On Old World ninetine spiders (Araneae: Pholcidae), with a new genus and species and the first record for Madagascar
Author
Huber, Bernhard A.
Author
El-Hennawy, Hisham K.
text
Zootaxa
2007
1635
45
53
journal article
10.5281/zenodo.179508
595c52e4-913c-45be-a3d6-d50ac8a18c8f
1175-5326
179508
Nita elsaff
n. gen.
, n. sp.
(
Figs. 1–16
)
Type
material.
Male
holotype
from El Saff (
29°57’N
,
31°28’E
), Giza,
Egypt
;
March 1, 2003
(M. Mohafez), in
ZFMK
(Ar 005).
Etymology.
The species name refers to the
type
locality and is used as a noun in apposition.
Diagnosis.
This species is very easily distinguished from all species of
Ninetis
, the only other African ninetine genus known. Unlike
Ninetis
species, which have either very simple and small procursi or (
N. russellsmithi
) no procursus at all, the present species has a complex and large procursus (
Figs. 3, 4
). All
Ninetis
species have a very distinctive bulb, with a long ventral apophysis and a dorsal projection that presumably contains the sperm duct (see
Fig. 18
). In contrast,
Nita elsaff
has a single cylindrical projection on the bulb (
Figs. 3, 4
). Moreover,
Nita elsaff
has a uniquely modified male clypeus (
Figs. 2
,
7
), while the clypeus of all known
Ninetis
species (and of all other known ninetines) is unmodified. Finally,
Nita elsaff
females have very distinct pore plates (
Fig. 6
), while pore plates are either absent, invisible, or extremely indistinct in
Ninetis
females. From other potentially close relatives (
Aucana
,
Chisosa
),
Nita
is easily distinguished by the modified male clypeus.
FIGURE 1.
Nita elsaff
n. sp.
, male dorsal view.
Male (
holotype
).
Total length 1.7, carapace width 0.76. Leg 1: 6.5 (1.73 + 0.30 + 1.80 + 2.03 + 0.63), tibia 2: 1.33, tibia 3: 1.07, tibia 4: 1.50. Tibia 1 length/diameter (L/d): 23. Habitus as
Fig. 1
; coloration mostly pale ochre-yellow, carapace with narrow median light brown stripe widening frontally to cover ocular area, abdomen monochromous grey. Ocular area slightly elevated; thoracic furrow present, indistinct and shallow; distance PME–PME 115 Μm; diameter PME 55 Μm; distance PME–ALE 20 Μm; distance AME–AME 25 Μm, diameter AME 40 Μm. Sternum wider than long (0.54/0.48), without frontal humps. Clypeus distinctively modified, with strong hairs situated on a median protrusion (
Figs. 2
,
7
); chelicerae with pair of distinctive frontal apophyses (
Figs. 2
,
8
), with stridulatory ridges (
Fig. 12
). Palps as in
Figures 3 and 4
; trochanter projecting ventrally but without distinct apophysis; femur, patella, and tibia widened but otherwise unmodified; procursus distinctive, strongly sclerotized, with small sclerotized flap proximally, long spine and further partly membranous flap (
Fig. 11
) distally; bulb with one cylindrical projection (presumably the embolus) ending in curved spine (
Figs. 3
,
10
); palpal tarsal organ exposed (
Fig. 9
). Legs without spines and curved hairs, few vertical hairs; retrolateral trichobothrium of tibia 1 at 57%, prolateral trichobothrium present on all legs; tarsus 1 with about 8 very indistinct pseudosegments. Male gonopore without epiandrous spigots (
Fig. 14
).
Variation.
Tibia
1 in
other males from
Egypt
: 1.57, 1.60; from
Uzbekistan
: 1.67.
Female.
In general similar to male, clypeus unmodified (
Fig. 13
). Tibia 1: 1.23, 1.50 (Cairo), 1.67 (El Saff). Epigynum large relative to abdomen, with distinctive pair of pockets and internal structures visible through cuticle (
Figs. 5, 6
,
15, 16
).
Distribution.
Known from two localities in the Cairo-Giza area,
Egypt
, and from
Uzbekistan
.
Material examined.
EGYPT
: El Saff, Giza:
type
above, together with 1Ψ (used for SEM), same data, in
ZFMK
. Cairo: Heliopolis (
30°06.7’N
,
31°17.8’E
), in a house,
January 19, 2004
, March 22 & 26, 2005 (H. El- Hennawy), 2ɗ1Ψ (1ɗ used for SEM) in
ZFMK
(Ar 006–8). Same locality,
February 10, 2004
(H. El-Hennawy), 1Ψ in pure ethanol, in
ZFMK
.
UZBEKISTAN
: Kaskadariya (Qashqadaryo) Region, Guzary Distr.,
11 km
SE Guzar [
38°33.1’N
,
66°21.4’E
], clayey waste ground,
Oct. 18, 1992
(A. A. Zyuzin), 1ɗ in
ZMMU
.