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.

Figures

Fig. 1. A–B, D. Myrmapana costaricaensis sp. nov. A. Adult male, dark form. B. Adult female, dark form. C. Ant Neoponera unidentata Mayr, 1862. D. Adult female, light form. E. Ant Pseudomyrmex sp. F–G. Corcovetella galianoae sp. nov. F. Adult male. G. Adult female. H. Ant Camponotus planatus Roger, 1863. Scale bars = 2.5 mm.

Fig. 4. Corcovetella galianoae sp. nov. A, C–F. Holotype, ♂ (P6A 7399 NMP). A. Prosoma, lateral view. B. Paratype, ♀ (P6A 7400 NMP), epigyne, ventral view. C. Left palp, retrolateral view. D. Left palp without plumose hairs, ventral view. E. Left palp, lateral view. Scale bars: A = 1 mm; B–E = 0.25 mm.

Fig. 5. Corcovetella galianoae sp. nov. A–D. Male. A. Chelicera, ventral view. B. Left palp, ventral view. C. Left palp, retrolateral view. D. Palpal tibia, lateral view. E–F. Female. E. Epigyne, dorsal view. F. Vulva. Scale bars = 0.25 mm.