Xysticus tenuiapicalis sp. nov. (Araneae: Thomisidae) from Turkey.
Abstract: Xysticus tenuiapicalis sp. nov. (Araneae: Thomisidae) is described based on males from Central Anatolian Region in Turkey.

Key Words: Araneae, Thomisidae, new species, Turkey

Se describe Xysticus tenuiapicalis sp. nov. (Araneae: Thomisidae) basado en los machos de la Region Central de Anatolia en Turquia.
Article Type: Report
Subject: Spiders (Physiological aspects)
Spiders (Identification and classification)
Entomology (Research)
Author: Demir, Hakan
Pub Date: 06/01/2012
Publication: Name: Florida Entomologist Publisher: Florida Entomological Society Audience: Academic Format: Magazine/Journal Subject: Biological sciences Copyright: COPYRIGHT 2012 Florida Entomological Society ISSN: 0015-4040
Issue: Date: June, 2012 Source Volume: 95 Source Issue: 2
Topic: Event Code: 310 Science & research
Geographic: Geographic Scope: Turkey Geographic Code: 7TURK Turkey
Accession Number: 299988814
Full Text: Thomisidae, commonly called crab spiders, is a big spider family comprising 177 genera and 2,146 species worldwide, of which 82 species of 14 genera are known in Turkey. The largest genus of this family, Xysticus C. L. Koch, 1835 currently contains 359 species and is distributed throughout the world. Among them, 45 species are known to Turkish fauna (Demir 2008; Demir et al. 2006, 2008a-c, 2009a, b, 2010a, b; Logunov 2006; Logunov & Demir 2006; Topcu & Demir 2004; Topcu et al. 2005; Platnick 2011). In the present study, a new species from Turkey is described.

Materials and Methods

Most of the specimens were collected in Central Anatolian Region of Turkey by pit-fall trapping and hand collecting. All illustrations were made with a Nikon SMZ-U stereomicroscope with drawing tube. All measurements are in millimeters. Abbreviations used in the text and in the figure are as follows: ALE, anterior lateral eyes; AME, anterior median eyes; ap, apical; d, dorsal; MOA, median ocular area; MOA-L, length of MOA; MOA-WA, anterior width of MOA; MOA-WP, posterior width of MOA; PLE, posterior lateral eyes; PME, posterior median eyes; VTA, ventral tibial apophysis; pr, prolateral; rt, retrolateral; v, ventral; NUAM, Arachnology Museum of the Nigde University, Nigde, Turkey. Terminology of genitalia and system of leg spination follow Ono (1988).

Xysticus Tenuiapicalis Sp. Nov.

Type Material

Holotype. One male, (NUAM), TURKEY: Nevseshir, Derinkuyu, Til village, 20 March 2005, leg. H. Demir. Paratypes: 1 male, (NUAM), Ankara, Kizilcahamam, 13 June 2003, leg. H. Demir; 1 male, (NUAM), Aksaray, Ihlara valley, 19 March 2005, leg. O. Seyyar.

Description

Measurements of Holotype. Carapace: 1.95 long, 1.92 wide. Abdomen: 2.02 long, 1.70 wide. Clypeus 0.25 long, chelicera 0.65 long. Eye sizes and inter distances: AME 0.12, ALE 0.15, PME 0.10, PLE 0.16; MOA-WA 0.75, MOA-WP 0.90, MOA-L 0.45, AME-AME 0.32, AME-ALE 0.16, PME-PME 0.30, PME-PLE 0.15. Lengths of legs [total length (femur+patella+tibia+metatarsu s+tarsus)]: I 6.30 (2.00+0.80+1.35+1.25+0.90), II 6.10 (2.00+0.75+1.25+1.20+0.90), III 3.65 (1.25+0.50+0.75+0.55+0.60), IV 3.85 (1.25+0.40+0.85+0.75+0.60).

