Troglocharinus sendrai, Fresneda & Rizzo & Comas & Ribera, 2021

Fresneda, Javier, Rizzo, Valeria, Comas, Jordi & Ribera, Ignacio, 2021, A redefinition of the genus Troglocharinus Reitter, 1908, with description of new species (Coleoptera, Leiodidae, Cholevinae, Leptodirini), Zootaxa 4926 (2), pp. 151-188 : 165-166

Troglocharinus sendrai sp. nov.

Figs 3 , 7 , 15 , 20 , 27, 28 , 42 , 52 , 58 .

Type locality. Spain, Lleida, La Vansa i Fórnols, Mina de Coll d’Arnat , UTM ( ETRS89 ) 31N 3690 46791, 1342 m .

Type series. Holotype ϐ ( MZB): “ Mina de Coll d’Arnat / La Vansa i Fórnols / (Alt Urgell) / 16-X-2015 / V. Rizzo leg.”, “DNA / Voucher nº / IBE-AN351”, and holotype label. The specimen has been used for DNA extraction and sequencing, DNA aliquotes are stored in the IBE and the MNCN (Ref. MNCN: ADN: 118945).

Paratypes (66 exx., CJC, CFL, MZB, IBE): same data as the holotype, with paratype labels 3 ♀♀ ; 19-X-69, Auroux leg., 2 ♀♀ ( MZB 70-1327 ) , 3 ♀♀ ( MZB 70-1328 ) , 1 ϐ ( MZB 70-1329 ), 1 ϐ ( MZB 70-1330 ), 1 ϐ- 2 ♀♀ ; 12-XI-2015, J. Comas leg., 1 ♀; 12-XI-2015 / 2-VI-2016, J. Comas leg., 8 ϐϐ- 8 ♀♀; 2-VI-2016, J. Comas leg., 2 ϐϐ- 6 ♀♀; 12-XI-2016 / 11-V-2017, J. Comas leg., 9 ϐϐ- 13 ♀♀. La Vansa i Fórnols , Coll d’Arnat, Baborell del Montsec, 26-X-69, Auroux leg., 1 ϐ ( MZB 70-1331 ); 15-IX-2019, Sendra & Pallisé leg. 4 ϐϐ- 1 ♀ ( CJC) . 1 paratype ♀ with same data as holotype used for DNA extraction and sequencing, voucher No. IBE-AN491 (DNA aliquotes stored in the IBE and the MNCN; Ref. MNCN: ADN: 118946) .

Differential diagnosis. Bathyscioid species of Troglocharinus with well-developed mesoventral keel; first male protarsomere as wide as apex of tibia, and as long as tarsomeres 2nd–4th. Median lobe of aedeagus regularly curved in lateral view, apex elongated and sinuate. Endophallus with long, narrow, elliptical NCs; upper node of the FVM rounded; PF2 with a sharp bend. Spiculum of the female urite viii short, wide and with trunctated apex. Spermatheca with two lobes wider than medial region, which is not arched; basal lobe larger than apical lobe.

Description of the Holotype. Habitus as in Fig. 3 . Body length 3.4 mm. Body shape oval. Body surface finely punctated on pronotum, with transverse striolas on elytra. With fine, yellowish, recumbent inconspicuous pubescence.

Antennomere lengths as in Table 3 . Pronotum transverse, lateral margins regularly arched, slightly narrower than elytra, with maximum width at base (maximum width = 1.4 x length = 0.9 mm.).

Elytra elongated, maximum width on anterior half, posterior half strongly narrowing towards apex.

Mesoventral keel well developed, with hook-like vertex.

Legs very long, particularly the posterior legs. Mesotibia arched, first protarsomere ( Fig. 7 ) as wide as apex of tibiae and as long as tarsomeres 2nd–4th.

Median lobe of aedeagus with sinuous margins in dorsal view ( Fig. 20 ), with apex apparently truncated; regularly curved in lateral view ( Fig. 15 ); apex elongated, sinuous and pointed.

Lateral stylus of the tegmen sinuate, somewhat shorter than median lobe and with three setae on apex, two inserted laterally, one arched and the other sinuate; third shorter, fine and straight, inserted on the opposed side. Membranous lamina very long, with a long and dense tuff of setae (“penicillum”) inserted in the apical region, including the membranous lamina ( Fig. 42 ).

Endophallus ( Figs 27, 28 ) with elliptical, long and narrow NCs; NFVM rounded and PF2 small and slightly arched.

Female. Protarsi not dilated, with antennae shorter than those of males. Spiculum of the urite viii short, wide and with truncated apex ( Fig. 58 ). Spermatheca with well differentiated lobes wider than the medial region, basal lobe larger, median region not bent ( Fig. 52 ).

