Difference between revisions of "Key to Australian Proceratium Species"

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The following key to Australian ''[[Proceratium]]'' is based on Baroni Urbani & de Andrade (2003)<ref name="Ref1">Baroni Urbani, C., de Andrade, M.L. (2003) The ant genus ''Proceratium'' in the extant and fossil record (Hymenoptera: Formicidae). Museo Regionale di Scienze Naturali, Monografie, 36, 1–492.</ref>.
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The following worker key to Australian ''[[Proceratium]]'' is based on Baroni Urbani & de Andrade (2003)<ref name="Ref1">Baroni Urbani, C., de Andrade, M.L. (2003) The ant genus ''Proceratium'' in the extant and fossil record (Hymenoptera: Formicidae). Museo Regionale di Scienze Naturali, Monografie, 36, 1–492.</ref>.
 
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Revision as of 15:13, 7 October 2013

The following worker key to Australian Proceratium is based on Baroni Urbani & de Andrade (2003)[1].

1

  • Petiolar node low and rounded; leading edge of clypeus projecting forward and the insertions of the antennae well back from the edge => 2
  • Petiolar node high and box-like; leading edge of clypeus straight and the insertions of the antennae very close to the edge => 3

2

  • Postpetiole concave medially and gently lobate laterally; erect hairs on sides of head sparse and short (length less than the maximum width of the scape) => Proceratium cavinodus
  • Postpetiole flat medially and convex laterally; standing hairs on the sides of head abundant and long (length greater than the maximum width of the scape) => Proceratium stictum

3

  • When viewed from above, petiole more than 1.5 times wider than long; smaller, total length less than 2.63mm => Proceratium pumilio
  • When viewed from above, petiole at most 1.5 times wider than long; almost always larger (total length greater than 2.64mm, if smaller then PeW less than 0.27mm) => 4

4

  • Erect hairs on body short; scapes relatively short (SI less than 0.70) => 5

5

  • Postpetiole smooth or at most with very weak sculpturing => 6
  • Postpetiole with strong and dense sculpturing => 7

6

  • Central region of leading edge of clypeus projecting forward of the lateral regions; long hairs on gaster sparse and suberect; head relatively long and narrow (cephalic index less than 0.93), the scape relatively long (scape index greater than 0.68) => Proceratium gracile
  • Leading edge of clypeus essentially flat across its entire width; long hairs on gaster denser, subdecumbent and decumbent; head broader and nearly square (cephalic index more than 0.94), the scape relatively short (scape index less than 0.65) => Proceratium robustum

7

  • Mesosoma strongly convex in profile, the propodeum lower than the mesonotum and rounded; propodeal sides with a tooth; head relatively narrow (cephalic index less than 0.85), the sides more or less parallel; body larger (total length about 3.72mm) => Proceratium gigas
  • Mesosoma more elongate, the propodeum only slightly lower than the mesonotum and its dorsal face flatter; propodeal sides at most denticulate; head relatively wide (cephalic index greater than 0.89), the sides tapering inwards towards the mandibles; body smaller (total length less than 3.5mm) => Proceratium australe

References

  1. Baroni Urbani, C., de Andrade, M.L. (2003) The ant genus Proceratium in the extant and fossil record (Hymenoptera: Formicidae). Museo Regionale di Scienze Naturali, Monografie, 36, 1–492.