MONOMORIUM

(Subfamily Myrmicinae)

Taxonomy

The genus Monomorium was established by Mayr (1855), and is assigned to the Solenopsis genus group of the tribe Solenopsidini (Bolton 2003). Concept of the genus was revised by Bolton (1987), and was recently widened by Fern√°ndez (2007).

Images


Monomorium sp. eg-x, worker, body in lateral view.


Monomorium sp. eg-x, worker, head in full-face view.

Distribution

Twelve species have so far been found from Vietnam. The species marked with asterisks have not yet been examined by us.

*annamense Donisthorpe Type locality: Da Lat (Lam Dong)
chinense Santschi [= sp. eg-6] Ba Vi NP (Ha Noi); Cuc Phuong NP (Ninh Binh); Tam Dao NP (Vinh Phuc)
floricola (Jerdon) [= sp. eg-7] Que Phong (Nghe An); Pu Mat NP (Nghe An)
hiten Terayama [= sp. eg-3] Ba Be NP (Bac Can); Ba Vi NP (Ha Noi); Cuc Phuong NP (Ninh Binh); Tam Dao NP (Vinh Phuc); Tay Yen Tu NP (Bac Giang); Van Ban (Lao Cai)
pharaonis (Linnaeus)
[= sp. eg-4]
Ba Be NP (Bac Can), Ba Vi NP (Ha Noi); Cuc Phuong NP (Ninh Binh); Nui Chua (Ninh Thuan); Pu Mat NP (Nghe An); Quang Tri (Quang Tri); Tam Dao NP (Vinh Phuc)
sechellense Emery [= sp. eg-5] Ba Vi NP (Ha Noi); Binh Chau-Phuoc Buu (Ba Ria-Vung Tau); Cuc Phuong NP (Ninh Binh); Pu Mat NP (Nghe An)
*silvestrii Wheeler Type locality: Yen Bay
Other locality: Van Phu
sp. eg-1 Ba Vi NP (Ha Noi); Cuc Phuong NP (Ninh Binh); Pu Mat NP (Nghe An); Tam Dao NP (Vinh Phuc); Tay Yen Tu NP (Vinh Phuc); Van Ban (Lao Cai)
sp. eg-2 Ba Be NP (Bac Can), Cuc Phuong NP (Ninh Binh); Tay Yen Tu NP (Bac Giang)
sp. eg-8 Nam Cat Tien NP (Dong Nai); Phu Quoc NP (Kien Giang); Pu Mat NP (Nghe An)
sp. eg-9 Nui Chua NP (Ninh Thuan)
sp. eg-10 Nui Chua NP (Ninh Thuan); Phu Quoc NP (Kien Giang)

Bionomics

Monomorium inhabits various habitats such as open lands, grasslands, forest edges and well-developed forests. Their nests are usually found under stones and in soil. Most species forage on the ground, but some such as M. sechellense forage both on and under the ground (Eguchi & Bui 2009).

© Katsuyuki EGUCHI & BUI Tuan Viet, 2007. All rights reserved.