Hyadina agostinhoi Frey, 1945

Hyadina agostinhoi Frey, 1945 View in CoL

Hydrina agostinhoi Frey 1945: 84-85 ; type-locality: “Mig.: Pico do Castanheiro ”, “ Lagoa Canario ”, “ Pico da Vara ”, “ Pico : Lagoa do Caiado ”, “ Fayal : Caldeira ”, “ Flores: Santa Cruz, oberhalb des Meeresufers ”; ST 3♀ [MZH, Mathis & Zatwarnicki 1995].

Hydrina agostinhoi var. pseudopelina Frey 1945: 85 View in CoL ; type-locality: “Flor.: Ribeira Fazenda”; HT 3/ ♀ [MZH, Mathis & Zatwarnicki 1995] – synonymy by Cogan (1984).

Diagnosis. Belongs to the species with (i) only inner vertical seta and (ii) scutellum velvet black laterally. Can be distinguished from the other three European species of this group by the almost completely black legs. Terminalia not illustrated to date. No material examined by the author.

Distribution. So far only known from the type series from the Azores ( Flores Island, Faial, Pico Island, São Miguel).

Biology. Has been recorded from May to July at different biotopes (lakes, beach, wet rock wall).

Taxonomy. As mentioned by Frey (1945) H. agostinhoi might be only a dark legged form of H. guttata and examination of the male terminalia should be done when material is available. One male from mainland Portugal will key out as H. agostinhoi due to almost completely black legs but fits otherwise to H. guttata (22.iii.2018, Setúbal, rice fields n Carvalhal [38.313° N 8.746° W], leg. et coll. Stuke). Strobl (1900) describes such specimens from Spain as H. guttata var. obscuripes and H. guttata var. nigripes .