Tyrannomyrmex, Fernandez, 2003

Sadasivan, Kalesh & Kripakaran, Manoj, 2017, A new species of Tyrannomyrmex Fernández 2003 (Formicidae, Myrmicinae, Solenopsidini) from Western Ghats, Kerala, India, Zootaxa 4344 (2), pp. 261-276 : 275

Key to known species of Tyrannomyrmex based on worker caste

( Fig.12 )

1. In lateral view, petiolar peduncle clearly differentiated from the node, peduncle forming anterior half of the petiole; foveae dense and contiguous on side of pronotum. Agasthyamalais, Kerala, India..................................... T. dux

- Petiolar peduncle not clearly differentiated from the node......................................................2

2. Foveae on lateral pronotum widely separated, sparse and irregularly placed; inter-foveal distance more than diameter of foveae ( Fig. 12 ); erect hairs restricted to the anterior pronotum, rest of the mesosoma devoid of any hair. Peninsular Malaysia ... T. rex

- Foveae on lateral pronotum more closely spaced, denser and more regular; inter-foveal distance less than the diameter of the individual foveae; whole mesosoma bearing hairs............................................................3

3. Foveae on lateral pronotum contiguous ( Fig. 12 ); whole mesosoma covered in erect hairs. Sri Lanka............ T. legatus

- Foveae on lateral pronotum never contiguous, inter-foveal distance less than foveal diameter but more than the radius of the individual foveae; erect hairs occupying the entire pronotum and grading to decumbent and appressed towards the propodeum. Periyar, Kerala, India............................................................................... T. alii

Figures

FIGURE 12. Foveae on lateral pronotum: A— T. rex, B— T. alii and C— T. legatus.