Cosmocomoidea brachyurus (Ogloblin, 1938)

Lymaenon brachyurus Ogloblin, 1938: 32 –35. Type locality: Argentina, Buenos Aires, Tigre. Gonatocerus (Gonatocerus) brachyurus: De Santis, 1967: 103 (catalog).

Gonatocerus brachyurus: Yoshimoto, 1990: 39 (list); Luft Albarracin et al., 2009: 9 (list, distribution in Argentina). Lymaenon brachyurus: Loiácono et al., 2005: 13 (type information).

Cosmocomoidea brachyura: Huber, 2015: 18, 74.

The compound word most likely means “short tail” and is a noun in apposition, not an adjective (“short-tailed”), so it does not change case even though it was transferred from a masculine genus ( Gonatocerus Nees ab Esenbeck) to a feminine genus.