Labrumoides vibrissa (Arthropoda: Pycnogonida), new callipallenid genus and new species from north Western Australia
Author
Staples, David A.
text
Zootaxa
2020
2020-03-18
4751
3
575
581
journal article
10.11646/zootaxa.4751.3.9
6ef64f69-6a70-4898-9fbc-2b2b2b77c9e7
1175-5326
3714805
98C76D53-2CC6-4E23-9693-DD000C288BF0
Genus
Labrumoides
gen. nov.
urn:lsid:zoobank.org:act:
1576063B-6B48-4C7F-862D-C4EC01AC64AC
Diagnosis.
Octopodous. Trunk slender, segmented, lateral processes about as long as wide, distinctly separated but by less than own diameter; neck short, broad distally, constricted at base. Ocular tubercle about as tall as wide, placed level with the anterior margin of first lateral processes, four eyes. Oviger ten-segmented, base in contact with first lateral processes, segment 5 longest, spines compound, terminal claw well-developed, denticulate on one margin. Chelifores two-segmented, chelae well developed, fingers digitiform, aligned vertically to each other and held in prolongation with the palm, fixed finger without chitinous cutting edge, rounded in cross-section, terminating in a beak-like process, outer distal bulge on fixed finger with four robust, blunt spines and many smaller pointed spines; scape one-segmented, female with proximal constriction. Proboscis transitioning seamlessly from a proximal inflated part to a narrower distal part terminating in three lips fringed with setae, chitinous oral plates absent. Abdomen of medium length, erect. Palps absent. Legs slender, femoral cement glands ventral, series of flush points, tarsus short, auxiliary claws absent. Genital pores ventrodistal, second coxa all female legs, male not recorded.
Type
species.
Labrumoides vibrissa
sp. nov.
Etymology.
The generic name
Labrumoides
is derived from the Latin word
labrum
; a lip, and alludes to the lip-like structures surrounding the mouth opening. Gender is feminine.
Distribution
North Western Australia at
41 m
depth. Should the assignment of
C. hirta
to
Labrumoides
be confirmed, then distribution will extend to
Japan
and Aldabra Atoll,
Seychelles
and the bathymetric range from intertidal to
41 m
.