DISTRIBUTION:

Orthogonioptilum bergeri (wingspan: males: 55-68mm; females: larger) flies in
northeastern Zaire (Democratic Republic of Congo); and
the Republic of Central Africa.

Orthogonioptilum bergeri male, All leps barcode of Life.

The forewing is very falcate (more than O. prox or O. neoprox), and the hindwing is elongated (more than O. ueleense). The ground colour is dark reddish-brown. The forewing post median line is well marked and quite thick. The transverse line is also well marked, especially on the hind wing.

The forewing antemedian line is a bit more subdued, especially near the costa. The fw median area is dark brown in its lower reaches and orangey-brown toward the costa and apex. There is a generous amount of grey-violet scaling highlighting all the lines.

Orthogonioptilum bergeri male, All leps barcode of Life.

The underside is a little redder and noticably uniform. There are two good sized "points of light" on each wing, and on the hindwing there is a third tiny point.

Orthogonioptilum bergeri male, Congo, July
Lepidoptera Types of the Royal Museum for Central Africa

This moth is very similar to Orthogonioptilum adustum. They may some day be synonymized.

FLIGHT TIMES AND PREFERRED FOOD PLANTS:

This moth flies in July and possibly in other months.

Orthogonioptilum bergeri larval hosts are unknown.

Orthogonioptilum bergeri male, All leps barcode of Life.

ECLOSION, SCENTING AND MATING:

EGGS, LARVAE, COCOONS, AND PUPAE:

Larval Food Plants

It is hoped that this alphabetical listing followed by the common name of the foodplant will prove useful. The list is not exhaustive. Experimenting with closely related foodplants is worthwhile.

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The pronunciation of scientific names is troublesome for many. The "suggestion" at the top of the page is merely a suggestion.

There are many collectors from different countries whose intonations and accents would be different.

The genus name Orthogonioptilum refers to the nearly right angle at the anal angle of the forewing.

I suspect ??? the species name is honourific for Berger.