Pseudoscorpions (Arachnida, Pseudoscorpiones) from French Polynesia with first species records and description of new species
Author
Krajcovicova, Katarina
https://orcid.org/0000-0003-1303-2434
Bratislavske regionalne ochranarske zdruzenie - BROZ, Na Riviere 7 / a, 841 04, Bratislava, Slovakia
Author
Ramage, Thibault
https://orcid.org/0000-0001-5939-7098
14 impasse Jeanne Dieulafoy, 29900, Concarneau, France
Author
Jacq, Frederic A.
https://orcid.org/0000-0002-9177-6212
BP 41 405 Faretony, 98713 Papeete, Tahiti, French Polynesia
Author
Christophoryova, Jana
https://orcid.org/0000-0002-3746-1367
Department of Zoology, Faculty of Natural Sciences, Comenius University, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
christophoryova@gmail.com
text
ZooKeys
2024
2024-02-19
1192
29
43
http://dx.doi.org/10.3897/zookeys.1192.111308
journal article
http://dx.doi.org/10.3897/zookeys.1192.111308
1313-2970-1192-29
1CBEA82C90714943A022529CCC06B947
056A5A7A970B5E1CBB2A5A03082E80AA
Paratemnoides assimilis (Beier, 1932)
Figs 2A
, 3
Materials examined
(Fig.
1
).
French Polynesia
•
2 ♂♂
,
5 ♀♀
, 1 tritonymph, 1 deutonymph;
Huahine
,
Motuhionoa
[
16°46'16"N
,
151°00'14"W
];
82 m
a.s.l.
;
06 Nov. 2020
;
F. Jacq
leg.; decaying
Falcataria moluccana
trunk; NHMW 29976
. •
1 ♀
;
Huahine
,
Motuhionoa
[
16°46'11"N
,
151°00'10"W
];
32 m
a.s.l.
;
06 Nov. 2020
;
F. Jacq
leg.;
Malaise trap
; NHMW 29977
.
Figure 1.
Map of archipelagos of
French Polynesia
with details of Tahiti and Huahine islands with marked studied localities.
Description.
♂ (♀) (Figs
2A
,
3
).
Figure 2.
A
Paratemnoides assimilis
, female
B
Paratemnoides pallidus
, male
C
Geogarypus longidigitatus
, male
D
Olpium caputi
sp. nov., female. Scale bars: 0.5 mm.
Figure 3.
Paratemnoides assimilis
A
carapace, dorsal view
B
chelicera with setae pattern, dorsal view
C
rallum
D
palpal chela, dorsal view, showing trichobothriotaxy, teeth and venom apparatus
E
coxal area, ventral view
F
genital area
G
pedipalp, dorsal view (trochanter, femur, and patella)
H
leg I, lateral view
I
leg IV, lateral view. Scale bars: 0.1 mm.
Carapace
(Fig.
3A
). Carapace 0.96 (0.95)
x
longer than broad, conically narrowed; epistome absent; with 2 distinct eye spots; smooth, without transverse furrows; anterior half brown distinct darker than posterior half; with 49 (44) acuminate setae apically with a dentition, 8 (9) setae on posterior margin; for lyrifissures see Fig.
3A
.
Chelicera
(Fig.
3B, C
). Chelicera 2.33 (2.47)
x
longer than broad; 4 setae on hand,
sbs
absent,
bs
and
es
denticulate; moveable finger with 1 short seta; 2 slit-like lyrifissures on hand; galea long with 5 rami (Fig.
3B
); serrula exterior with 22 blades; rallum consisting of 4 blades, distal one long and serrated (Fig.
3C
).
Pedipalps
(Fig.
3D, G
). Pedipalps smooth, only anterior face of femur with minute denticles (Fig.
3G
), trochanter and femur lighter than chela (Fig.
2A
). Trochanter 1.59
x
, femur 2.16 (2.19)
x
, patella 1.91 (1.94)
x
, chela 2.59 (2.63)
x
, hand with pedicel 1.67 (1.69)
x
longer than broad. Venom apparatus present only in fixed finger terminating in nodus ramosus slightly proximal to trichobothria
et
(Fig.
3D
). Fixed chelal finger with 8 trichobothria, moveable chelal finger with 4 trichobothria. Fixed chelal finger with 39 small marginal teeth; moveable chelal finger with 42 (43) small marginal teeth (Fig.
3D
). Trichobothia
eb
and
esb
adjacent and located basally;
est
midway between
esb
and
et
;
st
closer to
sb
than to
t.
For a complete trichobothrial pattern see Fig.
3D
.
Coxae
(Fig.
3E
). Coxae smooth, all setae acuminate or with fine dentition apically; manducatory processes with 6 (5) setae; palpal coxae with 13-14 (16-17) setae; pedal coxae I-IV chaetotaxy: 9-11 (8-10): 6-8 (9): 6-7 (7): 17-19 (15-17); for lyrifissures see Fig.
3E
.
Abdomen
(Fig.
2A
). Tergites I-III undivided, IV-V partly divided, VI-XI with fine division; sternites IV-XI divided. All setae acuminate or with fine dentition apically.
Tergal chaetotaxy
I-XI
: 8: 8: 8: 4-5: 6-7 (6-7): 6 (6-7): 6 (6-7): 6 (7): 7: 9: 5.
