Cross Keynote Limpet

Diodora quadriradiata

Molluscs
IUCN: Not evaluated

Water temperature18–30 °C
Best monthsJuly and August
How commonRare

Photo credit: (c) Saryu Mae 前朝琉, some rights reserved (CC BY), uploaded by Saryu Mae 前朝琉 · CC BY · iNaturalist

About this species

Diodora quadriradiata is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets.

Text from the Wikipedia article “Diodora quadriradiata”, 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: 2 records
February: 0 records
March: 3 records
April: 1 records
May: 0 records
June: 3 records
July: 6 records
August: 4 records
September: 2 records
October: 0 records
November: 0 records
December: 2 records

Depth and water temperature

Water temperature

Recorded in surface water of 18–30 °C

18–20 °C: 7 records
20–22 °C: 1 records
22–24 °C: 0 records
24–26 °C: 3 records
26–28 °C: 3 records
28–30 °C: 3 records

Photos

Names and classification

English: Cross Keynote Limpet

Names in 4 more languages

Japanese: テンガイ
Korean: 주름구멍삿갓조개
Thai: หอยงอบสี่สัน
Simplified Chinese: 布紋透孔螺

Other scientific names: Fissurella quadriradiata

Similar species

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).
33 open-data records from 1956 to 2004.
Species data updated November 2, 2026.

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