taxonID	type	description	language	source
5F3698E9047E5802A1487623678DD54C.taxon	description	Fig. 2	en	Marle, Pierre, Stoffel, Céline, Renahy, Simon (2026): First record of the Ponto-Caspian amphipod Chaetogammarus trichiatus (Martynov, 1932) (= Echinogammarus trichiatus) (Crustacea, Gammaridae) in Lake Geneva. Alpine Entomology 10: 163-168, DOI: 10.3897/alpento.10.207817
5F3698E9047E5802A1487623678DD54C.taxon	materials_examined	Material examined. GBIFCH 00967050 & GBIFCH 00967051, 2 specimens, France, Lake Geneva, Evian-les-Bains, 46.40098197 ° N, 6.583298966 ° E, 372 m, 12. 08. 2024, exoskeleton well preserved, soft tissues used for COI gene sequencing, leg. S. Renahy.	en	Marle, Pierre, Stoffel, Céline, Renahy, Simon (2026): First record of the Ponto-Caspian amphipod Chaetogammarus trichiatus (Martynov, 1932) (= Echinogammarus trichiatus) (Crustacea, Gammaridae) in Lake Geneva. Alpine Entomology 10: 163-168, DOI: 10.3897/alpento.10.207817
5F3698E9047E5802A1487623678DD54C.taxon	discussion	Chaetogammarus can easily be distinguished from Gammarus and Dikerogammarus by the morphology of the third uropod and the first and second urosome segments. In the genus Dikerogammarus and Chaetogammarus, the inner ramus of the third uropod is very short (Fig. 2 B), whereas it is well developed in Gammarus. Furthermore, Chaetogammarus and Gammarus lack the paired dorsal protuberances bearing spines on the first and second urosome segments (Fig. 2 A), a characteristic feature of Dikerogammarus species. Compared with C. ischnus, C. trichiatus is characterized by a third uropod densely covered with recurved setae (Fig. 2 B). In females of C. trichiatus, these recurved setae are at least densely developed at the apex of the third uropod.	en	Marle, Pierre, Stoffel, Céline, Renahy, Simon (2026): First record of the Ponto-Caspian amphipod Chaetogammarus trichiatus (Martynov, 1932) (= Echinogammarus trichiatus) (Crustacea, Gammaridae) in Lake Geneva. Alpine Entomology 10: 163-168, DOI: 10.3897/alpento.10.207817
