Line B was determined between mandibular canal and mandible's lingual cortical bone; and Line C was performed between mandibular canal and the base of mandible.
Distance between mandibular canal and buccal cortical (V), lingual cortical (L) and base of mandible (BM) in retromolar space at right (A) and left side (B).
Multisection spiral computed tomography was performed (Light Speed Pro 16, General Electrics, USA) of the area from infraorbital region to the base of mandible.
Primarily survey scanning of all area from infraorbital region to the base of mandible was done and the area of 1276x1276 mm was examined within slice thickness of 1.
Mandibular foramen to base of mandible
(MFMB): Verti cal line from the ventral limit of the mandibular foramen to the base of the mandible.
The morphology of the shaft and base of mandibles
From the size distribution of total body length, maximum width of head, Length of head from side base of mandibles
and maximum width of head, indicating that, large worker is preceded by two larval instars (first instar larva and second instar large larva) followed by four successive molts, to become a large mature worker.
For each individual soldier, the following ten parameters were measured: i) length of head to side base of mandibles
ii) width of head to side base of mandibles
iii) width of head at the posterolateral ends of antennal carinae iv) maximum width of head v) length of left mandible vi) tooth of left mandible from tip vii) length of Pronotum viii) width of Pronotum ix) length of Postmentum x) width of Postmentum.
0 [micron]m), more concentrated near base of mandibles