Malmgreniella liei Pettibone 1993

Malmgreniella liei

Malmgrenia lunulata.—Banse et al., 1968:525 [part].—Lie, 1968:295, 370, 371 [part], [Not Delle Chiaje, 1830.]

MATERIAL EXAMINED.—EASTERN PACIFIC OCEAN: Washington: Puget Sound, Bainbridge Island, off Port Madison, 47°44′N, 122°32′W, 10–18 m, fine sand mixed with silt, sta 4, haul 10, 9 Jan 1963, U. Lie, collector, holotype (USNM 36446) and 2 paratypes (USNM 55058) (as M. lunulata form D by Banse et al., 1968).

DESCRIPTION.—Holotype, male with sperm, 10 mm long, 4 mm wide including setae, and 37 segments. Paratypes consisting of fragments of 2 anterior and one posterior ends. Body flattened, tapering slightly anteriorly and posteriorly, without color. Elytra 15 pairs, on usual segments, subreniform, delicate, opaque, denser around region of attachment, with group of microtubercles on anterior part of some elytra, absent on first and posterior elytra (Figure 43G).

Bilobed prostomium with anterior lobes wide, subtriangular, with distinct peaks; eyes not visible; ceratophore of median antenna large, bulbous, in anterior notch, with papillate style shorter than prostomium; ceratophores of lateral antennae inserted ventrally, converging midventrally, with papillate styles half as long as median antenna; palps stout, tapered; tentaculophores lateral to prostomium, each with 1–2 setae on inner side; tentacular cirri similar to and slightly longer than median antenna (Figure 43A). Segment 2 with first pair of large elytrophores, biramous parapodia, and long ventral buccal cirri similar to tentacular cirri (Figure 43A,B). Setae similar to those of following parapodia.

Biramous parapodia with notopodium shorter, rounded, with projecting acicular lobe on lower side; longer neuropodium with subconical presetal acicular lobe continuous with tapering supraacicular process and shorter rounded postsetal lobe (Figure 43B–D). Notosetae numerous, forming radiating bundle, slightly stouter than neurosetae, clear, with faint double row of spines along one side and blunt tapered tip (Figure 43E). Neurosetae numerous, forming fan-shape bundle, each with bifid split tip, upper ones with slightly longer spinose region and more prominent spines, lower ones with less prominent spines, appearing smooth (Figure 43F). Dorsal cirri with cirrophores stout, cylindrical, with papillate styles tapering distally and extending to tips of neurosetae or slightly beyond; dorsal tubercles nodular, ventral cirri short, subulate, papillate (Figure 43D).

ETYMOLOGY.—The species is named for Ulf Lie, who collected the specimens as a part of his detailed study on the benthic infauna in Puget Sound.

DISTRIBUTION.—Eastern Pacific Ocean, from Washington, Puget Sound, in 10–18 meters.