On linyphiid spiders from Java, Indonesia, with the description of three new genera and four new species (Araneae: Linyphiidae)
Author
Tanasevitch, Andrei V.
text
Revue suisse de Zoologie
2020
2020-06-04
127
1
63
74
http://dx.doi.org/10.35929/rsz.0006
journal article
112237
10.35929/RSZ.0006
aaa42bc0-36c8-4e68-b62d-127535033b14
0035-418
5743519
FE0535B0-749B-4DBC-BA58-DF05F62EA77A
Javanaria
gen. nov.
Type
species:
Javanaria gracilipes
sp. nov.
Etymology:
The generic name is a combination of two words: “
Java
”, the “terra typica”, and a part of the generic name
Nasoonaria
. Males of
Nasoonaria
, like males of the
type
species of the new genus, have an extremely developed distal suprategular apophysis. The gender of the new name is feminine.
Diagnosis:
The genus contains large-sized erigonines with relatively long and slender legs, with a total length of 2.2-2.3, which are characterized by the following combination of somatic and genitalic characters:
1) Carapace slightly modified, eyes somewhat enlarged, cephalic pits (= sulci) absent (
Figs 5-6
).
2) Abdomen with a dorsal pattern (
Fig. 5
).
3) Legs relatively long and slender.
4) Chaetotaxy formula 2.2.1.1; each metatarsus with a trichobothrium; TmI 0.52-0.60.
5) Palpal tibia unmodified.
6) Paracymbium long and narrow (
Fig. 15
).
7) Median membrane strongly reduced.
8) Distal suprategular apophysis extremely developed, massive (
Figs 15, 18
).
Figs 1-9. Photographs of males: the holotype of
Javagone maribaya
sp. nov.
(1-4), the paratype of
Javanaria gracilipes
sp. nov.
(5-6) and the holotype (7) and both paratypes (8-9) of
Javanyphia gede
sp. nov.
(1, 5, 8-9) Habitus, dorsal view. (2, 6-7) Prosoma, lateral view. (3) Prosoma, frontal view. (4). Prosoma, dorsal view.
9) Radix strongly reduced, embolus relatively wide, flat, convector absent (
Figs 19-20
).
Species included:
Only the
type
species,
Javanaria gracilipes
sp. nov.
Taxonomic remarks:
In its large size and long legs
J. gracilipes
sp. nov.
resembles some taxa of the subfamilies
Linyphiinae
and
Micronetinae
, but its palpal conformation is of the classically erigonine-type. The palp of
J. gracilipes
sp. nov.
somewhat resembles that of
Nasoonaria
. However, this similarity is superficial, mainly due to the large distal suprategular apophysis. Today its is impossible to find a genus among the known erigonines to which
Javanaria
gen. nov.
appears to be close. Most likely the closest relatives will be found among taxa not yet described.
Distribution:
Known only from the
type
locality on
Java
,
Indonesia
.