Sternal chaetotaxy
IV-XI
: 4: 5-7 (7): 6 (7-8): 7 (8): 8 (7-8): 9 (7): 7: 5.
Genital area
II-III
. Short acuminate setae [slit-like lyrifissures]: 15 [2] (8 [4]): 6 [4] (4 [2]).
Genital area
(Fig.
3F
). Male rod Y shaped, female with several cribriform plates externally (Fig.
3F
).
Leg
I
(Fig.
3H
). Trochanter 1.21
x
, femur I 1.25 (1.26)
x
, femur II 2.86 (2.63)
x
, tibia 2.77
x
, tarsus 3.22 (3.33)
x
deeper than broad.
Leg
IV
(Fig.
3I
). Trochanter 1.44
x
, femoropatella 3.15 (3.23)
x
, tibia 3.18 (3.29)
x
, tarsus 2.77 (2.69)
x
deeper than broad. Leg IV with 1 tactile seta basally on tarsus (Fig.
3I
). Claws simple, arolium slightly shorter than claws (Fig.
3H, I
).
Measurements
(in mm, length/width or, for legs, length/depth).
♂ (♀). Body length 2.98 (3.38). Pedipalps: trochanter 0.43/0.27, femur 0.69 (0.70)/0.32, patella 0.67 (0.68)/0.35, chela 1.27 (1.29)/0.49, hand with pedicel 0.82 (0.83)/0.49, hand without pedicel 0.72 (0.73), fixed finger 0.62 (0.63). Chelicera 0.35 (0.37)/0.15, moveable finger 0.28. Carapace 0.85 (0.88)/0.89 (0.93). Leg I: trochanter 0.17/0.14, femur I 0.25 (0.24)/0.20 (0.19), femur II 0.40 (0.42)/0.14 (0.16), tibia 0.36/0.13, tarsus 0.29 (0.30)/0.09. Leg IV: trochanter 0.23/0.16, femoropatella 0.82 (0.84)/0.26, tibia 0.54/0.17, tarsus 0.36 (0.35)/0.13.
Identification.
Paratemnoides assimilis
is most similar to
P. pallidus
(Balzan, 1892) as both possess similar proportions of the palpal segments (femur 0.62-0.83 mm long/2.10-2.30
x
longer than broad, patella 0.59-0.78 mm long/1.80-1.90
x
longer than broad, chela 1.27-1.44 mm long/2.40-2.70
x
longer than broad, finger 0.47-0.63 mm long), minute denticles on the palpal segments while other body segments are smooth, and a carapace without transverse furrows. They differ by the presence of minute denticles on different segments of the pedipalps; in
P. assimilis
denticles are present on the anterior margin of the palpal femur, but with other palpal segments smooth, but in
P. pallidus
denticles are present on femur as well as on patella (
Beier 1932a
,
1932b
;
Mahnert 1978a
;
Harvey 1988
). Measurements of the palpal hand with pedicel also differ (
P. assimilis
0.62-0.83 mm long vs
P. pallidus
0.80-1.06 mm long) (
Mahnert 1978a
;
Harvey 1988
).
Remarks.
New-found specimens of
P. assimilis
were compared with selected
Paratemnoides
species deposited in NHMW:
P. assimilis
[NHMW-Zoo-AR 25115, NHMW-Zoo-AR 25124];
P. ceylonicus
Beier, 1932 [NHMW-Zoo-AR 25064, NHMW-Zoo-AR 25065];
P. curtulus
(Redikorzev, 1938) [NHMW-Zoo-AR 25117];
P. laosanus
(Beier, 1951) [NHMW-Zoo-AR 25073];
P. pallidus
[NHMW-Zoo-AR 25090, NHMW-Zoo-AR 25125]; and
P. salomonis
(Beier, 1935) [NHMW-Zoo-AR 25110]. As mentioned by
Harvey (1988)
, the identification keys to
Paratemnoides
species by
Beier (1932a
,
1932b
) are based generally on the size or thickness of palpal segments and legs.
Harvey (1988)
applied the character of measurements of leg segments as distinguishing ones for
P. assimilis
and
P. ceylonicus
. Specimens of species mentioned above were examined and compared in this study. Leg segments were measured but the values completely overlapped in all examined species. Considering these results and the fact that the
Paratemnoides
species descriptions are generally not sufficient, a revision of this genus is necessary to clearly set species boundaries.
Currently,
P. ceylonicus
is one of the synonyms of
P. pallidus
(Fig.
2B
) (
Klausen 2005
;
WPC 2022
). The current synonymy of the two species was justified by no significant difference between
P. ceylonicus
and
P. pallidus
in palpal chela measurements (
Klausen 2005
).
Beier (1932a
,
1932b
,
1973
) supported the existence of
P. ceylonicus
by the presence of minute denticles on the anterior margin of the palpal femur while other palpal segments are smooth.
All examined specimens of
P. ceylonicus
deposited in NHMW possess distinct granulation present on palpal femur as well as on patella just like in
P. pallidus
. The present study supports the synonymization of
P. ceylonicus
with
P. pallidus
suggested by
Klausen (2005)
.
Family
Geogarypidae
Chamberlin, 1930
Genus
Geogarypus
Chamberlin, 1930