Hexaxonopsis (Hexaxonopsis) serrata (Walter, 1928)

Synonyms: Axonopsis serrata Walter, 1928 (original designation); Axonopsis (Hexaxonopsis) serrata Walter, 1928

Type material: Paratypes: 11 individuals from catalogue number 50058-0785-VIE/430 to 50067-0794-VIE/430 and 50068-0862-VIE/430 deposited at SMF (AQUILA 2022)

Type locality: Tunisia: Oued Djoumine stream, Mateur (Walter 1928) .

Geographical distribution: Southwestern Palaearctic (Gerecke et al. 2016).

Distribution in Portugal: Centre: Beira Alta (Valdecasas 1988), Côa River, near 10 km to VilarFormoso (Lundblad 1956).

Ecological notes: Freshwater, lentic waters (e.g. pools) and interstitial habitats (Gerecke et al. 2016), as well as at riverine clear water, present in plants Myriophyllum spp. and Juncus spp. (Lundblad 1956) .