cat: Mosca de potes llargues; esp: Mosca de patas largas; eng: Long-Legged Fly
Bagà-Catalonia-Spain
phylum: Arthropoda > (Unirramia) > Hexapoda > class: Insecta > (Pterygota) > (Neoptera) > Endopterygota > order: Diptera > (Brachycera) > (Asilomorpha-Empidoidea) > family: Dolichopodidae
Long legs is an adaptation for treading on the water, and feed in the ponds and stagnant water. Predator flies.
Predator flies, as you can see.