New species of tube web spiders of the genus Ariadna from South Australia (Araneae, Segestriidae)
Author
Marsh, Jessica R.
Author
Baehr, Barbara C.
Author
Glatz, Richard V.
Author
Framenau, Volker W.
text
Evolutionary Systematics
2018
2
2
137
149
http://dx.doi.org/10.3897/evolsyst.2.29172
journal article
http://dx.doi.org/10.3897/evolsyst.2.29172
2535-0730-2-137
D49CE72306C24E38B5B0C7C311C8A89E
Genus
Ariadna Audouin, 1826
Pylarus
Hentz, 1842 (synonymised in
Beatty 1970
)
Macedonia
Hogg, 1900 (synonymised in Rainbow 1911)
Segestriella
Purcell, 1904 (synonymised in
Beatty 1970
).
Remarks.
Ariadna
is distinguished from other segestriid genera by having a straight to slightly recurved posterior eye row (Figs 2A, 3A), a lateral transverse ridge basally on the chelicerae (Fig. 2A;
Giroti and Brescovit 2018
), a labrum extending past the labium (Figs 2B, 5B;
Giroti and Brescovit 2018
), and chelicerae with three promarginal and one retromarginal teeth (
Beatty 1970
). It is distinguished from
Citharoceps
by the lack of stridulatory organ, females lacking a median flap on the interpulmonary fold and by the length of the labium-sternum junction, which is longer than the length of the endite-sternum junction in
Citharoceps
(
Giroti and Brescovit 2018
).
Note.
Holotypes of
A. octospinata
, mature female (QM W2119) and
A. montana
, mature female (SAM NN179) were examined.