Distinctive Collembola Communities in the Mesovoid Shallow Substratum: Entomobryomorpha of the Sierra de Guadarrama National Park (Central Spain)
Author
Baquero, Enrique
University of Navarra, Faculty of Sciences, Department of Environmental Biology, University Campus, 31080, Pamplona (Spain)
ebaquero@unav.es
Author
Jordana, Rafael
University of Navarra, Faculty of Sciences, Department of Environmental Biology, University Campus, 31080, Pamplona (Spain)
rjordana@unav.es
Author
Ortuño, Vicente M.
Grupo de Investigación de Biología del Suelo y de los Ecosistemas Subterráneos, Departamento de Ciencias de la Vida, Facultad de Ciencias, Universidad de Alcalá, E- 28871, Alcalá de Henares, Madrid (Spain) vicente. ortuno @ uah. es
vicente.ortuno@uah.es
text
Zoosystema
2021
2021-01-26
43
3
37
78
journal article
8557
10.5252/zoosystema2021v43a3
cd89b152-32bd-42cc-be33-a74a856fb5e4
1638-9387
4487162
urn:lsid:zoobank.org:pub:EA621D7C-F9AE-460B-8EBF-9E932862D4FE
Lepidocyrtus labyrinthi
Baquero & Jordana
n. sp.
(
Figs 8C, D
;
11
;
12
;
13
;
Table 5
)
urn:lsid:zoobank.org:act:
2D7EB763-FBF6-4CE1-89E1-350695051356
TYPE MATERIAL. —
Holotype
.
Spain
•
♀
;
Segovia
,
Sierra de Guadarrama
,
Montes Carpetanos
,
Majada Aranjuez
(Northwest); 30T 4190 45231;
2071 m
a.s.l.
;
17.XI.2015
; Ortuño
et al.
leg.;
pitfall SSD
(since
2.VI.2015
);
MZNA
SSD-8
(slide 04).
Paratypes
.
Spain
•
5 specimens
on slide and
70 in
ethyl alcohol;
SSD-6
, slides 05 and 11; Ortuño
et al.
leg.;
MZNA
•
6 specimens
;
SSD-7
, slide 09; same data;
MZNA
•
11 specimens
on slide and
20 in
ethyl alcohol;
SSD-9
, slide 06; same data;
MZNA
•
1 specimen;
SSD-29
, slide 08; same data;
MZNA
•
10 specimens
in ethyl alcohol;
SSD-6
; same data;
MNHN
.
FIG. 12. —
Lepidocyrtus labyrinthi
Baquero & Jordana
n. sp.
,Th II to AbdIII dorsal chaetotaxy.Abbreviations:see Material and methods.Symbols:●, ciliated Mc; ○, mes; ⦰, pseudopores; ▣, bothriotricha. Scale bar: 0.05 mm.
TYPE LOCALITY. —
Spain
, Segovia, Sierra de Guadarrama, Montes Carpetanos, Majada Aranjuez (Northwest); 30 T 4190 45231;
2071 m
a.s.l.
ETYMOLOGY. — The specific epithet “
labyrinthus
” (of the labyrinth), refers to the presence of this species in the underground crack network of the mesovoid shallow substratum.
ADDITIONAL MATERIAL. —
Sierra de Guadarrama
, Segovia;
Ortuño
et al.
leg.;
MZNA
•
13 specimens
;
SSD-1
(
0.5 m
depth
), slides 06, 07; same data;
MZNA
•
9 specimens
;
SSD-1
(
1 m
depth
), slides 06, 09 and 10; same data;
MZNA
•
6 specimens
;
SSD-2
(
0.5 m
depth
), slides 08, 09; same data;
MZNA
•
2 specimens
on slide and
23 in
ethyl alcohol;
SSD-2
(
1 m
depth
), slide 16; same data;
MZNA
•
3 specimens
;
SSD-3
(
1 m
depth
), slide 01; same data;
MZNA
•
1 specimen
;
SSD-16
, slide 12; same data;
MZNA
•
1 specimen
;
SSD-22
, slide 06;
Madrid
; same data;
MZNA
•
1 specimen
;
SSD-12
, slide 11; same data;
MZNA
•
3 specimens
;
SSD-13
, slide 05; same data;
MZNA
•
1 specimen
;
SSD-15
, slide 07; same data;
MZNA
•
12 specimens
on slide and
30 in
ethyl alcohol;
SSD-23
, slide 04; same data;
MZNA
•
1 specimen
;
SSD-24
, slide 02; same data;
MZNA
•
1 specimen
;
SSD-28
, slide 04; same data;
MZNA
•
3 specimens
on slide and
26 in
ethyl alcohol;
SSD-30
, slide 04; same data;
MZNA
.
