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Euthrix Meigen

Type species: potatoria Linnaeus.

The genus was reviewed by Lajonquire (1978b) as Philudoria Kirby, but see Fletcher & Nye (1982).

It has gastropachine hindwing venation and a 'dead leaf' patterned forewing: an oblique dark line running from the apex to the centre or base of the dorsum where it may engage with a paler blotch within which there are sometimes dark lines.

In the male genitalia the eighth tergite is slightly more sclerotised than the rest and weakly lobed distally. The tegumen is a weak sclerotised ribbon from which arises a pair of setose lobes. The aedeagus is long, curved, slender, heavily sclerotised, fused subbasally to part of the juxta with its apex extending between two anterior juxtal processes which are often reflected by similar processes directed posteriorly from the cubile. The valves, except for the Bornean species where they are unequally bifid, consist each of a single simple sclerotised process, often arising from a broader base.

The larva has lateral protruberances and secondary setae as in other members of the family. A description of the larva of E. laeta may be found below.

The genus is most rich in the tropics and subtropics of mainland Asia but includes Palearctic species and four that extend to the Sunda Shelf. Two occur in Borneo.

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