Revisions of Australian ground-hunting spiders. V. A new lycosoid genus from eastern Australia (Araneae: Tengellidae)
Author
Raven, Robert J
text
Zootaxa
2012
3305
28
52
journal article
10.5281/zenodo.280955
7b4f10a5-0ba2-4f84-bef8-e251419f6a93
1175-5326
280955
Austrotengella hebronae
,
sp. nov.
(
Figs 3
,
6
c, d)
Material examined:
Holotype
:
female, Mt Boss State Forest (valley),
31°12'S
152°24'E
, New South
Wales
,
Oct 1980
, G. A. Webb, AM KS 42851.
Diagnosis:
The female differs from those of
A. wrighti
by the more anterior position of the epigynal teeth, the relatively narrower median plate and the recurved angular ridge posteriorly on the plate. Males are unknown.
Etymology:
In honour of Mrs Wendy Hebron, for her much appreciated support in illustration, sorting and collection management.
Description
(
Holotype
female AM KS42851)
Carapace
4.68 long, 3.12 wide. Abdomen damaged.
Colour
. Carapace yellow brown with slightly darker markings medially. Abdomen colour and pattern faded.
Spines
. I: femur pv2p2r3; tibia p2r2pv5rv5; me p1r
1v
2.2.2. II: femur pv1p3d3r3; tibia p2r1pv5 rv5; me p1r
1v
2.2.2. III: fe pv1p3d3r4; ti p2d2r
2v
2.2.2; me p3r
3v
2.2.2. IV: fe p4d3r2; ti p2d2r
2v
2.2.2; me p3r
2v
2.2.2. Palp: fe p1d1.2; ti pv1d1.2r1; ti p2pv1 very long; ta p1r2, two basal very long.
FIGURE 7.
Austrotengella monteithi
,
sp. nov.
, holotype male QM
S57227
, palpal tibia, cymbium and bulb: ventral view (a) and retrolateral view (b).
Claws
. Paired claws long, slender curved with 2–3 small teeth basally; on leg IV, very long. Third claw long, distinct, bare.
Spinnerets
. 5–6 large conical spigots dorsolaterally on PMS; PMS themselves, as long as PLS, conical.
Epigyne
. Broad, ventrally domed, heart-shaped plate with narrow septum anteriorly; posterolaterally with transverse tooth on each side, teeth subdistal, just posterior of widest point of median plate and clearly separated from epigastric groove; teeth short and directed downward, posteriorly and medially. Recurved angular ridge posteriorly on plate.
Distribution:
Known only from Mt Boss State Forest, northern New South
Wales
. This is the southern-most record of this genus.
Leg measurements of
Austrotengella hebronae
,
holotype
female
Austrotengella monteithi
,
sp. nov.
(
Figs 3
,
7
a, b, 8a–f, 9a–c, 10a, b)
| I |
II |
III |
IV |
Palp |
| Femur 4.75 |
4.75 |
4.06 |
5.00 |
1.50 |
| Patella 2.19 |
2.13 |
1.81 |
1.81 |
0.94 |
| Tibia 4.75 |
4.44 |
3.81 |
4.75 |
1.31 |
| Metatarsus 3.94 |
3.94 |
4.38 |
5.69 |
0.00 |
| Tarsus 2.19 |
2.13 |
2.00 |
2.13 |
1.56 |
| Total 17.81 |
17.38 |
16.06 |
19.38 |
5.31 |
Material examined:
Holotype
:
male, Cooran Tableland (barracks),
26°17'S
152°49'E
, SE.QLD:
1 male
,
12 Apr 1995
, G.Monteith, K. Koch, G. Thompson (QM
S57227
).
Paratypes
:
Cooran Plateau, via Traveston,
26°20'S
152°47'E
, rainforest, pitfall:
1 female
,
9 Nov–31 Dec 1974
, G. and S. Monteith (QM
S33221
);
2 females
,
28 Mar–13 Aug 1975
, G. and S. Monteith (QM
S14186
=allotype, plus one for juvenile); Cooloola, Lake Poona,
26°12'S
153°03'E
, SE.Q,
April 1979
, G. Monteith (QM
S72310
); Enterprise Mine, North Stradbroke I, Blackbutt #1,
27°33'S
153°27'E
, blackbutt, pitfall:
1 male
,
22–23 Jan 2002
, D.J. Cook (QM
S56470
);
1 male
,
8–22 Jan 2002
, Queensland Museum Party (QM
S55776
);
1 male
, 0.5k N Cooran Tableland (barracks),
26°17'S
152°50'E
, SE.QLD,
16 Jan–27 May 2002
, flight intercept, rainforest, G.Monteith (QM
S86414
).
Etymology:
In honour of Dr Geoff Monteith without whose strident activities over the past 35 years the invertebrate fauna of eastern
Australia
would be much more poorly known.
