Hymenoptera Formicidae of Guam Author Swezey, O. H. Experiment Station, Hawaiian Sugar Planters' Association, Honolulu text 1942 1942-06-01 Bernice P. Bishop Museum Honolulu, Hawaii Insects of Guam I 175 183 book chapter 4949 10.5281/zenodo.5160270 6dc2872d-cbab-4982-baed-c0969e3e3236 5160270 C4A38F8E-02D3-48C2-BA54-527B7B7E8E1B 15. Pheidole umbonata Mayr , Sitzungsb. k. Akad. Wiss. Wien 53 ( 1 ): 510 , 1866 ; Zool. bot. Ges. Wien, Verh. 20 : 978 , 1870 . Wheeler , B. P. Bishop Mus., 0cc. Papers 11 ( 11 ) : 19 , 1935 . Mt. Tenjo , May 3 , under stones, Swezey ; Machanao , May 4 , 16, in moss, Swezey ; Tumon , May 30 , under bark, Usinger ; Piti , July , Swezey ; Barrigada , July 6 , 22, Swezey ; Yigo , Nov. 13 , Swezey . This dark brown ant is widespread in the Pacific islands from Marquesas, Tahiti, Samoa , Fiji , Tonga , New Caledonia , New Britain, Solomons and Papua. Now recorded from Guam for the first time. We found it widely distributed, and the most abundant of the species of Pheidole in Guam . Determination by M. R. Smith.