Taxonomic review of the genus Erythrocricus Schubart, 1962 (Diplopoda, Spirobolida, Rhinocricidae)
Author
Rodrigues, Patrícia Elesbão Silva
7D9151AF-4A51-4D87-9057-991DC2E966D3
0000-0003-4448-3940
Laboratório de Diversidade e Sistemática de Arachnida - LaDiSA, Programa de Pós-Graduação em Biologia, Universidade do Vale do Rio dos Sinos. Avenida Unisinos 950, 93022 - 000 São Leopoldo, RS, Brazil.
patiesilva@yahoo.com.br
Author
Rodrigues, Everton Nei Lopes
9288C215-D60B-431E-86EA-541066F82169
0000-0002-9814-0954
Laboratório de Diversidade e Sistemática de Arachnida - LaDiSA, Programa de Pós-Graduação em Biologia, Universidade do Vale do Rio dos Sinos. Avenida Unisinos 950, 93022 - 000 São Leopoldo, RS, Brazil.
enlrodrigues@unisinos.br
text
European Journal of Taxonomy
2021
2021-05-11
748
177
187
http://dx.doi.org/10.5852/ejt.2021.748.1353
journal article
10.5852/ejt.2021.748.1353
150a4a05-d154-47f3-b03d-b7b358ab5320
2118-9773
4770266
02CCCA41-C04A-4623-BA18-34D11AFFFE56
Erythrocricus sanguineostriatus
(
Schubart, 1962
)
Figs 1–3
Rhinocricus
(
Erythrocricus
)
sanguineostriatus
Schubart, 1962: 70
, figs 1, 2, 4.
Rhinocrinus
(
Erythocricus
)
sanguineostriatus
—
Marek
et al
. 2003: 72
.
Erythrocricus miniatostriatus
Schubart, 1962: 71
, figs 3, 5.
Syn. nov.
Justification of synonymy
Schubart (1962)
described two species,
Erythrocricus sanguineostriatus
and
E. miniatostriatus
, both similar in body pattern and gonopods structure. Despite the similarities, both species present variations in
Fig. 1.
Erythrocricus sanguineostriatus
(
Schubart, 1962
)
, ♂ (MCN 406).
A
. Head.
B
. Anterior body rings, lateral view.
C
. Anterior body rings, ventral view.
D
. Posterior body rings, dorsal view.
E
. Midbody rings, lateral view.
F
. Posterior body rings and telson, lateral view. Scale bars = 1 mm.
the red coloration on body rings wich in
E. sanguineostriatus
is present dorsally and in
E
.
miniatostriatus
dorsally and ventrolaterally. Our examination of the
type
species revealed that there is no significant difference either in external morphology or the structure of the gonopods between the species. Still, during examination of fresh specimens, we observed that the differences in the red coloration, seems to reflect only intraspecific variation.
Diagnosis
Erythrocricus sanguineostriatus
(
Schubart, 1962
)
resembles
E. electrofasciatus
(
Schubart, 1957
)
comb. nov.
by the shape of the anterior gonopod (
Figs 2A
,
5A
) with a triangular sternite having the medial portion distally rounded and the anterior gonopod wider than long but differs by the telopodite of the anterior gonopod with a reduced lobe in posterior view (
Fig. 2B
), and the red coloration presented as a transverse red line on all metazonites, collum and telson (
Fig. 1B, D–F
) and a rounded process of the coxae of leg pair 3 of the male (
Fig. 1C
).
Fig. 2.
Erythrocricus sanguineostriatus
(
Schubart, 1962
)
, ♂ (MCN 406).
A
. Anterior gonopod, anterior view.
B
. Anterior gonopod, posterior view.
C
. Left posterior gonopod, anterior view. Scale bars = 1 mm.
Material examined
Holotype
BRAZIL
•
1 ♂
;
São Paulo
,
Presidente Epitácio
;
52º06′56″ W
,
21º45′48″ S
;
22 January 1950
,
O. Schubart
leg.;
MZSP 2039
.
Paratypes
BRAZIL
•
1 ♂
,
1 ♀
;
Goiás
,
Santa Helena de Goiás
;
50°35′18″ W
,
17°49′23″ S
;
Nov.1960
,
G.A. Oliveira
leg.;
MZSP 2114
.
Other material
BRAZIL
•
1 ♂
;
Goiás
,
Jataí
;
51º42′52″ W
,
17º52′53″ S
;
Jan. 1955
;
M. Carreira
leg.;
MZSP2038
•
1 ♀
;
Aragarças
;
52º15′03″ W
,
15º53′51″ S
;
18 Jun. 1952
;
H. Sick
leg.;
MZSP1153
•
2 ♂♂
,
1 ♀
;
Minaçu
,
Usina Hidrelétrica Serra da Mesa
;
48º13′12″ W
,
13º31′59″ S
;
1–10 Oct. 1990
;
A.B. Bonaldo
and
L.A. Moura
leg.;
MCN406
.
Fig. 3.
Erythrocricus sanguineostriatus
(
Schubart, 1962
)
, ♀ (MCN 406).
A
. Head and anterior body rings, lateral view.
B
. Head and anterior body rings, ventral view.
C
. Posterior body rings, dorsal view.
D
. Posterior body rings and telson, lateral view. Scale bars = 1 mm.
Redescription
Male
(MCN 406)
MEASUREMENTS. With 52p+1a+T. Total length 55.0 mm, maximum width of midbody body rings
5.1 mm
.
COLORATION (in 70% alcohol) (
Fig. 1
). Antennae and legs dark brown. Collum red with yellowish margins. Prozonites grey; metazonites in dorsal portion with transverse red line on all body rings, posterior margins whitish. Telson red.
HEAD AND BODY RINGS (
Fig. 1
). Antennae with numerous apical sensory cones. Collum rounded laterally. Tegument smooth, without setae. Ozopores starting from 6
th
ring. Scobinae starting from 7
th
ring, semicircular and small.
LEGS (
Fig. 1C
). Coxae of leg pairs 3–5 of male expanded into a process. Coxae of leg pair 3 rounded.
TELSON (Fig. F). Epiproct short, not extended over paraprocts. Hypoproct subtriangular.
GONOPODS (
Fig. 2
). Anterior gonopod wider than long, sternite triangular, medial portion with rounded apex. Sternite as long as coxite and shorter than telopodite (
Fig. 2A
). Coxite rounded, in posterior view with margins projected medially. Telopodite thickened with reduced distal lobe (
Fig. 2B
). Posterior gonopod distally bifid. External branch laminated and folded over solenomere. Solenomere long and thin (
Fig. 2C
).
Female
(MCN 406)
Coloration (
Fig. 3
) as in male, with 52p+T. Total length 56.0 mm. Width
5.2 mm
.
Distribution
Known from Presidente Epitácio, state of São Paulo, and
Santa Helena
de Goiás, Minaçu, Aragarças, state of Goiás.