Two new species of Foa (Apogonidae) from the Pacific Plate, with redescriptions of Foa brachygramma and Foa fo
Author
Fraser, Thomas H.
Author
Randall, John E.
text
Zootaxa
2011
2988
1
27
journal article
10.5281/zenodo.278368
98205113-9766-44ae-9ce2-5a3369087526
1175-5326
278368
Foa
fo
Jordan
and Seale, 1905
Figure 6–8
,
14–15
, table 1–4.
Material examined:
Lectotype
Foa
fo
CAS
SU 9672 metal tag, 41.0 mm SL, ~52.3 mm TL,
Philippines
, Luzon I., Cavite, 1901, G. A. Lung.
Other material.
Australia
:
AMNH
33738 (3, 15-19), Queensland, Endeavour reef,
7 Sep 1969
. AMS I.27783.003 (6, 18-37), Queensland, First Lagoon,
23.1°S
152.1°E
,
3–4 m
,
24 Nov 1987
.
Indonesia
:
BPBM
37336 (1,),
Flores
I., Maumere, off mouth of creek,
17 Nov 1996
.
USNM
261582 (1, 24), Sulawesi Ids., Kabaena I., Tallabassi Bay,
5°17'20"S
122°04'E
, VGS-74-
2, 2–15 m
,
25 Feb 1974
.
Taiwan
: SU 20996 (1, 46), Kaohsiung (Takao).
Philippines
:
CAS
SU 9672 (1, 45.5) 55.2 mm TL, Luzon I., Cavite, 1901, G. A. Lung. SU 20266 (1, 36), Iloilo, Panay I.
USNM
56279 (1, 37.5), Cavite, x-ray.
USNM
169162 (31, 15-32), Iloilo, (1, 33) cleared and stained.
USNM
171102
(2, 33-36), Albatross,
20 May 1908
, cleared and stained.
USNM
268164 (11, 17-25), Negros I., Canauay river,
09°3'N
123°03'48"E
, LK 79-12, 0–0.9 m,
9 May 1979
.
USNM
344871, (39, 16.6-33.2), Negros, Dumaguete Market,
27 Mar 1976
.
Palau
,
CAS
83099 (2, 27-27), Urukthapel I.,
07°16'18 "N
134°26'43 "E
,
GVF
0 483, 2.5 m,
12 Sep1954
.
Saipan
:
USNM
154270 (1, 34.1), West Lagoon,
3 Apr 1949
.
Guam
:
UGM
6658 (1, 29), Tumon Bay, photograph.
Caroline Islands
:
USNM
235047 (3, 19-34)
Ponape
, South of Nanmatol I.,
06°50'45"N
158°19'00"E
, RC-3, 0–.
5 m
,
4 Jul 1981
.
Papua New Guinea
:
USNM
262582 (5, 23-37), Trobriand Is., Kiriwina I.,
08°31'48" S
150°59' 36"E
, BBC 1694, 0–0.6 m,
16 Jun 1979
.
USNM
370287 (12, 18.8-36.0), Taurama Pt, SE of Port Moresby, BBC 1527,
20
Jun1970.
New Caledonia
:
BPBM
28668 (1, 28), Noumea, channel beween
Ile
Canards and
Ile
Maitze,
20 m
,
19 Mar 1975
.
SMNS
19730 (1, 28), Grande Terre, Bale de Port-Bouquet,
21°42'35"S
166°23'57"E
, 0.5–
2 m
,
8 Nov 1997
.
SMNS
21557 (6, 21-38), Grande Terre, Enghoue,
22°09'14"S
166°14'33"E
, 0–0.1 m,
13 July 1999
.
13 July 1999
.
SMNS
22854 (2, 21-30),
Ile
des Pins,
22°34'05"S
167°25'23"E
, 0–2.5 m,
16 May 2000
.
SMNS
22997 (3, 19-27), Grande Terre, Baie de Pritzbue, at Bourake,
21°57'32"S
165°59'20"E
, 0–2.5 m,
23 May 2000
.
USNM
268244 (2, 22-24), Grande Terre, Chenal
De
L'Ilot Maitre,
18–
25 m
.
Solomon Islands
:
USNM
358155 (1, 23), Santa Cruz Islands, Duff Islands, Taumako
Island
, 09.9°
167.1583°W
, SOL 98-21, 0.5m,
22 Sep 1998
.
Fiji
:
USNM
262588 (16, 26-37), Matuku I, main harbor,
19°09'38"S
179°45'23"E
, VGS 82-3,
23
Apr 1982.
USNM
262592 (1, 22), Naviti I.,
17°06'S
177°13'E
, VGS 82-32,
28
May 1982.
