Ichthydium diacanthum Balsamo & Todaro, 1995

Kånneby, Tobias, Todaro, Antonio & Jondelius, Ulf, 2009, One new species and records of Ichthydium Ehrenberg, 1830 (Gastrotricha: Chaetonotida) from Sweden with a key to the genus, Zootaxa 2278, pp. 26-46 : 31

Ichthydium diacanthum Balsamo & Todaro, 1995

( Figures 8A, B ; Table 2)

Localities: Bog close to E14, Jämtland, Sweden (63º21.248’N; 12º35.403’E).

Material: 1 specimen.

Remarks: The Swedish specimen of I. diacanthum agrees well with the morphometric data given by Balsamo & Todaro (1995). This species is characterized by a fine pattern of cuticular microsculptures which gives the cuticle a granulated appearance. PhIJ at U29; ASB at U22; PSB at U75.

Associated gastrotrich fauna: Chaetonotus oculifer and Ichthydium skandicum n. sp.

Figures

FIGURE 8. A – H) Incertae sedis continued. A) Ichthydium diacanthum dorsal and B) ventral view. C) I. plicatum dorsal and D) ventral view. E) I. squamigerum dorsal view and F) bi-keeled scales anchoring posterior sensory bristles. G) I. squamigerum ventral view. H) I. tergestinum dorsal view. A, B, original; C, D, modified from Balsamo & Fregni (1995); F, after Balsamo & Fregni (1995); E, G, original; H, modified from Grünspan (1908). Scale bars: 20 µm.