On the taxonomy of southern South American species of the wolf spider genus Allocosa (Araneae: Lycosidae: Allocosinae)
Author
Simó, Miguel
Author
Lise, Arno A.
Author
Pompozzi, Gabriel
Author
Laborda, Álvaro
text
Zootaxa
2017
4216
3
261
278
journal article
37358
10.5281/zenodo.231813
6af02520-fb1a-48c3-ae7e-958d234efb06
1175-5326
231813
BF37421F-280D-4F3C-A51B-F18FAA87D49C
Allocosa alticeps
(
Mello-Leitão, 1944
)
Figs 4
,
5
E–F, 6E–F, 8C–D, 9
Glieschiella alticeps
Mello-Leitão, 1944
: 347
, figs 37–38 (Male
lectotype
and immature female
paralectotype
(designated herein) from
San Blas
,
Buenos Aires
,
Argentina
(
40°33´S
,
62°13´W
),
M. Birabén
leg.,
II.1941
,
MLP
16060, examined
; MLP 16061, not found).
Allocosa alticeps
:
Capocasale 2001
: 272
.
Remarks.
Mello-Leitão (1944)
described the male and the female. From the examination of the
types
(MLP 16060) we found a male with an immature female. In the original description the author mentioned another second
type
sample (MLP 16061), but it was not found in that collection.
Other
material examined.
Argentina.
Buenos Aires
.
Pehuen-co
,
Bosque Encantado
(
39°0'S
,
61°34'W
),
3.
II.2013
,
N. Ferretti
leg.,
1 female
(FCE Ar 6708)
; 1 female (FCE Ar 5974);
8.I.2014
, 1 female (FCE Ar 4835); 1 male (FCE Ar 4836); 1 male, 1 female (FCE Ar 4837);
1 male
(LZI 318); all collected by
G. Pompozzi
; same locality
, L. Schwerdt leg., 1 female (LZI 316); S. Copperi leg.,1 female (LZI 317); N. Ferretti leg., 1 male (LZI 319).
FIGURE 7.
A–E
Allocosa senex
(Mello-Leitão)
. A, carapace, frontal view; B, female leg IV, tarsal claw; C, female pedipalp, tarsal claw; D, spinnerets; E, female anterior lateral spinnerets. F,
Allocosa marindia
sp. nov
.
, posterior median spinnerets, piriform spigots. Abbreviations: ALS, anterior lateral spinnerets; MAP, major ampullate spigot.
FIGURE 8.
Living specimens. A,
Allocosa marindia
sp. nov.
; B,
Allocosa senex
(Mello-Leitão)
(A and B from Playa Pascual, San José, Uruguay); C–D,
Allocosa alticeps
(Mello-Leitão)
from Pehuen-có, Buenos Aires, Argentina; C, female carrying spiderlings. D, specimen at the burrow entrance.
Diagnosis.
A. alticeps
resembles
A. marindia
sp. nov.
in the similar body size, colouration and by the vulval chambers laterally projected, but differs by the terminal apophysis of the male bulb slightly folded at the tip (
Figs 4
A–D, 5E), and by the tip of the head of the spermathecae laterally projected (
Figs 4
F, 6F).
Description.
