1985] 
Wilson — Dominican amber ants. 1 
5 
tive myrmicine shape; and its hairs are thinner and less uniform and 
regularly distributed (furthermore, in Calyptomyrmex and Dicro- 
aspis the hairs are blunt-tipped or, in the case of most species, 
spatulate or scale-shaped). In addition, Dicroaspis has 11- 
segmented antennae. 1 am inclined to regard the resemblance in 
frontal lobe shape between llemomyrmex and the two African gen- 
era as having arisen by convergent evolution. 
Oxyidris, new genus 
Diagnosis {worker). A very small myrmicine with closest overall 
resemblance to the South American genus Oxvepoecus, particularly 
in the general form of the antenna and waist; but differing in its lack 
of eyes, its 12-segmented antennae (1 1 in Oxvepoecus ), in its 3 (pos- 
sibly 4) mandibular teeth (4-5 in Oxvepoecus ), and in its unarmed 
propodeum (angular or spinous in Oxvepoecus). (From Gr. oxys, 
sharp, acute; and Gr. idris, wise one; also to note resemblance to 
Oxvepoecus ). 
Type species: Oxyidris antiliana. 
Oxyidris antiliana, new species 
(Fig. 3) 
Diagnosis {worker). Distinguished from all known ant species 
by the combination of traits just described for Oxyidris. 
Holotype worker. Head Width 0.36 mm. Head Length 0.45 mm, 
Scape Length 0.30 mm. Antenna 12-segmented with 3-jointed club. 
Head densely and evenly rugulo-punctate (rugulae with longitudinal 
orientation) and opaque. Alitrunk and waist densely and uniformly 
punctate, and opaque. Gaster shagreened, subopaque. Color (which 
may be altered in the fossil state) light reddish brown. 
Dominican Republic: Palo Quemado Mine, Santiago Province. 
Paratvpe workers. Six additional workers, one each in 6 amber 
pieces from Palo Quemado Mine. 
Holotype and paratypes deposited in the Museum of Compara- 
tive Zoology. 
Pheidole tethepa, new species 
(Figs. 4, 5) 
Diagnosis {minor worker). An unusual pheidoline tentatively 
placed in Pheidole, differing from all known species of that genus by 
