Revision of the Asian spider genus Pandava Lehtinen (Araneae: Titanoecidae): description of five new species and first record of Titanoecidae from Africa
Author
Almeida-Silva, Lina M.
Author
Griswold, Charles E.
Author
Brescovit, Antonio D.
text
Zootaxa
2010
2630
30
56
journal article
10.5281/zenodo.276087
38eecf64-5305-459a-8a52-a55b1a23153e
1175-5326
276087
Pandava
Lehtinen, 1967
Pandava
Lehtinen, 1967
: 255
, figs. 425–426, 440. Type-species by monotypy and original designation:
Amaurobius laminatus
Thorell, 1878
: 168
;
Lehtinen, 1967
: 255
;
Platnick, 2010
.
Diagnosis.
Males of
Pandava
differ from
Anuvinda
,
Goeldia
,
Nurscia
and
Titanoeca
by the reduced tegular process near the base of the embolus (
Figs. 16–17
); by the thumb-shaped median apophysis (
Fig. 17
), which is absent in
P
.
shiva
sp. nov.
(
Fig. 72
) and divided in all other
Titanoecidae
(
Griswold
et al.
2005
: 275, figs. 174B, 174C;
Almeida-Silva
et al.
2009a
: 365, figs. 2, 3;
Almeida-Silva
et al.
2009b
: 63, figs. 1, 2, 4). Females differ from other
Titanoecidae
by the anteriorly positioned epigynal rims (
Figs. 21
,
36
,
48, 50
,
56
,
73
,
88
,
90
,
99
,
101
,
103
), which sometimes cover the copulatory openings; epigynum round and elevated in the median region; spermathecae elongated and varying in number: more than six in
P. laminata
(
Figs. 22–25
,
37
),
P
.
ganesha
sp. nov.
(
Fig. 104
) and
P
.
sarasvati
sp. nov.
(
Figs. 89
,
91–93
); three or four in
Pandava ganga
sp. nov.
(
Fig. 100
) and
P. kama
sp. nov.
(
Fig. 102
), or reduced to a single lobe in
P. shiva
sp. nov.
(
Figs. 74–77
) and
P. hunanensis
(
Figs. 48–52
,
57
).
Description.
Total length (males and females): 4.00–8.60. Carapace: cephalic area high and thoracic fovea reduced (
Figs. 38, 39
,
46
). Eyes round, AME smaller than ALE, PME and PLE (
Figs. 40
,
47
). Cheliceral fang 1/3 the length of the paturon. Chilum entire, reduced, smaller than outer border of the median eyes and without setae (
Fig. 1
). Endites oblong, with regular serrula (
Fig. 2
), labium square (
Fig. 45
). Cheliceral promargin with three teeth, retromargin with two (
Fig. 97
) and retrolateral face with stridulatory setae (
Figs. 3
,
98
). Anterior border of sternum straight, laterally round and posteriorly acute, projecting between coxae IV (
Fig. 45
). Leg formula variable but always with leg III shortest. One spine distally positioned on prolateral surface of femur I and II, except in
P. s h i v a
sp. nov.
and
P. hunanensis
.
Distribution and presence of other spines variable. Male tibial crack, when present, positioned after the first spine of tibiae I and II as described by
Griswold (1993: 2, figs. 3–4)
in
Zoropsidae
and
Zorocratidae
(
Griswold
et al.
2005
: 242, fig. 141F), and by
Almeida-Silva
et al.
(2009b)
for
Anuvinda
. Prolateral surface of the palpal femur with stridulatory files (
Figs. 4–5
,
19–20
). Tarsal claw with 10 to 14 narrow denticles (
Figs. 6
,
94
). Tarsal organ of the male palp on the prolateral distal part of the cymbium, with transverse ridges (
Fig. 7
). Tarsal organ of legs and female palp capsulate, with small, round opening (
Fig. 8
). One single metatarsal trichobothrium with transverse ridges on basal hood (
Fig. 9
), trichobothria absent from tarsi. All leg claws with multiple teeth including three to four denticles on the third claw (
Figs. 10
,
95–96
). Calamistrum uniseriate and extending the entire length of metatarsus IV (
Figs. 11–12
). Distally curved setae present on femur, tibia and metatarsus of some males (
Figs. 13–14
) as in
Anuvinda
(
Almeida-Silva
et. al
. 2009b
: 64, figs. 8–9) and also in females of
Pandava ganga
sp. nov.
