Wedge Shell

About this species

Macomona liliana, or the large wedge shell, is a bivalve mollusc of the family Tellinidae. It is endemic to New Zealand.

Text from the Wikipedia article “Macomona liliana”, licensed CC BY-SA 4.0. Read the article

Where and when

Where it has been recorded

Worldwide

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Best months

Worldwide (open data)

January: 39 records
February: 34 records
March: 46 records
April: 51 records
May: 31 records
June: 27 records
July: 24 records
August: 27 records
September: 45 records
October: 40 records
November: 82 records
December: 49 records

Depth and water temperature

Depth

Mostly recorded at 0–3 m · Deepest record: 40 m

0–10 m: 54 records
10–20 m: 0 records
20–30 m: 0 records
30–40 m: 0 records
40–50 m: 1 records

Water temperature

Recorded in surface water of 12–18 °C

10–12 °C: 6 records
12–14 °C: 10 records
14–16 °C: 11 records
16–18 °C: 101 records

Photos

(c) wild_wind, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Lisa Bennett, some rights reserved (CC BY) · CC BY · iNaturalist
(c) wild_wind, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Saryu Mae 前朝琉, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Javier, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Javier, some rights reserved (CC BY) · CC BY · iNaturalist
(c) Saryu Mae 前朝琉, some rights reserved (CC BY) · CC BY · iNaturalist

Names and classification

English: Wedge Shell

Other scientific names: Tellina lactea, Tellina liliana

Similar species

Triangular Tellin
Macomona deltoidalis
Baltic macoma
Macoma balthica
Fine-ridged Tellen
Semelangulus tenuiliratus
Bartschicoma edgari
Angled wedge shell
Bartschicoma gaimardi
Dallitellina rostrata

Sources and credits

Names and taxonomy: WoRMS (CC BY 4.0) and the GBIF Backbone (CC BY 4.0). Photos: iNaturalist observers, each under the licence shown (CC0, CC BY or CC BY-SA).

Depth, temperature, months and maps: records from OBIS and GBIF under CC0 or CC BY.
Descriptions: Wikipedia, licensed CC BY-SA, each linked to its article.
Conservation status as published by GBIF (IUCN Red List).
514 open-data records from 1918 to 2021.
Species data updated November 4, 2026.