Pycnogonum ungellatum Loman 1911

Pycnogonum ungellatum Loman

Pycnogonum ungellatum Loman, 1911:7–8, pl. 2: figs. 25–27.—Hedgpeth, 1949:304, figs. 48c, 50e–g.—Utinomi, 1971:339 [literature].—Nakamura and Child, 1983:66.

MATERIAL EXAMINED.—Aleutians, off Semisopochnoi Island, 51°53.3′N, 179°45.6′E, 121 m, R/V Lets Go, cruise 861, sta 91, 7 Sep 86 (1, 1 juv).

Aleutians, off Little Tanaga Islands, 51°36.3′N, 176°22.2′W, 274 m, R/V Miller Freeman, cruise 833, sta 87, 12 Aug 83 (1).

Aleutians, off Amchitka Island, 52°03.4′N, 179°25.1′E, 174 m, R/V Halfmoon Bay, cruise 801, sta 70, 29 Jul 80 (2 with eggs, 1, 3, 1 larva).

DISTRIBUTION.—Known from the Sea of Okhotsk, the east side of Sakhalin Island in the Pacific, and localities as far south as Sagami Bay in Japan, with a known depth range of 7 to 419 m. The new records move its known distribution into the western Aleutian Islands, but within the known depth range.

DIAGNOSIS.—A small species with trunk length of only 8.5 to 9.0 mm. Trunk of adult without conspicuous dorsomedian tubercles, present and more conspicuous in juveniles, lateral processes closely crowded, almost touching, without adornment. Proboscis barrel-shaped, tapering distally, only as long as anterior 2 trunk segments. Abdomen short, squared at tip in dorsal view.

Ovigers 9–segmented, very small. Legs moderately short, robust.

MATERIAL EXAMINED.—Aleutians, off Attu Island, 52°32.6′N, 172°57.9′E, 137 m, R/V Lets Go, cruise 861, sta 72, 24 Aug 86(1 larva).

Pycnogonum ungellatum Loman

Pycnogonum ungellatum Loman, 1911:7–8, pl. 2: figs. 25–27.—Hedgpeth, 1949:304, figs. 48c, 50e-g [figures].—Utinomi, 1971:339 [literature].

MATERIAL EXAMINED.—Sagami Bay: Nabeta Bay, 5 Feb 1972 (1 juv). Off Shimoda, 8 Aug 1973 (1).

shelf to upper slope