Diagnosis:
Males differ from those of
A. toddae
in smaller subbasal mounds on RTA and relatively broader median apophysis, and from those of
A. hackerae
in the broad retrobasal cymbial flange, distinct retrodorsal cymbial cone, and the ventral groove of the embolus is open only on the tip. Females differ from thoose of
A. hackerae
in the shorter more deeply recurved invagination on the posterior septum and relatively broader anterior portion of the anterior septum.
Description
(
Holotype
male QM
S57227
)
Caparace 4.43 long, 3.58 wide. Abdomen 3.69 long, 2.27 wide.
Colour
. Pattern on carapace and abdomen similar to
A. hackerae
(
Fig. 4
).
Palp
. RTA subdistal with simple single apex with two small mounds subdistally of tip; ventral tibia-cymbial interlocking process distinct; lateral one not so evident; basodorsal cymbium rounded, not posteriorly projected (
Fig. 7
b
cf
. 5e); median apophysis large, origin is central on tegulum; similar in overall length to bluntly tipped embolus; longitudinal extents overlap by 30–50%. Ventral groove of embolus closed for almost its entire length, only open near the tip.
Leg measurements of
Austrotengella monteithi
,
holotype
male
| I |
II |
III |
IV Palp |
| Femur 4.38 |
4.13 |
3.44 |
4.06 1.13 |
| Patella 1.63 |
1.50 |
1.19 |
1.31 0.69 |
| Tibia 4.69 |
3.94 |
2.88 |
3.63 0.75 |
| Metatarsus 4.63 |
3.50 |
3.19 |
4.69 0.00 |
| Tarsus 2.00 |
1.75 |
1.63 |
1.81 0.50 |
| Total 17.31 |
14.81 |
12.31 |
15.50 3.06 |
Description
(Allotype female QM
S14186
)
Caparace 3.99. long, 3.65 wide. Abdomen 4.40 long, 3.05 wide.
Colour
(formalin-fixed). Carapace orange brown with brown edges and broad brown "donut" area around fovea and caput, central pallid zone in two parts, yellow ovoid area behind eyes and trianguloid area around fovea.
FIGURE 8.
Austrotengella monteithi
,
sp. nov.
, male palp, QM
S36414
, scanning electron micrograph: a, cymbium and bulb, ventral view; b, distal tibia and basal cymbium, retroventral view; c, tibia, cymbium and bulb, retroventral view; d, distal tibia and basal cymbium, retrodorsal view; e, tibia and cymbium, dorsal biew; f, lamellate apices of tibial apophysis, retrolateral view.
FIGURE 9.
Austrotengella monteithi
,
sp. nov.
, male palp, QM
S36414
, scanning electron micrograph: a, tip of embolus, showing ventral opening; b, tibial apophysis, retrolateral view.
FIGURE 10.
Austrotengella monteithi
,
sp. nov.
, allotype female QM
S14186
, epigyne: external (a) and internal (b) views.
Chelicerae orange brown; coxae pallid, dorsally with wide median dark stripe. Legs with 3 irregular annulations on femora, otherwise dark orange brown. Abdomen collapsed, venter mottled pallid, marginally mottled.
Carapace
. Glabrous except for pile of long white hairs in head region and around eyes.
Eyes
. From above, configuration is 2.4.2. AER recurved from above. PER in two separated rows.
Spines
. Femora: I, fe pv2 strong p3d2r2; II, pv2 weak p2d3r4; III, p4d3r4; IV, p3d3r2; palp, p1d1.2. Patellae, I, II, 0; III, IV, palp, d1. Tibiae: I, II v2.2.2.2.2 + 2 distal; III, IV, p2d2r
2v
2.2.2; palp, p2d1. Metatarsi: I, II, v2.2.2; III, p2r
3v
2.2.2; IV, p2r
1v
2.1.2.3. Palpal tarsus, p2.1d1r
1v
2.
Claws
. Long, curved with 3–4 small teeth basally. Palpal claw long with 3 basal teeth.
Spinnerets
. Invaginated.
Leg measurements of
Austrotengella monteithi
, allotype female
Epigyne
. Long rectanguloid plate with short narrow septum anteriorly; septum quickly widens to cordiform, posterolaterally with transverse tooth on each side, teeth subdistal, just posterior to widest part of median plate, well back from epigastric groove; teeth short, directed diagonally and medially. Posterior margin of septum with broad shallow recurved ridge.
| I |
II |
III |
IV |
Palp |
| Femur 2.58 |
2.50 |
2.38 |
2.85 |
0.86 |
| Patella 1.29 |
1.25 |
0.78 |
1.02 |
0.55 |
| Tibia 2.58 |
2.34 |
1.95 |
2.50 |
0.66 |
| Metatarsus 2.23 |
2.11 |
2.07 |
3.13 |
0.00 |
| Tarsus 1.05 |
1.09 |
1.09 |
1.29 |
0.98 |
| Total 9.73 |
9.30 |
8.28 |
10.78 |
3.05 |
Distribution and Habitat
. Known only from rainforest on the Cooran Plateau, and coastal rainforests at Cooloola and North Stradbroke
Island
, southeastern Queensland.