Monomorium intrudens

This species is found in open land, ranging to woodland margins. It nests under stones or in plant cavities, such as small bamboo stems, with Idogawa and Dobata (2018) reporting colonies nesting in bamboo cavities in Kyoto Prefecture, Japan in a thicket dominated by deciduous broad-leaved trees. Monomorium intrudens is one of the most common ant species of southwestern Japan. (Japanese Ant Image Database)

Distribution based on Regional Taxon Lists
Australasian Region: Australia. Indo-Australian Region: New Guinea. Palaearctic Region: China, Japan, Republic of Korea.

Nomenclature

 *  intrudens. Monomorium intrudens Smith, F. 1874: 406 (w.) JAPAN. Junior synonym of floricola: Wheeler, W.M. 1906c: 310. Revived from synonymy and senior synonym of nipponense: Bolton, 1987: 390 (in text). Senior synonym of gracilum, robustum, satoi: Ogata & Bolton, 1989: 460. Current subspecies: nominal plus pieli.
 * nipponense. Monomorium nipponense Wheeler, W.M. 1906c: 310 (w.) JAPAN. Santschi, 1928b: 34 (q.m.). Junior synonym of intrudens: Bolton, 1987: 390 (in text); Ogata & Bolton, 1989: 460.
 * gracilum. Monomorium (Parholcomyrmex) nipponense var. gracilum Teranishi, 1940: 29 (q.) JAPAN. Junior synonym of intrudens: Ogata & Bolton, 1989: 460.
 * robustum. Monomorium (Parholcomyrmex) nipponense var. robustum Teranishi, 1940: 29 (q.) JAPAN. Junior synonym of intrudens: Ogata & Bolton, 1989: 460.
 * satoi. Monomorium (Parholcomyrmex) nipponense var. satoi Teranishi, 1940: 30 (w.q.) JAPAN. Junior synonym of intrudens: Ogata & Bolton, 1989: 460.

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