﻿A new genus of Textricini Lehtinen, 1967 (Araneae, Agelenidae) from Anatolia

﻿Abstract Türkiye is known to have the highest diversity of the spider family Agelenidae in the Western Palaearctic and the highest diversity of the subfamily Ageleninae globally. The new agelenid genus Anatextrixgen. nov. (Ageleninae, Textricini) and its type species, A.spectabilissp. nov. (♂♀; Mersin and Adana provinces, southern Türkiye), are described. A key to all four genera of Textricini is provided.

Recently, we had the opportunity to examine specimens of a new species of Textricini from Türkiye. This species displays a series of interesting characters, including a strongly modified palpal femur bearing several processes or outgrowths, which is a unique trait in the whole family. Based on a comparison with other genera of Textricini, we decided that this undescribed species also represents a new genus. In this paper, both the new genus and species are described, and a key to all four genera of Textricini is provided.

Materials and methods
The samples were collected with pitfall trapping and hand aspirator and preserved in 70% ethanol. Specimens were photographed using a Canon EOS 7D camera attached to an Olympus SZX16 stereomicroscope at the Zoological Museum of the University of Turku. Digital images were montaged using Combine ZP and edited using CorelDraw. Illustrations of internal genitalia were made after clearing and cleaning the epigyne in a 10% KOH aqueous solution, followed by a few minutes of treatment in Chlorazol Black. Lengths of leg segments were measured on the dorsal side and are listed as: total length (femur, patella, tibia, metatarsus, tarsus). All measurements are in millimetres (mm). Spination formula follows Bolzern et al. (2008Bolzern et al. ( , 2009).

Key to the genera
This key is primarily based on the characters of the generotypes: Lycosoides coarctata (Dufour, 1831), Maimuna vestita (C.L. Koch, 1841), and Textrix denticulata (Olivier, 1789). Posterior arm of the conductor with two branches, one branch directed dorsally (Bd) and partly hiding cymbium; prolateral arm as large as tibia ( Fig. 8B Diagnosis. The new genus differs from all other genera of Textricini by having a strongly modified male palpal femur with two outgrowths and two bulges (vs one or none), presence of the palpal prolateral tibial apophysis (Pt) and the cymbial prolateral fold (Cf) (vs lacking), the straight mesal part of the embolic base (vs round) (cf. Figs 2A, 4A, 8A-F), and by having a thin septum in the epigyne (vs absent). Furthermore, the female of Anatextrix spectabilis sp. nov. differs from those of Textrix by having no epigynal fovea and scape (vs present). From the females of the two other genera, the female of this species differs by the anterior position of the receptacles (vs mesal or posterior).
Description. Same as for the type species.
Composition. Only the type species. Distribution. Same as for the type species.

Female (Paratype, ZMUT). Habitus as in
Epigyne as in Fig. 7A-G; epigynal plate 1.6× wider than long; fovea lacking depression, weakly sclerotized with thin septum (Se), anterior part delimited by well sclerotized margin, posterior part delimited by weakly sclerotized margins; septum not covered by setae; copulatory openings (Oc) located on posterior margin on both sides of septum; copulatory ducts (Cd) fused, forming a rectangular plate ca 2× longer than wide (Fig. 7G); receptacles (Re) small, suboval, located anteriorly and separated by ca one length of each; fertilization ducts (Fd) short and small.

Discussion
In this paper, a new genus and species of Textricini are described from southern Türkiye. Since many species of Textricini have characteristics that differ from the type species of the genera in which they are currently classified, this tribe, as a whole, needs to be revised. Furthermore, both Lycosoides and Textrix comprise species that show consider- able differences in the conformation of their copulatory organs, and, thus, might be misclassified. This is most likely why de Blauwe (1980) considered all Textricini species known at that time to belong to Textrix.
The terminology of one particular palpal sclerite in Maimuna has been controversial: Lehtinen (1967) suggested that a tegular (= median) apophysis is lacking (i.e., "totally reduced") in species of this genus, which was not followed by Levy (1996), Bolzern et al. (2013), and Dimitrov (2022). It became evident in our examination of the expanded bulbs that all species of Maimuna indeed lack a tegular apophysis, as the structure that the aforementioned authors considered as the "median apophysis" arises from the conductor, not the tegulum.
Although most of the Turkish agelenids belong to Tegenariini (including 19 endemic species), Textricini is also relatively diverse in this country (i.e., eight species in all four known genera, including one endemic genus and two endemic species; Danışman et al. 2022;present paper). As it has been mentioned earlier, members of this tribe are primarily distributed in the Mediterranean region. The only exceptions are Lycosoides lehtineni Marusik & Guseinov, 2003 from Azerbaijan and Textrix nigromarginata Strand, 1906 from Ethiopia, although both are known only from females and the latter is most likely misclassified (Strand 1906(Strand , 1908Marusik and Guseinov 2003).
Despite the relatively well-explored status of the Turkish agelenids, new species and records are still found regularly. Most likely there are many interesting species of Agelenidae in this country that are currently undiscovered, as it is evidenced by the remarkable new genus described in this paper. Hopefully, a more complete picture of the diversity of this family in Türkiye can be achieved once the lesser explored habitats (e.g., caves) and regions (e.g., eastern Türkiye) are systematically surveyed.