DIAGNOSIS. — Body violet more or less pigmented, ocular spot black, and antennae and body violetblue, with darker pigment dorsally, especially on tergites Th II-Abd III and distal part of the head; antennae with distal area pigmented and Ant IV totally pigmented; some specimens with posterior Th III and Abd I paler (
Fig. 8C, D
). Head Mc Pa
5
present; A
0
, A
2
and A
3
as Mc, and A
2a
as mes; posterior labial row with M
1
, M
2
, R*, E, L
1
and L
2
ciliated Mc (R half to two thirds of M; sometimes M
1
absent and usually asymmetric); Th II a little projected overhead, i.e., not pointed completely downward; Th II-III without Mc; Abd II with chaeta a
2p
present, a
3
forward from ‘as’ sensilla and only m
3
as ciliated Mc; AbdIV with four median ciliated Mc (C
1
, B
4-6
), three non-fan-shaped ciliated mic behind anterior bothriotrichum and bothriothrichal complex mic D
1p
present; claw with four internal teeth: two basal and two unpaired; empodium acuminate; manubrial plate with three internal and 5-8 external chaetae.
DESCRIPTION
Size and color
Body length up to 2.00 mm, including head (mean
1.64 mm
, n =
17 adults
), excluding antennae (
holotype
:
1.80 mm
). Color variable, from pale to dark violet almost whole body except last two abdominal segments and furcula; all specimens maintain transversal bands on Th II-Abd III; blue pigment on vertex of head and ocular patches Ant IV and tip of Ant II-III pigmented. Scales present on Ant I-II, ventral and dorsal head, thorax and abdomen dorsally, coxae I-III and femora-tibiotarsus I-III, dorsally and ventrally on manubrium and only dorsally on dens; manubrium and dens similar in length (
0.37 mm
, n = 15); non-annulated part of dens three times the length of mucro.
Head
Antennal head ratio 1.58 (n =6). Ant IV without apical bulb, apical organite and accessory sensilla as in
Figure 11B
. Ant III sense organ with two curved and expanded sensilla, one of them bigger than the other (
Fig. 11C
) three spiny guard sensilla, one of them blunt; on Ant II one distal similar but straight to Ant III expanded sensilla; Head Mc
Pa5
present, A
0
, A
2
and A
3
as ciliated Mc, A
2a
as mes; t, s and p chaetae present on ocular well (p as mes, bigger than the other), three scales in the area; head dorsal chaetotaxy (
Fig. 11A
) with 5-8 antennal (An) ciliated Mc basomedian labial fields chaetae smooth. Four prelabral ciliated chaetae; labrum with three rows, ‘a’ row with four apically ciliated chaetae, ‘m’ and ‘p’ with five smooth chaetae (
Fig. 11D
). Four labral papillae, conical or with a spinelike chaeta. Maxillary palp bifurcated with three smooth appendages (
Fig. 11E
). Labial papilla (l.p.) E with finger-shaped process not reaching at base of apical appendage (
Fig. 11F
). Labial row with M
1
, M
2
, R*, E, L
1
and L
2
ciliated Mc (R half to two-thirds of M; M
1
sometimes absent and usually asymmetric) (
Fig. 11G
). Postlabial chaetotaxy with 3+1 ciliated central Mc along the groove. 12+ 12 spinelike chaetae on posterior dorsal head.
FIG. 13. —
Lepidocyrtus labyrinthi
Baquero & Jordana
n. sp.
, Abd IV dorsal macrochaetotaxy, and detail of the shape of the accessory chaetae to bothriotricha. Abbreviations: see Material and methods. Symbols: ●, Mc; ○, mes; ⦰, pseudopores; ▣, bothriotricha; ▲, special chaetae. Scale bar: 0.05 mm.
Thorax chaetotaxy (
Fig. 12
)
Th II and Th III without Mc; Th II with ‘s’ and ‘ms’ in posterolateral position at level of m row; ThIII with two ‘a’ mic before psp, a
2
, a
3
, a
5
, a
6
, m
2
(above psp), m
3
, m
4
, p
2
-p
6
, and on lateral tergite a mes with the lateral sensilla (sl) interiorly.
Abdomen chaetotaxy (
Figs 12
;
13
)
Abd I with a
1
before psp; m
1
beside psp; a
3
, a
6
, m
3
, m
4
, m
6
and p
5
(with the ‘ms’ near a
3
). Abd II, mi and ml chaetae present over bothriotrichum (m
2
); a
2p
(p) present as smooth mic; a
2
(a) as smooth mic; m
3
(B) present as ciliated Mc; ‘as’ over m
3
and a
3
upside over a
2
(two times its length); m
3e
and p
4
(q
1
and q
2
) present as smooth mic; lm and ll present as pointed ciliated mic over bothriotrichum (a
5
); a
6
, m
4
, m
6
and p
5
as smooth mic; m
5
as Mc. Abd III, mi, ml and a
2
as pointed ciliated mic over bothriotrichum (m
2
); ‘as’ between a
2
and m
3
; m
3
as smooth mic; a
3
very up; p
3
below m
3
, and m
4
as smooth mic; lm, li, ll and a
6
as ciliated pointed mic surrounding bothriotrichum (a
5
); im, em and am
6
as small ciliated mic over m
5
bothriotrichum; pm
6
and p
6
as ciliated Mc with d
3
between them; ‘ms’ near p
5
as smooth mic; p
8p
as ciliated mes; a
7
, a
8
, m
7
, m
8
, p
7
and p
8
as smooth mic. AbdIV with four median mac (C
1
, B
4-6
; ratio between C
1
- B
4
/B
4
-B
6
0.60-0.74, n = 3), and 6 lateral Mc (E
2-4
, F
1-3
); T
5
as mic, D
3
, T
6
and T
7
as mes (D
3
as Mc in some specimens); before T
2
bothriotrichum, usually, three pointed ciliated mic (a, m and D
1
), with a supplementary ‘s’ chaeta present in only one specimen (
♂
) and asymmetric (
Fig. 13
).