Abdomen oval. Cribellum divided, as broad as spinneret area (
Figs. 27–28
,
78, 80
). Two major ampullate gland spigots (
Figs. 29
,
81
) and 21 to 38 piriform gland spigots (
Figs. 29
,
79, 81
) on the ALS, MAP recessed into PI spinning field; PMS with one mAP, six to 12 aciniform and two to three cylindrical gland spigots, paracribellar spigots absent (
Figs. 30
,
82
); PLS with four paracribellar, one to two cylindrical and 13 to 14 aciniform gland spigots (
Figs. 31–32
,
83
).
Palpal tibial apophysis with RLT ear-shaped; MLT divided, with an indistinct base; PLT divided as in
Pandava laminata
and
P. sarasvati
sp. nov.
(
Figs. 15
,
33, 35
,
84, 87
), or entire and enlarged as in
P. hunanensis
and
P. s h i v a
sp. nov.
(
Figs. 41, 43
,
53, 55
,
58–60
,
70, 72
). Prolateral face of femur with stridulatory files made up of small, round protuberances and with few setae (
Figs. 4–5
,
19–20
,
66–69
). Cymbium with prolateral furrow as an inverted “L” (
Figs. 15–16
,
33, 35
,
41, 43
,
55
,
70, 72
,
84, 87
). Median apophysis entire (
Figs. 15, 17, 18
,
33–35
,
42, 44
,
53–55
,
84–87
) or absent (
Figs. 61–63
). Tegular process reduced (
Figs. 16–17
,
35
,
44
,
55
,
72
,
87
). Spermatic duct bent once as an “S” (
Figs. 35
,
44
,
55
,
72
). Pars pendula very reduced. Tegular furrow typical of
Titanoecidae
(
Figs. 17
,
34
,
54
,
62–63
,
71
,
86
), serving as a resting place for the embolus. Embolus filiform (
Figs. 16–17
,
34
,
42, 44
,
54–55
,
71–72
,
86
).
Epigynum with copulatory openings and rim anteriorly positioned (
Figs. 21
,
36
,
48–50
,
56
,
73
,
88
,
90
,
99
,
101
,
103
). Copulatory ducts with pores (
Figs. 24–25
,
75– 76
,
93
). Fertilization duct filiform, may be partially covered by cuticle obscuring its connection with the spermathecae, e.g.,
Fig. 74
. Spermathecae elongated with lobes forming a bunch (
Figs. 22–25
,
37
,
89
,
91–93
) except in
P. s h i v a
sp. nov.
and
P. hunanensis
, whose spermatheca is limited to a single lobe (
Figs. 49, 51–52
,
57
,
74–77
). Spermathecae with two kinds of pores: one enlarged, with the edges covered by a folded tissue, here called giant pore (
Figs. 22–25
,
91–93
), which is located in the intersection among spermathecae and copulatory ducts; the other kind is a “primary pore” according to
Bennett (1992: 6 and 17, fig. 32)
which in
Pandava
is commonly located near the giant pore (
Figs. 75–77
), except in
P. s h i v a
sp. nov.
The primary pore is also found in other spiders (
Bennett, 1992
: 17, fig. 32;
Wang, 2002
: 16, fig. 41).
Remarks.
The homology of the
Pandava
giant pore with the so-called “dictynoid” pore described by
Bennett (1992)
is uncertain. The “dictynoid” pore has been described as a single, porous plate in the bottom of a shallow, circular concavity (
Bennett, 1992, figs. 2, 6
) or recessed into a deep hole (
Bennett, 1992, figs. 7, 9, 28
). The giant pore of
Pandava
is oblong and does not have an obvious flat poreplate. Notably, the “dictynoid” pore has not been described from
Dictyna
. Understanding the homology among such giant pores must await optimization of this character on a comprehensive phylogeny of the relevant taxa.
Geographical distribution.
Asia:
China
,
Japan
,
India
,
Indonesia
,
Myanmar
,
Pakistan
,
Philippines
,
Sri Lanka
,
Thailand
; Pacific: Marquesas Islands, New
Guinea
. Introduced in
Germany
. New records from Africa:
Kenya
,
Tanzania
and
Madagascar
.
Composition.
Seven species:
Pandava laminata
(
Thorell, 1878
)
;
P. hunanensis
Yin & Bao, 2001
;
P. shiva
sp. nov.
,
P. sarasvati
sp. nov.
,
P. ganga
sp. nov.
,
P. kama
sp. nov.
,
P. ganesha
sp. nov.