Corcovetella galianoae, Pekár, 2022

Pekár, Stano, 2022, Two new ant-mimicking spiders (Araneae: Salticidae) from Costa Rica, European Journal of Taxonomy 852 (1), pp. 31-42 : 37-40

Corcovetella galianoae sp. nov.

urn:lsid:zoobank.org:act:150EC988-F9A0-439D-987B-8D13D5C1A1A0

Figs 1F–G, 4A–E, 5A–F

Diagnosis

Males of C. galianoae sp. nov. can be distinguished from C. aemulatrix by enlarged chelicera and a triangular and bent RTA. Females can be distinguished by an atrium wider than long and spermathecae aside of the atrium.

Etymology

The name is a matronym in honour of Maria Galiano, who has advanced salticid taxonomy in South America.

Type material

Holotype

COSTA RICA – Heredia Province • ♂; Puerto Viejo de Sarapiquí, La Selva Biological Station and Reserve ; 10°25.87145′ N, 84°0.45123′ W; 16 Apr. 2015; G. Corcobado leg.; litter; NMP ( P6A 7399 ).

Paratypes

COSTA RICA – Heredia Province • 1 ♀; same collection data as for holotype; 2 May 2015; NMP ( P6A 7400 ) • 1 ♂, 1 ♀; same collection data as for holotype; MUB • 1 ♀; same collection data as for preceding; 2 May 2015; MUB .

Other material examined

COSTA RICA – Heredia Province • 2 juvs; same collection data as for holotype; MUB • 1 juv.; same collection data as for holotype; 7 May 2015; MUB .

Description

Male

MEASUREMENTS (N = 2). Total body 3.56 (4.6) mm long; carapace 1.60 (1.87) mm long, 0.92 (1.19) mm wide; cheliceral basal segment 0.68 (1.02) mm long, 0.35 mm wide; cheliceral fang 0.64 mm long; abdomen 1.50 (1.60) mm long, 0.89 mm wide. Diameter of eyes: AME = 0.28 mm, ALE = 0.11 mm, PME = 0.04 mm, PLE = 0.14 mm; sternum 0.69 mm long, 0.35 mm wide. Leg segments: palp (0.35, 0.18, 0.35, 0.35), I (0.94, 0.45, 0.99, 0.64, 0.40), II (0.69, 0.39, 0.69, 0.49, 0.30), III (0.74, 0.30, 0.59, 0.69, 0.30), IV (1.14, 0.35, 0.94, 0.94, 0.35).

COLOUR. Chelicerae brown covered with white setae ( Fig. 1F), carapace brown with cephalic part dorsally black, white setae around eyes, endites and palps brown, labium and sternum dark-brown, most leg segments with longitudinal black stripes on sides, all Cx pale, all Fe mostly black, Pt and Ti I+II pale, other black, Mt I-III pale, Mt IV black, Ta I black, other Ta pale; abdomen brown to black, dorsally and laterally with a transverse wide white stripe in the middle ( Fig. 1F).

MORPHOLOGY. Basal segment of chelicera enlarged, protruding anteriorly with 3 teeth on prolateral margin, 1 tooth on retrolateral margin ( Fig. 5A); fangs straight, distally bent; cephalic part of carapace dorsally flat, higher than thoracic part, without constriction ( Fig. 4A). Leg spines: Ti I ventrally with 2.2.2, Mt I, II, III ventrally 2.2, Ti II ventrally with 2.1. Abdomen elipsoid, with a dorsal scutum, without constriction. Palpal Pt, Ti and Ta with dense plumose setae on the ventral side. RTA triangular with bent tip ( Figs 4E, 5D), cymbium with elongated apophysis ( Figs 4C, 5C), bulbus oval split in the middle, embolus coiled ( Figs 4D, 5B).

Female

MEASUREMENTS (N = 2). Total body 4.86 (4.32) mm, carapace 1.84 (1.73) mm long, 1.12 (0.95) mm wide; cheliceral basal segment 0.48 (0.54) mm long, 0.35 mm wide, cheliceral fang 0.32 mm long; sternum 0.89 mm long, 0.45 mm wide, abdomen 2.24 (2.38) mm long, 1.21 mm wide. Diameter of eyes: AME = 0.35, ALE = 0.14, PME = 0.04, PLE = 0.14. Leg segments: palp (0.39, 0.35, 0.52, 0.60), I (0.89, 0.45, 0.74, 0.59, 0.39), II (missing), III (0.99, 0.45, 0.74, 0.79, 0.34), IV (0.94, 0.50, 1.24, 1.24, 0.44).

COLOUR. As in male ( Fig. 1G).

MORPHOLOGY. As in male but chelicerae smaller, with 5 teeth on prolateral and 1 tooth on retrolateral margin. Palpal Ti and Ta bulbous with dense plumose setae on the ventral side. Epigyne with a single oval atrium, wider than long ( Figs 4B, 5E); spermathecae composed of two chambers with ducts twisted in the middle and with fertilisation ducts in front ( Fig. 5F).

Natural history

The species was collected from litter. Both sexes appear to resemble Camponotus planatus Roger, 1863 ants ( Fig. 1H).

Barcode

COI of this species is deposited in GenBank, accession no. OM321372 .

Distribution

Known only from type locality in Costa Rica.