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Name

Cook, D.G. (1974). The systematics and distribution of marine Tubificidae (Annelida: Oligochaeta) in the Bahia de San Quintin, Baja California, with descriptions of five new species. Bulletin Southern California Academy of Sciences. 73(3):126-140.

SourceID

278368

Authors

Cook, D.G.

Year

1974

Title

The systematics and distribution of marine Tubificidae (Annelida: Oligochaeta) in the Bahia de San Quintin, Baja California, with descriptions of five new species

Journal

Bulletin Southern California Academy of Sciences

Suffix

73(3):126-140

Type

Publication

Link

https://www.biodiversitylibrary.org/page/34305150

Full text

Available for editors

[request]

Abstract

Marine Tubificidae (Annelida, Oligochaeta) from Bahia de San Quintin, Baja California, are described, and their distribution in the bay noted relative to the mean particle size of the sediments. Tubifex postcapillatus, n. sp. is characterized by its simple-pointed dorsal setae, and short hair setae which occur in postclitellar segments only. The setal pattern and details of the genital anatomy distinguish Thalassodrilus belli, n. sp. from other members of its genus. Both of these species are associated with the finest sediments which are located mainly at the north end of the bay. Limnodriloides monothecus, n. sp. with its single, mid-dorsal spermatheca unique to this genus, occurs mainly in silts and very fine sands (4 to 5 ø). Limnodriloides verrucosus, n. sp. possesses a papillate body wall previously unknown in the genus, but reminiscent of the Peloscolex condition; it occurs in all sediment types in the bay (3 to 8 ø) but is most abundant in the 5 to 6 ø range. The dominant oligochaete. Limnodriloides barnardi, n. sp., closely resembles Limnodriloides winckelmanni Michaelsen, especially in its possession of elongate, grooved spermathecal setae enclosed in vacuolated sacs; the species are distinguished by details of their penial structures. Limnodriloides barnardi. n. sp. occurs in all sediment classes but its optimum range appears to be in 4 to 6 ø sediments.

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Date

action

2017-06-06 17:37:10Z

created

van Haaren, Ton

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Limnodriloides Pierantoni, 1903 (identification resource)
Limnodriloides barnardi Cook, 1974 (original description)
Limnodriloides monothecus Cook, 1974 (original description)
Limnodriloides verrucosus Cook, 1974 accepted as Tectidrilus verrucosus (Cook, 1974) (original description)
Thalassodrilus Brinkhurst, 1963 (additional source)
Thalassodrilus belli Cook, 1974 accepted as Thalassodrilides belli (Cook, 1974) (original description)
Tubifex postcapillatus Cook, 1974 accepted as Tubificoides postcapillatus (Cook, 1974) (original description)

Holotype USNM 45283, geounit San Quintin Bay, identified as Limnodriloides verrucosus Cook, 1974
Holotype USNM 45285, geounit San Quintin Bay, identified as Limnodriloides monothecus Cook, 1974
Holotype USNM 45287, geounit San Quintin Bay, identified as Thalassodrilus belli Cook, 1974
Holotype USNM 45289, geounit San Quintin Bay, identified as Tubifex postcapillatus Cook, 1974
Holotype USNM 48730, geounit San Quintin Bay, identified as Limnodriloides barnardi Cook, 1974

Depth range

for Thalassodrilus belli Cook, 1974

originally described from shallow parts (< 2 m depth) [details]

Etymology

for Limnodriloides barnardi Cook, 1974

Named for J. Laurens Barnard (Smithsonian Institution) who led the expedition to Bahia de San Quintin [details]

Etymology

for Limnodriloides monothecus Cook, 1974

'mono'=Gr. óne, single; 'theca' = Gr. and L. 'case, receptacle'; hence 'single spermatheca' [details]

Etymology

for Limnodriloides verrucosus Cook, 1974

verrucosus = L. warty, referring to the layer of papillae on the body wall [details]

Etymology

for Thalassodrilus belli Cook, 1974

The species is named in honor of the late Dr. A.W. Bell, who began to examine part of this collection [details]

Etymology

for Tubifex postcapillatus Cook, 1974

capillatus = (L) long-haired; having hair; hence species has hair setae posteriorly [details]

Type locality

for Limnodriloides barnardi Cook, 1974