Acrotritia species (Acari: Oribatida: Euphthiracaridae) from China with description of a new species
Author
Liu, Dong
Author
Chen, Jun
text
Zootaxa
2015
3937
1
127
146
journal article
10.11646/zootaxa.3937.1.6
0f2db9c4-a5ec-48f4-95c1-a85a5db492ff
1175-5326
245433
AB81AD93-60B2-4EDD-B0CB-100D94071F9C
Acrotritia
Jacot, 1923
Diagnosis.
Surface of body mostly finely punctuate or porose. Prodorsum without median crista, but with 1 or 2 pairs of lateral carinae; bothridial scales situated above the bothridia; posterior median apodeme present; setae in median (paraxial) position; exobothridial setae minute and fine; comparative lengths:
in–in
>
le–le
>
ro–ro
,
in
>
le
>
ro
>
ex
,
in–le
>
le–ro
. Notogaster with 14 pairs of setae,
c
1<
c
1–
d
1, setae
c
1 and
c
2 remote from anterior border more than setae
c
3, setae
ps
1 situated anterior to
ps
2–3 setae; openings of lateral opisthonotal glands present; 5 pairs of lyrifissures
ia, im, ip, ih
,
ips
and 2 pairs of vestigial setae
f
; terminal sinus at posterior end. Ventral region: setae
h
of mentum longer than distance between them; palps 3-segmented, with normal formula: 2-2-8(1); anogenital cleft absent; 1 interlocking triangle present; 3 pairs of anal setae,
an
1 and
an
2 rigid, smooth,
an
3 always minute; 3 pairs of rigid adanal setae similar to notogastral setae, longer than anal setae
an
1 and
an
2; lyrifissures
iad
located between
ad
3 and
an
3 setae. Legs: setae
d
of femora I always in the same position, slightly distanced from distal end of article; femora III with 2 setae; femora IV with 1 seta; trochanters I and II bearing 1 seta, III and IV with 2 setae; genua IV without solenidia; setae
d
on tibiae IV relatively long and not coupled with solenidia; solenidia of tarsi II without coupled setae; tarsi mono-, bi- or heterotridactylous.