n.1.The state of being trilobate.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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Member of the subfamily Erecinae characterized by: abdominal shield with undivided area I, areas I-III with pairs of spines, area V and free tergites I-III with rows of spines; palpal femur without apicomedial spines; coxa IV unarmed; penis spatula-shaped, with distal part of the trunk enlarged and penis head with a frontal trilobation.