Dacatria

Nomenclature

 *  DACATRIA [Myrmicinae: Stenammini]
 * Dacatria Rigato, 1994b: 155. Type-species: Dacatria templaris, by original designation.

Worker Diagnosis
Terrestrial (?) myrmicine ant with the following characters:

1. Palp formula 3. 2 (counted in situ).

2. Mandibles triangular. five-toothed. The teeth increase in size from the basalmost to the apical. First, second and third tooth (counted from the basal) are separated from one another by a diastema.

3. Clypeus raised in the middle; its lateral portions are shaped as blunt crests which surround the antennal insertions in front, delimiting two somewhat deep sockets. The crests are the continuations of the diverging edges of the flat median clypeal portion. Anteriorly the clypeus appears obliquely truncate, and it has a sharp and hardly prominent convex edge which is obtusely angled in the middle. Posteriorly the clypeus is narrow and is deeply inserted between the frontal lobes. Clypeal setae absent.

4. Frontal triangle poorly defined.

5. Frontal lobes surround the posterior part of the clypeus; they are strongly raised in comparison with it. Their borders are slightly converging in front.

6. Frontal carinae absent.

7. Head with a shallow central furrow which is deeper and wider in its centre; posteriorly it gets narrower joining the occiput without a break. The latter appears almost truncate in side view. The furrow is delimited by two faint longitudinal prominences which posteriorly diverge nearly at right angles.

8. Antennae 12-segmented, with a poorly defined club of three. The scape is robust, and approximately of the same thickness throughout its length; it is clearly bent and barely thinner near the base.

9. Eyes small and quite convex; they are placed a little in front of the midlength of the sides of the head. No more than five ommatidia in their longest row.

10. Occiput with a low backwards projecting nuchal border which surrounds the pronotal "neck".

11. Pronotum bears two rounded low tubercles in the middle.

12. Mesonotum with a smaller raised tubercle posteriorly.

13. Metapleural lobes present.

14. Metanotal groove well defined and deep in profile because of the presence of the mesonotal tubercle and of the raised anteriormost portion of the basal face of the propodeum.

15. Propodeum with two backward directed, sharp, diverging and a little apically upturned spines which are about as long as the distance between their tips.

16. Propodeal spiracles small and nearly circular. Their openings are directed backwards from two low and blunt prominences of the propodeal sides.

17. Petiole with an elongate peduncle and a nearly flat-domed low node. The spiracles are circular and very small, they are placed a little behind the midlength of the peduncle. Postpetiole higher and wider than the petiolar node. It abruptly falls on the basis of the gaster.

18. Tibial spurs absent from second and third pairs of legs.

19. Sting present and simple.

20. Hairs absent from the dorsum of the body. Simple hairs are present at the apex of the gaster and on the mandibles. Slightly clavate hairs on third segment of the gaster. Pubescence short, scattered; it is visible only on the appendices and on the gaster.

21. Integument thick, body appearance dull, gaster shining. Sculpture coarse and irregular, prevalently rugose or rugulose on head and alitrunk. Colour brick red throughout the body; gaster, legs, mandibles and funiculi have a yellowish tinge.