The Goblin Spiders of the New Endemic Australian Genus Cavisternum (Araneae: Oonopidae)
Author
Baehr, Barbara C.
Author
Harvey, Mark S.
Author
Smith, Helen M.
text
American Museum Novitates
2010
2010-03-04
3684
1
40
http://www.bioone.org/doi/abs/10.1206/667.1
journal article
10.1206/667.1
0003-0082
5358760
C6A064BB-45E2-494A-935D-D7797D6E7BCC
Cavisternum bagleyae
,
new species
Figures 10
,
84–86
, map 6
TYPE:
AUSTRALIA
:
Queensland
:
Male
holotype
from just west of
Gilliat Creek
,
25 km
SE of McKinlay
, 21
°
24
9
18
0
S
,
Figs. 58–62.
Cavisternum clavatum
,
new species
, tarsal claws.
58.
Female (PBI_OON 04903), leg I. 59.
Male (PBI_OON 04906), leg I.
60.
Male, leg II.
61.
Male, leg III.
62.
Male, leg IV. Scales:
2
m
m.
Figs. 63–66.
Cavisternum clavatum
,
new species
, male metatarsal trichobothria (PBI_OON 04906). 63.
Leg I.
64.
Leg II.
65.
Leg III.
66.
Leg IV. Scales:
2
m
m.
Figs. 67–70.
Cavisternum clavatum
,
new species
. tarsal organ, dorsal view.
67.
Female (PBI_OON 04903), leg I.
68.
Male (PBI_OON 04906), leg I.
69.
Male, leg IV.
70.
Male, palp (arrowed). Scales: figs. 67– 69, 2
m
m; fig. 70, 20
m
m.
141
°
32
9
00
0
E
,
202 m
(
29 June–8 Sep. 2006
,
R. Raven
,
B. Baehr
,
A. Amey
) (PBI_OON 00006235), deposited in QM (S75302)
.
ETYMOLOGY: This specific name is a patronym in honor of Alison Robyn Mellor, née Bagley, so her maiden name may live on in a manner that reflects her love of nature.
DIAGNOSIS: Males of
C. bagleyae
resemble those of
C. barthorum
, with the sternal concavity occupying the whole sternal length (fig. 10) and the epigastric scutum not protruding. In males of
C. bagleyae
, the cheliceral fangs are shorter, directed medially, and the ventral patch of sternal setae is more rectangular anteriorly (fig. 10).
MALE: Total length 1.11. Carapace 0.50 long, 0.39 wide; abdomen 0.61 long, 0.28 wide. Carapace, sternum, mouthparts, and abdominal scutae pale orange, legs yellow. Sternum longer than wide with field of clavate setae covering about
4
=
5
of sternal length and about
K
of sternal width, bare median band elongate oval, anterior margin rectangular (fig. 10). Cheliceral fangs short, not reaching labium, directed medially, tips not distally widened. Abdomen cylindrical, epigastric scu-
Figs. 71, 72.
Cavisternum clavatum
,
new species
, claws, lateral view.
71.
Female (PBI_OON 04903), leg I.
72.
Male (PBI_OON 04906), leg I. Scales:
10
m
m. tum not protruding. Cymbium-bulb complex ovoid with slim, medially bent embolus incised at base retro- and prolaterally (figs. 84–86).
Figs. 73–76.
Cavisternum clavatum
,
new species
, spinnerets (PBI_OON 04903).
73.
Female, whole spinneret field.
74.
Female, right field, detail.
75.
Male, whole spinneret field.
76.
Male, right field, detail. ALS, anterior lateral spinneret; PLS, posterior lateral spinneret; PMS, posterior median spinnerets. Scales: 10
m
m.
Figs. 77–81.
Cavisternum clavatum
,
new species
, male palp (PBI_OON 04906).
77.
Prolateral view.
78.
Dorsal view.
79.
Retrolateral view.
80.
Embolus, prolateral view.
81.
Embolus, retrolateral view. Scales: 10
m
m.
Figs. 82, 83.
Cavisternum clavatum
,
new species
, female epigyne (PBI_OON 04906).
82.
Ventral view.
83.
Dorsal view, CD, copulatory duct; EF, epigastric fold; GR, groove between tracheal spiracles; TS, tracheal spiracles.
Figs. 84–86.
Cavisternum bagleyae
,
new species
, male palp (PBI_OON 06235).
84.
Prolateral view.
85.
Retrolateral view.
86.
Dorsal view.
FEMALE: Unknown.
DISTRIBUTION: This species is known only from the
type
locality in midwestern
Queensland
(map 6)
.