A revision of the spider genus Raveniola (Araneae, Nemesiidae). II. Species from Central Asia
Author
Zonstein, Sergei L.
urn:lsid:zoobank.org:author:EADD3607-30FF-49AE-93F5-8410630469BE
Steinhardt Museum of Natural History, Tel-Aviv University, 69978 Tel-Aviv, Israel
znn@tauex.tau.ac.il
text
European Journal of Taxonomy
2024
2024-10-24
967
1
185
https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2699/12459
journal article
10.5852/ejt.2024.967.2699
2118-9773
13990819
C08B8027-50CC-417E-BCD4-5183B9FF6738
Raveniola caudata
Zonstein, 2009
Figs 1
,
82
,
136
,
202
,
256–257
,
349
,
379–380
,
555
, 619–621, 748–749
Raveniola caudata
Zonstein, 2009: 368
, figs 1, 3, 5–6, 8 (
♂
).
Raveniola caudata
–
Mikhailov 2013: 12
. —
Zonstein
et al.
2018
: fig. 167 (
♂
).
Diagnosis
The species differs from
Raveniola inopinata
sp. nov.
by having a considerably paler colour of ginger orange carapace and legs (which are dark sepia brown in the latter species; see
Figs 1 and 2
).
Raveniola caudata
can be distinguished from
R
.
redikorzevi
by its almost indistinct dorsal abdominal pattern. Males of
R
.
caudata
differ from males of the two other species of the group in having shorter laterodistal hair tufts on tarsi I–IV (
Fig. 257
cf.
Figs 259
,
324
) and by the shorter and less tapering proximal part of the embolus (
Figs 379–380
cf.
Figs 381–384
).
Material examined
Holotype
TAJIKISTAN
•
♂
;
Panj Karatau Mts, western slope of Mt Astana
,
2.8 km
WSW of summit;
37°22.8′ N
,
69°12.8′ E
;
1020 m
a.s.l.
;
24 Apr. 1991
;
S.V. Ovchinnikov
leg.;
SMNH
.
Additional material
(
1 ♂
,
1 juv.
)
TAJIKISTAN
•
1 juv.
;
Aruktau Mts, surroundings of Ganjina
;
37°58′ N
,
68°34′ E
;
700–800 m
a.s.l.
;
16 Apr. 1968
;
V.F. Bahvalov
leg.;
SMNH
•
1 ♂
(with both palps lost prior to collection);
Vahsh Karatau Mts
,
3 km
NW of Mt Hojamaston
;
38°01.4′ N
,
68°56.8′ E
;
940 m
a.s.l.
;
21 Apr. 1989
;
S. Zonstein
leg.;
SMNH
.
Description
Male
(
holotype
)
HABITUS
. See
Fig. 1.
MEASUREMENTS
. TBL 19.30, CL 7.13, CW 6.27, LL 0.57, LW 1.26, SL 3.52, SW 3.21.
COLOUR
. Carapace, palps and legs ginger orange; eye tubercle with central and two symmetrical lateral brownish-black spots surrounding AME and lateral eyes respectively; chelicerae cherry red; sternum, labium and maxillae light yellowish orange; metatarsi and tarsi gradually lighten toward apices; entire abdomen light yellowish grey, dorsally with almost indistinct darker pattern represented by few very weakly developed pairs of posteriorly-inclined greyish fasciae; spinnerets uniformly light yellowish grey.
CEPHALOTHORAX
. Carapace and chelicerae as shown in
Fig. 82
. Clypeus and eye group as in
Fig. 136
. Eye diameters and interdistances: AME 0.16(0.22), ALE 0.28, PLE 0.16, PME 0.12; AME–AME 0.16(0.10), ALE–AME 0.07(0.04), ALE–PLE 0.06, PLE–PME 0.04, PME–PME 0.43. Each cheliceral furrow with 10 promarginal teeth and 5 mesobasal denticles. MIT indiscernible. Sternum, labium and maxillae as shown in
Fig. 202
. Maxillae with 52–57 cuspules each.
LEGS
. Tibia and metatarsus I as in
Fig. 256
. Trichobothria: 2 rows of 9–12 each on tibiae, 13–15 on metatarsi, 15–18 on tarsi, 9–10 on cymbium. Scopula: distal ⅓ on metatarsi I–II, entire on tarsi I–II, widely divided by setae on tarsus III, absent on tarsus IV. Tarsi I–IV apically with very moderately dense lateral tufts of relatively short setae (
Fig 257
). Paired claws on tarsi I–IV with 8–11 teeth on each margin.
SPINATION
. Palp: femur d4, pd3, rd2; patella p2; tibia d4, p3, r2, v4; cymbium d6(5). Leg I: femur d4, pd3, rd3; patella p2; tibia p3(1), pv2(1), r2+2M; metatarsus v1a. Leg II: femur d4, pd3; patella p2; tibia p3, v8(6); metatarsus p1; v6. Leg III: femur d4, pd3, rd3; patella p2, r1; tibia d2, p2, r2, v7(5); metatarsus d2, p3, r2, v10(9). Leg IV: femur d4, pd4(3), rd3; patella p2, r1; tibia d3(2), p3, r3(2), v7; metatarsus d3, p3, r3, v10(9). Tarsi I–IV aspinose.
LEG
MEASUREMENTS
.
Femur
|
Patella
|
Tibia
|
Metatarsus
|
Tarsus
|
Total
|
Palp |
4.23 |
2.27 |
3.46 |
– |
1.35 |
11.31 |
Leg I |
6.32 |
3.65 |
5.03 |
5.27 |
3.10 |
23.37 |
Leg II |
6.22 |
3.23 |
4.98 |
5.02 |
3.03 |
22.48 |
Leg III |
5.55 |
2.88 |
4.10 |
5.87 |
3.27 |
21.67 |
Leg IV |
6.97 |
3.25 |
5.53 |
7.70 |
3.73 |
27.18 |
PALP
. Tibia, cymbium and copulatory bulb as shown in
Fig. 349
. Broadly tipped embolus with noticeably shortened basal part and with pronounced subapical keel (
Figs 379–380
).
SPINNERETS
. See
Fig. 555
. PMS: length 0.75; diameter 0.28. PLS: maximal diameter 0.65; length of basal, medial and apical segments 1.22, 0.85, 1.23; total length 3.30; apical segment elongate.
Female
Unknown.
Ecology
The species inhabits open shrubland and low forest biotopes with co-dominating
Pistacia vera
L.,
Cercis griffithii
Boiss.
,
Acer
spp.
and
Prunus
spp.
(see
Figs 619–620
). Males were found under rocks; the only juvenile specimen was found, according to the original label data, inside a gerbil’s burrow. The microbiotope situated directly in the type locality (shown in
Fig. 621
) is a pile of stones in the foreground, from where the
holotype
was collected in 1991. The corresponding photograph was taken in 2015.
Distribution
South
Tajikistan
, as shown in
Figs 748–749
. In the original description, the distance between the ridge summit and the
type
locality was indicated incorrectly (see
Zonstein 2009
).