A Revision of Storenosoma Hogg and Description of a New Genus, Oztira (Araneae: Amaurobiidae)
Author
Milledge, G. A.
text
Records of the Australian Museum
2011
2011-06-29
63
1
1
32
http://dx.doi.org/10.3853/j.0067-1975.63.2011.1579
journal article
10.3853/j.0067-1975.63.2011.1579
2201-4349
5239311
Oztira aquilonaria
(Davies)
new combination
Figs 4a–c
,
6b
,
10a–d
,
26
Otira aquilonaria
Davies, 1986: 238–40
, figs 9–12, 31.
Type material examined
.
HOLOTYPE
♀
,
Cable Tower
3,
Bellenden Ker Range
, [
17°12'S
145°51'E
],
Queensland
,
17–24 Oct 1981
,
Earthwatch
/
Fig. 6. Tarsal organ and trichobothria.
(a, e–f)
Oztira affinis
(KS72948):
(a)
tarsus leg I;
(e)
tarsal organ and trichobothrial base,
(f)
tarsal organ ventral.
(b)
Oztira aquilonaria
(S1371): tarsus leg I.
(c, g–h)
Oztira kroombit
(
S30752
):
(c)
tarsus leg I,
(g)
tarsal organ and trichobothrial base,
(h)
tarsal organ ventral.
(d)
Oztira summa
(
S30776
) tarsus leg I.
Queensland
Museum Expedition
, litter,
1054 m
, (S 1368) (
QM
)
.
PARATYPES
:
2♀
, same data as holotype (S 1369)
.
1♂
,
1♀
, same data except,
25–31 Oct 1981
,
pitfall traps
(S 1371) (all QM)
.
Diagnosis
. Can be separated from
Oz. affinis
by the tarsal rod being elongate with keyhole shaped opening (
Fig. 6b
), by the male palpal trochanter having a single stridulatory spine and by the female epigynum having blunt lateral teeth (
Fig. 10c
); from
Oz. kroombit
by the male cymbium lacking apophyses and the gonopore openings on the female epigynum being fused (
Fig. 10c–d
); from
Oz. summa
by the form of the MA and the RTA, which has a prominent pointed dorsal apophysis, of the male palp (
Fig. 10a–b
) and by the posterior margin of the fused sclerotized gonopore openings of the female epigynum being entire (
Figs 10c–d
).
Fig. 7. Tarsal organ and trichobothria.
(a, e–f)
Storenosoma grayi
(KS69899):
(a)
tarsus leg I,
(e)
tarsal organ and trichobothrial base,
(f)
tarsal organ ventral.
(b, g–h)
Storenosoma altum
(KS37226):
(b)
tarsus leg I,
(g)
tarsal organ and trichobothrial base,
(h)
tarsal organ lateral.
(c, i)
Storenosoma hoggi
(K4097):
(c)
tarsus leg I,
(i)
tarsal organ and trichobothrial base.
(d, j)
Storenosoma bondi
(KS18071):
(d)
tarsus leg I,
(j)
tarsal organ and trichobothrial base.
Fig. 8. Tarsal organ and trichobothria.
(a, e)
Storenosoma forsteri
(KS52409):
(a)
tarsus leg I,
(e)
tarsal organ and trichobothrial base.
(b, f)
Storenosoma smithae
(ANIC, NSW, Mt Clarke, Mar 2004)
:
(b)
tarsus leg I,
(f)
tarsal organ and trichobothrial base.
(c, g)
Storenosoma tasmaniensis
(TMG147):
(c)
tarsus leg I,
(g)
tarsal organ and trichobothrial base.
(d, h)
Storenosoma victoria
(K4277):
(d)
tarsus leg I,
(h)
tarsal organ and trichobothrial base.
Description
.
Male
. Measurements: BL 3.06, CL 1.70, CW 1.16, PLE 0.21, PME 0.13 (QM, S 1371).
Female
. Measurements: BL 3.84, CL 1.76, CW 1.08, PLE 0.21, PME 0.15 (QM, S 1368). For morphological description see species diagnosis and generic description.
Distribution
. Known only from a single locality on Mt Bellenden Ker, north East
Queensland
(
Fig. 26
).
Remarks
. The right palp of the only known male is illustrated here although the tip of the embolus appears to be broken off. The left palp of this specimen is illustrated in an SEM image by Davies (1986, fig. 31). The view of the RTA illustrated by Davies (1986, fig. 11) is dorsal rather than retrolateral as stated. This species has a very restricted distribution and appears to be sympatric with
Oz. summa
. These two species are quite similar morphologically and probably closely related.
Milledge: Revision of
Storenosoma
spiders 11
Fig. 9.
Oztira affinis
.(a–b)
male palp (KS6995):
(a)
ventral,
(b)
RTA, retrolateral.
(c–d)
female genitalia:
(c)
epigynum,
ventral (
S30779
);
(d)
internal (KS28216). Scale lines
0.25 mm
.