A new species of Speonemadus from Portugal, with the revision of the escalerai-group (Coleoptera, Leiodidae)
Author
Reboleira, Ana Sofa P. S.
Author
Fresneda, Javier
Author
Salgado, José Maria
text
European Journal of Taxonomy
2017
2017-01-19
261
1
23
journal article
32199
10.5852/ejt.2017.261
708e152e-4450-4439-84a9-3c56148cd082
885318
C59239D1-0BF0-446A-AF6E-71234D01B23D
Speonemadus breuili
(
Jeannel, 1922
)
Anemadus
(
Speonemadus
)
breuili
Jeannel, 1922: 60
.
Anemadus
(
Speonemadus
)
verneri
–
Jeannel 1922: 61
.
Anemadus
(
Speonemadus
)
angusticollis breuili
–
Jeannel 1936: 221
.
Anemadus
(
Speonemadus
)
angusticollis verneri
–
Jeannel 1936: 221
.
Type locality
“Cueva de las Motillas, Jerez de la Frontera, provincia de Cádiz” (
Jeannel 1922
).
Material examined
SPAIN
:
Cádiz
: 3 ♁♁,
2 ♀♀
,
Villaluenga
del Rosario, Cueva Aljíbez (=
Cueva
del
Aljíbe
,
Jul. 1970
,
Ribera
&
Viñas
leg. (
CMCN
)
. — Málaga: many ♁♁ and ♀♀, Cortés de la Frontera, Cueva del Berrueco,
12 Sep. 2009
and
6 Jun. 2010
, GIEX leg. (CFL, CPB, CJMS, CZULE); 15 ♁♁, 9 ♀♀ Cortés de la Frontera, Peñón del Berrueco, Cueva del Humo,
22 Dec. 2012
, GIEX leg. (CFL, CJMS); many ♁♁ and ♀♀, Cortés de la Frontera, Complejo Motillas, Cueva Motilla fósil,
13 Sep. 2009
and
8 Nov. 2009
, GIEX leg. (CFL; CPB; CJMS); many ♁♁ and ♀♀, Cortés de la Frontera, Complejo Motillas, Cueva Motilla Parralejo,
13 Sep. 2009
,
8 Nov. 2009
and
5 Jun. 2010
, GIEX leg. (CFL, CPB, CJMS, CZULE); 1 ♁, 2 ♀♀, Montejaque, El Pozuelo, Cueva Sima Nueva,
29 Mar. 1986
, Escolà leg. (CMCN).
Previous records
SPAIN
: Cádiz, Algeciras (
Giachino & Vailati 1993
); Algeciras, Los Barrios (
Blas 1989
;
Giachino & Vailati 1993
); Villaluenga del Rosario (
Giachino & Vailati 1993
); Villaluenga del Rosario, Cueva Aljíbez (= Cueva del Aljibe) (
Blas 1976
,
1977
,
1979
;
Tinaut 1998
;
Pérez 2015
); Vilalluenga del Rosario, Sima Aljibe nº 2, (
Ribera 1970
). — Málaga, Cortés de la Frontera, Cueva del Berrueco (
Jeannel 1922
,
1936
;
Ribera 1970
;
Blas 1976
,
1979
;
Giachino & Vailati 1993
;
Tinaut 1998
); Cortés de la Frontera, Cueva de las Motillas (
Ribera 1970
;
Blas 1977
,
1979
,
1989
;
Giachino & Vailati 1993
;
Tinaut 1998
;
Fresneda
et al.
2007
); Montejaque, El Pozuelo, Cueva Sima Nueva (
Blas 1989
); Montejaque, El Pozuelo, Cueva del Requejo (
Blas 1979
,
1989
;
Tinaut 1998
;
Pérez 2015
); Montejaque, El Pozuelo, Cueva Sivieja (
Blas 1989
;
Tinaut 1998
;
Pérez 2015
).
Redescription
BODY. Length 4.0–4.5 (males) and
3.9–4.7 mm
(females), body width 1.4–1.5 (males) and
1.5–1.7 mm
(females) (
Fig. 4
). Body color, pubescence and punctuation similar to that observed in
S. angusticollis
.
ANTENNAE. Reaching the basal 4th part of elytra; the antennomeres 1
st and
2nd are almost equal in length, also equal in length are the 4th, 5th and 7th ones being the 3rd ones clearly longer than the 2nd one and the 8th nearly twice as long as wide (
Table 1
).
PRONOTUM. Slightly transverse, maximum width at middle third part; the angles converge, smoothly from the middle area to the base in a straight line; posterior angles obtuse and rounded at vertex; sculpture and granularity well defned (
Fig. 12
).
ELYTRA. Elliptical and elongated, maximum length/width ratio = 1.92–2.10 (males) and
1.86–2.04 mm
(females), with overall shape of the species group and sculpture of “C”
type
(
sensu
Giachino & Vailati 1993
).
Male
(
Fig. 24
)
Features of the genital segment and aedeagus are similar to those described for
S. angusticollis
.
Female
The antennae are similar to those of the male, but the antennomeres are more transverse; 2nd, 4th, 5th and 7th antennomeres having similar length (
Table 1
). Pronotum less elongated; the overall shape and the ratio of width/ length ratio similar to that described for males (
Fig. 13
). Elytra elliptical and elongated with apical parts notched and serrated. 7th and 8th uroventrites, and genitalia typical of the species group.
Remarks
Speonemadus breuili
is re-established as a valid species due to the clear morphological characters that differentiate it from
S. angusticollis
, which was synonymized by
Blas (1989)
. This classifcation was subsequently followed by several authors (
Giachino & Vailati 1993
;
Perreau 2000
;
Salgado
et al.
2008
). The main character used to re-evaluate its specifc status is the shape of the male protibial keel, which is shorter and with a more rounded ridge, but also because in
S. breuili
the 8th antennomere is less transverse, the elytra are proportionally shorter, and the female pronotum is more hexagonal and clearly transverse. In addition,
Speonemadus verneri
is established as a synonym of
S. breuili
and not of
S. angusticollis
(
Blas 1989
)
, due to the absence of relevant differences compared to
S. breuili
.
Apart from the morphological differences pointed out, there is an obvious geographical isolation.
Speonemadus breuili
colonizes the southernmost caves in Spanish
Andalusia
, the provinces of Cadiz and Málaga, away from the distribution area of
S. angusticollis
.
Biology and Ecology
Speonemadus breuili
is commonly found in the subterranean ecosystem, as are the other species of the group. Inside the caves, it is found mainly in parts rich in organic matter and with a high humidity.
Distribution
Speonemadus breuili
is the southernmost species of the
escalerai
-group in the Iberian Peninsula, found in the provinces of Cadiz and Málaga. The limit of its northern distribution is established by the mountain ridge of Ronda. It is distributed in the Sierra de Grazalema and related foothills, while the distribution of
S. bolivari
is linked to the Sierra de
Nieves
and its foothills. Both mountain ranges are separated geographically by a wide valley of sedimentary material (
Fig. 32
).