Heser stoevi Deltshev

Deltshev, Christo, 2016, A new spider species, Heserstoevi sp. nov., from Turkmenistan (Araneae: Gnaphosidae), Biodiversity Data Journal 4, pp. 10095-10095 : 10095

Heser stoevi Deltshev sp. n.

Materials

Type status: Holotype. Occurrence: recordedBy: P. Stoev; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificName: Heserstoevi; family: Gnaphosidae; taxonRank: species; scientificNameAuthorship: Deltshev; Location: continent: Asia; country: Turkmenistan; stateProvince: Lebap; county: Koytendag District; locality: v. Hojeypil, around the Dinosaurs tracks Site ; verbatimElevation: 1150; decimalLatitude: 37 56.443; decimalLongitude: 66 37.597; Identification: identifiedBy: Christo Deltshev; dateIdentified: 2015; Event: samplingProtocol: hand collecting; eventDate: 05/25/2015; habitat: under stones; Record Level: institutionID: NMNHS; collectionID: Archnida; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: recordedBy: P. Stoev; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Heserstoevi; family: Gnaphosidae; taxonRank: species; scientificNameAuthorship: Deltshev; Location: continent: Asia; country: Turkmenistan; stateProvince: Lebap; county: Koytendag District; locality: v. Hojeypil, around the Dinosaurs tracks Site ; verbatimElevation: 1150; decimalLatitude: 37 56.443; decimalLongitude: 66 37.597; Identification: identifiedBy: Christo Deltshev; dateIdentified: 2015; Event: samplingProtocol: hand collecting; eventDate: 05/25/2015; habitat: under stones; Record Level: institutionID: NMNHS; collectionID: Archnida; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: recordedBy: P. Stoev; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Heserstoevi; family: Gnaphosidae; taxonRank: species; scientificNameAuthorship: Deltshev; Location: continent: Asia; country: Turkmenistan; stateProvince: Lebap; county: Koytendag District; locality: v. Garlyk, around cave Gulshirin (= Geofizicheskaya) ; verbatimElevation: 860; decimalLatitude: 37 40.394; decimalLongitude: 66 23.698; Identification: identifiedBy: Christo Deltshev; dateIdentified: 2015; Event: samplingProtocol: hand collecting; eventDate: 05/28/2015; habitat: under stones; Record Level: institutionID: NMNHS; collectionID: Archnida; basisOfRecord: PreservedSpecimen

Description

Male holotype: Total length 5.25; prosoma, length 2.55, width 1.80; sternum length 1.43, width 1.05; chelicerae, length 0.75, width 0.30; opisthosoma, length 5.25. Carapace uniformly brown, with a fovea in the posterior half (Fig. 1a, c). All eyes subequal, AME circular, separated from each other by their own diameter, ALE oval, touching AME. PME oval to subtriangular, touching, larger than AME. PLE oval, slightly smaller than ALE, separated from PME by more of one PLE diameter. Clypeus vertical, large one diameter of AME. Chelicerae brown, with a few scattered thin setae on anterior surface, promarginal rim with three very small teeth spaced closely to fang base, retromarginal rim spineless. Sternum smooth, yellow brown, shield-shaped with a thin border (Fig. 1b). Abdomen grey with frontal row of curved hairs and a scutum covering about 10% of abdominal dorsal surface area (Fig. 1a, c). Legs yellowish to yellow-brown (Fig. 1a, c), leg formula 4123, measurements as in Table 1.

Male palp (Fig. 2a, b, c, Fig. 5a, c, e): Distinctive retrolateral tibial apophysis is not presented, hence distal part of tibia retrolateral is strongly chitinized and dark colored. The embolus is slender, basally prolaterally inserted, extends across the broad and flat conductor (sensu Bosselaers 2010), circling more than half of the tegulum. Median apophysis large, hook-shaped.

Female paratype: Total length 6.00; prosoma, length 2.63, width 1.80; sternum length 1.50, width 1.05; opisthosoma, length 3.38 (Fig. 3a, c). All characters as described for male. Leg measurements as in Table 2.

Epigyne and vulva (Figs 4a, b, 6a, b): characterized by well-developed copulatory openings, leading to coiled insemination ducts, connected with coiled spermathecae.

Diagnosis

The somatic characters of the new species correspond to those of the genus Heser , but the genitalia are distinctive and separate well the new species from all other congeners. Morphologically, the new species resembles H. aradensis (Fig. 1b, d) but the male has longer embolus, and smaller and flattened conductor (sensu Bosselaers 2010), as well as lacks distinctive retrolateral tibial apophysis (Fig. 2a, c, e). Female has distinctive epygine and vulva, characterized by well-defined copulatory openings leading to coiled insemination ducts, connected with coiled spermathecae (see Figs 4c, d, 6c, d for comparison).

Etymology

Named in honour of the Bulgarian zoologist Pavel Stoev, who collected the species; name in genitive case.

Distribution

The species is hitherto known only from two closely situated localities in the western slope of Koytentag Mts, southeastern Turkmenistan (Fig. 7).