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 rochesterae
,
new species
Figures 23
,
161–165
, map 5
TYPES:
AUSTRALIA
:
Queensland
:
Male
holotype
from
Mazeppa National Park
, S
end, 22
°
16
9
19
0
S
, 147
°
16
9
00
0
E
,
240 m
(
18 Dec. 2000
,
G. Monteith
) (PBI_OON 00007072), deposited in QM (
S78721
).
Female
allotype
collected with holotype (PBI_OON 00023348), deposited in QM (
S86477
)
.
ETYMOLOGY: The specific name is a patronym in honor of Renee Rochester, a supporter of spider taxonomy.
DIAGNOSIS: Males of
C. rochesterae
resemble those of
C. heywoodi
, with the sternal concavity occupying about
K
of the sternal length and
O
of the sternal width (fig. 23), and the epigastric scutum slightly protruding. Males of
C. rochesterae
have larger eyes, short medially directed fangs not reaching the labium (fig. 23), and a long tripartite embolus (figs. 161–163). Females can be easily distinguished by the epigynal semicircular rim and a dark triangular region, with the copulatory duct short, not reaching the tracheal groove (figs. 164, 165).
MALE: Total length 1.17. Carapace 0.52 long, 0.42 wide; abdomen 0.65 long, 0.38 wide. Carapace, sternum, mouthparts, and abdominal scutae orange-brown, legs yellow. Sternum as long as wide with median concavity occupying about
K
of sternal length and
O
of sternal width (fig. 23). Cheliceral fangs short, medially directed, not reaching labium, tip not widened; endite with additional toothlike projection dorsally. Abdomen ovoid, epigastric scutum slightly protruding. Cymbium-bulb complex square with additional cymbial prodistal tooth, embolus with three prongs, prolateral one acute and longest, median one half as long, retrolateral one about
O
as long as prolateral prong (figs. 161–163).
Figs. 166–170.
Cavisternum toadshow
,
new species
.
166–168.
Male palp (PBI_OON 06053).
166.
Prolateral view.
167.
Retrolateral view.
168.
Dorsal view.
169
,
170.
Female epigyne (PBI_OON 06053).
169.
Ventral view.
170.
Dorsal view.
FEMALE: Total length 1.33. Carapace 0.52 long, 0.42 wide; abdomen 0.81 long, 0.37 wide. Coloration as in male. Epigastric area with semicircular rim, reaching apodemes laterally, and a dark triangular region, copulatory duct short, not reaching tracheal groove (figs. 164, 165).
DISTRIBUTION: This species is known only from Mazeppa National Park in mideastern
Queensland
(map 5).