A survey of East Palaearctic Gnaphosidae (Araneae). 5. On Synaphosus from Central Asia
Author
Marusik, Yuri M.
Author
Fomichev, Alexander A.
text
Zootaxa
2016
4178
3
428
442
journal article
10.11646/zootaxa.4178.3.7
cc051f0e-8ad3-4da6-bfff-6034096af9d1
1175-5326
272510
5D757FFE-7367-47A4-9523-9A0CEA3B2763
Synaphosus
Platnick & Shadab, 1980
Synaphosus
Platnick & Shadab, 1980
: 21
;
Ovtsharenko
et al
. 1994
: 2
;
Deeleman-Reinhold 2001
: 535
;
Murphy 2007
: 378
.
Type species
:
Nodocion syntheticus
Chamberlin, 1924
.
Diagnosis
.
Synaphosus
species found in Central Asia can be distinguished from other gnaphosids known in the region by the combined presence of preening brush (but not comb) on metatarsi III, lack of median apophysis, long circular embolus originated retrolaterally or at least from six o'clock position (
S. ovtsharenkoi
sp. n.
), complex conductor with 2 arms, sharply pointed tibial apophysis, presence of epigynal pocket and long, highly twisted copulatory ducts.
Description
. Described by
Ovtsharenko
et al
. (1994)
.
Relationships
.
Synaphosus
was not assigned to any subfamily by
Platnick & Shadab (1980)
and
Ovtsharenko
et al.
(1994)
.
Ubick (2005, p. 107)
listed genus among "Drassodinae" a polyphyletic taxon, in which he placed genera with unclear position.
Murphy (2007)
placed
Synaphosus
into the formal
Echemus
group of genera.
Species groups
. Three species groups were recognized by
Ovtsharenko
et al
. (1994)
in the genus:
syntheticus
,
gracillimus
, and
kakamega
. Judging from the shape of copulatory organs in five species recently described from Southeast Asia, they belongs at least to two other species groups. One group that should be called
femininis
unites
S. cangshanus
Yang, Yang & Zhang, 2013
(♂♀) and
S. femininis
Deeleman-Reinhold, 2001
(♂♀). Both species have a very long tibial apophysis, and a characteristic epigyne with numerous coils of copulatory ducts small in diameter and placed on top of each other, and a wrinkled anterior part of epigynal plate. Three other species
S. daweiensis
Yin, Bao & Peng, 2002
(♂♀),
S. kris
Deeleman-Reinhold, 2001
(♂) and
S. raveni
Deeleman-Reinhold, 2001
(♂) have male palps very different from each other and from all other species by having either no tibial apophysis (
S. kris
) or 2 tibial apophyses (
S. raveni
), or complex tibial apophyses and modified cymbium (
S. daweiensis
). Three former species are possibly misplaced in this genus.
Note
. Bulbal sclerites in
Synaphosus
were not homologized in literature.
Platnick & Shadab (1980)
and
Ovtsharenko
et al
. (1994)
mentioned three sclerites: embolus, conductor (with groove) and folded median apophysis, but none of the sclerites were indicated on the figures. Judging from the structure of the bulb,
Synaphosus
lacks a median (=tegular) apophysis, homologous to that in other
Gnaphosidae
such as
Gnaphosa
Latreille, 1804
,
Haplodrassus
Chamberlin, 1922
,
Drassodes
Westring, 1851
, and
Micaria
Westring, 1851
. Median (tegular) apophysis in abovementioned genera is a hook-like, heavily sclerotized apophysis flexibly attached to the tegulum by a membranous insertion. Members of the
syntheticus
-group of
Synaphosus
have two apophyses. Judging from the SEM figures (
Figs 13‒15, 18
) of
S. ovtsharenkoi
sp. n.
, two apophyses originate from the same sclerite, and we consider them the arms of a subdivided conductor. The prolateral one (
Pc
) appears to serve as a "functional" conductor and has a groove guiding the embolus. The other one is the membranous retrolateral arm (
Rc
). Members of the
gracillimus
group have only one distinct apophysis, unless one counts the embolus. It is a greatly enlarged conductor that covers whole tegulum; its tip serves as functional conductor and seems homologous to the prolateral arm of the conductor (
Figs 43‒44, 46
).