New species and interesting new records of spiders from Seychelles (Arachnida, Araneaea)
Author
Saaristo, Michael I.
text
Phelsuma
2002
10
1
32
journal article
32798
10.5281/zenodo.824148
79d22dc4-916c-4f10-a085-4b796c63dd68
1026-5023
824148
Ariadna ustulata
Simon, 1898
(
Figs. 79-83
)
Ariadna ustulata
Simon, 1898
:372 (Dj)
.
Material examined:
Mahé
,
holotype
, immature
female
(
ZMH
)
;
Silhouette
,
Mt. Dauban
, moss/litter
3juv.
, 0
9.07.2000
,
J. Gerlach
leg. (
MZT
AA 1.384
)
and
1f
,
09.08.2000
,
J. Gerlach
leg. (
MZT
AA 2.169
)
.
Diagnosis:
A. ustulata
is readily distinguished from all other Seychellian spiders by having six eyes in two rows, protruding chelicerae with strong, blunt-tipped lateral bosses, and distinct tracheal spiracles close to epigastric groove.
Description: Female (male unknown). This is a medium-sized (TL=4.6, CL = 2.38, CW = 1.54), dull coloured, relatively hairy species. Chelicerae black; carapace chestnut brown; sternum pale orange; abdomen dorsally dark brown, ventrally lighter; spinnerets pale yellow; legs pale orange, strongly suffused with black, especially femora which are almost totally black. Carapace densely covered with dark appressed hairs; abdomen sparsely clothed with long subdecumbent hairs in addition to the thick, appressed hairy coat; legs hairy with numerous, relatively short spines. In the middle of the epigyneal area a short, dark-coloured slightly convoluted streak.
Distribution: This is an endemic species ofwhich only the
type
specimen from Mahé was known previously. Now also collected on Silhouette.