Acleris roscidana (Hübner, 1799) Species
Last modified: Dec. 24, 2023, 7:40 p.m.
A very rare and recently discovered species (2018) in the south of Belgium, hitherto only known from two observations in NA.
Details
- Classification
- Family: Tortricidae > Subfamily: Tortricinae > Tribus: Tortricini > Genus: Acleris > Species: Acleris roscidana
- Vernacular names
- Ratelpopulierbladroller (NL)
- First mention in Belgium
- Steeman C. 2019b. Acleris roscidana (Lepidoptera: Tortricidae, Tortricini), nieuw voor de Belgische fauna. — Phegea 47(2): 67–68. On page 67. view page
- Status
-
Native
For your information, the first 10 Belgian observations are listed here:
1) 1 ♀ on 06.viii.2018 at Focant (NA), leg. C. Steeman.
2) 1 ♀ on 17.v.2022 at Focant (NA), leg. C. Steeman et al.
Distribution
Imago
A large Acleris with a wingspan of 26 to 28 mm. Forewing broad and slightly concave with small minute groups of erected scales scattered over the wingsurface, most obvious in the median fascia. Ground colour of forewing ash-grey, spots and markings darker, usually three hazy spots at the level of the costal blotch, furthermore several dark transverse lines at the rear of the forewing. Cilia whitish, hindwing brown. Little variation in colour and pattern within this species.
Museum specimens
No pictures yet!Specimens in nature
Genitalia
Papilla analis broad with small proximal parts, proximal lobes of sterigma slender and a bit tapering terminally. Colliculum short and well sclerotized.
Bionomics
Larvae can be found from June to July in spun leaves of the hostplant. The adults hibernate.
The adults come to light.
Flight periods
From August onwards and after hibernation again till late May.
Observed on
- Host plant (species):
- Populus tremula
- Host plant (genera):
- Populus
Most literature sources mention Populus tremula, other older sources also claim Betula.