Legs
Scales on legs (including all coxae). Trochanteral organ Vshaped with about 14-19 spine-like chaetae (n=3). Claw with four teeth on inner edge: basal pair at 50%, an unpaired median at 65%, and one minute unpaired subapical; two lateral teeth intermediate to base and paired, and one more basal dorsal tooth. Empodium acuminate, all with pe lamella serrated, other lamellae smooth (ae, ai, pi); claw:empodium ratio =1:0.8. Tibiotarsus III distally with one inner smooth chaeta similar in size to empodium; tenent hairs spatulated, smooth, similar in size to claw (
Fig. 11H
).
Furcula
Manubrium with scales dorsally and ventrally. Dens with scales only dorsally; manubrium and dens similar in length; manubrial plate (dorsally) with three internal ciliate Mc, between 5 and 8 (n =3) external chaetae, and 2 psp. Non-ringed area of dens three times the length of mucro (
0,002 mm
) (
Fig. 11I
).
Macrochaetotaxy
Reduced formula (from
Gisin 1965
,
1967a
, b): R
0
R
1
R
2001
/00/0101+3/0, paBq
1
q
2
, M1M2R*EL1L2 (* ½ to 2/3 of M).
ECOLOGY
Species widely distributed in the three mountain ranges, found in the MSS of more than half of the sampling points (
Fig. 1
A-C). Although it is present in the three bioclimatic zones, given the average catch and its frequent occurrence, it is more common with increasing altitude. Nevertheless, its greatest activity was recorded in SSD-6 of Canchal La Pedriza (
Fig. 3G, H
), located in the oro Mediterranean forest zone, and accounts for 32% of the 234
Entomobryomorpha
(not including
Orchesella
) collected there (
Fig. 1E
). At this site,
L. labyrinthi
Baquero & Jordana
n. sp.
is syntopic with seven other species (
Figs 1F
;
3H
) of the group analyzed in this study.
REMARKS
Winkler (2016)
and
Mateos (2011)
defined the
L. lignorum
group as the species with the formula R
0
R
1
R
2001
/00/0101+3 (with or without cephalic Mc S
0
, also called Pa
5
) and scales on antennae and legs, which currently includes the species:
L. barbulus
Mateos 2011
,
L. instratus
Handschin, 1924
,
L. juliae
Mateos, 2011
,
L. lignorum
(Fabricius, 1775)
,
L. peisonis
Traser & Christian, 1992
,
L. ruber
Schött, 1902
,
L tellecheae
Arbea & Jordana, 1990
,
L. traseri
Winkler, 2016
,
L. uzeli
Rusek, 1985
,
L. violaceus
([
Geoffroy, 1762
] Fourcroy, 1785). According to this definition, this new species belongs to this group. The species that share the traditional dorsal body macrochaetotaxy formula of
Gisin (1965
,
1967a
, b) with this species include
L. barbulus
,
L. instratus
,
L. juliae
,
L. lignorum
,
L. peisonis
,
L. traseri
,
L. tellecheae
,
L. uzeli
and
L. violaceus
.
Lepidocyrtus barbulus
is differentiated by the labial formula; it also has a pale color.
Lepidocyrtus tellecheae
has scales in the antennal segments I-III, claw with three teeth and row ‘a’ of the labral series with pointed chaetae.
Lepidocyrtus juliae
,
L. lignorum
and
L. violaceus
have labial papillae multispinate;
L. juliae
also has a characteristic coloration, with only four spots and
L. lignorum
has no pigment.
Lepidocyrtus peisonis
has smooth labial papillae and row ‘a’ of labral chaetae pointed.
Lepidocyrtus instratus
has three teeth on the claw and outer lamella of the empodium smooth.
Lepidocyrtus traseri
also has the outer lamella of the empodium smooth, in addition labral chaetae of row ‘a’ are bifurcated.
Lepidocyrtus uzeli
has the claw with only two teeth.
Lepidocyrtus juliae
,
L. lignorum
,
L. traseri
and
L. violaceus
have the row ‘a’ of labral chaetae bifurcated (
Table 5
).
The wide distribution of
L. labyrinthi
Baquero & Jordana
n. sp.
does not correspond to the activity records, since it represents only 1% of the
Entomobryomorpha
and
Entomobryidae
, studied in this work, (
Figs 1D
;
2A, B
).