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Celenna festivaria Fabricius comb. rev.  
Phalaena festivaria Fabricius, 1794, Ent. Syst., 3(2): 152.
Geometra saturataria Walker, 1861, List Specimens lepid. Insects Colln Br. Mus., 22: 519.
Hypochrosis festivaria temperata Prout, 1925, Ent. Mitteilungen, 14: 311.
Hypochrosis festivaria formosensis Inoue and H. f. manifesta Inoue, 1964, Kontyu, 32: 338.
Hypochrosis festivaria Fabricius; Holloway, 1976: 76.

Celenna festivaria

This and the next species are very similar but, whereas centraria Snellen has the forewing band entire, in festivaria it is divided in two. The hindwing patch has an excavation at the centre of its interior margin in festivaria but is more evenly rounded in centraria.

Taxonomic notes. The species is characterised by having a strong process in the centre of the ventral margin of the valve. This is tapering in typical Indian material but apically spatulate, with the genitalia generally more robust, in Bornean material. In the aedeagus vesica the basal groups of cornuti are reduced in Bornean material but the single cornutus is slightly longer, sinuous. The two subspecies described by Inoue have the green areas of the wings much extended, but the genitalia resemble those of Indian specimens. Sundanian material may be referable to ssp. temperata but this taxon was based on a single female, and no Philippines males were available for examination.

Geographical range. India, Burma, Borneo, Java; Taiwan (ssp. formosensis Inoue); Ryukyu Is. (ssp. manifesta Inoue); Luzon (ssp. temperata Prout).

Habitat preference. In Borneo the species has mostly been taken in montane forests between 1000m and 2000m (G. Kinabalu, G. Api, G. Mulu, Bukit Retak) but specimens have also been taken in lowland dipterocarp forest on G. Mulu and at Samarinda in the lowlands of Kalimantan.

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