Six new species of ptyctimous mites (Acari: Oribatida) from Madagascar
Author
Niedbała, W.
Author
Starý, J.
text
Acarologia
2016
2016-09-30
56
4
485
496
http://dx.doi.org/10.1051/acarologia/20164134
journal article
10.1051/acarologia/20164134
2107-7207
5402188
D34C5F4B-C2C8-4FD4-9C1D-AD3E76EC207A
Phthiracarus paracrispus
n. sp.
(
Figures 3
)
Description
Measurements of
holotype
— Prodorsum: length 283, width 202, height 101; prodorsal setae: sensillus (
ss
) 66, interlamellar (
in
) 126, lamellar (
le
) 101, rostral (
ro
) 68, exobothridial (
ex
) 58; notogaster: length 581, width 379, heigh 328; notogastral setae:
c
1
152,
c
1
/
c
1
-
d
1
=1.1,
h
1
and
ps
1
94.
Species of medium size; colour greyish.
Prodorsum — with median and lateral fields distinct long and narrow. Lateral carinae long, exceeds the sinus. Posterior furrows not visible. Sensilli (
ss
) long, thin, smooth, enlarged in their proximal third and ending in a point. Interlamellar (
in
) and lamellar (
le
) setae fine, smooth, semi-erect; rostral setae (
ro
) curved and directed downwards; exobothridial setae (
ex
) rather long, almost as long as
ss
and
ro
; relative length of prodorsal setae
in
>
le
>
ro
=
ss
>
ex
.
Notogaster — with fine, rather long notogastral setae (
c
1
>
c
1
-
d
1
); setae
c
1
and
c
3
slightly remote from anterior notogastral margin, setae
c
2
far from the margin. Vestigial notogastral setae
f
1
located posteriorly of
h
1
setae; two pairs of lyrifissures
ia
and
im
present.
Ventral region — Setae
h
of subcapitular mentum shorter than distance between them. Genitoaggenital plate with 9 genital setae with formula: 7(4+3): 2. Anoadanal plates with five pairs of welldeveloped setae; anal setae considerably longer than adanal setae, adanal setae
ad
1
and
ad
3
short,
ad
2
minute.
Legs — Chaetome of legs complete; setae
d
of femora I thin, remote from distal end of article.
Material
examined —
Holotype
is deposited at
DATE
from locus typicus:
Madagascar
,
Ankarafantsika National Park
,
23. IV. 2011
, lowland forest, latitude
16°18’05,9" S
, longitude
46°49’06,4" E
, altitude
71 m
, sifted sample of forest litter,
Winkler
apparatus extraction, leg.
L. S. Rahanitriniaina
and
R
.
Raveloson
;
Etymology — The prefix
para
is Latin meaning "near" and refers to the similarity of the new species with
P. crispus
Hammer, 1972
.
Comparison — The new species is similar to
P
.
crispus
Hammer,
1972
in the characters of prodorsum, especially in the shape of sensilli. It is distinguishable by longer notogastral setae
c
1
;
c
1
>
c
1
-
d
1
, (versus
c
1
<
c
1
-
d
1
); notogastral setae
c
1
and
c
3
slightly remote from anterior margin, setae
c
2
far from margin (versus
c
3
almost near margin and
c
1
and
c
2
slightly remote from margin); vestigial notogastral setae
f
1
located posterior of
h
1
(versus anterior of
h
1
); setae
h
of subcapitular mentum shorter than distance between them (versus, longer of distance); formula of genital setae 7(4+3): 2, versus: 7(4+2): 3; adanal setae
ad
2
minute (versus
ad
2
rather long, similar in the length to other adanal setae); chaetome of legs complete (versus chaetome of legs incomplete) (
Hammer 1972
).