Species;Soldier;Worker "Coloration of head capsule";Rostrum;"Anterior margin of pronotum";Antennae;"Left mandible" "L. longipes";"Sepia brown to blackish";"Apical 2/3 lighter & basal1/3 darker";"Nearly straight";"4th segment longer than 5th";"3rd marginal tooth moderately protruding from cutting edge" "L. kistneri";"Pale brown to dark brown";"Apical 2/3 darker and basal 1/3 lighter";"Strongly indented in the middle";"4th to 6th segments almost equal in length";"3rd marginal tooth weakly protruding from cutting edge"