Last modified: May 16, 2024, 11:57 a.m.
A common species throughout Belgium.
This species is considered Least Concern according to the IUCN Red List category for Flanders 2023.
Native
Males: the genitalia of males Macaria alternata and Macaria notata are almost indistinguishable. On M. alternata, the sacculus is stated to be slightly more protruding than on Macaria notata, but this should not be regarded as diagnostic, however examination of the eighth sternite is usually sufficient for ID.
Eight sternite deeply cleft, lobes set close together.
Females: Bursa copulatrix twice or three times lenght of ductus bursae.
Hibernates as pupa in a cocoon underground.
The adults are active from dusk and later come to light.
The adults fly in two generations a year from mid-April till late August.
The larva lives on various deciduous trees like: Salix, Alnus glutinosa, Prunus spinosa and Hippophae rhamnoides.