Adineta gracilis Janson 1893

Eurytopic.

Certainly often confused with juvenile A. vaga.

The body is nearly 210 µm long, and is narrow. The surface of the whole body is smooth, and the body is colourless or only very slightly roseate. On the rostrum without cilia. The rostrum consists only of the dorsal parts of the rostral sheats, and it is in its whole length inclined towards the ventral side. On the inner side of the cingulum without teeth. Rostrum ventrally bowed, without auricles; no rake apparatus, spine as noted above; animal very slender, agile. The spurs are short, only nearly half of the length of the joint to which they are fixed. This animal is very mobile.

It is a medium-sized rotifer (max 300 µm), transparent to pale grey in colour. The spurs are very short. The eggs are oval and transparent (70 µm by 50 µm).

Australis
Palaearctis
Nearctis
Afrotropis
Orientalis
Antarctis

Non-type voucher specimen for Adineta gracilis Janson, 1893
Catalog number: 1051
Collection: Academy of Natural Sciences of Drexel University, Philadelphia, USA
Prepared by: Bennetch, L M
Sex/stage/structure: females
Preparation: Slide Preparation
Specimen Count: 2

Non-type voucher specimen for Adineta gracilis Janson, 1893
Catalog number: 0404
Collection: Academy of Natural Sciences of Drexel University, Philadelphia, USA
Prepared by: Myers, F J
Sex/stage/structure: females
Preparation: Slide Preparation
Specimen Count: 4