Raveniola ovchinnikovi, Zonstein, 2024

Zonstein, Sergei L., 2024, A revision of the spider genus Raveniola (Araneae, Nemesiidae). II. Species from Central Asia, European Journal of Taxonomy 967, pp. 1-185 : 74-75

publication ID	https://doi.org/ 10.5852/ejt.2024.967.2699
publication LSID	lsid:zoobank.org:pub:C08B8027-50CC-417E-BCD4-5183B9FF6738
persistent identifier	https://treatment.plazi.org/id/89FDF531-7C9A-4799-9279-7009A7A26049
taxon LSID	lsid:zoobank.org:act:89FDF531-7C9A-4799-9279-7009A7A26049
treatment provided by	Plazi
scientific name	Raveniola ovchinnikovi
status	sp. nov.

Treatment

Raveniola ovchinnikovi sp. nov.

urn:lsid:zoobank.org:act:89FDF531-7C9A-4799-9279-7009A7A26049

Figs 26–27 View Figs 19–27 , 106 View Figs 100–108 , 161 View Figs 160–171 , 225 View Figs 220–228 , 284–285 View Figs 282–289 , 375 View Figs 364–378 , 450–453 View Figs 448–456 , 612 View Figs 611–618 , 759

Diagnosis

Raveniola ovchinnikovi sp. nov. clearly differs from other species of the group by having a pale coloured body and legs, as well as by the full absence of the abdominal pattern and by its clearly longer (shortly digitiform vs triangular) apical segments of PLS ( Figs 26–27 View Figs 19–27 , 612 View Figs 611–618 cf. 19–24, 28–35, 75–81, 597–598, 605, 609, 614, 616).

Etymology

The specific epithet is given in honour and memory of Sergei Ovchinnikov (1958–2007) noting his considerable contribution to the modern study of Central Asian spiders.

Material examined

Holotype

KYRGYZSTAN • ♂; foothills of Kyrgyz Mts (northern slope), Kok-Dzhar Gorge , 3 km SSE of Bishkek; 42°47.4′ N, 74°37.7′ E; 1100 m a.s.l.; 15 Oct. 1992; S. V. Ovchinnikov leg.; SMNH. GoogleMaps

Paratype

KYRGYZSTAN • 1 ♂; same collecting data as for preceding, Orto-Sai Canyon , 2.5 km S of Bishkek; 42°47.7′ N, 74°36.2′ E; 1050 m a.s.l.; SMNH GoogleMaps .

Additional material (5 juvs)

KAZAKHSTAN • 1 juv.; foothills of Chu-Ili Mts , surroundings of Kordai Town; 43°02′ N, 74°43′ E; 600–700 m a.s.l.; 11 Jun. 1983; S. V. Ovchinnikov leg.; SMNH GoogleMaps .

KYRGYZSTAN • 1 juv.; foothills of Kyrgyz Mts, Alamedin Canyon, 12 km SE of Bishkek, environs of Koi-Tash Village ; 42°43′ N, 74°40′ E; 1300 m a.s.l.; 20 Jul. 1978; S. Zonstein leg.; SMNH GoogleMaps • 2 juvs; Chu Valley , bank of Ala-Archa River , 1 km N of Bishkek; 42°57′ N, 74°34.5′ E; 700 m a.s.l.; 5 Apr. 1983; S. Zonstein and S. V. Ovchinnikov leg.; SMNH GoogleMaps • 1 juv; foothills of Kyrgyz Mts (northern slope), Jardy- Kaindy Canyon , 80 km WSW of Bishkek; 42°41′ N, 73°37′ E; 1200 m a.s.l.; 11 Jun.1985; S. Zonstein leg.; SMNH GoogleMaps .

Description

Male (holotype)

HABITUS. See Fig. 26. View Figs 19–27

MEASUREMENTS. TBL 9.10, CL 4.03, CW 3.52, LL 0.37, LW 0.78, SL 2.12, SW 1.84.

COLOUR. Entire cephalothorax, palps and legs pale orange; carapace and chelicerae slightly darker, light brownish orange; eye tubercle dark brown to brownish black; abdomen uniformly pale greyish white, without dorsal pattern; spinnerets very pale greyish yellow.

CEPHALOTHORAX. Carapace and chelicerae as shown in Fig. 106 View Figs 100–108 . Clypeus and eye group as in Fig. 161 View Figs 160–171 . Eye diameters and interdistances: AME 0.12(0.16), ALE 0.19, PLE 0.11, PME 0.09; AME–AME 0.14(0.10), ALE–AME 0.06(0.04), ALE–PLE 0.05, PLE–PME 0.04, PME–PME 0.30. Anterior cheliceral edge with unmodified setae; rastellum absent. Each cheliceral furrow with 10–11 promarginal teeth and 4 mesobasal denticles. MIT indiscernible. Sternum, labium and maxillae as shown in Fig. 225 View Figs 220–228 . Maxillae with 12–13 cuspules each.

LEGS. Tibia and metatarsus I as in Fig. 284 View Figs 282–289 . Scopula: entire and distal on metatarsi I–II; entire on tarsus I; narrowly divided with setae on tarsus II; widely divided on tarsus III; sparse and rudimentary on tarsus IV. Trichobothria: 2 rows of 8–9 each on tibiae, 8–11 on metatarsi, 10–12 on tarsi, 8 on cymbium. PTC I–IV with 8 and 8–10 teeth on outer and inner margins, respectively. SPINATION. Palpal patella, patellae I–II, and tarsi I–IV aspinose. Palp: femur d2, pd2, rd2; tibia d4, pv3, r2, v5; tarsus d5. Leg I: femur d4, pd2, rd2; tibia p2, r2, pv2, rv2+2M; metatarsus v1. Leg II: femur d4, pd2; tibia p3, v7; metatarsus p1, v6. Leg III: femur d4, pd3, rd2; patella p2, r2(1); tibia d3, p3, r3, v7; metatarsus d3, p4, r3, v7. Leg IV: femur d4, pd3, rd2; patella p2 r2(1); tibia d1, d3(2), p3, r4, v7; metatarsus d3, p3, r3(1), v8(6).

PALP. Tibia, cymbium and copulatory bulb as shown in Fig. 375 View Figs 364–378 . Embolus long, tapering and slightly curved subapically ( Figs 450–452 View Figs 448–456 ).

SPINNERETS. See Fig. 612 View Figs 611–618 . PMS: length 0.18, diameter 0.07. PLS: maximal diameter 0.33; length of basal, medial and apical segments 0.90, 0.57, 0.52; total length 1.99; apical segment digitiform.

Female

Unknown.

Variation

Carapace length in the male paratype 3.68. The variation in habitus and the structure of the male tibia and metatarsus I, and the copulatory bulb, as shown in Figs 27 View Figs 19–27 , 285 View Figs 282–289 and 453 View Figs 448–456 .

Ecology

Unlike most species of the group, Raveniola ovchinnikovi sp. nov. occurs in a subarid low-altitude zone of intermontain valleys and in dry low foothills, where it inhabits steppe biotopes on the loess substrate. All spiders were collected from cavities and cracks in the clay precipices or from abandoned rodent burrows.

Distribution

The northernmost part of Kyrghyztan and the adjoining territory of southeastern Kazakhstan: the Chu Valley and the adjoining foothills of Kyrgyz and Chu-Ili Mts. See Fig. 759 View Figs 751–760 .