Anochetus bytinskii

Distribution based on Regional Taxon Lists
Palaearctic Region: Israel.

Nomenclature

 *  bytinskii. Anochetus bytinskii Kugler, J. & Ionescu-Hirsch, 2007: 289 (w.q.m.) ISRAEL.

Worker
TL 5.83–6.98, HL 1.42–1.61, HW 1.21–1.38, SL 1.22–1.41, EL 0.18–0.22, ML 0.75–0.87, AL 2.00–2.23, pNW 0.65–0.74, mNW 0.36–0.47, PL 0.34–0.42, PNH 0.26–0.36, GL 1.41–2.00, G2W 0.76–0.92, pTbL 0.96–1.13, CI 84.2–87.7, SI 97.5–105.7, EI 11.8–14.8, MI 50.3–56.8, PI 72.0–84.7, PNI 84.4–106.3, GI 93.9–100.0 (N = 46).

Head. Vertex deeply concave; shallow depression in front of rounded nuchal carina; median furrow absent, except smooth and shiny strip that enlarges in shallow depression at level of posterior margin of orbital fossa. Eye with 8–11 ommatidia across greatest diameter; ocelli absent. Scape slightly curved, barely reaching or slightly surpassing occipital lobe; funiculus 11-jointed, second segment L/W (length-width ratio) 1.9–2.3, about equal to third and fourth segments. Mandible slender, W/L 0.23– 0.27, broadened at distal half; medial edge with 2 nearly straight margins extending to semicircular preapical excision; ventral margin with series of 6–11 distinct, rounded denticles followed distally by 3–4 denticles fused into crenulated laminar process; denticles hidden from view by dorsal margin of mandible when head in “full-face” view and mandibles closed.

Mesosoma. Slender, pNW/AL 0.31–0.35, with well-marked pro-mesonotal and meso-metanotal sutures; pronotum sub-pyriform; mesonotal disk convex, wider than long, W/L 2.00–2.79; propodeal dorsum straight to slightly depressed transversely behind metanotal spiracle, narrow, smoothly rounded into declivity; no traces of propodeal angles or teeth; declivity slightly convex in transversal plane.

Petiole: distinctly longer than wide. Petiolar node triangular in lateral view, about as high as long, with rounded apex. In dorsal view, contour of base anteriorly ogival, posteriorly straight, with median concavity (posterior face flat, with feeble vertical sulcus); dorsal margin more or less compressed transversely – apex with distinctly transverse summit only in four of the largest specimens. In anterior view laterally arcuate with bluntly rounded apex.

Gaster. Sub-cylindrical, weakly constricted between first 2 segments; first gastric segment narrower than second in 39 out of 41 examined specimens, and about as broad as long.

Sculpture. Head punctulate, smooth and shiny except frontal striation; striae fine but distinct, medially 0.20–0.28 mm long; striae fan out posterolaterally, extending just posterior to frontal carina, and to level of posterior margin of compound eye, laterally entering antennal hollow but not exceeding posterior and lateral margins. Pronotum mostly smooth and shiny; cervix distinctly transversely striate with curved ruga, and posterior to ruga few fine, superficial striae arched parallel to margin; laterally smooth and shiny, finely punctuate; disc with scattered and coarse punctuation in 34 of 46 specimens, superficially and patchily rugo-striate toward margins in concentric pattern in other 12 specimens. Mesonotal disc crossed by up to 13 fine striae, although in 27 specimens anterior half more or less shagreened or striolate and strongly shiny. Dorsum of propodeum patchily rugo-striate and/or vermiculate on anterior third, posteriorly superficially cross-striate (11–16 striae per 0.2 mm); 2–11 striae present toward base of declivity; striae usually visible only in certain illumination, but in six specimens striation distinctly visible on propodeal dorsum and declivity, whereas in eight specimens striae too superficial to be counted; propodeum laterally with oblique striae. Mesopleuron and metapleuron smooth and shiny; ventral extremity of metapleuron with few oblique, strong rugae. Gaster and coxae smooth and shiny, sparsely punctulate. Antenna and mandible fine and densely punctulate.

Pilosity. Fine. Longest hairs (L 0.1 – 0.2 mm) abundant and decumbent on gaster, sparse and erect to suberect in bucal region and on coxae, absent on mesosoma, except one suberect hair on pronotal disk. Shorter hairs (L 0.04 – 0.10 mm) fairly abundant on head and thorax, sparse on propodeum and first gastric segment, obsolescent caudad; these hairs appressed to subappressed on most of head, pronotum and propodeum, erect on frontal carina, decumbent to erect on mesonotum, decumbent on gaster. Appendages covered by even shorter, appressed to decumbent pubescence. Propodeum nearly glabrous in few specimens.

Color. Living individuals yellow with orange tint. Dry specimens brownish yellow, lighter on mesosoma and coxae; gaster with brownish shading; epistoma, tip of mandible and leg brown.

Queen
TL 6.63, HL 1.37, HW 1.27, SL 1.22, EL 0.23, ML 0.71, AL 2.13, pNW 0.69, mNW 0.49, PL 0.41, PNH 0.35, GL 2.27, G2W 1.28, pTbL 0.97, CI 93.1, SI 96.1, EI 16.6, MI 52.2, PI 96.5, PNI 109.1, GI 96.9 (N = 1).

Dealate specimen, size (TL) of average workers, although with protibia length similar to that of smallest workers.

Head. Slightly shorter and markedly broader than in worker with similar tibia length. Eye with 13 ommatidia across greatest diameter; ocelli absent. Mandible as in worker, W/L 0.25.

Mesosoma. More robust than in worker, but with similar proportions; scutum W/L 1.32; scutellum hexagonal, with rounded edges, convex, L 0.19, W 0.27 mm; dorsellum elliptical, L 0.08, W 0.20 mm. Remnants of wings visible as dark brown stumps.

Petiole. Oval, broad, W 0.37 mm, only slightly longer than wide, node scale-like, more compressed fronto-caudally and higher relative to length than in workers.

Gaster. Longer and wider than in largest worker, sub-cylindrical, weakly constricted between first two segments, first tergite distinctly broader than long.

Sculpture. Head as in worker; pronotal and mesonotal disc and scutellum smooth and shiny. Propodeum laterally with oblique striae and coarse punctuation, declivity with 15 fine, transverse striae. Mesopleuron and metapleuron smooth and shiny. Gaster, coxae and head laterally shiny and sparsely punctulate.

Pilosity. More abundant on mesosoma, as compared to workers, most hairs decumbent to suberect; on gaster predominantly suberect pilosity in contrast to mainly decumbent pilosity of workers.

Color. Similar to workers.