Hagen & Kapp, 1986

Description
Hooks: 17-18; anterior teeth: 6-8; posterior teeth: 0-1.
Maximum adult body length: 13 mm; tail: 56 %.
Body firm opaque; transversal musculature on trunk and tail; head wide; hooks not serrated. Fin bridge absent; one pair of medium length lateral fins both on trunk and tail; lateral fins partially rayed, very few fin rays, rounded. Collarette absent; gut diverticula absent; eyes absent. Seminal vesicles conical; position of seminal vesicles: touching posterior fins separated from tail fin. Ovaries very short; ova fairly small. Adhesive papillae and adhesive organs absent. Vestibular organs small with one row of papillae; apical gland cell complex present; neck canals absent.

Distribution: bathypelagic.

Remarks: 1 specimen found between 1000 and 2350 m in the Antarctic Ocean (Atlantic sector).

Type locality: 60°49.2'S, 55°11.4'W.

Phylum Chaetognatha
Order Aphragmophora
Family Heterokrohniidae
Genus Heterokrohnia
Species longicaudata

Status in World Register of Marine Species

Synonym of Archeterokrohnia longicaudata (Hagen & Kapp, 1986)

Sorry, there are no scientific synonyms and common names available for this species

Hagen, W. & H. Kapp, 1986. Heterokrohnia longicaudata, a new species of Chaetognatha from Antarctic waters. Polar Biologie, 5: 181-183.

Kapp, H., 1991. Archeterokrohnia Casanova, 1986, a junior synonym of Heterokrohnia Ritter-Zahony, 1911 (Chaetognatha), with a review of the species of Heterokrohnia. Helgolander Meeresuntersuchingen, 45: 237-252.

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