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Species:
Ascomorpha minima Hofsten, 1910
Valid Name:
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Parent taxa:             Genus / Family / Order / Superorder / Subclass / Class
Ascomorpha: Gastropodidae: Ploima: Pseudotrocha: Monogononta: Eurotatoria
Taxonomic / nomenclatural notes:
The trophi of A. minima are only insufficiently described and no figure seems to have previously been published. According to Von Hofsten (1910) [Ref.15745] trophi resemble that of "A. ecaudis or A. saltans", but lateral hooks are supposedly present on the fulcrum. Such structures, possibly referring to basal apophyses (not yet known in genus Ascomorpha), can not be seen in preparation ANSP 1057 (cf. specimen images by Jersabek et al. (2003) [Ref.15798]). The identity of A. cf. minima after Carlin (1943) [Ref.17082] (not illustrated) requires clarification. It is larger (80 µm) than what has been described by Von Hofsten (43-51 µm) and contains 4 dark defecation reservoirs (not mentioned by Von Hofsten), and lateral hooks are missing on the fulcrum.
Nomenclatural status:
name in current use
Species group name declinable:
yes
Validity:
valid
Taxon Rank:
Species
Availability:
available
Original Combination:
Ascomorpha minima
Original Spelling:
Ascomorpha minima
Latest Revision:
Radwan, S ;I Bielanska-Grajner (2002): Rotifera. Volume 6: Asplanchnidae, Gastropodidae, Lindiidae, Microcodidae, Synchaetidae, Trochosphaeridae and Filinia. Vol. 18: 28-54
Page last modified on: 28.04.2021 by C.D. Jersabek
Original description
 
Von Hofsten, N (1910): Arkiv för Zoologi 6
p.88, fig.22
Von Hofsten, N (1910): Arkiv för Zoologi 6 p.88, fig.22
Literature documentations
 
Sládeček, V (1961): Hydrobiologia 18
Sládeček, V (1961): Hydrobiologia 18
Observation images
 
Image courtesy of ANSP (Jersabek et al. 2003) [Ref.15798]; trophi, ventral view
 Image courtesy of ANSP (Jersabek et al. 2003) <a href='../../Reference/Index/15798' target='_blank'>[Ref.15798]</a>; trophi, ventral view
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Carlin, B, 1943 Meddelanden Lunds Universitets Limnologiska Institution5Ascomorpha minima Hofsten, 1910
Jersabek, C D;H Segers;B J Dingmann, 2003 The Academy of Natural Sciences of Philadelphia, Special Publications20Ascomorpha minima Hofsten, 1910
Sládeček, V, 1961 Hydrobiologia18 
Von Hofsten, N, 1910 Arkiv för Zoologi6
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cf. - / -01.01.1900Literature / - / Published Information1024
L
cf. Open water / Lake, freshwater (mesotrophic)15.06.2018CJ unpubl. / - / Unpublished Information, own observations (CJ)1
sensu Carlin (1943)
F
  - / Pond, freshwater03.09.1936Collection / - / Specimen preparations2048
C
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ANSP 1057 Ascomorpha minima Hofsten, 1910
Orig.Id.: Ascomorpha minima Hofsten, 1909
 trophi1 
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Geographical Range:
 
Macrohabitat:
Lake, freshwater (mesotrophic); Pond, freshwater; River, freshwater;
Microhabitat:
Open water;
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Nearctis- n.s. -- n.s. -- n.s. -- n.s. -- n.s. -
NearctisNA4 AlleghanyNorth AmericaUnited States of AmericaNew JerseyCumberland Co.
Palaearctis- n.s. -- n.s. -- n.s. -- n.s. -- n.s. -
PalaearctisP1 EuropeanEuropeAustriaSalzburgFlachgau
PalaearctisP1 EuropeanEuropeSwedenÖstergötlandsÖstergötlands län
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