Lamprophaea pettiboneae, Salazar-Vallejo, 2020

Salazar-Vallejo, Sergio I., 2020, Revision of Leocrates Kinberg, 1866 and Leocratides Ehlers, 1908 (Annelida, Errantia, Hesionidae), Zootaxa 4739 (1), pp. 1-114 : 42-43

publication ID

https://doi.org/ 10.11646/zootaxa.4739.1.1

publication LSID

lsid:zoobank.org:pub:544B9C82-BF33-4EA1-9411-E1A307137466

DOI

https://doi.org/10.5281/zenodo.3680243

persistent identifier

https://treatment.plazi.org/id/2D1987E4-FFCA-7306-FF23-FC78F1386311

treatment provided by

Plazi

scientific name

Lamprophaea pettiboneae
status

sp. nov.

Lamprophaea pettiboneae n. sp.

Fig. 22 View FIGURE 22

urn:lsid:zoobank.org:act:89978CB2-F100-4705-A7DF-D16AECD663CA

Leocrates chinensis: Hartman 1954: 622 View in CoL (Bikini and Eniwetok atolls), 624 (Bikini Island), 625 (outside Bikini Atoll, Lidilbut Island, Eniwetok atoll), 628 (systematic list) (partim, non Kinberg, 1866); Pettibone 1970: 215 (listed specimen; not described nor illustrated) (partim, non Kinberg, 1866).

Type material. Western Pacific. Marshall Islands. Holotype ( USNM 23961 About USNM ), Ralik Chain, Bikini Atoll, Bikini Island , outer reef, 178, VI, 14 Aug. 1947, F.M. Bayer & F.C. Zimmerman, coll.

Description. Holotype (USNM 23961), complete, damaged, bent spirally ( Fig. 22A View FIGURE 22 ); right parapodia of chaetigers 10 (kept in container), and 13 (not found) previously removed. Body obconic, blunt anteriorly, tapered posteriorly, colorless, 42 mm long, 8 mm wide, 16 chaetigers. Anterior and posterior cirri on site, middle body ones missing.

Prostomium wider than long, wider anteriorly. Lateral antennae twisted, 1.5 times longer than prostomium, ceratophores distinct, antennae 1.5 times longer than palps. Palpophores pale, twice longer than palpostyles ( Fig. 22B View FIGURE 22 ). Median antenna without tip, twisted, inserted between posterior eyes.

Eyes brownish, anterior and posterior eyes round, anterior ones twice larger, more distant to each other than posterior ones; in lateral view, eyes separated from each other ( Fig. 22C View FIGURE 22 ).

Nuchal organs lobes L-shaped, pale, almost completely concealed by tentacular belt, leaving anterior portions of lateral branches exposed. Tentacular cirri damaged, twisted, longest ones reaching chaetiger 7 (probably longer but too delicate to be pulled backwards to its limit). Lateral cushions low, most distorted, entire, longitudinal striae barely visible.

Pharynx fully exposed, anterior margin crenulated. Upper and lower jaws single, submarginal, brownish, upper jaw larger than ventral one ( Fig. 22D View FIGURE 22 ).

Dorsal cirri of middle chaetigers missing, relative length to body width unknown. Chaetigers 1–4 without notochaetae; notochaetae present along chaetigers 5–16, about 50 per bundle, in bundles, subdistally denticulate, denticles coarse. Notacicular lobes tapered ( Fig. 22E View FIGURE 22 , inset), shorter than neuracicular ones; neuracicular lobes oblique conical to rectangular, as long as wide ( Fig. 22E View FIGURE 22 ). Neurochaetae about 30 per bundle, blades decreasing in size ventrally, 3–7 times longer than wide, blades bidentate, guard approaching subdistal tooth ( Fig. 22F View FIGURE 22 ).

Posterior region damaged; prepygidial segment with dorsal cirri three times longer than ventral ones. Pygidium distorted by compression, anal cirri without tips, reach chaetiger 13.

Gonads present throughout body. Oocytes not seen, only testis.

Etymology. This species name is after the late Dr. Marian H. Pettibone in recognition of her many publications on polychaetes, and especially because of her revision of Leocrates Kinberg, 1866 , which has been very useful for my efforts in understanding this group. The species-group name is a noun in the genitive case ( ICZN 1999, Art. 31.1.2).

Remarks. Lamprophaea pettiboneae n. sp. belongs in the group of species provided with notochaetae from chaetiger 5. The dorsal pigmentation and the relative size of palpophores to palpostyles separate this species, such that L. pettiboneae resembles L. longicirrata ( Treadwell, 1902) from the Antilles because they are both pale. However, in L. pettiboneae palpophores are twice longer than palpostyles, whereas they are three times longer in L. longicirrata .

Distribution. Only known from the type locality in the Marshall Islands, in shallow coralline substrates.

Kingdom

Animalia

Phylum

Annelida

Class

Polychaeta

Order

Phyllodocida

Family

Hesionidae

Genus

Lamprophaea

Loc

Lamprophaea pettiboneae

Salazar-Vallejo, Sergio I. 2020
2020
Loc

Leocrates chinensis: Hartman 1954: 622

Pettibone, M. H. 1970: 215
Hartman, O. 1954: 622
1954
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