Romblonella longinoi

Distribution based on Regional Taxon Lists
Indo-Australian Region: Malaysia.

Nomenclature

 *  longinoi. Romblonella longinoi General, 2016: 113, figs. 1-15 (w.m.) MALAYSIA (Sabah).

Description
In full face view, posterior margin of head shallowly emarginate; head longer than wide; sides of head diverging posteriorly; eyes laterally located, slightly behind midlength of head; shallow scrobe present; frontal carina long, almost reaching the posterior margin of head; scapes short, exceeding posterior edge of eye by about 2X width of distal scape; antennal formula 12:3; mandibles triangular, with 6 robust teeth; palp formula 5:3; median clypeus carinate, with a median carina flanked by 3 pairs of lateral carinae; median clypeus inserted between frontal lobes and about as wide as frontal lobe; anterior clypeal margin entire, without an isolated median seta; head rugoreticulate with short cross-hatches that reach the adjacent rugae; punctae in interstitial spaces; mandibles striate. In lateral view, dorsal margin of mesosoma evenly convex and arched, without grooves or sutures; propodeal spines long and stout; petiole sessile, with anterodorsally directed angle over petiolar spiracle; petiole massive, larger and taller than postpetiole; anterior subpetiolar denticle present; spurs absent on meso- and metatibia. In dorsal view, pronotum with angulate humeri; sides of promesonotum converging posteriorly; sides of propodeum subparallel but bulging slightly anterior to propodeal spiracle; stout propodeal spines slightly divergent through their entire length; mesosoma, petiole and postpetiole dorsally reticulate with interstitial punctulae; first gastral segment(= 4th abdominal) punctulate. Head with evenly distributed short, blunt erect hairs that are shorter than distance between them; scape with suberect hairs; short, blunt erect hairs sparsely distributed over rest of body. Body distinctly bi-colored; body yellow to orange except for brown antennal club, legs, distal and lateral edges of first gastral segment, and gastral segments 2-5. Diagnosis of male paratype (Figures 5-15): Alate; approximately as long as worker, but more gracile. In full-face view, head longer than broad; sides of head diverging posteriorly, posterior head width behind compound eyes about ¾ wider than anterior head width; ocelli not unusually large (compared with images of male R. palauensis, M.R.Smith, 1953), width of ocelli subequal to distance between lateral ocellus and median ocellus; lateral ocelli separated by about 2X width of median ocellus; compound eye large, convex, occupying about 2/3 side of the head; posterior margin of head medially straight, laterally with lobes; antenna long, subfiliform, with 13 segments (Figures 6 and 7); length of antennomeres (one male measured) antennal scape, 0.08 mm; antennomere 2, 0.04 mm; antennomere 3, 0.27 mm; antennomere 4-7, range = 0.12-0.19 mm; antennomere 8, 0.23 mm; antennomere 9-13, range = 0.13-0.18 mm; antennomere 4-7 slightly and gently broadened distally, such that the basal end of succeeding segment is narrower than the distal end; antennomere 3-7 broader than antennomere 8-13; clypeus broadly projecting anteriorly, forming a rounded obtuse angle; mandible triangular, well-developed and functional; masticatory margin with 6 sharp triangular teeth; apical tooth longest, about 2X longer than preapical tooth; tooth 4 smallest; rest of teeth subequal; palp formula 5:3.
 * Description of worker.