Rogeria leptonana

Identification
Kugler (1994) - WL 0.54-0.66mm. Median clypeal apron concave to convex. Eye small, nearly circular. Propodeal spines small to absent. Mesosoma low, slender (MHI 0.78-0.90; PW jWL 0.53-0.58). Petiole with moderate to large keel. Postpetiolar node from above as in Fig. 66. Anterior lip of postpetiolar sternum not prominent. Sides of head distinctly macro- or microsculptured. Mesosoma rugose, sometimes with strongly microareolate sides. Erect hair on scapes and usually on extensor surfaces of tibiae.

Distribution
This taxon was described from Panama.

Nomenclature

 *  leptonana. Rogeria leptonana Kugler, C. 1994: 58, figs. 66-70 (w.q.m.) PANAMA.

Worker
Holotype and Paratype. TL 2.1-2.3 (2.1), HL 0.50-0.55 (0.51), HW 0.43-0.46 (0.44), SL 0.32-0.34 (0.32), EL 0.05-0.07 (0.06) (7-10 facets), PW 0.32-0.36 (0.33), WL 0.57-0.61 (0.57), SpL 0.07-0.10 (0.07), PetL 0.20-0.23 (0.21), PpetL 0.12-0.13 (0.13)mm, CI O.83-0.86 (0.86), OI 0.1 1-0.15 (0.14), SI 0.73-0.75 (0.73), PSI 0. 12-0.16 (0.12), MHI 0.83-0.90 (0.83). N=4

Mandibles triangular, with 5 teeth and occasional denticle; basal tooth larger than penultimate tooth. Palpal formula 3,2. Median clypeal apron concave. Body of clypeus projecting slightly over edge of apron. Posterior outline of head wry weakly concave or flat. Nuchal groove indistinct in lateral view. Mesosoma dorsal profile nearly flat. Propodeal spines short with wide base, a bisecting line passes just above anteroventral corner of pronotum. Spiracle about 1 diameter from nearest edge of infradental lamella. Petiolar node small. Postpetiole widest in anterior half. Ventral profile of sternum concave; anterior tip not prominent.

Head rugose-areolate to areolate on laterodorsa and sides, transversely areolate-rugose on posterior head. Macrosculpture well defined on posterior head, weaker on dorsum and sides. Areolate microsculpture gives a granular appearance to dorsum and sides of head, where it largely obscures the weak macro sculpture; intervals on posterior head nearly smooth. Anterior edge of pronotal disc transversely rugose-areolate. Rest of promesonotal dorsum longitudinally rugose with occasional laterals; microsculpture cbscure. Mesosoma sides with confused areolate macro- and microsculpture; the latter quite strong, giving a granular appearance. Petiole appears granular, with vestigial overlying macrosculpture. Postpetiolar node smooth; sides and venter appear granular.

Mesosoma dorsum with more than 12 pairs of emergent erect hairs; nodes each with at least 2 pairs of long posterodorsally projecting hairs. Tibiae with erect hairs.

Body yellowish-brown to brownish-yellow; frontoclypeal area and appendages lighter, more yellowish.

Nontypes. TL 2.2-2.5, HL 0.54-0.60, HW 0.43-0.50, SL 0.34-0.40, EL 0.04-0.08 (5-9 facets), PW 0.33-0.35, WL 0.54-0.66, SpL 0.03 (no spines)-0.11, PetL 0.21-0.26, PpetL 0.12-0.16mm, CI 0.80-0.83, OI 0.09-0.12, SI 0.77-0.83, PSI 0.05 (no spines)-0.18, MHI 0.78-0.90. N=8

Type description extended as follows. Mandibles subtriangular in Dominican Republic specimens. Clypeal apron convex in the Chiriquí, Panama specimens and truncate in Chiapas and Dominican Republic. Body of clypeus not projecting beyond clypeal apron in Chiapas specimen. Basal tooth may equal penultimate basal in size. Scapes slightly longer (SI 0.77-0.83). The Ocosingo, Mexico specimen has slightly longer spines than types (PSI 0.18); Cerro Pico Blanco, Costa Rica specimens have very short spines (PSI 0.07-0.10) those from Panama are devoid of armature. Short propodeal spines of Costa Rican specimens are more inclined than in types; a bisecting line passes just below the axilla. Postpetiole of Chiapas and Pedernales, Dominican Republic specimens narrower than others (PpetW/PpetL1.23-1.28 vs. 1.41-1.56); Pedernales postpetioles are widest in posterior half. Microsculpture on head may be less distinct than in types. Panamanian specimens lack erect hair on extensor surfaces of tibiae and have only 9 pairs of erect hairs on the mesosoma dorsum.

Queen
Possible Queens. —TL 2.6-2.8, HL 0.60-0.61, HW 0.52-0.53, SL 0.40, EL 0.12-0.13, PW 0.45, WL 0.73-0.78, SpL 0.14-0.17, PetL 0.28-0.30, PpetL 0.14-0.16mm, CI 0.86-0.88, OI 0.20-0.23, SI 0.75-0.77, PSI 0.19-0.22, MHI 0.92-0.97. N=2

Both queens collected on the north coast of Colombia. Though workers of leptonana are unknown from South America, these queens have strongest affinities to leptonana workers: Mandible with 5 teeth; basal as large as or larger than penultimate basal. Clypeal apron emarginate. Posterior outline of head flat. Propodeal spines wide. Propodeal spiracle 2 diameters from edge of infradental lamella. Mesosoma low. Petiolar peduncle with prominent lamellate keel; node short. Pygidium and sting apparatus as in workers.

Sculpture also as in workers. Microsculpture present but indistinct on head and mesosoma. Pronotum with 1-2 transverse rugae medially; laterally rugose. Meso- and metanota longitudinally rugose, with nearly smooth, shiny intervals. Meso- and metapleura longitudinally rugose, except for smooth, shiny mesokatepisterna. Dorsal face of propodeum smooth. Petiole, including peduncle, and postpetiole nearly smooth. There are differences, however. Palpal formula 2,2 in the dissected Guajiran queen (vs. 3,2 in workers). One queen has a nearly subrectangular postpetiole. Neither has erect hair on the tibiae.