Key to Lophomyrmex of India

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This worker key is based on: Sheela, S. and S.N. Ghosh. (2008). A new species of Lophomyrmex Emery (Hymenoptera: Formicidae) from India with a key to Indian species. Biosystematica. 2:17–20.

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1

  • Anterolateral angles of pronotum with well defined teeth . . . . . 2
  • Anterolateral angles of pronotum without teeth, only sharply margined . . . . . 4

2

return to couplet #1

Lophomyrmex quadrispinosus casent0281611 h 1 high.jpg
Lophomyrmex quadrispinosus casent0281611 p 1 high.jpg
  • Pronotal teeth large, sculpture not as distinct as the alternate . . . . . 3

3

return to couplet #2

  • SI and TI=100; propodeal spines slightly curved upward, in profile . . . . . Lophomyrmex kali
Lophomyrmex kali casent0901264 h 1 high.jpg
Lophomyrmex kali casent0901264 p 1 high.jpg
  • SI and TI < 100; propodeal spines straight or feebly curved downwards, in profile . . . . . Lophomyrmex birmanus
Lophomyrmex birmanus casent0178543 head 1.jpg
Lophomyrmex birmanus casent0178543 profile 1.jpg

4

return to couplet #1

  • Distance between eyes and base of mandibles equal to or greater than 1.5x eye length . . . . . Lophomyrmex bedoti
Lophomyrmex bedoti casent0178542 head 1.jpg
Lophomyrmex bedoti casent0178542 profile 1.jpg
  • Distance between eyes and base of mandibles less than 1.5x eye length . . . . . 5

5

return to couplet #4

Lophomyrmex changlangensis.jpg
  • Propodeal spines not very long; distance between eyes and base of mandibles 1.3x eye length . . . . . Lophomyrmex ambiguus
Lophomyrmex ambiguus casent0106225 h 1 high.jpg
Lophomyrmex ambiguus casent0106225 p 1 high.jpg