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: 442

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/D277A579-4C08-296B-FF68-8884F7F7E1E1

treatment provided by

Plazi

scientific name

Erenna
status

 

Key to Erenna   species based on their nectophores.

1 Long "horn" canals arising from lateral radial canals; thrust block without median indentation.. Erenna cornuta Pugh, 2001  

- No "horn" canals. Thrust block with median indentation...................................................... 2  

2 Mature nectophores with digitate processes on thrust block.................................................... 3

- Mature nectophores without digitate processes on thrust block................................................. 4

3 Upper lateral ridges divide close to ostium. Incomplete lateral ridges present............... Erenna richardi Bedot, 1904  

- Upper lateral ridges undivided. No lateral ridges........................................... Erenna sirena   sp. nov.  

4 Upper lateral ridges divide close to ostium forming broad "m"-shaped branches. Thrust block consisting of one pair of lobes............................................................................... Erenna laciniata Pugh, 2001  

- Upper lateral ridges undivided. Thrust block with two pairs of lobes........................ Erenna insidiator   sp. nov.