Endevouridae, a review with description of four new species (Crustacea, Amphipoda, Lysianassoidea)
Author
Lowry, James K.
Author
Hughes, Lauren E.
text
Zootaxa
2015
4018
1
1
34
journal article
10.11646/zootaxa.4018.1.1
5d383bac-0e92-4bc1-ba10-6785d813dcf1
1175-5326
289425
625A2CC6-303A-4ECE-A330-C26E226E0985
Ensayara ramonella
J.L. Barnard, 1964
(
Fig. 21
)
Ensayara ramonella
J.L. Barnard, 1964
: 80
, fig. 7.—
Barnard & Thomas, 1990
: 121
(key).—
Barnard & Karaman, 1991
: 484
.
Type
material.
Holotype
, ovigerous female,
2.2 mm
,
USNM
107585. [Not examined].
Type
locality.
Immediately south of cannery, Bahia de San Quintin, Baja California,
Mexico
, eastern North Pacific Ocean, (approx.
30°30'N
,
116°00'W
),
2–3 m
depth.
Diagnosis
. Head lateral cephalic lobe rounded. Maxilla 1 palp article 2 with 1 seta. Maxilliped inner plate without robust setae. Coxae 1 to 3 ventral margin without fine setae. Gnathopod 1 basis anterior margin smooth, not cuspidate. Pereopod 3 carpus subtriangular, posterior margin as long as free proximal margin of propodus, posteroproximal margin slightly produced; propodus length 1.7 × width, posteroproximal margin not produced, palm obtuse, weakly convex. Epimeron 3 posteroventral corner subquadrate. Uropod 3 outer ramus article 2 length 3 × width; inner ramus shorter than article 1 of outer ramus.
Telson
about as long as broad, length 1 × breadth.
Description of
holotype
.
Head
lateral cephalic lobe rounded, ventral margin straight.
Antenna 1
peduncular article 3 hidden in medial view; accessory flagellum 4-articulate; primary flagellum 5-articulate.
Mandible
incisor subquadrate, margin near smooth; palp attached about midway, just proximal to molar, palp article 2 length 1.4 × article 3.
Maxilla 1
inner plate without apical setae; outer plate with 7 setal teeth.
Maxilla 2
inner plate apically rounded, much shorter than outer plate.
Maxilliped
inner plate apically cuspidate, without robust setae; outer plate margin cuspidate with 4 embedded robust setae; palp article 4 slender, claw-like, unguis present.
Pereon.
Coxae 1–3
ventral margin without fine setae.
Gnathopod 1
simple; basis anterior margin smooth, not cuspidate; carpus length 1.1 × width, 0.8 × propodus length; dactylus posterior margin smooth.
Gnathopod 2
minutely chelate.
Pereopod 3
chelate; merus length 1.3 × width, subequal to carpus length; carpus subtriangular, posterior margin as long as free proximal margin of propodus, posteroproximal margin slightly produced; propodus length 1.7 × width, posteroproximal margin not produced, palm obtuse, weakly convex.
Pereopods 5–7
basis posterior margin expanded, convex; merus posterior margin expanded.
FIGURE 21.
Ensayara ramonella
J.L. Barnard, 1964
, holotype female, 2.2 mm, USNM 107585, Bahia de San Quintin, Baja California, Mexico, eastern Pacific Ocean. Scale 0.1 mm.
Pleon.
Epimeron 1
posteroventral corner rounded.
Epimera 2–3
posteroventral corner subquadrate.
Uropods 1–2
peduncle with 1 apical robust seta; outer ramus with 1 lateral robust setae; inner ramus without robust setae.
Uropod 3
peduncle without robust setae; inner ramus shorter than article 1 of outer ramus, lined with short robust setae; outer ramus 2-articulate, article 2 length 3.5 × width.
Telson
about as long as broad, length 1 × width.
Distribution.
Mexico
: Baja California (
Barnard 1964
).