New Chummidae (Araneae): quadrupling the size of the clade
Author
Jocqué, Rudy
Author
Alderweireldt, Mark
text
European Journal of Taxonomy
2018
2018-03-13
412
1
25
journal article
22340
10.5852/ejt.2018.412
49d1e797-32b4-414b-a993-63ec0110d8db
3806047
F682863D-C20B-4DE7-97B9-4EB0D4E20649
Chumma tsitsikamma
sp. nov.
urn:lsid:zoobank.org:act:
A9071899-EE0D-4AF2-B73A-F3039827CE96
Figs 10
A–C, 11A–E, 12
Diagnosis
Males of
C. tsitsikamma
sp. nov.
are recognized by the dorsal bifid RTA with a sharp spur pointing up and backward, and by the solid embolus pointing down.
Etymology
The specific epithet is a noun in apposition taken from the
type
locality.
Material examined
Holotype
SOUTH AFRICA
: ♂,
Eastern Cape Province
,
Tsitsikamma National Park
,
34°00.742′ S
,
23°52.282′ E
, high moisture coastal forest,
24 Dec. 2011
,
J.A. Neethling
and
C. Luwes
leg. (
NCA 2012
/4034).
Paratypes
SOUTH AFRICA
: 3 ♂♂, same collecting data as for
holotype
(
NCA
2015/4659).
Description
Male
BODY MEASUREMENTS. TL 2.57, CL 1.10, CW 1.00,
CH
0.50.
CARAPACE. Pale yellow with slightly darker striae and cephalic area; chelicerae, legs and sternum pale yellow (
Fig. 11
A–B).
ABDOMEN. With pale brown scutum, strongly narrowed in front; anterior third with supple setae, the frontal rows with sockets in front of pale circle; scutum with four impressed apodemes and two dorsal and two lateral depressions; sides and venter white, with two rows of apodemes.
EYES. AME: 0.20; ALE: 0.33; AME–AME: 0.07; AME–ALE: 0.03; PME: 0.30; PLE: 0.33; PME–PME: 0.17; PME–PLE: 0.07. Clypeus 0.27 or 0.82 times width of ALE.
STERNUM. Length 1.83, width 1.77, almost as long as wide.
LEGS. Anterior pairs of tarsi fusiform. PALP (
Figs 10
A–C, 11C–E). Tibia with two apophyses: dorsal one flat, truncated, at its base with sharp spur pointing up and backward; ventral one robust, short with concave ventral side; tegulum with short retrolateral and ventral protrusions; embolus solid, twisted, sharp prong, pointing ventrad.
LEG MEASUREMENTS.
Fe
|
P
|
Ti
|
Mt
|
T
|
Total
|
I
|
1.00 |
0.33 |
0.97 |
0.83 |
0.63 |
3.77 |
II
|
0.90 |
0.33 |
0.73 |
0.70 |
0.50 |
3.17 |
III
|
0.77 |
0.33 |
0.50 |
0.63 |
0.33 |
2.57 |
IV
|
1.17 |
0.37 |
0.87 |
1.07 |
0.53 |
4.00 |
Fig. 10.
Chumma tsitsikamma
sp. nov.
, holotype, ♂
A
. Palp, ventral view.
B
. As preceding, retrolateral view.
C
. Palpal tibia, dorsal view. Scale bars: 0.2 mm.
Female
Unknown.
Note
It is not impossible that the females here described as
C. bicolor
sp. nov.
belong to the same species. The difference in habitus and mainly the absence of black patches in
C. tsitsikamma
sp. nov.
made us decide to keep them apart.
Fig. 11.
Chumma tsitsikamma
sp. nov.
, holotype, ♂.
A
. Habitus, dorsal view.
B
. Anterior part of abdomen, dorsal view.
C
. Palp, dorsal view.
D
. As preceding, ventral view.
E
. As preceding, retrolateral view. Scale bars: A–B = 0.5 mm; C–F = 0.2 mm.
Distribution
Known from the Tsitsikamma National Park in the
Eastern Cape Province
in
South Africa
(
Fig. 12
).