Key to Tetramorium semilaeve complex males

This male key is based on: Salata, S. and L. Borowiec. 2017. Species of Tetramorium semilaeve complex from Balkans and western Turkey, with description of two new species of (Hymenoptera: Formicidae: Myrmicinae). Annales Zoologici (Warsaw). 62:279–313. (DOI:10.3161/00034541ANZ2017.67.2.008).

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Tetramorium

1

• Top of inner margin of paramere, before apical denticle, straight with dentiform plate distinctly extending beyond the sharp edge of paramere . . . . . Tetramorium semilaeve

• Top of inner margin of paramere, before apical denticle, straight without distinct, dentiform plate or with narrow lamella . . . . . 2

2

return to couplet #1

• Top of inner margin of paramere, before apical denticle, straight without narrow lamella; scutum, in central part, smooth and devoid of longitudinal striation . . . . . 3

• Top of inner margin of paramere, before apical denticle, straight with narrow lamella; scutum, in central part, with longitudinal striation . . . . . 4

3

return to couplet #2

• Head less regularly rounded behind eyes, slightly trapezoidal; clypeus with circular rugosities or at least strongly converging; frons microreticulate, dull or with only narrow smooth area; area between eye and ocelli with high oblique rugosities; genitalia, in profile, deeply constricted before apex, with slightly longer and sharper apical angle; top of inner margin of paramere with sparse, erect setae . . . . . Tetramorium bellerophoni

• Head regularly rounded; clypeus with parallel rugosities at most with only two medial ridges partly convergent; frons partly smooth and shiny; area between eye and ocelli partly without rugosities, only with dull microreticulation; genitalia, in profile, less constricted before apex with slightly shorter and less sharp apical angle; top of inner margin of paramere without setae . . . . . Tetramorium galaticum

4

return to couplet #2

• Propodeum with distinct angulations in position of propodeal teeth, Maghreb . . . . . Tetramorium atlante

• Propodeum regularly rounded to finely angulate in position of propodeal teeth, Eastern

Mediterranean species . . . . . 5

5

return to couplet #4

• Body black; ML<1.83; FL/FR>1.15; head with convex sides, occipital margin slightly rounded, occipital corners widely rounded; scutum in anterior part and laterally smooth and shiny . . . . . Tetramorium hippocratis

• Body black brown, ML>1.83; FL/FR <1.15; head slightly trapezoidal, with almost straight occipital margin and more or less rounded occipital corners; scutum in anterior part mostly with distinct striation . . . . . Tetramorium kephalosi