Two new species of Rhaucus Simon, 1879 reveal putative synapomorphies related to the microstructural morphology of male genitalia (Opiliones: Cosmetidae)
Author
Pinzón-M, Conchita
Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, Caixa Postal: 11.461, 05422 - 970, São Paulo, SP, Brazil
Author
Pinto-Da-Rocha, Ricardo
Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, Caixa Postal: 11.461, 05422 - 970, São Paulo, SP, Brazil
text
Zootaxa
2024
2024-12-17
5555
1
35
56
https://doi.org/10.11646/zootaxa.5555.1.3
journal article
10.11646/zootaxa.5555.1.3
1175-5326
14508494
A27CB74D-EB39-4475-A059-D649C2DBEFB6
Rhaucus marmoratus
(Roewer, 1912)
New Combination
(
Figs 8
,
12
)
Pararhaucus marmoratus
Roewer, 1912c: 142
, pl. 7,
Figs. 2–3
; Flórez & Sánchez, 1995: 368.
Meterginus marmoratus
: Roewer, 1912b: 106; 1923: 383, Fig. 467; Mello-Leitão, 1932: 87; Kury, 2003: 72, 280.
Type Material:
Colombia
,
Cundinamarca
,
Between Tambo and Boca del Monte
(
4 males
syntypes
MNHN
, not examined;
1 male
syntype
SMF 285-32
examined by photos)
.
Other Examined Material:
Colombia
,
Cundinamarca
:
3 males
and
3 females
(
ICN-Ar-1659
),
Parque Nacional Natural Chicaque
,
4°36’5.6’’N
,
94°18’46’’W
.
Grupo Biología
leg.
15.X.2016
.
Diagnosis:
Ozopore dorsally located, with the ID mostly projected and an elongated slit of the ozopore extending towards the lateral margin of the DS (with a rounded ozopore in
R. artifex
sp. nov.
,
R. papilionaceus
,
R. quinquelineatus
,
R. serripes
, and
R. vulneratus
; in
R. serratus
comb. nov.
, the integumentary dome covers the ozopore and is well projected dorsally; in
R. gaiterus
sp. nov.
, there is no dorsal fold). The ocularium has a well-marked medial depression (not well-marked in
R. artifex
sp. nov.
,
R. florezi
,
R. gaiterus
sp. nov.
,
R. robustus
,
R. quinquelineatus
, and
R. serratus
comb. nov.
). Area III of the DS has a pair of prominent mammiliform tubercles close to each other (spiniform tubercles in
R. artifex
sp. nov.
and
R. gaiterus
sp. nov.
; mammiliform and smaller in
R. florezi
and
R. vulneratus
). Cx IV has
clavi inguines
formed by a mound with few granules (strongly granulated in
R. florezi
,
R. quinquelineatus
,
R. serripes
, and
R. vulneratus
). The dorsal apical apophysis on Cx IV is multicapitate, forming a keel slightly flattened laterally (not laterally flattened in the remaining species). The color pattern consists of two lateral longitudinal patches extending from the prosoma to the posterior areas of the DS (see
Fig. 8A–B
).
FIGURE 8.
Rhaucus marmoratus
comb. nov.
(ICN-Ar-1659) A. Male. Habitus, dorsal view; B. Female. Habitus, dorsal view; C–F. Penis: C. Dorsal view; D. Ventral view, arrow showing the areolated MS B.; E–F. Lateral view. Scales: 0.05 mm. Micrographs C–F. Courtesy of B. N. Damrom.
Penis Description:
(
Fig. 8C–F
) VP is short and squared. The glans has a dorsal process that is elongated and cylindrical, with wattle extending ventrally and bearing stylar barbs. Two pairs of MS C: C1 is mostly more curved than C2, with both being long and flattened. Two pairs of MS D: D1 is cylindrical and straight, closer to the pair C, while D2 is dorsally attached, short, and located in the middle portion of the VP. Two pairs of MS A: dorsally attached, straight, cylindrical, and bifurcated at the top. Two pairs of MS E are volcano-shaped, and a pair of areolate MS B is located at the base of the VP. The lateral fields of the VP are covered by microsetae
type
4, and the medial portion has some microsetae T2. The lateral corners of the VP are curved dorsally.