Re-evaluation of the genus Biapertura Smirnov, 1971 (Cladocera: Anomopoda Chydoridae)
Author
Sinev, Artem Y.
text
Zootaxa
2020
2020-11-26
4885
3
301
335
journal article
9373
10.11646/zootaxa.4885.3.1
de7c4264-09b0-4361-a7cb-04f80e6ddbe2
1175-5326
4296625
784B14D1-7B68-42F1-81A1-9EAB8DFD7E79
Key for identification of
Biapertura
species of the world
1. Thoracic limb I with IDL seta 1 thin, straight, not claw–like, about half length of seta 2...................................................................................................
Biapertura lepida
(
Birge, 1892
)
(
USA
).
- Thoracic limb I with IDL seta 1 thick, strongly curved, claw–like, of similar length with seta 2........................ 2
2. Posteroventral angle of valves with denticles.......................................................................................
Biapertura sibirica
(
Sinev, Karabanov & Kotov, 2020
)
(North Europe, North and Central Asia).
- Posteroventral angle of valves without denticles............................................................. 3
3. Postabdomen of female evenly narrowing distally in postanal portion............................................ 4
- Postabdomen of female with parallel margins in basal half of postanal portion..................................... 5
4. Spine on basal segment of antennal exopodite as long or longer than middle segment............................................................................................
Biapertura elliptica
(
Sinev, 1997
)
(East
Australia
).
- Spine on basal segment of antennal exopodite much shorter than middle segment...............................................................................................
Biapertura martensi
(Sinev, 2007)
(
South Africa
).
5. PP in adult females is over 2.5 IP..................................
Biapertura kendallensis
(
Henry, 1919
) (
Australia
)
- PP in adult females about not exceeding 2 IP................................................................6.
6. Postabdomen of adult male with right, clearly defined distoventral angle.....................................................................................................
Biapertura affinis
(
Leydig, 1860
)
(Eurasia, Africa).
- Postabdomen of adult male with rounded distoventral angle.....
Biapertura ossiani
(
Sinev, 1998
)
(North and South America,
South Korea
), two subspecies............................................................................ 7
7. Postabdomen of adult male without any marginal denticles.............
Biapertura ossiani ossiani
(
Sinev, 1998
) (
Brazil
)
.
- Postabdomen of adult male with 1–3 marginal denticles at postanal angle......................................................................................
Biapertura ossiani herricki
Sinev, 2013
(
USA
,
Canada
,
South Korea
).