Key to Anochetus of India

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This key to Indian workers of Anochetus is based on Bharti & Wachkoo (2013), with the addition of Anochetus daedalus by Abdus Shakur.

1

  • Pronotal disc (at least a broad central field) and all of first gastral tergum smooth and shining when clean, with at most fine, spaced punctures => 2
  • Pronotal disc coarsely striate or punctate-rugulose; smooth interspaces, if any, narrow and usually coarsely punctate; first gastral tergum rugulose, striate or smooth, with or without coarse punctures => 7

2

return to couplet #1

  • Inner mandibular margin bearing teeth which gradually reduce in size => Anochetus daedalus
Anochetus daedalus zsi-wgrs-ir-inv-3286 p 1 high.jpg
  • Inner mandibular margin smooth, without teeth => 3

3

return to couplet #2

  • Modest or small sized, lightly pigmented species with reduced eyes: maximum measurable compound eye length < 0.15 mm, their greatest diameter < maximum width of a mandible => 4
  • Large species with large eyes: maximum measurable eye length>0.25 mm and>maximum width of a mandible => 6

4

return to couplet #3

  • Propodeal angles produced as a pair of short teeth => 5
  • Propodeal angles unarmed => Anochetus cryptus
Anochetus cryptus antweb1008021 p 1 high.jpg

5

return to couplet #4

Anochetus pupulatus casent0217512 p 1 high.jpg
Anochetus myops casent0281882 p 1 high.jpg

6

return to couplet #3

  • Petiolar node axially compressed above; anterior slope concave, and summit rather bluntly rounded as seen from the side, but strongly transverse as seen from above; body with very numerous short, fine, erect hairs; appressed pubescence scarcely developed on head, mesosoma, petiole and gaster; with head in full face view, antennal scapes surpass posterior borders of occipital lobes by at least an apical scape width => Anochetus rufus
Anochetus rufus casent0902447 p 1 high.jpg
  • Petiolar node thick, erect, barrel-shaped; anterior slope convex, summit broadly rounded in both directions and only slightly broader than long; body with few or no erect hairs, except on apex and underside of gaster (0–9 standing hairs on mesosoma and first gastral tergum), but with abundant and conspicuous appressed pubescence; with head is full-face view, antennal scapes do not reach, or at least do not distinctly surpass, posterior borders of occipital lobes => Anochetus sedilloti
Anochetus sedilloti sam-hym-c002796 profile 1.jpg

7

return to couplet #1

  • Petiolar node in profile thin, tapered to a very narrowly rounded, or even sharp, apical scale-like part near its base not more than 0.20 mm long => 8
  • Petiolar node in profile thick, with broadly rounded summit, about as thick as near base of erect part of node => 10

8

return to couplet #7

Anochetus graeffei casent0172373 head 1.jpg
Anochetus graeffei casent0172373 profile 1.jpg
  • HL+ML>1.50 mm; maximum measurable eye length>0.15 mm => 9

9

return to couplet #8

  • Frons smooth and shining, the frontal striations extending only a short distance beyond the level of eyes; body yellowish; EL>0.25 => Anochetus yerburyi
Anochetus yerburyi casent0281884 h 1 high.jpg
Anochetus yerburyi casent0281884 p 1 high.jpg
  • Frontal striation reaching all the way to nuchal carina, or most of the way; body red brown; EL < 0.25 => Anochetus validus
Anochetus validus antweb1008023 p 1 high.jpg

10

return to couplet #7

  • First gastral tergum densely and more or less opaquely sculptured over at least the anterior half => 11
  • First gastral tergum smooth and shinning, with only scattered, fine piligerous punctures => Anochetus madaraszi
Anochetus madaraszi casent0281885 p 1 high.jpg

11

return to couplet #10

  • Anterodorsal margin of petiolar node slightly produced anteriad, overhanging the anterior slope, which tends to be concave; mesosoma red; first gastral tergum black or piceous, coarsely punctate-striate and opaque to near posterior border => Anochetus kanariensis
Anochetus kanariensis casent0902448 p 1 high.jpg
  • Anterodorsal margin of petiolar node broadly rounded, like posterodorsal margin; anterior slope of node convex or straight as seen from the side; mesosoma, petiole and gaster piceous or blackish, often with bluish opalescence; the first gastral tergum with punctate-rugulose sculpture diminishing to nearly smooth and shinning on posterior half or third of the segment => Anochetus obscurior
Anochetus obscurior casent0281883 p 1 high.jpg

References