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Quarterly Journal of Microscopical Science, Vol s2-76, 89-105, Copyright © 1934 by Company of Biologists

Memoirs: Notes on the Structure and Development of the Female Genital System in Dasyneura leguminicola Lint. (Cecidomyidae-Diptera)

MARGOT E. METCALFE Ph.D.1

1 Fellow of the University of Wales. Entomology Department Rothameted Experimental Station

1. Genitalia of an appendicular nature are absent in D. leguminicola, the terminal abdominal segments being modified to form a tubular retractile ovipositor.

2. Apart from the ovaries and a portion of the paired oviducts, the efferent system is unpaired and ectodermal in origin.

3. The gonopore is posterior to the ninth sternite, and is derived from the primitive spermathecal invagination as in the Coleoptera.

4. The uterine rudiment is present during the early stages of development, but later becomes closed over, discharging its contents into the duct derived from the spermathecal rudiment.






© The Company of Biologists Ltd 1933