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species
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Lasius alienus
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Japanese Name
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Hime-tobiiro-ke-ari
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Original Reference
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Foerster, A. (1850) Hymenopterologische Studien 1. Formicariae: 74 pp. Aachen.
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Synonym
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Formica alienus Foerster (Foerster, 1850) ,
Lasius alienus (Foerster) (Mayr, 1861) ,
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Description
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Total length of workers around 2 - 2.5 mm. Body blackish brown. This species closely resembles L. japonicus, and it is especially difficult to separate specimens of the two if they are derived from incipient colonies. However, when specimens from mature colonies are compared L. alienus is distinguished by the following characteristics: (1) scapes and anterior tibiae either lacking erect hairs or with fewer than 10 hairs; (2) body relatively small, dorsal pronotal width less than 0.70 mm. In females, L. alienus is easily distinguished from L. japonicus by the absence of erect hairs on the antennal scapes and anterior tibiae.
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Remarks
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This species is rarely encountered. It has been recorded from Japan since the early 20th century (e.g. Wheeler, 1906; Teranishi 1915, 1930; Morisita,1945).
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Distribution
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Hokkaido, Honshu, Shikoku; Korean Peninsula, Eurasia.
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References
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- Wheeler, W. M. (1906). The ants of Japan. . Bull. Amer. Mus. Nat. Hist., 22, 301-329.
- Teranishi, C. (1915). Ants of Osaka and its vicinity. . Insect World, 19, 194-198. .
- Die EuropŠischen Formiciden. (Ameisen.): 80 pp. Wien.
- Teranishi, C. (1930a. ). Winged ants attracted to an arc light at the Nawa Entomological Laboratory. . Kansai Kontyu Zasshi , (1, 87-89. .
- Morisita, M. (1945b. ). Ants. . In H. Furukawa ed.Natural history of Japan 5Insect 2, 1-56. .
- Hymenopterologische Studien 1. Formicariae: 74 pp. Aachen.
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Editor
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Original text by Mamoru Terayama and Katsusuke Yamauchi. English translation by Mamoru Terayama, edited by Robert W. Taylor.
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