vitellarium

From New Latin, from vitellus (“yolk”) + -ārium (“place associated with”); equivalent to vitello- +‎ -arium.

vitellarium (plural vitellaria)

1. A type of gland, in flatworms and similar organisms, that secretes yolk.
   • 1988, K. G. Adiyodi, Reproductive Biology of Invertebrates, Accessory Sex Glands, page 41:

     In the hymenolepid cestode Fimbriaria fasciolaris, the vitellaria and uterus are continuous throughout the strobila.

   • 2015 July 8, “Convergent Reduction of Ovariole Number Associated with Subterranean Life in Beetles”, in PLOS ONE‎, →DOI:

     Germarium and vitellarium are distinct and the latter contains one or two small, immature basal oocytes.

• vitellarial / vitellarian
• vitellocyte