Comparative notes. First male protarsomere heart-shaped ( Fig. 7 ) as in T. mengeli ( Fig. 9 ) and T mercedesi ( Fig. 10 ), but noticeably more elongated than in these two species. In T. sendrai sp. nov. and T. fadriquei sp. nov. the first male protarsomere is markedly subrectangular, with more parallel sides ( Figs 7, 8 ). Endophallus similar to that of T. fadriquei sp. nov., but the NFVM are rounded in T. sendrai sp. nov. ( Figs 27–28 ) and elongated-rectangular in T. fadriquei sp. nov. ( Figs 29–30 ). PF2 of T. sendrai sp. nov. small and bent, large and rectangular in T. fadriquei sp. nov.

Etymology. The species is named after our colleague Ramón Sendra, an active collaborator in collecting subterranean fauna.

Distribution ( Fig. 71 ).

1. La Vansa i Fórnols, Mina de Coll d’Arnat. The data “Castellar de Tost, Dolina de Coll d’Arnat, 19-10-1969, Auroux leg. (MZB)” given in Fresneda & Salgado (2017) corresponds to this locality.

2. Tora de Tost, Baborell del Pic del Montsec ( Fresneda & Salgado 2017), UTM (ETRS89) 31N 3683 46788, 1301 m.

Figures

FIGURE 71. Distribution map of the species.

FIGURES 3–4. Habitus of the holotypus of Troglocharinus sendrai sp. nov. (3) and T. fadriquei sp. nov. (4).

FIGURES 7–11. Male protarsus of Troglocharinus sendrai sp. nov. (7), T. fadriquei sp. nov. (8), T. mengeli (9)—Coves Encantades de Toloriu—, T. mercedesi (10)—Bòfia de Sant Jaume—and T. vinyasi (11)—Avenc de la Roca del Corb—.

FIGURES 15–19. Aedeagus in lateral view of Troglocharinus sendrai sp. nov. (15), T. fadriquei sp. nov. (16), T. mengeli (17)—Coves Encantades de Toloriu—, T. mercedesi (18)—Bofia de Sant Jaume—and T. vinyasi (19)—Avenc de la Roca del Corb.

FIGURES 20–24. Aedeagus in dorsal view of Troglocharinus sendrai sp. nov. (20), T. fadriquei sp. nov. (21), T. mengeli (22)—Cabana d’en Garraba—, T. mercedesi (23)—Bòfia de Sant Jaume—and T. vinyasi (24)—Avenc de la Roca del Corb.

FIGURES 27–34. Endophallus and schematic ampliation of the middle region of Troglocharinus sendrai sp. nov. (27–28), T. fadriquei sp. nov. (29–30), T. mengeli (31–32)—Cabana d’en Garraba—and T. mercedesi—Bòfia de Sant Jaume—(33–34).

FIGURES 35–47. Apex of the lateral stylus of the aedeagus of Troglocharinus ferreri (35)—Avenc Gran del Sant Roc, Begues—, T. fonti (36)—Cova d’Ormini, Montanissell—, T. hustachei (37)—Cova del Gel, Llimiana—, T. impellitierii (38)—Cova Palomera, Taús—, T. senenti (39)—Querant Gran de Paús, Vilanova de Meià—, T. subilsi (40)—Grallera de Cambrils—, T. mengeli (41)—Coves Encantades de Toloriu—, T. sendrai sp. nov. (42), T. fadriquei sp. nov. (43), T. orcinus (44)—Cova Gran de la Febró, Montblanc—, Speonomites velox (45)—Querant del riu Merlé, Vilanova de Meià—, S. antemi (46)—Cova dels Porredons, Baén—and S. latrunculus (47)—Cova del Lladre, Santa Linya—. Membranous lamina in yellow.

FIGURES 52–57. Spermatheca of Troglocharinus sendrai sp. nov. (52), T. fadriquei sp. nov. (53), T. mengeli (54)—Coves Encantades de Toloriu—, T. mercedesi (55)—Bòfia de Sant Jaume—, T. mercedesi (56)—Avenc del Xato—and T. vinyasi (57)—Avenc de l’Home Mort.

FIGURES 58–63. viii female urite of Troglocharinus sendrai sp. nov. (58), T. fadriquei sp. nov. (59), T. mengeli (60)—Coves Encantades de Toloriu—, T. mercedesi (61)—Bòfia de Sant Jaume—, T. vinyasi (62)—Avenc de l’Home Mort—and Speonomites velox (63)—Querant del riu Merlé, Vilanova de Meià—. Spermathecal complex of T. mercedesi: CE, spermaduct; E, spermatheca; LA, apical lobe; LBS, basal lobe; RM middle region; VIII, eight urite.