Drusus biguttatus
- kingdom: Animalia
- phylum: Arthropoda
- class: Insecta
- order: Trichoptera
- family: Limnephilidae
- genus: Drusus
- species: Drusus biguttatus
- Dellach
- Feld am See
- Ferlach
- Gmünd
- Lendorf
- Radenthein
- Trebesing
Carinthia
Austria- Aschau im Chiemgau
- Krün
- Mittenwald
Bavaria
Germany- Courmayeur
- Gressoney-Saint-Jean
Aosta Valley- Collegno
- Crissolo
- Grugliasco
Piedmont- Canazei
- La Valle - Wengen
- Moso in Passiria - Moos in Passeier
Trentino-Alto Adige
Italy