Tiger rule
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Tiger rule ( Haemadipsa picta ) |
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| Haemadipsa picta | ||||||||||||
| Moore , 1929 |
The tiger's rule ( Haemadipsa picta ) is a type of landing leech (Haemadipsidae) that attacks various vertebrates and humans as a blood- sucking parasite in the branches of humid forests in Southeast Asia .
features
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The body of Haemadipsa picta is slender and elongated. In the middle of the back there is an area with 3 or 5 dark brown stripes on a bluish gray background, the inner stripes being more or less interrupted. In between there are pairs of lively orange-reddish fields. At the edge there are white stripes, which are bordered by a black black line running near the edge and surrounded by an outer row of black dots. The head and the rear suction cup are light blue, the belly orange and without a mark. The tiger rule has 80 to 85 radial ribs on the ventral surface of the rear suction cup. The indentations of the furrows on the body surface are hardly pronounced. The eyes of the 3rd and 4th pair are usually not surrounded by a halo and not set off by white spots. The leech has a well-developed collar at the front end. Like other leeches of the genus Haemadipsa , it has three jaws, each with a simple row of teeth, each with 78 to 89 teeth. Haemadipsa picta becomes about 13 to 33 mm long. The diameter of the front suction cup is about 1.3 to 2.5 mm, that of the rear 2.5 to 3.7 mm.
Habitat and way of life
The tiger rule lives in the branches of bushes and trees above a height of 1 m, which is why it attacks its host from above and can also fall on a host. Unlike Haemadipsa zeylanica and Haemadipsa sylvestris , but similar to the Indian species Haemadipsa ornata , which also lives in the branches , the bite of Haemadipsa picta causes very painful wounds.
distribution
Haemadipsa picta is common in Borneo , Indochina and Taiwan .
Reproductive cycle
Like other leech is the term usually a hermaphrodite , who as Kieferegel a penis has. With mutual copulation, the sperm is transferred through the penis directly into the gonopore of the sex partner. The eggs are laid in a protective cocoon, where they develop into ready-made little leeches.
literature
- Yi-Te Lai, Takafumi Nakano, Jiun-Hong Chen: Three species of land leeches from Taiwan, Haemadipsa rjukjuana comb. n., a new record for Haemadipsa picta Moore, and an updated description of Tritetrabdella taiwana (Oka). In: ZooKeys. Number 139, 2011, pp. 1–22, doi : 10.3897 / zookeys.139.1711 , PMID 22259307 , PMC 3260908 (free full text).
- Hugh L. Keegan, Seiichi Toshioka, Hiroshi Suzuki: Blood Sucking Asian Leeches of Families Hirudidae [sic] and Haemadipsidae. US Army Medical Command, Japan, 1968.
- JP Moore: Arhynchobdellae. In: WA Harding, JP Moore (Ed.): The Fauna of British India, including Ceylon and Burma. Hirudinea. Taylor and Francis, London 1927. pp. 97-298, here 254ff.
- JP Moore (1929): Leeches from Borneo with descriptions of new species. Proceedings of the Academy of Sciences Philadelphia 81, pp. 267-295.
- A. Soos (1967): Identification key to the leech (Hirudinoidea) genera of the world with a catalog of the species. IV. Family: Haemadipsidae. Acta Zoologica Academiae Scientiarum Hungaricae 13, pp. 417-432.
Individual evidence
- ^ A b Roy T Sawyer, Alan Taylor, Mohd Jaya bin Hj Sahat (1982): The leeches of Brunei (Annelida: Hirudinea), with a checklist and key to the known and expected freshwater, terrestrial and marine leeches of Borneo. Brunei Museum Journal 5 (2), pp. 179f.
- ↑ Yi-Te Lai, Takafumi Nakano, Jiun-Hong Chen (2011): Three species of land leeches from Taiwan, Haemadipsa rjukjuana comb. n., a new record for Haemadipsa picta Moore, and an updated description of Tritetrabdella taiwana (Oka). ZooKeys 139, pp. 1-22.
