Sumatrellachelonica gen. n., sp. n., a new remarkable genus and species from Indonesia, Sumatra (Acari, Uropodina, Oplitidae)
Author
Kontschan, Jeno
text
ZooKeys
2015
484
1
10
http://dx.doi.org/10.3897/zookeys.484.8836
journal article
http://dx.doi.org/10.3897/zookeys.484.8836
1313-2970-484-1
CEDA3018E88744E8AE5DAEF6CF2A780A
CEDA3018E88744E8AE5DAEF6CF2A780A
Taxon classification Animalia Mesostigmata Oplitidae
Sumatrella
gen. n.
Diagnosis.
Idiosoma small, oval, posterior margin rounded and very convex. All part of marginal shield wide and fused anteriorly to dorsal shield. Dorsal and ventral setae smooth and needle-like. Genital shield of female octagonal, without sculptural pattern and anterior process. Dorsal and marginal shields neotrichous. Corniculi horn-like, internal malae with several long branches. Hypostomal setae h3 longer than others, h2 situated outside the longitudinal row h1-h4 and shorter than others. Tritosternum with narrow basis, laciniae divided into two short and two long pilose branches. Epistome hemispherical and marginally pilose. Leg I without claw, trochanters II-IV with a triangular process.
Type species.
Sumatrella chelonica
sp. n.
Etymology.
The name of the new genus refers to the name of island where the specimens were collected. Gender feminine.
Systematic notes.
On the basis of the shape of internal malae (divided into pilose branches), the absence of the T-shaped dorsal setae and the hypostomal setae h2 position lateral to row h1-h4, I refer this genus to
Oplitidae
. Recently several genera and
species
groups have been recognized in this family (
Kontschan
2010
,
Kontschan
and
Stary
2012
,
Wisniewski
and Hirschmann 1993
), but the new genus differs from the others on the basis of the very convex idiosoma, the octagonal genital shield and the wide marginal shield. Only the genus
Chelonuropoda
Sellnick, 1954 shares this combination of character states with the new genus (i.e. very convex idiosoma and wide marginal shield) but the former differs in several characters, the most important of which are summarized in Table 1.
Table 1. The distinguishing characteristics between
Chelonuropoda
Sellnick, 1954 and
Sumatrella
gen. n.