Gammarus desperatus was created in 1981.
Homarus gammarus was created in 1758.
Gammarus roeseli was created in 1835.
Gammarus chevreuxi was created in 1913.
Gammarus acherondytes was created in 1940.
Gammarus lacustris was created in 1863.
Gammarus bousfieldi was created in 1961.
Gammarus pulex was created in 1758.
Gammarus setosus was created in 1931.
Gammarus pecos was created in 1970.
Gammarus hyalelloides was created in 1976.
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Gammarus lacustris is so named because it is a species of Gammarus that is more or less confined to lakes. Lacustris, from the Latin, means of the lake and is used in the latin name of other lake dwelling organisms.