Male (
Lectotype
). The body is densely covered with setae. Carapace yellowish with cephalic area high. Eyes surrounded by black rings. Thoracic grooves narrow and dark brown. Chelicerae dark brown. Clypeus yellowish, with four median setae. Labium dark brown, truncated at the apex. Endites dark brown, convergent, with rounded apex. Sternum yellowish, with dark edges, acuminate posteriorly. Legs yellowish. Opisthosoma yellowish, with light brown spots. Spinnerets yellow, densely covered with dark setae, anterior laterals the longest. Total length 7.75. Carapace 4.85 long, 3.20 wide. Clypeus 0.25 high. Eye diameters and interdistances AME 0.22, ALE 0.15, PME 0.43, PLE 0.33, AME–AME 0.13, AME–ALE 0.03, PME–PME 0.40, PME–PLE 0.50, PLE–PLE 0.83. Chelicerae 2.70 long, with three promarginal teeth, the median the largest, and three retromarginal teeth, increasing in length from basal to apical. Opisthosoma 3.50 long, 2.25 wide. Leg formula IV/I/III/II; segment length: I femur 3.20/patella 1.50/tibia 2.35/ metatarsus 2.25/ tarsus 1.45/total 10.75. II 3.0/1.50/1.90/2.0/1.35/9.75. III 3.0/1.63/2.0/2.58/1.50/10.70. IV 3.75/2.0/3.0/3.40/1.75/13.90. Leg spination: I, femur p1ap, d1-1-1, r1-1; patella p1, r1; tibia p1-1, r1,
v2-2
-2; metatarsus p1-1-1, r1-1,
v2-2
-
3. II
, femur p1, d1-1-1, r1-1; patella p1, r1; tibia p1-1, d1, r1-1,
v1-1
-2; metatarsus p1-1-1, r1-1-1,
v2-2
-
1. III
, femur p1-1, d1-1-1, r1ap; patella p1, r1; tibia p1-1, d1, r1-1,
v2-2
-2; metatarsus
v2-2
-
3. IV
, femur p1-1, d1-1-1, r1ap; patella p1, r1; tibia p1-1, d 1, r1-1,
v2-2
-2; metatarsus p1-1-1, r1-1-1,
v3-2
-3. Palpus: cymbium longer than tibia, with two apical macrosetae. Terminal apophysis folded, median apophysis bifurcated (
Figs 4
A–D, 5E–F).
Female (FCE Ar 4835). As in male except for the following: endites yellowish. Total length 9.60. Carapace 4.80 long, 3.01 wide. Clypeus 0.20 high. Eye diameters and interdistances AME 0.2, ALE 0.15, PME 0.40, PLE 0.30, AME–AME 0.10, AME–ALE 0.05, PME–PME 0.4, PME–PLE 0.50, PLE–PLE 0.75. Chelicerae 2.50 long, with three promarginal teeth, the median the largest, and three retromarginal teeth, increasing in length from basal to apical. Opisthosoma 4.20 long, 3.3 wide. Leg formula IV/I/II/III; segment length: I femur 3.30/patella 1.60/tibia 2.30/ metatarsus 2.10/ tarsus 1.50/total 10.80. II 3.0/1.50/2.10/2.0/1.40/10.0. III 2.90/1.40/2.0/2.20/1.50/10.0. IV 3.06/1.60/3.10/3.30/1.80/12.86. Leg spination: I, femur p1ap, d1-1-1, r1ap; patella p1; tibia p1-1, r0-1,
v2-2
-2; metatarsus p1-1-2, r1-1-2,
v2-2
-
1. II
, femur p1ap, d1-1-1, r1-1; patella p1; tibia p1-1,
v1-1
-2; metatarsus p1-1-2, r1-2,
v2-2
-
1. III
, femur p1-1, d1-1-1, r1-1; patella p1, r1; tibia p1-1, d1, r1-1,
v2-1
-2; metatarsus p1-1-2, r1-1-2,
v2- 2
-
1. IV
, femur p1-1, d1-1-1, r1; patella p1, r1ap; tibia p1-1, d1, r1-1,
v2-2
-2; metatarsus p1-1-2, r1-1-2,
v3-2
-1. Palpus with conspicuous prolateral macrosetae in patella, tibia and metatarsus. Tarsal claw pectinated and well developed. Epigynum rather flat, with lateral copulatory openings (
Figs 4
E, 6E).
Variation.
Measurements, male (n=5): carapace length 4.1–4.9; carapace width 3.0–3.6; femur I length 3.0– 3.6. Female (n=5): carapace length 3.8–4.8; carapace width 3.0–3.5; femur I length 2.6–3.3.
Natural history.
Allocosa alticeps
lives in sand coastal dunes associated with psammophile vegetation, where specimens construct burrows (
Fig 8
C–D). The species was also registered in sandy areas with exotic vegetation of
Tamarix gallica
L. (
Tamaricaceae
),
Eucalyptus
sp. and
Pinus
sp. (
Celsi &
Montserrat
2008
).
Distribution.
Southern
Buenos Aires Province
,
Argentina
(
Fig. 9
).