Male. Carapace dark red-brown with V-shaped yellow median band. Ocular area yellow. Sternum yellow with red-brown spots. Labium and maxillae light brown. Chelicerae dark red-brown with yellowish dots. Femora, patellae and proximal parts of tibia I and II dark red-brown, other parts yellow. Femora and patellae III and IV light brown, tibiae, metatarsi and tarsi yellow. Dorsum of abdomen light brown with white stripes on sides and anteriorly, venter of abdomen grey brown. Spinnerets and branchial opercula light brown. Leg I spination: femur d. 1-1-2-1, p. 1-2-22-1, tibia v. 2-1-2-2-2ap., metatarsus p. 2-2-2-2ap., v. 1-2-2-2ap.

Palpus. Bulb much longer than wide, with 2 tegular apophyses; the median one uncinate, the apical one thorn-like shaped. Embolus long, thick and filiform, winding around tegulum and tutaculum. Tutaculum long. Tibia with ventral and retrolateral apophyses: the retrolateral apophysis obtuse; the ventral apophysis as in Figs. 1A, B.

[FIGURE 1 OMITTED]

Female. Unknown.

Etymology

The name derived from tiny apical tegular apophysis of male palp.

Distribution

Known from the type locality only.

Habitat

Specimen was collected under a stone in grass vegetation.

Diagnosis

Xysticus tenuiapicalis sp. nov. is closely related to X. lanio C. L. Koch, 1835, X. pseudolanio Wunderlich, 1995, X. ukrainicus Utotchkin, 1968 and X. slovacus Svaton, Pekar & Pridavka, 2000. The males of X. tenuiapicalis sp. nov. can be distinguished easily fromX. lanio (cf. Esyunin & Efimik 1995: Figs. 12-13; Utotchkin 1968: Figs. 6667), X. slovacus Svaton, Pekar & Pridavka, 2000 (cf. Esyunin & Efimik 1995: Figs. 16-17; Svaton et al. 2000: Figs. 3, 5-6) and X. ukrainicus Utotchkin, 1968 (Utotchkin 1968: Figs. 70-71) by the shape of the tegular and ventral tibial apophyses. From X. pseudolanio (cf. Wunderlich 1995: Figs. 34-35) males can be distinguished by tiny apical tegular apophysis, as well as by the shape of both the tutaculum and tegular apophysis.

References Cited

Demir, H., Topcu, A., and Turkes, T. 2006. A new species of the genus Xysticus C. L. Koch from Turkey (Araneae: Thomisidae). Zootaxa 1364: 45-49.

Demir, H., Aktas, M., and Seyyar, O. 2008a. The female of Xysticus pseudorectilineus (Wunderlich, 1995) (Araneae: Thomisidae) from Turkey. Zootaxa 1674: 65-68.

Demir, H., Aktas, M., and Topcu, A 2008b. Xysticus anatolicus n. sp. (Araneae: Thomisidae), a new species from Turkey. Entomol. News 119(3): 287-290.

Demir, H., Seyyar, O., and Aktas, M 2008c. A poorly known species of the spider genus Xysticus C. L. Koch (Araneae, Thomisidae) in Turkey. Arch. Biol. Sciences, Belgrade 60(4): 17-18.

Demir, H. 2008. An updated checklist of the Thomisidae (Araneae) of Turkey with zoogeographical remarks. Serket 11(2): 37-50.

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Demir, H., Aktas, M., and Topcu, A. 2010b. Notes on two Crab Spiders (Araneae: Thomisidae) from Turkey. Acta Zool. Bulgarica 62(3): 253-257.

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Svaton, J., Pekar, S., and Pridavka, R 2000. Xysticus slovacus sp. n., a new thomisid spider from Slovakia (Araneae: Thomisidae). Acta Universitatis Caroli nae Biologica 44: 157- 162.

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Utotchkin, A. S. 1968. The spider genus Xysticus of the USSR fauna. Perm 73 pp. (in Russian).

Wunderlich, J. 1995. Zur Kenntnis west-palaarktischer Arten der Gattungen Psammitis Menge 1875, Xysticus C. L. Koch 1835 und Ozyptila Simon 1864 (Arachnida: Araneae: Thomisidae). Beitrage zur Araneol. 4: 749-774.

Hakan Demib

Department of Biology, Faculty of Science and Arts, Nigde University, TR-51200 Nigde Turkey

E-mail: ozyptila@gmail.com
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