Bivalvia | Unionida | Unionoidea | Unionidae | Ambleminae | Quadrulini | Megalonaias

species Megalonaias nickliniana (Lea, 1834): specimens

3 available nominal species synonyms (6 total synonyms)

Recent Taxonomic Opinions

Megalonaias nickliniana — Graf & Cummings (2007), Bogan (2010), Graf & Cummings (2021), Czaja et al. (2023), Cummings et al. (2025), Campbell & Lydeard (2026)
Megalonaias nicklineana [sic] — ITIS (2012)
Megalonaias nervosa — Pfeiffer et al. (2018)

Range

Pánuco, Papaloapán, and the Usumacinta basins, Mexico to Guatemala. (Central America: CA1)

Map of Georeferenced Specimens

specimens map of Megalonaias nickliniana

MUSSELp Specimen Records

Type Specimens

image of lot BMNH_93-2-4-2035
BMNH_93-2-4-2035
flumen Usumacinta, Peten, Guatemala
lectotype
Unio digitatus Morelet, 1851

image of lot USNM_83898
USNM_83898
Canton China? [Central America]
holotype
Unio nicklinianus Lea, 1834

image of lot ZMB_39464
ZMB_39464
Rio de las Salinas, Guatemala
holotype
Unio stolli Martens, 1900

image of lot USNM_83898B
USNM_83898B
Moctezuma River
topotypes
Unio nicklinianus Lea, 1834

Other Specimens by Country | show by collection

13 Specimens from Guatemala

image of lot UF_507902
UF_507902
Rio De La Pasion, 5.5 miles east of Sayaxche, El Peten Department, Guatemala 16.536339, -90.103900

image of lot USNM_783054
USNM_783054
Rio de la Pasion, Guatemala

image of lot USNM_783053
USNM_783053
Rio de la Pasion, Guatemala

image of lot USNM_783064
USNM_783064
Rio de la Pasion, Guatemala

image of lot USNM_783056
USNM_783056
Rio de la Pasion, Guatemala

image of lot AMNH_140574
AMNH_140574
Rio de la Pasion, Peten, Guatemala

image of lot OSUM_18867
OSUM_18867
Rio de la Pasion, Peten, Guatemala

image of lot OSUM_18871
OSUM_18871
Rio de la Pasion, Peten, Guatemala

image of lot MCZ_249377
MCZ_249377
Rio de la Pasion, Santa Amelia, Peten, Guatemala

image of lot SMF_15039
SMF_15039
Rio de las Salinas, Guatemala

image of lot SMF_15040
SMF_15040
Rio Usumacinta, Guatemala

image of lot AMNH_140573
AMNH_140573
Santa Amelia, Peten, Guatemala

image of lot MCZ_293587
MCZ_293587
Usumacinta River, Yaxchilan, 106 mi downstream from Sayache, Mexico

1 Specimens from Honduras

image of lot MCZ_30507
MCZ_30507
A check of the on-line catalogue (20 December 2019) show no data for this specimen. The locality “Honduras” comes from the label. Dubious record.

11 Specimens from Mexico

image of lot MCZ_52398
MCZ_52398
Mexico

image of lot AMNH_31226
AMNH_31226
Mexico

image of lot AMNH_30721
AMNH_30721
Mexico

image of lot AMNH_30750
AMNH_30750
Mexico

image of lot AMNH_31227
AMNH_31227
Mexico

image of lot OSUM_58285
OSUM_58285
Mexico

image of lot AMS_102109
AMS_102109
small river, 3 mi SE Emiliano Zapata, Tabasco, Mexico

image of lot MCZ_288413
MCZ_288413
small river, 3 mi SE Emiliano Zapata, Tabasco, Mexico

image of lot MNHN_MP_1299
MNHN_MP_1299
Tampico

image of lot MCZ_5135
MCZ_5135
Tampico, Mexico

COMA_B.0717. Río Pánuco, Veracruz, México

1 Specimens from Nicaragua

image of lot FMNH_50540
FMNH_50540
Nicaragua

1 Specimens from unknown

image of lot BMNH_1964367
BMNH_1964367
China [no - Central America]

GenBank Vouchers

There are no georeferenced GenBank vouchers for this species in the MUSSELpdb.