Echinoderes kozloffi Higgins, 1977

Sørensen, Martin V., Goetz, Freya E., Herranz, María, Chang, Cheon Young, Chatterjee, Tapas, Durucan, Furkan, Neves, Ricardo C., Yildiz, N. Özlem, Norenburg, Jon & Yamasaki, Hiroshi, 2020, Description, redescription and revision of sixteen putatively closely related species of Echinoderes (Kinorhyncha: Cyclorhagida), with the proposition of a new species group - the Echinoderes dujardinii group, European Journal of Taxonomy 730, pp. 1-101 : 28-30

Echinoderes kozloffi Higgins, 1977

Fig. 8B, E, H

Material examined

Holotype

WASHINGTON STATE • 1 ♂; San Juan Island , North Bay , Argyle Lagoon ; 48°31′ N, 123°01′ W; 1 m b.s.l.; 9 Aug. 1975; E. Kozloff leg.; muddy sand gravel, rich in organic matter; USNM-53337 . Specimen mounted for LM.

Paratypes

WASHINGTON STATE • 4 ♀♀, 1 ♂; same collection data as for holotype; USNM-53339 . Specimen mounted for LM .

The description by Higgins (1977a) does not state clearly from which habitat the type material was collected, but sampling was done by E. Kozloff who probably collected the species from muddy sand gravel, rich in organic matter ( Kozloff 1972).

Additional material

CANADA – British Columbia • 2 ♀♀, 1 ♂; Vancouver Island, Clover Point ; 48°24′14″ N, 123°21′04″ W; 0 m b.s.l.; May 2015; M. Herranz leg.; intertidal brown algae (see Herranz & Leander 2016); NHMD- 100304 to 100305 and NHMD-616637 • 1 ♀; Archaeology Beach ; 51°39′52″ N, 128°05′50″ W; 0 m b.s.l.; July 2015; M. Herranz leg.; intertidal brown algae (see Herranz & Leander 2016); NHMD-100306 .

All specimens mounted for LM. Numerous additional specimens from the same localities, mounted for LM and SEM, are stored in Herranz’ personal reference collection. See Table 1 for an overview.

Description

The species was recently redescribed by Herranz & Leander (2016), and the specimens follow this rather accurate description. The only details that should be added regard the intracuticular substructures related to the female papillae on segments 6 to 8, and middorsal spine length. Female papillae are present in ventrolateral positions on segments 6 and 7 ( Fig. 8E ), and they have a short, somewhat rhomboid intracuticular tube leading to the rounded outlet. Female papillae on segment 8 are ventromedial ( Fig. 8E ), and the intracuticular substructures are crescentic with a small protuberance in the curved part of the structure. Middorsal spine of segment 8 extends well onto segment 9, but never reaches posterior margin of segment ( Fig. 8B ). It was furthermore confirmed that laterodorsal glandular cell outlets type 2 are present on segment 8 only ( Fig. 8B ).

Figures

Fig. 8. Comparative light micrographs showing selected details of E. pacificus Schmidt, 1974. A. Holotype, ♀ (USNM-53335). D–G. Paratype (USNM-53336). B, E, H. E. kozloffi Higgins, 1977. Holotype, ♀ (USNM-53337). C, F, I. E. sublicarum Higgins, 1977. Paratype, ♀ (USNM-54399). A–C. Segments 8 to 9, dorsal view, showing presence of glandular cell outlets type 2 on segment 8. D–F. Segments 6 to 8, ventral view, position and appearance of sexually dimorphic female papillae. G–I. Segments 10 to 11, with midlateral tubes on segment 10, and lateral terminal spines.