The previously unknown female of the jumping spider Heliophanus xerxesiLogunov, 2009 from Iran is described, diagnosed and illustrated. A map showing all the collecting localities of this species is provided.
Heliophanus C.L. Koch, 1833 is one of the largest genera in Salticidae, containing 169 valid species (World Spider Catalog, 2019). Wesołowska (1986) divided this genus into three subgenera and many species groups; the largest subgenus, Heliophanus, was divided into 12 species groups.
Currently, 14 Heliophanus species are known from Iran (Zamani et al., 2019). Heliophanus xerxesi Logunov, 2009 was described on the basis of the male holotype collected in Kerman Province, southern Iran. Based on the conformation of the male and female copulatory organs, this species seems to be a member of the “auratus” species group (sensu Wesołowska, 1986), but differs from other members of this group by the absence of a large protuberance at the embolic base.
The aims of this paper are: (1) to describe the female of H. xerxesi for the first time and (2) to map all occurrences of this species.
MATERIAL AND METHODS
The studied specimens are deposited in the following museums (curator names in parentheses): ISEA = Institute of Systematics and Ecology of Animals, Novosibirsk, Russia (G.N. Azarkina); MMUE = The Manchester Museum, University of Manchester, UK (D.V. Logunov). The body coloration refers to alcohol-preserved specimens. All drawings were made with the aid of a reticular eyepiece attached to a MBS-10 stereomicroscope. The epigynes was detached and macerated in 20% KOH solution overnight. Photographs were taken with a Canon EOD 550D camera attached to a Zeiss Stemi 2000-C. Images were stacked with Helicon Focus 6.3 software at the Institute of Systematics and Ecology of Animals. All drawings and photos were edited and assembled in Adobe Photoshop CS5. All measurements are in mm. Legs were measured on the dorsal side and measurements are given in the following manner: total length (femur + patella + tibia + metatarsus + tarsus). For leg spination the method of Ono (1988) is followed. The distribution map was compiled using the online mapping software SimpleMappr (Shorthouse, 2010).
Abbreviations: ALE = anterior lateral eye; AME = anterior median eye; ap = apical; d = dorsal; EW = epigynal wings; Fm = femur; Mt = metatarsus; pr = prolateral; PLE = posterior lateral eye; Pt = patella; rt = retrolateral; Tb = tibia; v = ventral.
Family Salticidae Blackwall, 1841
Subfamily Salticinae Blackwall, 1841
Tribe Chrysillini Simon, 1901
Genus Heliophanus C.L. Koch, 1833
Heliophanus xerxesi Logunov, 2009
Heliophanus xerxesi Logunov, 2009: 905, figs 13-17.
Material examined: MMUE G7635.1; 1 male, 1 female; IRAN, Ilam Province, Darrekh Shank, Kabirkuh, c. 32°54′N, 47°44′E; III.2015; collector unknown. – ISEA 001.8437; 1 male; IRAN, Markazi Province, Tafresh County, c. 8 km SW of Tafresh, river valley, 34°37′30-37″N, 49°56′46-49″E, 2300-2312 m a.s.l.; 29.V.2017; leg. O.E. Kosterin.
Extended diagnosis: The female copulatory organs of H. xerxesi are similar to those of H. forcipifer Kulczyński, 1895, but differ in having larger epigynal wings (Fig. 1 cf. Rakov & Logunov, 1997: fig. 81) and markedly smaller spermathecae (Fig. 3 cf. Rakov & Logunov, 1997: figs 82-83). For the diagnosis of the male, see Logunov (2009).
Female: Carapace 1.70 long, 1.30 wide, 0.75 high at PLE. Ocular area 0.75 long, 1.05 wide anteriorly and 1.05 wide posteriorly. Diameter of AME 0.35. Abdomen 2.70 long, 1.90 wide. Cheliceral length 0.50. Clypeal height 0.05. Length of leg segments: I 2.65 (0.80 + 0.50 + 0.55 + 0.45 + 0.35); II 2.45 (0.80 + 0.40 + 0.50 + 0.45 + 0.30); III 3.00 (0.90 + 0.50 + 0.55 + 0.65 + 0.40); IV 3.85 (1.15 + 0.55 + 0.85 + 0.80 + 0.50). Leg spination: I: Fm d 1-1-1; Tb pr 0-1, v 2-0; Mt v 2-2 ap. II: Fm d 1-1-1; Tb pr 0-1, v 1-0; Mt v 2-2 ap. III: Fm d 1-1-2; Tb pr and rt 0-1, v 2 ap; Mt pr 2 ap, rt 2 ap, v 2 ap. IV: Fm d 1-1-1; Tb pr and rt 1-1, v 2 ap; Mt pr and rt 1-2 ap, v 1-0-2 ap. Coloration: Carapace dark brown, almost black, shiny, covered with sparse white scales (Fig. 11). Sternum dark brown (Fig. 12). Labium and endites brown, with pale apexes. Chelicerae dark brown. Clypeus and cheeks brown, covered with short white hairs. Abdomen brown ventrally, covered with white scales; dorsum dark brown, covered with white and iridescent scales (Fig. 11). Book-lung covers brown. Spinnerets dark brown. Palps yellow, covered with white hairs. Palpal coxa dark brown, palpal tibia covered with brown hairs. All legs yellow. Coxa IV dark brown retrolaterally. Fm I with four stridulatory hairs. Epigyne and spermathecae as in Figs 6-8: copulatory openings hidden under C-shaped epigynal wings (Fig. 6), spermathecae small, with two short accessory glands (Fig. 8).
Distribution: Heliophanus xerxesi is an Iranian endemic, known from Chaharmahal & Bakhtiari, Ilam, Isfahan, Markazi and Kerman provinces, western to southeastern Iran (Fig. 13) (Logunov, 2009; Zamani et al., under review; present data).
A total of 14 Heliophanus species (see Table 1) have been recorded from Iran (Zamani et al., 2019). Two species, H. cupreus (Walckenaer, 1802) and H. flavipes (Hahn, 1832), are widely distributed in the Palaearctic, from Europe to the South Urals and central Siberia (Logunov & Marusik, 2001). The remaining species are confined to the territory of the “ancient Mediterranean” (sensu Kryzhanovsky, 2002), except for H. edentulus Simon, 1871 which was also reported from Nigeria (Wesołowska & Edwards, 2012). Two species, H. iranus Wesołowska, 1986 and H. xerxesi, seem to be endemic to Iran. However, H. xerxesi, which was described from southern Iran, has also been recorded from the northwestern part of the country (present data) and therefore its presence in neighbouring countries such as Azerbaijan, Armenia, Iraq and Turkey is possible. For five species, H. decoratus L. Koch, 1875, H. edentulus, H. equester L. Koch, 1867, H. glaucus Bösenberg & Lenz, 1895 and H. verus Wesołowska, 1986, the corresponding localities in Iran lie at the easternmost limit of their distribution (Logunov et al., 2002; Logunov, 2010). Heliophanus forcipifer has the southernmost limit of its distribution in Iran (Logunov et al., 2002).
We are much obliged to O.E. Kosterin for providing us with his collected material. Special thanks go to D.V. Logunov for his kind linguistic help and critical comments that helped us improve the manuscript. This work was partly supported by the Federal Fundamental Scientific Research Programme for 2013-2020 (No. AAAA-A16-116121410121-7) for GA.