Alona costata

Sousa, Francisco Diogo R., Santos, Sandro, Güntzel, Adriana Maria, Diniz, Leidiane Pereira, Júnior, Mauro De Melo & Elmoor-Loure, 2015, Description of a new species of the costata - group (Cladocera, Chydoridae, Aloninae) from Brazil, Zootaxa 4040 (4), pp. 445-457: 453

publication ID

http://dx.doi.org/10.11646/zootaxa.4040.4.4

publication LSID

lsid:zoobank.org:pub:E338036A-B542-46EB-9F49-B2DB183CCF46

persistent identifier

http://treatment.plazi.org/id/ED6B6B7F-4D3F-FFAB-FF7D-FA32FFA9F89D

treatment provided by

Plazi

scientific name

Alona costata
status

 

Key to the identification of American species of the costata  -group

1 Distal angle of postabdomen projected and acute, slightly narrowed distally. Lateral head pores long, over 1 / 2 IP................................................................................................ 2 (costata- branch)

- Distal angle of postabdomen rounded and projected, strongly narrowed distally. Lateral head pores short, about 1 / 3 IP............................................................................................ 3 (rustica- branch)

2 Three main head pores........................................................... Alona margipluma  sp. nov.

- Two main head pores.......................................................... Alona cf. setigera Brehm, 1931 

3 Rostrum elongated, labral keel with projections on its upper half........................... Alona bicolor ( Frey, 1965) 

- Rostrum not elongated, labral keel without projections........................................................ 4

4 Middle main head pore at similar distance of anterior and posterior head pore................... Alona rustica Scott, 1895 

- Middle main head pore near to posterior head pore........................................................... 5

5 Second seta on the exopodite of limb V slightly longer than first seta.............. Alona iheringula Kotov & Sinev, 2004 

- Second seta on the exopodite of limb V about two times shorter than first seta................. Alona hudeci Sinev, 1999