Taxonomical And Faunistical Studies On Oribatids Collected In Kenya (Acari: Oribatida) I.
Author
Mahunka, S.
Author
Mahunka-Papp, L.
text
Acta Zoologica Academiae Scientiarum Hungaricae
2007
2007-02-28
53
1
51
74
journal article
10.5281/zenodo.12585708
2064-2474
12585708
Ramusella (Rectoppia) pararadiata
sp. n.
(
Figs 30–33
)
Diagnosis – Rostrum conical. In front of the lamellar setae a fine transversal line present, a pair of separate longitudinal ones also observable. Rostral setae straight, arising in divergent position. Three pairs of maculae in the interbothridial region. Sensillus fusiform, bearing long cilia of different lengths. Nine pairs of notogastral setae. Exobothridial and epimeral regions well sclerotised, on the sejugal border a pair of conspicuously large tubercles present. Genitoanal setal formula: 5–1–2–3.
Material
examined:
Holotype
:
Kenya
,
Nairobi
,
19.11.2004
.
Leg.
CS
.
CSUZDI
, (Afr. 974)
,
5 paratypes
from the same sample.
Holotype
(1695-HO-2005) and
4 paratypes
1695-PO-2005):
HNHM
,
1 paratypes
:
MHNG
.
Measurements: Length of body: 258–286 µm, width of body: 137–148 µm.
Prodorsum: Rostral region broad, rostral apex rounded, conical. Rostral setae located near to each other, on the median surface. A fine transversal line observable in front of the lamellar setae, from which a pair of short lines run posteriorly. One pair of arched lines – like fine costulae – also observable, separately from the preceding one. Three pairs of distinct maculae medially, and some irregular pairs laterally. Interbothridial region framed by a distinct line basally (
Fig. 31
). Ratio of the length of prodorsal setae:
ro in ex
@
le
. Setae
ro
well pilose. Bothridium strongly sclerotised. Sensillus directed laterally, fusiform. Its head bearing progressively longer cilia from basal to distal end, on both lateral margin.
Notogaster: Ovoid in shape. Nine pairs of medium short, simple notogastral setae and the alveoli of setae
c
2 present. Setae
p1
and
p2
shorter than the remaining notogastral setae. No essential difference among the latter ones,
Lateral part of podosoma (
Fig. 33
): Strongly sclerotised and well granulate. Pedotecta 1 comparatively large, pedotecta 2–3 reduced. Discidium sharply pointed.
Ventral regions (
Fig. 32
): All epimeral borders – except the anterior part of the longitudinal one – well sclerotised and broad. A distinct polygonal pattern visible. A pair of round porose field observable on epimere 1 and a pair of large and strong tubercles on the sejugal border visiblet. Epimeral setal formula: 3–1–3–3, setae
1c
arising on the lateral margin, on small tubercles. Except setae
3c
and
4c
, all setae short and simple. Setae
4b
located on posterior border of epimeral region. All setae also simple in anogenital region, setae
ad
1 arising on a strong lath, setae
ad
3 located far from each other, near to the lateral margin of the ventral plate.
Figs 31–33.
Ramusella (Rectoppia) pararadiata
sp. n.
– 31 = body in dorsal view, 32 = body in ventral view, 33 = prodorsum in lateral view
Remarks – The new species stands nearest to
Ramusella (Rectoppia
)
radiata
BALOGH
, 1961
, however, it is dinginguish from the
BALOGH’
s species by the presence of the transversal lines on prodorsum and the large tubercles on the epimeral and sejugal regions. The ratio of the notogastral setae (
p1
and
p2
) also different. Porose field on epimere 1 was not known in this relationship.
Etymology – Named after its relation.