Samoa
:
AMNH
58010 (4, 15-32), Tutuila I.,
Pala
lagoon near center, PH-72-II-29,
29
Feb 1972.
USMN
51735 (1, 26.7), Upolu, Apia, 1902, D.
Jordan
and V. Kellogg, x-ray (in poor condition).
USNM
220060 (2, 24-25), Tutuila I., Fatu Mufuti,
0–36 m
, 1977.
USNM
325625 (2, 21-33),
Western Samoa
on Reef Flat near Apia,
0–2 m
,
24 Mar 1979
.
Wallis
Islands
:
USNM
376768 (1, 27),
Ile
Uvea, on reef flat off NW end of island, just off Afe Utu'uhu,
13.2181°S
176.219°E
, JTW
2000-
17
, 1m,
11 Nov 2000
.
USNM
376748 (4, 31-37 mutilated),
Ile
Uvea, outside barrier reef at NW end of island,
13.2097°S
176.246°E
, JTW
2000-
16
, 22m,
11 Nov 2000
.
Tonga
Islands
:
BPBM
38308, (2, 44.1-53.5),
Tonga
,
Mar 1983
.
French Polynesia
:
CAS
83106 (23, 17-42), Tahiti, Taravao, lagoon,
GVF
1104, 1 m
,
21Apr1956
.
FIGURE 6.
Foa
fo
: A. Live from Palau by Hirashi Nagano. B. Post mortem USNM 28.7 mm SL, Wallis I, by J. T. Williams. C. Live from Sharm el Shiekh, Egypt by Jean Louis Rose. D. False type of
Foa
fo
, USNM 51735, 27 mm SL, Samoa, Upolu, Apia, in Jordan and Seale (1906), digital scan of original published as fig. 42, drawn by Chloe Starks.
Diagnosis.
Pored lateral-line scales usually 8–12; gill rakers and rudiments usually 13–15; body scales margins uniform to pale edging; body mottled brownish with five darker irregular bars, first anterior to origin of first dorsal fin, second from posterior half of first dorsal fin through posterior half of pelvic fin, third narrow bar between soft dorsal and soft anal fins, fourth on caudal peduncle, fifth at base of caudal fin; whitish spot on axil of pectoral fin; three whitish basicaudal spots partially in darkish basicaudal bar; whitish spot behind posterior base of soft dorsal fin; second dorsal fin, anal fin and caudal fin pale with darkish banding.
Description.
Range of proportions as percent of standard length in
Table 1
. The
lectotype
is described and variation is given in Tables 2–4.
Dorsal fin IX spines as VII(I)-I,9, third spine longest and strongest, sixth radial free in advance of hidden nubbin representing eighth spine; anal fin II,8; pectoral-fin-rays 12; pelvic fin I,5; principal caudal rays 1-8+7+1; lateral-line scales 23 with 14 pored and 9 partial pores and pits (
Table 4
); transverse scale rows above lateral line 1; transverse scale rows below lateral line 4; median predorsal scales 4; circumpeduncular scale rows 12 as 5+2+5; gill rakers + rudiments 14 (
Table 3
), well- developed rakers 8, upper arch with 2 rudiments and 1 raker, lower arch with 7 rakers and 4 rudiments; second arch with rudiments on hypobranchial and ceratobranchial with one raker at angle.
Villiform teeth in a band on the premaxilla and dentary; 2–3 rows on vomer; 3 rows on the palatine; none on ectopterygoid, endopterygoid or basihyal.
FIGURE 7.
Foa
fo
, AMS I.27783-003, 36 mm SL. semi-diagrammatic views of the head. A. dorsal. B. right side reversed. C. lower jaw, right side, reversed. pores = shaded; free neuromasts (dots).
FIGURE 8.
Foa
fo
. A. AMS I.27783-003, semi-diagrammatic views opercular region with pores (shaded) and free neuromasts (dots). B. AMS I.27783-003, 28.9 mm SL, scales at the base of the caudal fin with ctenoid and cycloid scales, last pitted lateralline scale, and free neuromast (dots) patterns on scales. Right side laterally reversed.
Vertebrae 10+14; five free hypurals; one pair of short, slender uroneurals; three epurals, the first two expanded, a free parhypural; three supraneurals, no procumbent spines (spurs); two supernumerary spines on first dorsal pterygiophore, no procumbent spines (spurs); basisphenoid reduced to upper portion (meningost); supramaxilla thin and reduced in length; posttemporal smooth on posterior margin; preopercle smooth on vertical and horizontal edges, ridge smooth; infraorbitals smooth, infraorbital shelf present on third bone; interhaemal gap 1+4 (Table 2).
