- sternaulus
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n.; pl. -li, -lices [Gr. sternon, chest; aulos, tube](ARTHROPODA: Insecta)In ichneumonid Hymenoptera, a horizontal groove on the lower edge of the mesopleurum from the prepectal carina backwards, sometimes reaching the base of the middle coxa; the dividing line between the mesosternum and mesopleurum.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.