Published December 31, 1990 | Version v1
Taxonomic treatment Open

Bariamyrma Lattke, 1990, gen. n.

Authors/Creators

Description

Bariamyrma gen. n.

Type-species: Bariamyrma hispidula sp. n.

Diagnosis of queen

Ants belonging to the subfamily Myrmicinae.

1. Mandibles triangular, with a series of 9 teeth on the masticatory margin, the apical tooth being the largest.

2. Palp formula 3,2 (in situ count).

3. Anterior clypeal border convex, medially produced into a blunt point and covering basal mandibular margins.

4. Clypeus posteriorly narrowly inserted between the widely separated frontal lobes.

5. Clypeus with longitudinal rugae, not distinctly bicarinate but with a prominent anteromedian carina.

6. Lateral portions of clypeus not posteriorly raised into a shield-wall in front of the antennal fossae.

7. Anterior margin of clypeus with hairs but without a single prominent median seta.

8. Frontal carinae extend posteriorly to slightly behind the eyes; almost as long as the scapes and posteriorly diverging one from another.

9. No evident antennal scrobe present.

10. Antennae with 12 segments, funiculus clavate with a vague 3-merous club; each funicular segment sharply constricted one from another.

11. Frontal triangle well defined, smooth and shining.

12. Propodeal spiracle situated slightly above mid-height of sclerite, close to junction of metapleuron and anterad of teeth, well back from the edge of the declivitous face.

13. Declivitous propodeal face with a pair of sharply pointed triangular lateral teeth joined by carinae to the well developed, bluntly pointed inferior propodeal plates.

14. Posteroventral alitrunk with a median convex emargination, not open and extending anterad of hind coxae.

15. Metasternal process absent.

16. Strongly pedunculate petiole, node conical with a bluntly pointed apex, petiolar ventrum with a low longitudinal carina, no prominent process.

17. Petiolar spiracle is at mid-peduncular length.

18. Postpetiolar node dome-shaped as seen laterally, and campaniform dorsally; prominent transverse subpostpetiolar process.

19. Sting weakly sclerotized and ending in a prominent lobular flange.

20. Apex of meso- and metatibiae each with a single simple spur.

21. Strongly sculptured cuticle except for gaster.

Features of the anterior wing venation include Mfl branching out quite distad of cu-a, the absence of 1r and r-m, the continuity of 2r and Rsf2-3. One cubital cell is present and the radial cell is closed. The posterior wing has only one cell, neither Rs, M, nor CuA extends after r-m, and M-Cu does not reach the wing base. A thickened cu-a reaches toward but does not touch the brief and thick anal vein. Wings with abundant decumbent pilosity, borders of posterior wings with a fringe of short hairs, but such a fringe lacking about the anterior wings.

Notes

Published as part of Lattke, J., 1990, A new genus of myrmicine ants (Hymenoptera: Formicidae) from Venezuela., pp. 173-178 in Entomologica Scandinavica 21 on pages 173-174

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Linked records

Additional details

Biodiversity

Scientific name authorship
Lattke
Kingdom
Animalia
Phylum
Arthropoda
Order
Hymenoptera
Family
Formicidae
Genus
Bariamyrma
Taxon rank
genus
Taxonomic status
gen. n.
Taxonomic concept label
Bariamyrma Lattke, 1990