Dichrorampha flavidorsana Knaggs, 1867 Species
Last modified: Dec. 21, 2023, 10:06 a.m.
A rare species in Belgium. Status insufficiently known, because most of the species of this genus should be checked for genitalia.
Details
- Classification
- Family: Tortricidae > Subfamily: Olethreutinae > Tribus: Grapholitini > Genus: Dichrorampha > Species: Dichrorampha flavidorsana
- Vernacular names
- Geelvlekwortelmot (NL), Narrow-blotch Drill, Orange-spot Tansy Moth (EN), Gelbrücken-Rainfarnwickler (DE)
- First mention in Belgium
- De Crombrugghe G. 1898. Note sur quelques Lépidoptères nouveaux pour la faune belge. — Annales de la Société Entomologique de Belgique 42: 34–38. On page 35.
- Status
-
Native
Distribution
Imago
Wingspan 13–15 mm. Very similar to Dichrorampha alpinana, genitalia dissection is the only assured method of identifying these two species. Proximity of the foodplant is no guarantee of identification.
This species has dark brown forewings with orange powdering. Fairly broad curved yellowish medio-dorsal blotch. Black dots near outer edge. White costal streaks, a couple of which continue as silvery lines.
Museum specimens
No pictures yet!Specimens in nature
No pictures yet!Genitalia
Caterpillar
The larva is whitish with a light brown head, the neck shield and anal valve are yellowish, not very pronounced.
Bionomics
The larva lives in the roots of the food plant and hibernates. It pupates in a cocoon in the larval habitation or on a rootstock.
The adults are active during daytime, especially in the afternoon and later come sparsely to light.
Flight periods
The adults have been observed from early May towards September.
Observed on
- Host plant (species):
- Tanacetum vulgare and Leucanthemum vulgare
The larva lives on Tanacetum vulgare.
Habitat
It inhabits gardens, waste ground, herb-rich roadsides, flowery meadows etc...
