costal process

costal process

[′käst·əl ¦präs·əs]
(anatomy)
An anterior or ventral projection on the lateral part of a cervical vertebra.
(embryology)
An embryonic rib primordium, the ventrolateral outgrowth of the caudal, denser half of a sclerotome.
References in periodicals archive ?
4] vein terminating above the apex and the male genitalia possessing a digitate costal process.
7-9) with uncus continuous from tegumen; tuba analis extending beyond uncus, connected with uncus process dorsally to form scaphium; subscaphium present; valvae asymmetrical, a costal process present only on one valva; phallus without coecum; ductus ejaculatorius arising dorsally; cornuti present.
Valvae asymmetrical, left valva spatulate, densely setose on inner surface, terminal part of ventral margin slightly extended, with a dentiform, short process; right valva triangular, 2/3 as long as left valva, densely setose on ventral half of inner surface, with a dentiform, short process apically, costa convex at basal 1/3; costal process stout, bent at basal 1/3, broadened to apex, terminal 2/3 round dorsally, straight ventrally, obtuse apically.
cassiterota has a golden yellow color of the forewing, a fringe that is metallic colored at distal half, and male genitalia with a costal process of the valva.