Yoma sabina

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Yoma sabina
Yoma sabina, male

Yoma sabina , male

Systematics
Class : Insects (Insecta)
Order : Butterflies (Lepidoptera)
Family : Noble butterfly (Nymphalidae)
Subfamily : Spotted butterfly (Nymphalinae)
Genre : Yoma
Type : Yoma sabina
Scientific name
Yoma sabina
( Cramer , 1780)
Cupha prosope
(for comparison)
Wing underside of Yoma sabina
Ruellia tuberosa , a food plant of caterpillars

Yoma sabina is a butterfly ( butterflies )found in Australia and Southeast Asiafrom the noble butterfly family(Nymphalidae).

features

butterfly

The wingspan of the moths averages 67 to 69 millimeters, with the females being slightly larger than the males. The species is characterized by a very low sexual dimorphism . In both sexes, a broad yellow band on a dark brown background stands out on the upper side of both pairs of wings in the post-disk region . The apex of the forewings is pointed and slightly flared. While small yellow spots stand out in the apex area of ​​the males, these are white in the females. On Analwinkel of the hind wings in both sexes a very short tail can be seen. The undersides of the wings depict the drawing of the forewings in pale colors.

Pre-imaginal stages

The egg has a diameter of about one millimeter. It is glossy silver-green in color and shows five fine transverse ribs on the surface.

Freshly hatched caterpillars are mostly green in color, yellowish at the rear end and have long, curved hairs. From the third stage onwards, horn-like growths form on the head. The caterpillars are then predominantly black and orange at the rear end of the body. There are four branched thorns on each segment. In the fifth and final stage, they are about 35 millimeters long, solid black, with long horns and spiky thorns on the body and short white hair on the sides.

The doll is designed as a falling doll, is smooth, gray-brown in color and shows pointed protrusions at the head end.

Similar species

Cupha prosope shows drawing elements that are very similar in color to Yoma sabina , but differs through the round apex of the forewings and the lack of a tail tip at the anal angle of the hind wings.

Occurrence and habitat

The range of the species extends over parts of Indonesia to New Guinea , Burma and the northeast of Australia. In addition to the nominate form Yoma sabina sabina , which occurs in the Moluccas and Timor as well as in New Guinea , the following subspecies are also listed:

  • Yoma sabina atomaria Fruhstorfer , on Borneo
  • Yoma sabina javana ( Fruhstorfer , 1899), in Java
  • Yoma sabina magnus Tsukada , 1995, on Sulawesi and other Indonesian islands
  • Yoma sabina nimbus Tsukada , 1995, in parts of Indonesia
  • Yoma sabina parva ( Butler , 1876), in Queensland and the Northern Territory
  • Yoma sabinaen vasuki Doherty , 1886, in Burma

The species inhabits rainforests in the plain, as well as wetlands and river banks.

Way of life

The moths fly in several generations and can be found in all months of the year. They appear particularly numerous during the rainy season. They like to suck nectar on flowers. The caterpillars feed on the leaves of the acanthus family (Acanthaceae), for example Dipteracanthus bracteatus , Ruellia ripens or Ruellia tuberosa . During the feeding breaks, they hide on the underside of leaves.

Individual evidence

  1. ↑ a b c Michael F. Braby: The Complete Field Guide to Butterflies of Australia , CSIRO, Australia, 2016, ISBN 978-1-48630-100-3
  2. ↑ a b The Life History of Yoma Sabina
  3. ↑ a b Markku Savela: Tanaecia Butler (1869) - distribution. In: Lepidoptera and some other life forms. Retrieved March 2, 2019 .

Web links

Commons : Yoma sabina  - collection of images, videos and audio files