Raveniola insolita, 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 : 36-37

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/A3E8F4A4-7067-4053-A329-41992E5E26D9
taxon LSID	lsid:zoobank.org:act:A3E8F4A4-7067-4053-A329-41992E5E26D9
treatment provided by	Plazi
scientific name	Raveniola insolita
status	sp. nov.

Treatment

Raveniola insolita sp. nov.

urn:lsid:zoobank.org:act:A3E8F4A4-7067-4053-A329-41992E5E26D9

Figs 10 View Figs 10–18 , 92 View Figs 91–99 , 146 View Figs 136–147 , 211 View Figs 211–219 , 268 View Figs 265–273 , 360 View Figs 349–363 , 409–411 View Figs 409–417 , 575 View Figs 575–583 , 677, 752

Diagnosis

Habitually, as well as in the structure of the copulatory bulb, the only known male of Raveniola insolita sp. nov. resembles males of R. alajensis sp. nov. and R. cucullata sp. nov. ( Figs 10 View Figs 10–18 , 411 View Figs 409–417 cf. Figs 4–6 View Figs 1–9 , 387 View Figs 379–388 , 393–396 View Figs 389–399 ). However, it differs from the two latter species in having either a noticeably thinner proximal section of the embolus, additionally lacking a raised keel, or a considerably longer palpal tibia, compared with R. alajensis and R. cucullata , respectively (vs a thicker embolus provided with a long raised keel and a clearly shorter palpal tibia; see Figs 360 View Figs 349–363 , 409–410 View Figs 409–417 cf. Figs 352, 354–355 View Figs 349–363 , 385–386 View Figs 379–388 ).

Etymology

The specific epithet ‘ insolita ’ is a Latin adjective (of the feminine gender) that means ‘odd, different, unusual’ and refers to the unusual male characters of the holotype (which are intermediate between those in Raveniola alajensis sp. nov. and R. cucullata sp. nov., although the two latter species are not very closely related to one another).

Material examined

Holotype

TAJIKISTAN • ♂; Peter I Mts, environs of Yashilkul (also Yashnylkul) Lake; ca 39°07′ N, 71°18′ E; 3300–3400 m a.s.l.; 29 Jul. 1891; B. Grąbczewski leg.; ZISP. GoogleMaps

Description

Male (paratype)

HABITUS. See Fig. 10. View Figs 10–18

MEASUREMENTS. TBL 14.65, CL 6.58, CW 5.70, LL 0.49, LW 1.03, SL 3.38, SW 2.92.

COLOUR. Carapace, palps and legs dark foxy brown (legs I–II slightly darker than palps and legs III– IV); eye tubercle blackish brown; chelicerae medium reddish brown; sternum, labium, maxillae and abdomen including spinnerets paler yellowish brown; darker chevron-like dorsal abdominal pattern medium brown.

CEPHALOTHORAX. Carapace and chelicerae as shown in Fig. 92 View Figs 91–99 . Clypeus and eye group as in Fig. 146 View Figs 136–147 . Eye diameters and interdistances: AME 0.18(0.23), ALE 0.26, PLE 0.19, PME 0.18; AME–AME 0.16(0.11), ALE–AME 0.13(0.11), ALE–PLE 0.13, PLE–PME 0.05, PME–PME 0.42. Anterior cheliceral edge with 30–35 slightly thickened spikes. Each cheliceral furrow with 8 promarginal teeth and 3–4 mesobasal denticles. MIT indiscernible. Sternum, labium and maxillae as shown in Fig. 211 View Figs 211–219 . Maxillae with 30–31 cuspules each.

LEGS. Tibia and metatarsus I as in Fig. 268 View Figs 265–273 . Scopula: entire distal on metatarsi I–II; entire on tarsi I–II; narrowly divided with setae on tarsus III; sparse and widely divided on tarsus IV. Trichobothria: 2 rows of 8–10 on tibiae, 14–18 on metatarsi, 15–16 on tarsi, 8–9 on cymbium. PTC I–IV with 9–12 teeth on each margin.

SPINATION. Palp: femur d3, pd2; patella pd1; tibia d4, p3, r3, v6; cymbium d ~ 25 spikes. Leg I: femur d4, pd3, rd3; patella p2; tibia p2, pv3, r3, rv2+2M; metatarsus v1. Leg II: femur d4, pd3, rd2; patella p3; tibia p2, v8; metatarsus p4(3), v6. Leg III: femur d4, pd3, rd2; patella p3, r1; tibia d2, pd3, p4, r3, v7; metatarsus d3, p4, r4, v7; tarsus p1(0), r1(0). Leg IV: femur d4, pd3, rd2; patella p2, r1; tibia d2, p3, r4(3), v9; metatarsus d2, p4, r4, v8; tarsus p1, r1. Tarsi I–II aspinose.

PALP. Tibia, cymbium and copulatory bulb as shown in Fig. 360 View Figs 349–363 . Embolus with long basal portion provided with rudimentary keel and shorter hooked apical part ( Figs 409–411 View Figs 409–417 ).

SPINNERETS. See Fig. 575 View Figs 575–583 . PMS: length 0.52, diameter 0.17. PLS: maximal diameter 0.56; length of basal, medial and apical segments 0.98, 0.60, 0.52; total length 2.10; apical segment triangular.

Female

Unknown.

Ecology

Judging from the label data, the holotype male was collected in an alpine meadow-steppe biotope at 3300–3400 m a.s.l. (such as shown in Fig. 677 View Figs 675–682 ). Other details remain unknown.

Distribution

Tajikistan: the eastern part of Peter I Mts. See Fig. 752 View Figs 751–760 .