Protoglyptus bernicolae Gargominy, 2025

Gargominy, Olivier, Fontaine, Benoît, Tercerie, Sandrine & Zuccon, Dario, 2025, New species and new records of families, genera and species of land snails (Mollusca, Gastropoda) from French Guiana, ZooKeys 1230, pp. 155-194 : 155-194

Protoglyptus bernicolae Gargominy sp. nov.

Figs 10 , 11

Type locality.

French Guiana, Saül, Mont Galbao.

Type material.

Holotype. French Guiana • 1 95 % ethanol specimen (shell separated); Saül, Mont Galbao (SAUL 47) ; 3.60183 ° N, 53.27239 ° W; alt. 650 m; 27 Nov. 2018; OG, SS, ST, BF ( PAG & MNHN) leg.; DZ brulée et cambrouse à l’est; GenBank: PQ 629105; Bold: DREAL 855-23 ; MNHN-IM-2013-75865 . Paratypes (14). French Guiana • 2 95 % ethanol specimens; Saül, Mont Galbao , same data as the holotype; GenBank: PQ 629096; Bold: DREAL 1376-23 ; MNHN -IM-2013-75863 ; GenBank: PQ 629093; Bold: DREAL 856-23 ; MNHN -IM-2013-75864 • 1 dry specimen; Saül, Mont Galbao , same data as the holotype; MNHN -IM-2012-21977 • 4 dry specimens; Saül, Mont Galbao face nord-est (SAUL 65) ; 3.59681 ° N, 53.26257 ° W; alt. 503 m; 20 Feb. 2020; BF, AA, OG ( PAG & MNHN) leg.; Cambrouse et lianes en forêt; MNHN -IM-2018-14041 • 4 95 % ethanol specimens; Saül, Mont Galbao , same data as preceding; MNHN -IM-2013-76397 • 3 95 % ethanol specimen; Mana, Réserve de la Trinité, cambrouse layon C à environ 1300 m du camp Aya (TRI 20) ; 4.58417 ° N, 53.4054 ° W; alt. 80 m; 14 Apr. 2019; BF, ST ( MNHN / ONF) leg.; Cambrouse; GenBank: PQ 629097; Bold: DREAL 859-23 ; MNHN -IM-2013-75989 ; GenBank: PQ 629102; Bold: DREAL 858-23 ; MNHN -IM-2013-75990 ; GenBank: PQ 629111; Bold: DREAL 857-23 ; MNHN -IM-2013-75991 .

Other material examined.

French Guiana • 4 dry specimens; Mana, Réserve de la Trinité, cambrouse layon C à environ 1300 m du camp Aya (TRI 20) ; 4.58417 ° N, 53.4054 ° W; alt. 80 m; 14 Apr. 2019; BF, ST ( MNHN / ONF) leg.; Cambrouse; MNHN -IM-2014-7920 • 5 dry juvenile specimens; Mana, Réserve naturelle de La Trinité, Layon C à environ 1600 m du camp Aya (TRI 31) ; 4.58421 ° N, 53.40542 ° W; alt. 67 m; 18 Apr. 2019; BF, ST ( MNHN / ONF) leg.; Cambrouse; MNHN -IM-2014-7921 .

Diagnosis.

A Protoglyptus species with whorls slightly keeled at the periphery and spiral rows of long setae mainly placed on this keel.

Description.

Holotype. Shell of medium size (height 6.0 mm, diameter 5.5 mm), dextral, thin, shiny, medium-spired, conical; colour uniformly brownish, almost subtranslucent. Whorls 4.5, slightly inflated with shallow suture, slightly keeled at the periphery; last whorl descending more rapidly below the periphery of the preceding. Protoconch one whorl, with sculpture consisting of oblique radial ribs, interstices ~ 3 × as wide as the ribs, with very fine spiral striae in between the riblets; protoconch / teleoconch transition distinct because of change in sculpture; surface of teleoconch with sculpture consisting, on the upper part of the whorl, of 6–10 fine spiral rows of periostracal scales expanding to long setae at the periphery of the whorl and shorter setae at the middle of its upper part; on the lower part, ~ 16 fine spiral rows of periostracal scales expanding to shorter setae on three rows; this spiral sculpture on the lower part of the whorl totally disappearing from the aperture into the interior of the shell. Peristome not formed, simple; aperture oblique, prosocline, crescent-like. Umbilicus very small, punctiform, partially covered by the columellar wall.

Body pale grey, whitish around the head; head brownish, similar to the colour of the shell; upper tentacles elongated, inflated at the tip; eyes black, small, situated on the upper part of the tentacles; lower tentacles with whitish tips. Inner mantle with small white patches visible through the transparency of the shell (Fig. 11 ).

Etymology.

The species is named after Bernard and Nicole Gargominy, parents of the first author, in recognition of the unswerving taste for nature they have transmitted. The species name is a contraction of both first names declined in the feminine genitive as it ends with Nicole.

Distribution.

This species is only known from French Guiana: Mont Galbao and Réserve de la Trinité.

Habitat.

In leaf litter of vegetation dominated by Lasiacis species (“ cambrouses ”).

Remarks.

No fully adult specimens have been found. The holotype is the more subadult specimen and the aperture description is thus not informative. The structure of the protoconch immediately places the species as belonging to genus Protoglyptus . Protoglyptus longiseta (S. Moricand, 1846) described from Bahia Province, Brazil ( Moricand 1846: 156, pl. 5 figs 18–20) shares the long setae but is larger, as large as tall, has more convex whorls, and setae of equal length all over the teleoconch.

This species seems to be restricted to vegetation dominated by Lasiacis species ( Poaceae ) locally called “ cambrouses ”.

The six COI sequences (four haplotypes) form two groups, from Saül and Trinité, respectively, differing by 2.1–2.7 % (p - distance).

Figures

Figure 10. Protoglyptus bernicolae sp. nov., holotype MNHN-IM- 2013-75865. Scale bar: 5 mm.

Figure 11. Protoglyptus bernicolae sp. nov.: holotype MNHN-IM- 2013-75865 alive.