Peripheral ctenoid scales on cheek, subopercle, opercle, isthmus, base of pectoral fin, ctenoid behind pectoral fin and on body, nape and predorsal scales ctenoid; two large cycloid scales on base of pelvic fin, no axillary scale; cycloid scales onto caudal fin about same size as scales on caudal peduncle.
Head of
lectotype
with skin congealed, obscuring pore openings and without evidence of sensory neuromasts; anterior end of supra-orbital canal as a broad slit at edge of upper lip curving up distally; lachrymal with large anterior pore near flat posterior nare opening, two large ventral slit pores along edge of lachrymal; anterior portion of dentary with dentary (anterior) and mental (ventral) pores, posterior with a large articular pore; supratemporal canal with posterior canals onto first nape and predorsal scales.
Head of
lectotype
with most free neuromasts missing. Free neuromasts on snout, interorbit and temporal areas in (
Fig. 7
A), a split line becoming one line of neuromasts from snout interrupted over eye, offset, not overlapping, continuing onto side of head below posttemporal, short lines generally perpendicular to long lines, short medial lines associated with commissure region, supratemporal neuromasts missing; several rows of neuromasts between nares and anterior infraorbital oriented horizontally and vertically; a long linear line of neuromasts from first infraorbital (lachrymal) past posterior corner of maxilla dividing on to lower cheek horizontally as well as downward, short lines of neuromasts radiate from ventral and posterior edge of eye (
Fig. 7
B); three or four rows of neuromasts on anterior third of lower jaw grading posteriorly to one row near edge of articular pore (
Fig. 7
C), gular free neuromasts in chevron rows except for anterior two rows; preopercle with single long vertical line of neuromasts on upper arm from posterior part of lower arm (7C & 8A); preopercle flap (horizontal arm) with short rows of various orientations; (
Fig. 8
A); opercle with short vertical row of neuromasts on upper anterior scale (
Fig. 8
A), a long vertical row near preopercular edge, a row on posterior scale, and two areas with neuromasts on opercular flap; pored lateral-line scales with vertical rows of neuromasts above and below canal pore;, first scale with pit with a reduced row above pit, free neuromasts on other pit scales and several small caudal scales, no free neuromasts observed on other basicaudal scales (
Fig. 8
B); free neuromasts associated with 11 principal caudal fin-rays in single linear lines on ventral edges of upper branched rays (3–8) and on dorsal edges of lower branched rays (11–15), middle two caudal rays (9–10), upper unbranched and branched caudal rays (1–2), and lower unbranched and branched caudal rays (16–17) lack free neuromasts as in fig. 5B.
Anterior nare tubular, posterior nare flat.
Caudal fin rounded, broken in
lectotype
; second dorsal and anal fin with rounded distal edges.
Life colors.
Figure 6
A. Head, body, first dorsal and pelvic fins brown with white spots and markings; darker brown bar-like markings on head and body, a cheek mark from eye to upper jaw, a mark above preopercle over anterior nape, one or two short marks above opercle not reaching base of first dorsal fin, an irregular bar from near mid-base of first dorsal fin to side of abdomen, an irregular bar from base of soft anal rays to base of soft dorsal rays, an anterior caudal peduncle mark, and diffuse basicaudal marks; lips brownish with narrow alternating white marks; edge of eye with alternating brown and white markings; irregular whitish spots on body and caudal peduncle, a white spot at upper pectoral fin base, a white spot at mid-base of soft dorsal rays, a white spot and posterior base of soft dorsal fin, three basicaudal white spots; membranes between second to fourth dorsal spine more whitish than brownish, fourth to seventh membranes more brownish than whitish; base of pelvic rays to tip of spine whitish, remainder of fin brownish; soft dorsal, anal and caudal fin rays with tiny white spots on translucent fins. See
Kuiter and Kozawa (2001, p. 95, figs. A–C & E)
for color variations from
Indonesia
.
Post mortem color pattern.
Figure 6
B. Head and body tan with brown markings, whitish spots in life mostly not apparent except for pale area at posterior base of second dorsal fin and three pale areas on base of caudal fin outlined by two darker spots; diffuse cheek mark; faint markings on body consistent with dark markings in life; first dorsal fin dusky with mid-paler region; second dorsal fin with brownish base and tiny dark markings on rays and pale membranes; pelvic, anal and caudal fin rays with tiny dark markings on rays and pale membranes
Preserved color pattern.
