Hydrometra costae Herrich-Schaeffer, 1850: 71. ST(S): Germany.
Gerris (Limnotrechus) lateralis var. costae ab. derubra Puschnig, 1925: 92. STS: male, female, Austria, Kärnten.
Gerris costai Wagner & Zimmermann, 1955: 184. Incorrect spelling.
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