A New Genus Of Tetragnathid Spiders From Papua New Guinea (Aranei, Tetragnathidae)
Author
Marusik, Y. M.
Author
Omelko, M. M.
text
Vestnik Zoologii
2017
Vestn. Zool.
2017-06-27
51
3
203
214
http://dx.doi.org/10.1515/vzoo-2017-0027
journal article
10.1515/vzoo-2017-0027
97b55f6c-b168-4147-ba1f-771aef3a9a8d
2073-2333
6454189
0BB9A61D-45CB-4A36-87F3-B141517DD1A6
Nediphya lehtineni
sp. n
.
(
figs 1–5
,
12–13
,
16–31
,
34–39
,
43, 50–51
)
urn:lsid:zoobank.org:act:
68810199-5FA4-4779-AEE0-2D4F629438D9
Types.
Holotype
♂
:
Papua New Guinea
,
Morobe Prov.
,
Mt Kaindi
,
2350 m
,
vegetation
, 8–
10.03.1974
(
H. Hippa
) (
ZMUT
).
Paratypes
:
1 ♀
, same locality, in litter,
11.03.1974
;
1 ♀
, same locality, in hanging moss of cloud forest,
9.03.1974
(
P. T. Lehtinen
) (
ZMUT
)
.
Figs 1–8. Habitus of
Nediphya lehtineni
sp. n.
(1–5),
N. lyleae
sp. n.
(6),
N. hippai
sp. n.
(7) and
N. padillai
sp. n.
(8): 1 —male habitus, dorsal; 2, 6–8 — female habitus, dorsal; 3 — female prosoma, ventral; 4 — female prosoma, dorsal; 5 a, b — female leg I, a —dorsal and b —prolateral.
Diagnosis. Females of
N. lehtineni
sp. n.
differ from those of
N. lyleae
sp. n.
and
N. hippai
sp. n.
by having lateral dark bands on the carapace
vs
. sublateral in the other two species.
Nediphya lehtineni
sp. n.
can be distinguished from
N. padillai
sp. n.
(which has a similar carapace pattern) by the shape of the epigyne: the median plate in
N. lehtineni
sp. n.
is almost as long as wide
vs
. 3 times wider than long in
N. padillai
sp. n.
D e s c r i p t i o n. Male
holotype
. Total length 2.52, carapace 1.14 long, 0.95 wide. Carapace yellowish brown with wide dark brown lateral bands on thoracic part and thin light marginal stripe. Chelicerae yellow, with 3 prolateral and 3 retrolateral teeth. Sternum and maxillae yellow. Sternum subtriangular. Labium yellowish gray. Legs yellowish. Femora, tibiae, metatarsi grayish proximally. Abdomen with complicated pattern of spots and stripes dorsally and dark longitudinal stripes laterally.
Length of leg segments in ♂
Femur Patella Tibia Metatarsus Tarsus Total
I 1.91 0.47 1.97 2.04 0.86 7.23
II 1.37 0.45 1.31 1.38 0.63 5.13
III 0.81 0.29 0.60 0.62 0.38 2.69
IV 1.20 0.24 0.93 0.98 0.45 3.80
Leg spination in ♂
Femur Patella Tibia Metatarsus Tarsus
I 1d, 3p 1d 2d, 2r 1d –
II 1d 1d 2d, 1p, 1r 1d –
III 1d 2d 1d 1d, 1p –
IV 3d 2d 2d, 1p 1d –
Male palp as in
figs 16–31
,
34–39
and as described for genus.
Female. Total length 3.36, carapace 1.23 long, 0.95 wide. Coloration and chelicera as in male.
Length of leg segments in
♀
Femur Patella Tibia Metatarsus Tarsus Total
I 1.58 0.48 1.50 1.46 0.71 5.72
II 1.29 0.45 1.14 1.17 0.57 4.62
III 0.78 0.32 0.56 0.60 0.38 2.63
IV 1.16 0.33 0.90 0.90 0.44 3.72
Leg spination in
♀
Femur Patella Tibia Metatarsus I 1(0)p 1d 2p 1r II – 1d 1d 1p 1r III – 1d 1d 1p 1r 1d 1p 1r IV – 1d 2d 1p 1d 1p
Epigyne as in
figs 43, 50–51
, with subtriangular median plate slightly wider than long; copulatory ducts almost parallel, separated by less than one diameter; 2 pairs of receptacles visible through integument; vulva with round proper receptacles (
Re
) and 2 weakly sclertozied pairs of anterior receptacles, one pair rounded (
Rr
) and the other pair elongated (
Er
).
Note. In
Nanometa
sp.
,
Álvarez-Padilla & Hormiga (2011)
interpreted the anterior pairs of receptacles as being part of the copulatory ducts.
Distribution. The new species is known only from the
type
locality where
Nediphya hippai
sp. n.
is also known to occur.
Etymology. The species name is a patronym in honour of our senior colleague Pekka Lehtinen (Turku,
Finland
) who collected the
holotype
as well as specimens of the other three species of
Nediphya
gen. n.