Kut dimensis, Kunt, Kadir Bogac, Elverici, Mert, Yagmur, Ersen Aydin & Oezkuetuek, Recep Sulhi, 2019

Kunt, Kadir Bogac, Elverici, Mert, Yagmur, Ersen Aydin & Oezkuetuek, Recep Sulhi, 2019, Kut gen. nov., a new troglomorphic spider genus from Turkey (Araneae, Dysderidae), Subterranean Biology 32, pp. 95-109: 95

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Kut dimensis

sp. nov.

Kut dimensis  sp. nov. Figs 3View Figure 3, 4View Figure 4

Material examined.

Holotype: 1 ♂ ( ETZM), Turkey: Antalya Province, Alanya District, Kestel Town , Dim Cave (36°32.405'N, 32°6.603'E), hand collecting from stalactites and stalagmites, 04 January 2013, leg. K.B. Kunt & M. Elverici.GoogleMaps  Paratypes: 3 ♂♂, 5 ♀♀, 4 juveniles ( ETZM),GoogleMaps  1 ♂, 1 ♀ ( AZMM), same data as holotypeGoogleMaps  .


Male palp of Kut dimensis  sp. nov. closely resembles that of K. troglophilus  (Brignoli, 1978) comb. nov. Kut dimensis  sp. nov. palp differs by having an embolus with tip sharply bent posteriorly, instead of gradually, and by having a more slender tegulum. Difference between Kut dimensis  sp. nov. and K. izmiricus  sp. nov. palps is more distinct, since in K. izmiricus  sp. nov. tegulum/embolus ratio is higher compared to other species of the genus. K. dimensis  sp. nov. females differ from other species by having longer paraspermathecae compared to midspermathecae, which is the opposite in the other two species.

Derivatio nominis.

The specific name is a toponym that refers to the type locality, Dim Cave located at Dim Valley in Alanya District.


(Holotype ♂ / Paratype ♀). AL 4.25/4.11; CL 4.40/4.25; CW 3.50/3.30; ChF 0.95/1.10; ChG 0.75/0.75; ChL 1.70/2.05.


Somatic traits of Kut dimensis  sp. nov. resemble the other two species in general. Eye reduction at an extreme level, eyes almost absent ( Fig. 4AView Figure 4). Anterior and posteriolateral eyes barely visible only under stereomicroscope, in a state of indistinct spots. Legs more slender than in K. troglophilus  (Brignoli, 1978) comb. nov. Anterior metatarsi with ventral spines. See Tables 5, 6 for details on leg measurements and spination.

Palp ( Fig. 4G, HView Figure 4). Palpal tarsus shorter than tibia, conical. ¾ part of embolus continues straight after the separation from the tegulum, then bent with a sharp coil at the 4th quarter, shaped like an “L” towards posterior.

Vulva ( Fig. 4G, HView Figure 4). Midspermatheca fingertip shaped, shorter than paraspermathecae. Paraspermathecae pin-shaped. Spermathecae surrounded by a dome-shaped chitinized structure. Spermathecae posteriorly with two lucent, strongly sclerotized, horizontally aligned bars.


Kut dimensis  sp. nov. is not the first troglomorphic species recorded from its type locality, the Dim Cave. López-Pancorbo et al. (2013) described a troglobiont spider Kryptonesticus dimensis  ( López-Pancorbo, Kunt & Ribera, 2013) ( Nesticidae  ) from the same cave. A cave cricket Troglophilus alanyaensis  Taylan et al., 2012 ( Orthoptera  , Rhaphidophoridae  ) is another endemic species known only from this cave.

The Dim Valley, the valley where the Dim Cave located, has been studied by our team extensively in the recent past. There have been new species of Dysderidae  discovered and described like Harpactea alanyana  Özkütük et al., 2015 and Harpactea ballarini  Kunt et al., 2013. Furthermore, the locality has been extensively sampled by the first author, as it was covered in his MSc thesis, titled " Harpacteinae  Fauna of Antalya Province". We provide these details to point out that Kut dimensis  sp. nov. has not been found outside of the cave, in surface habitats, despite extensive sampling efforts, which is one of the reasons we consider this species a troglobiont.