MCZ Ichthyology 20766

Astyanax asymmetricus Eigenmann, 1908

Syntype of Astyanax asymmetricus

Date Collected:

1865-09-01/1965-10-31

South America: Brazil: Amazonas | Tabatinga [Rio Solimoes at Tabatinga (aka Sapurara) and environs]

occurrenceID: https://mczbase.mcz.harvard.edu/guid/MCZ:Ich:20766 JSON-LD

Media type: image; Ichthyology 20766 Description: photograph; Aspect: labels

(Media Record) (Related) (Full)

Shows Cataloged Item: MCZ:Ich:20766 Astyanax asymmetricus Syntype Description

Current Identification
Astyanax asymmetricus Eigenmann, 1908
Animalia Chordata Craniata Gnathostomata Osteichthyes Neopterygii Actinopterygii Characiformes Characoidei Characidae
Determiner: Carl H. Eigenmann
Nature of ID: expert ID

Eigenmann 1908, page 94, Syntype of Astyanax asymmetricus Eigenmann, 1908 no catalog numbers noted, but 3 specimens, Tabatinga
Eigenmann 1921, page 238, Voucher of Astyanax asymmetricus Eigenmann, 1908 Type; 1: 51 mm; Tabatinga. Bourget
Ragazzo et al. 2024, page 207, Voucher of Astyanax asymmetricus Eigenmann, 1908 doi: 10.1590/1982-0224-2023-0086 linked data icon
Media type: image; Eigenmann 1908 Description: .pdf publication;

(Media Record) (Related) (File)

Shows Publication: Eigenmann 1908 Description: .pdf publication

Media type: text; Eigenmann 1921 Description: MCZ Memoirs Vol. XLIII Part III;

(Media Record) (Related) (File)

Shows Publication: Eigenmann 1921 Description: MCZ Memoirs Vol. XLIII Part III

  • field number: THAYER133
  • group number: 204

Part Condition Disposition Count
tissue (95% ethanol) good in collection 1 History
Remarks: Muscle; sub-sampled as part of NSF CSBR Holotype grant; transferred to MCZ-CRYO on 2022-10-19
subsampled by = Nina Black   determined date=2022-10-05   determined by=Nina Black  
whole animal (70% ethanol) good in collection 1 History

Attribute Value Determination On
age class adult [no agent data]
associated grant Preserving the genomes of the type specimens in the MCZ (CSBR) By: Nina Black 2022-10-19
standard length 39.6 mm By: Andrew D. Williston, Method: calipers 2019-11-21
total length 46.03 mm By: Andrew D. Williston, Method: calipers 2019-11-21

  • In: Bull Mus Comp Zool,52(6):94. Eig. 1921:238 lists MCZ 20766 as 'type'(=lectotype) but does not des. status of 20763. Eigenmann label in bottle says largest specimen figured (A. Williston 2019)

  • None

  • Continent:
  • South America
  • Country:
  • Brazil
  • State/Province:
  • Amazonas
  • dwc:highergeographyID:
  • http://vocab.getty.edu/tgn/1001826 linked data icon
Specimens with same Higher Geography
Specimens from the same Locality
Specimens from the same Collecting Event
  • Specific Locality:
  • Tabatinga [Rio Solimoes at Tabatinga (aka Sapurara) and environs]
  • Verbatim Locality:
  • TABATINGA [Rio Solimoes at Tabatinga (aka Sapurara) and environs]
  • Habitat Description:
  • [SALINITY: F]
  • Locality Remarks:
  • Coordinates approximate.
  • Georeference:
  • -4.2416666°, -69.741666° (Error radius: 115km) By: [no agent data] on 2010-03-19 (Source: unknown)
  • Datum:
  • unknown
  • Coordinates Entered As:
  • deg. min. sec. (4° 14′ 30″ S  69° 44′ 30″ W)
  • Collecting Source:
  • wild caught
  • Began Date / Ended Date:
  • 1865-09-01 / 1965-10-31
  • Verbatim Date:
  • 0/9/1865-0/10/1865
  • Ich. Field Number:
  • THAYER133
  • Collectors:
  • Thayer Expedition to Brazil; D. Bourget

  • None

Media type: text; Ichthyology 20751; 20752; 20753; 20754; 20755; 20756; 20757; 20758; 20759; 20760; 20761; 20762; 20763; 20764; 20765; 20766; 20767; 20768; 20769; 20770; 20771; 20772; 20773; 20774; 20775 Description: MCZ Ichthyology Fish 018001-024000, pg.111;

(Media Record) (Related) (File)

Ledger Entry for: 25 cataloged items from MCZ:Ich:20751 Bryconops lucidus to MCZ:Ich:2077...

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