Evergestis isatidalis
Evergestis isatidalis, males
Evergestis isatidalis is a butterfly of the family of Crambiden ( Crambidae ).
Features
The moths have a wingspan of 28-34 millimeters. On the forehead ( frons ) is a dome- shaped projection. The labial palps are short and directed downward. Head and body are dark gray white or brownish white. The forewing is longer and narrower than in the other European members of the genus Evergestis. The Costa loader is slightly curved, the apex is pointed and the outer edge of wing is very slanted. The wings have a pale yellow ground color and are variably mottled brownish gray or brown. The most striking drawing element is a dark stain kidney itself is a less visible round spot located in its vicinity. The external cross- line is curved and slightly S-shaped. It consists of a series of dark points that are located on the Flügeladerung. Along the outer edge of wing small black dots are applied between the wire ends. A more or less distinct black line on the wing outer edge is sometimes extended as indistinct wavy Subterminallinie. The fringe scales are equipped with two monochrome and dark lines. The hindwing is yellowish relatively wide and depending on locality to white. The outer transverse line is dark and runs parallel to the outer wing margin. The interior angle is marked with a faded dark spot. There is a row of black dots between the wire ends. The fringe scales are one color. The forewing underside is darker than the hind wing underside. Both bases are drawn with a narrow, dark outer transverse line. The fringe scales are hardly spotted.
In the male the uncus has a blunt tip that is covered with recurved, hair-like bristles. The Gnathos is dagger- like and has five widely spaced apical teeth. The Valven are parallel-walled and have a hairy surface. The apex is obliquely rounded and the Costa is thickened. The clamp member ( Clasper ) is missing. The phallus is bumpy at the branch point, the distal part is provided with a pair papillenartig and long, spiky areas.
In females, the corpus bursae is just egg-shaped and constricted in the middle. The signals are inconspicuous. The ductus bursae is wound and tapers abruptly in the middle. The antrum is small and funnel-shaped.
Dissemination
Evergestis isatidalis occurs in the Canary Islands, Porto Santo ( Madeira ), in the Mediterranean and Iceland. In North Africa, one finds the way in Morocco and Algeria. In the east it occurs in Turkey, Cyprus and Iran.
Biology
The caterpillars develop in woad ( Isatis tinctoria ), in the south of Spain also on arable radish ( Raphanus raphanistrum ) and Senfrauke ( Eruca vesicaria ). The caterpillars live on the coast from February to March and in the hill country from April to May They pupate in a cocoon underground. The moths emerge from December to January. They are nocturnal and come to light.
System
From the literature, the following synonyms are known:
- Scopula isatidalis Duponchel, 1833
- Pionea conquisitalis Guenée, 1849