Difference between revisions of "Keys to Oriental Region Leptogenys chinensis group species"

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(Created page with "Based on Wachkoo et al. (2018) and modified from Xu & He (2015) ''Leptogenys chinensis'' forms a species group with closely related species having little morphological change...")
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Revision as of 03:12, 7 October 2019

Based on Wachkoo et al. (2018) and modified from Xu & He (2015)

Leptogenys chinensis forms a species group with closely related species having little morphological changes Wilson (1958), Sarnat and Economo (2012). From the Oriental region, there are currently 9 species belonging to the L. chinensis group. The group is diagnosed by having edentate masticatory margin of the mandible, smooth body surface, elongate antennae and metallic green cuticle.

Contents

1

  • Petiolar node strongly elongate in lateral view, about 1.5 times as long as high. . . . . . 2
  • Petiolar node moderately to weakly elongate in lateral view, less than 1.2 times as long as high. . . . . . 3

2

return to couplet #1

  • Antennal scape relatively shorter, surpassing posterior head corner by about two fifths of its length. Petiolar node elongate trapezoidal in lateral view, with very short but distinct anterior margin. Body colour reddish-brown. Relatively smaller species with total length 6.5-7.0 mm . . . . . Leptogenys assamensis
  • Antennal scape very long, surpassing posterior head corner by half of its length. Petiolar node triangular in lateral view, without anterior margin. Body colour black. Large species with total length 13.0-13.5 mm. . . . . . Leptogenys pangui

3

return to couplet #1

  • Petiolar node moderately elongate, as long as high or distinctly longer than high in lateral view. . . . . . 4

  • Petiolar node weakly elongate, distinctly higher than long in lateral view, about 1.3-1.4 times as high as long. . . . . . 8

4

return to couplet #3

  • Clypeus truncated at apex. Larger species with total length 8-11 mm. . . . . . 5
  • Clypeus convex at apex. Smaller species with total length 4.5-7.0 mm. . . . . . 7