If unable to drop from the head, the puparium may be positioned within the receptacle protruding through a central dark-ringed hole. This species was first collected at CPBS in 1999. It is not commonly collected in flowerheads older than 25 days, indicating a shorter time to eclosion than G. diffusa . Also, more than one puparium from this species can be found in an inflorescence at our site. It is the smallest of our tephritieds.
Several larvae can occur together in a flowerhead.
Larvae feed within undeveloped ovaries, often completely consuming the floret before the seed is fertilized. The puparium of N. finalis is light brown and around 3.5 mm in length. F.L. Blanc, and A.L. Norrbom. 1993. T.D. Cadatal, and G. A. Cavender. Kamali, K., and J.T. Schultz.