Dasumia antalyaensis, Kunt & Özkütük, 2023

Kunt, Kadir Boğaç & Özkütük, Recep Sulhi, 2023, New data on the Harpacteinae of Turkey (Araneae, Dysderidae), Zootaxa 5375 (3), pp. 379-408 : 381-382

Dasumia antalyaensis sp. nov.

Figs 1–4

Material examined: Holotype 1 ♀ ( ETZM), Finike Dist. , Alacadağ Vill., road of Eroğlu tomb (36°26’12”N 30° 2’22”E), 1810 m, 18 Sept 2014, leg. E.A. Yağmur.

Etymology: The specific name refers to the area of distribution.

Diagnosis: D. antalyaensis sp. nov. resembles D. cephalleniae Brignoli, 1976 and D. nativitatis Brignoli, 1974 by the strongly sclerotised flat spermathecae, the prominent anterior margins of the anterior arch and the large posterior diverticulum ( Figs 3–4 ). However, the anterior arc of D. antalyaensis sp. nov. differ from D. cephalleniae and D. nativitatis . Namely, in D. antalyaensis sp. nov. the tip of the spermatheca is narrow and slightly concave, while in D. cephalleniae and D. nativitatis it is broad and straight. Besides these: D. antalyaensis sp. nov. has numerous spines on femora III, D. cephalleniae has no spines, D. nativitatis has only three spines ( Fig. 1 ). There is also a significant variation in body size between the species. Comparing the females of the three species, D. antalyaensis sp. nov. is bigger than both D. nativitatis and it is larger than D. cephalleniae in terms of body length.

Description: Measurements: [Holotype ♀] TL 6.50; AL 3.75; CL 2.75; CW 2.15; Clh 0.07; AEd 0.14; iAE 0.06; PLEd 0.13; PMEd 0.12; ChF 0.38; ChG 0.38; ChL 1.15.

Large sized harpacteine spiders. Carapace reddish dark brown; fovea longitudinal, black and distinct ( Fig. 1 ). There is a tonal difference between cephalic and thoracic regions. AE, PLE and PME arranged annulary, all of them close to each other. Sternum and gnatocoxae reddish brown. Labium and chelicerae reddish. Cheliceral groove with four teeth. Promarginal teeth strongly developed at the base of the cheliceral groove, of the same size and arranged in a row. The first of the retromarginal teeth is aligned with the second of the promarginal teeth. The retromarginal teeth are smaller than the promarginal teeth, but they are also the same size and approximately two tooth lengths apart ( Fig. 2 ).

Abdomen cream colored, covered with short blackish setae ( Fig. 1 ). Legs brown. There are tonal differences at the distal and proximal parts of the leg segments. Leg formula: IV, I, II, III. Leg spination and measurements are given in Tables 1 and 2.

Vulva ( Figs 3–4 ): Tip of spermathecal keel narrow, patelliform, very slightly concave. Spermatheca straight. Anterior margin of the anterior arch strongly concave. Edges are wide, convex, membranous, less sclerotized than the middle and oriented towards the anterior. The transversal bar is wider than the anterior arc. Central part strongly sclerotised, membranous towards the margins, with the tips curved inwards. Posterior diverticulum membranous, circular, almost the same width as the width of the anterior arc.

Figures

FIGURES 1–4. Dasumia antalyaensis sp. nov. 1. Habitus, dorsal view 2. Chelicera, ventral view (red dots, promarginal; white dots, retromarginal teeth) 3. Vulva, dorsal view 4. Ditto, ventral view. Abbreviations: AA, anterior margin of the anterior arch; AC, anterior arc; PD, posterior diverticulum; S, spermatheca; SK, spermathecal keel; TB, transversal bar.