Dares ulula

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Dares ulula
Dares ulula, pair
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Phasmatodea
Family: Heteropterygidae
Subfamily: Dataminae
Tribe: Datamini
Genus: Dares
Species:
D. ulula
Binomial name
Dares ulula
(
Westwood
, 1859)
Synonyms[1]
  • Acanthoderus ulula Westwood, 1859
  • Dares (Dares) calamita Redtenbacher, 1906
  • Dares (Dares) corticinus Redtenbacher, 1906

Dares ulula is a species of stick insects. Like most other members of the genus Dares, the species is native to Borneo, more precisely in the northwest of the island. The males are extremely prickly even for the representatives of the genus Orestes. Females are colored with a relatively high contrast.

Characteristics

The species shows roughly the typical

antennae
consist of 25 segments. Their basal segment (scapus) is flat and have clear teeth on the outside. The abdomen is widest in the middle.

The males remain smaller than the females at 35 to 43 millimetres (1.4 to 1.7 in) in length, but are also very contrasting in color. While the head and legs are medium brown, the coloration of the

metanotum there are a total of three further pairs of spines. To the side of it there is another spine on the pleura. There are no spines on the abdomen. The antennae of the males consist of only 23 segments. Their basal segment is also flat and have clear and relatively pointed teeth on the outside.[2][3]

Distribution area and lifestyle

Dares ulula is widespread in the

plantations
.

With their defensive behavior and nocturnal lifestyle, this species differs little from other Dares species. Their defense strategy is based on phytomimesis. When touched, the animals let themselves fall to the ground, where they play dead until the threat has passed. The females lay their eggs on the ground. The eggs are not quite spherical and almost hairless. They are approximately 4.7 to 4.5 millimetres (0.19 to 0.18 in) long and 3.9 millimetres (0.15 in) wide. Their micropylar plate has four arms and the shape of an "X". The arms reach far around the egg. The nymphs are usually very dark in color and show conspicuously bright, mostly yellow-orange patterns around the resulting spines that increase with age or their stage of development.[2][3][4]

Taxonomy

Muséum national d'histoire naturelle in Paris.[1][2][5][6][7]

Terraristic

The first live specimens of this species came to Europe in 1991. Both

terrariums
. Since then the species has been introduced several times. It is considered to be delicate to care for, but because of its appearance it is the most sought-after representative of the genus.

Like the other species of the genus, it prefers a higher

brambles and many other Rosaceae, the leaves of various Betulaceae are also eaten.[3][4]

The Phasmid Study Group listed Dares ulula under PSG number 117.[8]

References

  1. ^ a b Brock, P. D.; Büscher, T. H. & Baker, E. W. Species File Online. Version 5.0. (accessdate 1 August 2021)
  2. ^
    ISBN 983-812-027-8
  3. ^
    ISSN 2190-3476
  4. ^ a b phasmatodea.com by Hennemann, F. H.; Conle, O. V.; Kneubühler, B. & Valero, P.
  5. Westwood, J. O. (1859). Catalog of the orthopterous insects in the collection of the British Museum. Part I. Phasmidae.
    London, p. 53 & plate 26 Fig. 1
  6. ^ Josef Redtenbacher (1906). Die Insektenfamilie der Phasmiden. Vol. 1. Phasmidae Areolatae. Verlag Wilhelm Engelmann, Leipzig, pp. 53–56
  7. ISBN 90-73239-61-3, Download version
  8. ^ Phasmid Study Group Culture List

External links

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