Pictures taken in the field, showing some biotopes and sawfly adults from northern Ecuador. Location a–g Yasuni National Park h Pacto i–m Hacienda San Vicente, Mindo. Leaves of b Anthurium sp. and c Heliconia sp., inspected by d Proselandria alvina and e–g probably Manaos mammeatus, respectively h Biotope where Waldheimia sp. A was common i Biotope of pasture (with orchard in the foreground) where, among others j Inea sp. (P4239.E) and k Waldheimia sp. A were collected l Biotope of forest path m with the precise spot where Stromboceros sutilis (P4239.G) was collected.