Themiste (Lagenopsis) minor minor (Ikeda)

Hsueh, Pan-Wen & Kuo, Chia-Ming, 2009, New records of sipunculan worms from Taiwan, Zootaxa 2067, pp. 51-61 : 57-58

publication ID

https://doi.org/ 10.5281/zenodo.187023

DOI

https://doi.org/10.5281/zenodo.5671993

persistent identifier

https://treatment.plazi.org/id/3B3687EB-BF10-D15C-FF35-F9E3189D5D06

treatment provided by

Plazi

scientific name

Themiste (Lagenopsis) minor minor (Ikeda)
status

 

Themiste (Lagenopsis) minor minor (Ikeda)

Figs. 2 View FIGURE 2. A G, 3 B

Dendrostoma minor Ikeda, 1904: 154 .

Themiste minor minor Cutler, 1994: 154 (for complete synonymy).

Material examined. One specimen (NMNS- 5928 -009), Shihmen (25 ° 17.84 ' N, 121 ° 34.23 ' E), Taipei County, northwestern Taiwan, lower intertidal sediment rocks, coll. P.-W. Hsueh, 4 November 2007; 11 specimens (NMNS- 5928 -010), Shihmen (25 ° 17.84 ' N, 121 ° 34.23 ' E), Taipei County, northwestern Taiwan, lower intertidal sediment rocks, coll. P.-W. Hsueh, 9 May 2008; 45 specimens (NMNS- 5928 -011), Shihmen (25 ° 17.84 ' N, 121 ° 34.23 ' E), Taipei County, northwestern Taiwan, lower intertidal sediment rocks, coll. P.-W. Hsueh, 10 May 2008.

Remarks. Themiste minor Ikeda and T. variospinosa Edmonds are the only two species in the subgenus Themiste ( Lagenopsis ) that have introvert hooks. The former species differs from the latter by the presence of posteriorly oriented hooks, and introvert hooks of the other species are orientated in all directions ( Cutler & Cutler 1988: 746, fig. 3 A, C; present study, Fig. 3 View FIGURE 3. A B). Cutler and Cutler (1988) divided T. minor into two subspecies T. minor minor and T. minor huttonii (Benham) , with the latter having a relatively longer body length (trunk length reaching 55 mm vs. <20 mm), as well as more hooks and a longer hook-bearing region on the introvert (55–75 % vs. 25–35 %). Themiste minor huttonii is known only from Australia, New Zealand and the Chatham Islands in South Pacific Ocean, whereas T. minor minor ranges from across Japan, China, South Australia and southern Africa. Cutler and Cutler (1988) suggested that T. minor minor is a cooltemperate, intertidal and shallow subtidal form but our records show that it also occurs in subtropical waters.

Kingdom

Animalia

Phylum

Sipuncula

Class

Sipunculidea

Order

Golfingiiformes

Family

Themistidae

Genus

Themiste

Loc

Themiste (Lagenopsis) minor minor (Ikeda)

Hsueh, Pan-Wen & Kuo, Chia-Ming 2009
2009
Loc

Themiste minor minor

Cutler 1994: 154
1994
Loc

Dendrostoma minor

Ikeda 1904: 154
1904