjić et al. 2017: 151, figs 28–29, 32; Figs 2A–B , 3A, E ) ...................................................................................................................... 2

– Sides of the pronotum convex in the anterior part ( Jeannel 1931: 261, figs 6–7; Giachino & Etonti 1995: 80, fig. 1; Njunjić et al. 2017: 151, figs 30–31) ...................................................................... 4

2. Lateral rim of the pronotum extending from the base to slightly more than half the pronotal length ( Ćurčić et al. 2008: 111, 113, figs 1, 3; Njunjić et al. 2017: 151, figs 28–29, 32) ............................ 3

– Lateral rim of the pronotum extending from the base to ⅔–¾ of the pronotal length ( Figs 2A–B , 3A, E ) ........................................................................... R. spanovicae Ćurčić, Vrbica & Vesović sp. nov.

3. Total length of the body greater: R 4.6–4.9 mm (males), 4.5–5.2 mm (females). Pronotum widest in the middle ( Ćurčić et al. 2008: 113, fig. 3; Njunjić et al. 2017: 151, figs 29, 32). Male genital segment with lateral and central setae ............................. R. javorensis S. Ćurčić & B. Ćurčić, 2008

– Total length of the body smaller: 4.1–4.4 mm (males), 4.1–4.5 mm (females). Pronotum widest in basal third ( Ćurčić et al. 2008: 111, fig. 1; Njunjić et al. 2017: 151, fig. 28). Male genital segment with lateral setae only ( Njunjić et al. 2017: 150, fig. 18) ...... R. raskae S. Ćurčić & B. Ćurčić, 2008

4. Pronotal punctuation dense, uniformly distributed ( Njunjić et al. 2017: 151, figs 31, 37) ................ ..................................................................................................................... R. hussoni Jeannel, 1934

– Pronotal punctuation very sparse and sporadic, generally denser at the base and sometimes along the median line ( Giachino & Etonti 1995: 80, fig. 1; Njunjić et al. 2017: 151, figs 30, 36) .................. 5

5. Median lobe of the aedeagus broad, with a blunt apex ( Jeannel 1931: 264, fig. 11; Jeannel 1934: 101, fig. 11; Njunjić et al. 2017: 150, fig. 14) ................................................ R. scaphoides Jeannel, 1931

– Median lobe of the aedeagus narrow, with a sharp apex ( Jeannel 1934: 101, figs 12–13; Giachino & Etonti 1995: 82, figs 2–7; Njunjić et al. 2017: 150, fig. 15) ................ R. propiformis Winkler, 1933

Figures

Fig. 1. Map of a part of southwestern Serbia and northeastern Montenegro (Pešter Plateau) with the localities of the species of Remyella Jeannel, 1931.

Fig. 6. Phylogenetic tree of the species of Remyella Jeannel, 1931 based on COI sequences, determined with Bayesian evolutionary analysis. Bootstrap values are indicated above/below the branches. Anthroherpon taxi remyi Jeannel, 1931 was used as outgroup taxon. The colours and symbols correspond to those used for the species of Remyella shown in Fig. 1.

Fig. 2. Habitus of Remyella spanovicae Ćurčić, Vrbica & Vesović sp. nov., dorsal view. A. Holotype, ♂ (IZFB-24/15). B. Paratype, ♀ (IZFB-24/17). Scale bars = 2 mm.

Fig. 3. Remyella spanovicae Ćurčić,Vrbica &Vesović sp. nov.,SEM images of the external morphological features. A–F, J, K. Paratype, ♀ (IZFB-24/18). G–I. Paratype, ♀ (IZFB-24/19). A. Habitus, dorsal view. B. Right antenna, dorsal view. C. Head, dorsal view. D. Microsculpture of head, dorsal view. E. Pronotum, dorsal view. F. Microsculpture of pronotum, dorsal view. G. Mesoventrite, ventral view. H. Mesoventrite, lateral view. I. Pronotum, lateral view. J. Elytra, dorsal view. K. Microsculpture of elytra, dorsal view. Scale bars: A = 2 mm; B = 1 mm; C, E, G–J = 500 μm; D, F, K = 50 μm.