Erenna

Pugh, P. R. & Haddock, S. H. D., 2016, A description of two new species of the genus Erenna (Siphonophora: Physonectae: Erennidae), with notes on recently collected specimens of other Erenna species, Zootaxa 4189 (3), pp. 401-446: 444

publication ID

http://doi.org/10.11646/zootaxa.4189.3.1

publication LSID

lsid:zoobank.org:pub:0F0EE4C3-05B9-4248-944D-B41DC8361CB2

persistent identifier

http://treatment.plazi.org/id/D277A579-4C0A-2969-FF68-8D87F7F7E519

treatment provided by

Plazi

scientific name

Erenna
status

 

Key to Erenna   species based on their Type A bracts

1 Largest bracts> 35 mm in length......................................................................... 2

- Largest bracts <35 mm in length......................................................................... 3

2 Mature bracts with complete transverse ridge between proximal pair of cusps; elongate patch of cells, including nematocysts, distally........................................................................ Erenna cornuta Pugh, 2001  

- Bracts without transverse ridge between proximal pair of distinctly asymmetrical cusps; large squarish distal patch of cells................................................................................... Erenna insidiator   sp. nov.

3 Bracts with one of proximal cusps forming a distinct flap............................... Erenna laciniata Pugh, 2001  

- Bracts without distinct flap formed by one of proximal cusps.................................................. 4

4 Bracts relatively narrow. Proximal pair of cusps symmetrical, 13–14 mm from proximal end of bract.................................................................................................. Erenna richardi Bedot, 1904  

- Bracts relatively broad. Proximal pair of cusps distinctly asymmetrical......................... Erenna sirena   sp. nov.