Oribatid Mites (Acari: Oribatida) From Venezuela, Ii. New Or Rare Species From Montane Forests
Author
Mahunka, S.
text
Acta Zoologica Academiae Scientiarum Hungaricae
2006
52
3
271
286
journal article
10.5281/zenodo.12585851
2064-2474
12585851
Sternoppia pocsiana
sp. n.
(
Figs 10–14
)
Diagnosis: Rostrum incised. Prodorsum well sclerotised, with long costulae. Sensillus with 4 simple and short branches. Notogastral setae simple, short. Epimeral region well framed, with characteristic plates. All epimeral setae long and conspicuously ciliate or plumose. In contrast, genital and anal setae shorter, but the aggenital and adanal ones are very long.
Figs 6–9.
Beckiella disiuncta
sp. n.
6 = body in dorsal view, 7 = body in ventral view, 8 = humeral part of the notogaster, 9 = leg IV
Figs 10–14.
Sternoppia pocsiana
sp. n.
: 10 = body in dorsal view, 11 = rostral apex in frontal view, 12 = body in ventral view, 13 = lateral part of the podosoma in lateral view, 14 = lateral view of the body
Material
examined:
Holotype
:
Estado
Mérida
.
Parque Nacional Sierra de la Culata
,
12 km
N of
Mérida
town.
Mossy
cloud forest at
2100 m
alt.
4 March 1997
. (
Coll. S.
&
T
.
PÓCS
) (9726).
Six paratypes
from the same sample.
Holotype
(1709-HO-05) and
5 paratypes
(1709-PO-05):
HNHM
and
1 paratypes
:
MHNG
.
Measurements: Length of body: 775–850 µm, width of body: 474–550 µm.
Prodorsum: Rostral apex with a deep, U-shaped incisure (
Fig. 11
). Prodorsal surface with a pair of long costulae, in front of them one pair of horseshoe-shaped formations (
Fig. 10
) and at the base of the rostral setae a thin, but distinct, arched transverse line present. Costulae reaching anterior to the insertion of the lamellar setae; rostral and lamellar setae nearly equal in length, interlamellar ones longer, all three pairs thin and well ciliate. Exobothridial setae also thin and smooth (
Fig. 13
). Sensilli very long, slightly dilated distally, with 4 simple distal branches, sometimes bearing some minute spines.
Notogaster: Nine pairs of simple notogastral setae present, setae
c
2 represented only by their alveoli. All other notogastral setae thin and simple, hardly ciliate. Setae
p
in postero-marginal position, somewhat shorter than the others.
Lateral part of podosoma: Well-sclerotised, a longitudinal laths observable as if a continuation of the pedotectum 1, behind the insertion of the exobothridial setae. Above the pedotectum 1 a conspicuous field consist of parallel lines (
Fig. 14
). Acetabula IV located far from acetabula III.
Ventral parts (
Fig. 12
): Setae
h
and all the other setae – except penicillate setae
4a
– with very long but sparse cilia. Two epimeral plates touching medially, their postero-median end sharply pointed and they eind, far from the genital opening. Genital opening much smaller than anal one, anterior genital setae longer than the others. All adanal setae located on the ventral plate in adanal position. Lyrifissures
iad
in adanal position, hardly observable.
Legs: Of the normal form, chaetome characteristic for the genus
Sternoppia
.
Remarks: On the basis of the simple sensilli the new species is well distinguishable from all congeners. A similar simple sensillus is known only in
Sternoppia
(
Synoppia
)
quadriseta
(
BALOGH
et
MAHUNKA
, 1969)
4
, however the latter has 2 pairs of very long notogastral setae, all other setae short, but in the new species 7 pairs are much longer than the others. The other species of the genus
Sternoppia
have ramifying branches of their sensilli.
Etymology: I dedicate the new species to my friends Prof. Dr. T.
PÓCS
and his wife
SACY
PÓCS
, for their joint and intensive collecting work all over the world.