A new genus with seven species of the Subfamily Nopinae (Araneae, Caponiidae) from the Neotropical region
Author
Sánchez-Ruiz, Alexander
Author
Brescovit, Antonio D.
text
Zootaxa
2017
4291
1
117
143
journal article
32690
10.11646/zootaxa.4291.1.7
0e2c20a3-3c34-4a6f-bbbe-3b8a30e27036
1175-5326
829407
07981903-5F66-454D-8CF1-6E1077DB5333
Medionops murici
new species
Figures 11–14
Types
.
Male
holotype
from
Estacão Ecológica
de
Murici
(
9°19'S
35°55'W
),
Murici
,
Alagoas
,
Brazil
,
13– 22.ix.2003
,
Equipe
BIOTA
, winkler, deposited in
IBSP
99011
.
Paratypes
:
1♂
,
1♀
, same data as holotype,
pitfall trap
, deposited in
IBSP
99015
and
IBSP
99014
respectively
.
Additional material examined.
BRAZIL
:
Paraíba
:
Areia
,
Reserva da
Mata de Pau Ferro
(
6°57'S
35°45'W
),
23–29.ix.1999
,
A.D. Brescovit
,
1♂
, 1imm. (
IBSP
99030
),
1♂
(
IBSP
99028
)
.
Pernambuco
:
Ipojuca
,
Mata
de Oiteiro
(
8°23'S
35°3'W
),
16.xi.2008
,
A. Costa
,
1♂
(
IBSP
133582
)
.
Alagoas
:
Murici
,
Estacão Ecológica
de
Murici
(
9°19'S
35°55'W
),
13–22.ix.2003
,
Equipe
BIOTA
,
pitfall trap
,
1♀
(
IBSP
99020
),
1♀
(genitalia, palp and legs for SEM) (
IBSP
99021
),
1♂
(
IBSP
99010
),
1♂
(
IBSP
99012
),
1♂
(
IBSP
99016
),
1♂
(
IBSP
99018
),
1♂
(
IBSP
99013
)
.
Maceió
,
Boa Vista
,
17.xii.2005
,
G. Quintela
,
pitfall trap
,
1♂
(palp and spinnerets for SEM) (
IBSP
85199
)
.
Etymology.
The specific name is a noun in apposition, derived from the
type
locality.
Diagnosis.
Males and females resemble those of
M. blades
n. sp.
and
M. cesari
(Dupérré)
n. comb.
in having the abdomen with light whitish gray dorsal chevron pattern, but can be distinguished by having the proximal chevron mark thick and bigger than the others, with a longitudinal whitish gray line reaching the pedicel (
Figs 14
A–B). Crista and gladius absents (
Figs 11
C–D; 13B–C). Males with shorter embolus, without blade–shaped projections (
Figs 14
D, E); females with straight genital opening (
Fig. 14
C).
Description.
Male
(
holotype
): Total length 4.8. Carapace 2.2 long, 2.0 wide. Sternum 2.0 long, 1.9 wide. Leg measurements: I: 2.5; II: 2.4; III: 2.2; IV: 2.9. Carapace dark orange. Chelicerae, palps and legs orange; coxae and trochanters lighter. Endites, labium and sternum light orange. Abdomen dark gray with a pattern formed by five chevron light grey marks, the proximal chevron mark thick and bigger than the others, with a longitudinal whitish gray line reaching the pedicel (
Fig. 14
A). Anal tubercle and spinnerets lighter than abdomen. Crista and gladius absent (
Figs 11
C–D). Palp with a spherical oval, large bulb, the widest width of bulb is more than half of the cymbium length (
Figs 14
D–E); embolus longer than cymbium (
Figs 14
D–E), tip of embolus slightly curved, acuminate, with beveled opening (
Figs 12
C–F).
FIGURE 11.
Medionops murici
n. sp.
, male (IBSP 85199).
A
tarsus on left leg I, retrolateral view.
B
tarsal claws on left leg I, retrolateral view.
C
join of tarsus and metatarsus on left leg I, ventral view.
D
detail of join of tarsus and metatarsus on left leg I, ventral view.
E
left leg II, retrolateral view.
F
join of tarsus and metatarsus on left leg II, ventral oblique view.
G
tarsal claws on left leg II, retrolateral view.
H
tarsal organ on left leg II, dorsal view.
I
tarsal organ on left leg IV, dorsal view.
J
tarsal claws on left leg IV, retrolateral view.
K
tarsal claws on left leg IV, dorsal view.
L
detail of tarsal claws on left leg IV, dorsal view.
FIGURE 12.
Medionops murici
n. sp.
, male (IBSP 85199).
A–F
left palp,
G–I
spinnerets.
A
prolateral view.
B
tibial brush, prolateral view.
C
tip of embolus, prolateral view.
D
tip of embolus, ventral view.
E
tip of embolus, retrolateral view.
F
tip of embolus, dorsal view.
G
posterior view.
H
left ALS, posterior view.
I
PMS, posterior view. Abbreviations: ALS—anterior lateral spinnerets, PMS—posterior median spinnerets.
Female
(
paratype
): Total length 5.0. Carapace 2.5 long, 2.3 wide. Sternum 2.0 long, 1.9 wide. Leg measurements: I: 2.6; II: 2.5; III: 2.3; IV: 3.0. Carapace, chelicerae, labium, legs, coxae, endites and sternum as in the male. Abdomen pattern as in the male (
Fig. 14
B). Anal tubercle and spinnerets lighter than abdomen. Crista and gladius absents (
Figs 13
B–C). External genitalia with a straight and narrow genital opening and wide sclerotization around spiracles (
Fig. 14
C). Internal genitalia with a slightly convex distal margin of receptaculum (dmr), without median concavity; uterus externus (ue) with wide proximal section; posterior plate strongly projected with a median invagination (
Figs 13
G–I); internal fold strongly sclerotized (
Fig. 13
J).
Distribution.
Known only from the Brazilian States of
Pernambuco
,
Alagoas
and
Paraíba
(
Fig. 21
).