Diacamma rugosum

Naming

*''Diacamma rugosum anceps'' Matsumura & Uchida, 1926 - China
⤷ ''Diacamma rugosum arcuatum'' Karavaiev, 1925 - Indonesia
⤷ ''Diacamma rugosum balinense'' Karavaiev, 1925 - Indonesia
⤷ ''Diacamma rugosum birmanum'' Emery, 1887 - Myanmar
⤷ ''Diacamma rugosum celebense'' Emery, 1887 - Indonesia, Sulawesi
⤷ ''Diacamma rugosum doveri'' Mukerjee, 1934 - India
⤷ ''Diacamma rugosum gibbosum'' Karavaiev, 1935 - Vietnam
⤷ ''Diacamma rugosum hortense'' Karavaiev, 1925 - Indonesia
⤷ ''Diacamma rugosum javanum'' Emery, 1887 - Indonesia
⤷ ''Diacamma rugosum jerdoni'' Forel, 1903 - India
⤷ ''Diacamma rugosum latispinum'' Karavaiev, 1925 - Indonesia
⤷ ''Diacamma rugosum lombokense'' Emery, 1897 - Indonesia
⤷ ''Diacamma rugosum longiceps'' Santschi, 1932 - Vietnam
⤷ ''Diacamma rugosum ovale'' Karavaiev, 1935 - Vietnam
⤷ ''Diacamma rugosum rothneyi'' Forel, 1900 - India
⤷ ''Diacamma rugosum rugosum'' - Borneo, Indonesia, New Guinea, Philippines, Singapore, Bangladesh, India, Sri Lanka, Thailand, Vietnam, China
⤷ ''Diacamma rugosum sculptum'' Jerdon, 1851 - Bangladesh, India, Nepal
⤷ ''Diacamma rugosum sikkimense'' Forel, 1903 - India
⤷ ''Diacamma rugosum timorense'' Emery, 1887 - Indonesia, Timor
⤷ ''Diacamma rugosum viridipurpureum'' Emery, 1893 - Philippine, India, China

Reproduction

''D. rugosum'' is noted for being one of the only species of ants to completely lack a queen caste. Reproduction is done entirely by workers, with all workers being fertile upon birth. However, reproduction is kept strictly under control in the nest, with only one dominant female, or gamergate, laying all of the eggs. The gamergate will render workers sterile by mutilating their vestigial wing buds as soon as they pupate. These infertile workers, called callows, will remain loyal to the present gamergate and allow her to exercise control over the rest of the workers. This works to reduce colony infighting as it makes usurpation virtually impossible, and the only time the gamergate is replaced is if she dies naturally.