Identification Key for Oncaeidae


R. Böttger-Schnack and D. Schnack

(Last Revision: 11.07.2023)



Usage of the Identification Key requires registration first.

If you are not registered yet, please go to Registration


Registered Users

Please select one of the following options:

(vers. 3.0 is the most recent one)

OncIdent (vers. 2.0)

1. Standard access (independent of own browser)

    (not applicable any more with most recent Java versions)

Please download the following small client program:

           OncIdent Starter.exe (for Windows-systems only)

           OncIdent Starter.jar (for all systems)


When placed on your computer, a double click on the "OncIdent Starter" provides a menu to start two versions of the Identification key:

             Oncaeidae of the World Ocean (OncIdent2.0)

             Oncaeidae of the Mediterranean Sea (OncIdent2.0MedSea)

The About Key / Help - button leads to a detailed explanation of the respective key version.

The Start Key - button leads directly to the key window.

2. Alternative access (using own browser)

Starts a browser version of the key (with slightly restricted functionality) from this page:

Please, click on one of the following key versions:

       Oncaeidae of the World Ocean

       Oncaeidae of the Mediterranean Sea


OncIdent (vers. 3.0)

This is the most recent version of the OncIdent key, based on the Programme "Lucid 4.0".

It is built as a browser version (opens in your own browser); the user interphase has been changed, using simplified symbols; the difference function has  been improved, allowing to select individual taxa for comparison.

The key includes all identifyable oncaeid species of the World Ocean, but is restricted to females.

Some regional keys can be selected from available subsets in the world key.

To open the key please click on the following link:

Oncaeidae of the World Ocean