Aglaophenia cristata McCrady, 1859: 202
Aglaophenia cristata ( Lamarck, 1816 )
Aglaophenia pluma ( Linnaeus, 1758 )
Aglaophenia trifida L. Agassiz, 1862: 358
Some shallow-water hydroids (Cnidaria: Hydrozoa) from the central east coast of Florida, USA
Calder, Dale R.
Zootaxa
2013
2013-05-14
3648
1
1
72
5TRH7
L. Agassiz, 1862
L. Agassiz
1862
[151,596,151,177]
Hydrozoa
Aglaopheniidae
Aglaophenia
Animalia
Leptothecata
48
49
Cnidaria
species
trifida
Fig. 14d
Aglaophenia cristata McCrady, 1859: 202[not Aglaophenia cristata( Lamarck, 1816)= Aglaophenia pluma( Linnaeus, 1758)]. Aglaophenia trifidaL. Agassiz, 1862: 358.
Typelocality. USA: South Carolina, Sullivan’s Island(stranded on the beach) and Charleston( McCrady 1859: 203, as Aglaophenia cristata). Voucher material. Off Sebastian Inlet, 27°51.5’N, 80°09.5’W, 26 m, 01.iii.1974, Smith-McIntyre grab, R/ V GosnoldStation222/276E, one colony, 8.5 cmhigh, without gonophores, ROMIZ B1126.— Nearshoreoff Fort Pierce, 27°29.6’N, 80°17.0’W, 5–8 m, 02.v.1975, one colony, 4.5 cmhigh, without gonophores, coll. F. Stanton, ROMIZ B3980.— Nearshoreoff Fort Pierce, 27°29.6’N, 80°17.0’W, 7–8 m, 10.vii.1975, SCUBA, one colony, 4.2 cmhigh, without gonophores, coll. F. Stanton, ROMIZ B3981.
Remarks. This hydroid was first described as Aglaophenia cristata( Lamarck, 1816)by McCrady (1859). He suspected it was distinct from that European species, now known as Aglaophenia pluma( Linnaeus, 1758), but had no material of the eastern Atlantic form to verify his conjecture. The binomen A. trifidawas applied to the species a short time later by L. Agassiz (1862). Although Agassiz neither described nor illustrated it, the specific name trifidais nevertheless available from that work because a bibliographic reference to McCrady’s earlier description (ICZN Art. 12.2) was provided. Aglaophenia rigida Allman, 1877, described from material collected during explorations of the GulfStream region by L.F. de Pourtalès, is morphologically similar to A. trifida. The two had been distinguished by Fraser (1944)based on the number of cusps on the hydrothecal margin, with eight reported in A. rigidaand nine in A. trifida. After examinating typematerial of A. rigidaand finding nine rather than eight cusps to be present, I synonymized the two names ( Calder 1983). Aglaophenia trifidaresembles A. pluma, a European species re-described on the basis of a neotypeby Svoboda & Cornelius (1991). Median inferior nematothecae extend a greater distance along the abcauline wall of the hydrotheca in A. pluma, and its corbulae are shorter (usually with about 5–10 ribs instead of 12–14). Aglaophenia trifidais held to be distinct here. Nutting (1900)found Aglaophenia rigida(= A. trifida) to be abundant along the Carolina coast south of Cape Hatteras in Albatrosscollections, and concluded that it was likely the most abundant species of the genus Aglaophenia Lamouroux, 1812on the American Atlantic seaboard. Fraser’s (1912b)report of this rather large species (as A. rigida) from Sargassumnear Beaufort, North Carolina, is regarded here as a misidentification. Records of A. trifidafrom areas outside the southern United Statesneed verification. Reported distribution.Atlantic coast of Florida. First record. Western Atlantic. North Carolina ( Nutting 1900, as Aglaophenia rigida) to Brazil(Oliveira et al. submitted), and including the Gulf of Mexico ( Calder & Cairns 2009) and the Caribbean Sea ( Fraser 1944, as Aglaophenia rigida). Elsewhere. Questionably reported from the eastern Pacific ( Fraser 1948, as Aglaophenia rigida).
United States of America
Charleston
Sullivan's Island
48
49
1
South Carolina
holotype
1974-03-01
ROMIZ
V Gosnold Station
26
27.858334
Off Sebastian Inlet
123
-80.15833
Gosnold Station
48
49
B1126
1
1975-05-02
ROMIZ
F. Stanton
7
27.493334
Nearshore
123
-80.28333
Fort Pierce
48
49
B3980
1
1975-07-10
ROMIZ
F. Stanton
8
27.493334
Nearshore
123
-80.28333
Fort Pierce
48
49
B3981
1