The Pachynidae fam. nov. (Crustacea: Amphipoda: Lysianassoidea) 3246
Author
Lowry, J. K.
Author
Stoddart, H. E.
text
Zootaxa
2012
2012-03-23
3246
1
1
69
https://biotaxa.org/Zootaxa/article/view/zootaxa.3246.1.1
journal article
10.11646/zootaxa.3246.1.1
11755334
5249007
Prachynella
J.L.
Barnard, 1964
Prachynella
J.L.
Barnard, 1964: 232
. ―J.L.
Barnard, 1969a: 359
. ―
Lowry, 1984: 72
. ―
Diviacco & Ruffo, 1989: 538
. ―
Barnard & Karaman, 1991: 520
.
Type
species
.
Prachynella lodo
J.L.
Barnard, 1964
, by original designation.
Diagnostic description.
Body shape slender. Head lateral cephalic lobe large, broadly or narrowly rounded. Antenna 1 peduncular article 1 with posterodistal spine; accessory flagellum article 1 short; flagellum with callynophore in female.
Mandible
with accessory setal row present on both sides or absent;
left lamina dentata vestigial or absent
; palp attached midway or distally;
palp
article 2 broad,
article 3 with subparallel margins or with anterior margin convex, not tapered distally. Maxilla 1 outer plate setal-teeth with medial cusps, at least one inner row setal-tooth absent; palp vestigial, 1-articulate. Maxilliped
inner plate small; outer plate large;
palp 3- articulate (articles 1–2 fused)
. Gnathopod 1 ischium smaller than propodus; corner of palm with complex robust seta. Gnathopod 2 palm obtuse or transverse. Epimeron 3 posteroventral corner broadly rounded. Uropod 3 biramous.
Species composition.
Prachynella
contains 5 species:
P. epa
sp. nov.
;
P. lodo
J.L.
Barnard, 1964
;
P. mediterranea
(
Ruffo, 1975
)
;
P. oculata
sp. nov.
;
P. shijiki
sp. nov.
Distribution.
Mediterranean Sea, western and eastern North Pacific Ocean;
0–2010 m
depth