The
lectotype
has no markings on head, body or fins. Other material is consistent the description by
Jordan
and Seale (1905) of
Foa
fo
from the
Philippines
as follows: “Color in spirits, yellowishwhite, mottled with brownish, the mottlings assuming a more or less irregular band-like arrangement over back and sides; a dark stripe from lower posterior margin of orbit to lower limb of preopercle; a dark band over posterior part of nuchal region; about 5 very indistinct darker bands around under part of head; spinous dorsal with two dusky blotches; soft dorsal yellowish; anal yellowish with about 5 indistinct brownish lines; ventrals with inner half and posterior part deep black; pectorals yellow; caudal yellow with four indistinct cross-bands of dusky; iris golden, darker above”.
Figure 6
D is from
Jordan
and Seale (1906) who described
Foa
fo
from
Samoa
as follows:
“Color in spirits, yellowish white, the scales shaded more or less with light brown; five diffuse, irregular vertical cross-bands of dusky, the first in front of dorsal, the second from middle of spinous dorsal, the third from base of soft dorsal, the two posterior ones encircling caudal peduncle; there is also a more or less distinct dusky area on nuchal region; dusky cross-shades under chin; the fins, except pectorals, all more or less indistinctly blotched with dusky, the spinous dorsal being black at tip with a lighter area in middle and dusky at base; anal shows indications of three or four darker cross-shades; ventral dusky; a dark spot on opercle, just posterior to eye; upper portion of orbital and snout shaded with dusky”.
Figure 6
C show a typical color pattern of a tannish background with darker markings generally consistent in location with post mortem and live color patterns; an additional post ocular mark is more apparent extending from eye to near origin of the lateral line scales.
Distribution.
Widespread, found on most Pacific Plate islands out to
French Polynesia
, islands bordering the Pacific Plate,
Australia
, New
Guinea
,
Philippines
(
Fig 14
). Although we did not report on material from the Indian Ocean,
Gon and Randall (2003)
reported from East Africa and the Red Sea.
Remarks.
We regard color descriptions in
1905 and 1906
by
Jordan
and Seale as being fairly consistent and without significant variances that might suggest two different species. Color photographs suggest that another species of
Foa
may be present in the
Philippines
,http://fishpix.kahaku.go.jp/fishimage-e/index.html #KPM- NR0035772 from Cebu I. The location of the
syntype
of
Foa
fo
from Negros,
Philippines
is unknown. There were two specimens in CAS SU 9672 from Cavite. Lengths were not given in the original description for the Cavite specimen. We chose one. There are several live photographs (#945135-37, 39; 954289; 95911-12) of
Foa
fo from Leyte and Bohol,
Philippines
(http://www.poppe-images.com/index.php?t=1).
Gon and Randall (2003)
also discussed the connected history of
Foa
fo
and
F. brachygramma
as well as the false
type
from
Samoa
identifying
F. f o
from the Red Sea. The fish from Inhaca,
Mozambique
in their plate
5I
may represent a different species, most likely
Foa madagascarensis
Petit, 1931
, given his color description: “
Coloration
(en alcool). -— Couleur générale brun chamois, plus claire sur le ventre. Tout le corps marqu d'un pointill de petites taches brunes, plus grosses et plus espacées sur les écailles du ventre. Membrane unissant les rayons de la première dorsale de couleur foncée (fum fonc). Celle qui unit les rayons de la seconde dorsale, plus claire. Les rayons branchus de la ventrale ont une extrémit claire, suivie d'une longue zone noire. La base est claire. Pectorale et caudale claires”. “Ground color brown yellow, paler on abdomen. All of the body marked with linear small brown spots becoming larger and farther apart on abdominal scales. First dorsal fin membranes darkish. Membranes of the second dorsal fin lighter than in the first dorsal fin. The branched rays of the pelvic fin have pale tips and distally black except for the base which is pale. Pectoral and caudal fins pale”. Specimens of
Foa
from
Madagascar
(USMN 203771),
South Africa
(ANSP 53447) and
Tanzania
(USNM 344874) are consistent with Petit’s color description about having small brown spots. No such color description was given for the Red Sea specimens provisionally identified by
Gon and Randall (2003)
but their description of bars on the body and caudal peduncle are suggestive of
Foa
fo
. An underwater photograph by M. Hackenberg from the Red Sea (
Lieske and Myers, 2004:90 misidentified as
Fowleria vaiulae
) has the whitish spots and irregular brown bars on a light brown ground color as seen on
Foa
fo
as do underwater photographs from J. L. Rose at Sharm el Sheik in the northern Red Sea (
Fig. 6
c). Allen in
Randall and Lim (2000)
listed
Foa madagascarensis
from the South
China
Sea, likely one of the other species.