PLATE 3.40. DRONE GENITALIA

TOP LEFT. Vestibulum (bottom of the field). On either side of the vestibulum are the lateral horns or cornuti (arrows). The principal feature is the cervix of the tubelike penis. Chevronlike sclerites cover the ventral wall of the cervix. ( x 3 1)

MIDDLE LEFT. Base of the genitalia, located immediately below the field in the top left micrograph. The ventral plate of the vestibulum of the penis is covered with flexuous setae. On both sides of the vestibulum are the cornuti (external genital lobes). (x 31)

BOTTOM. Tufts of spicules on the medial wall of the cervix of the penis. (x 441)

TOP RIGHT. Higher magnification of the wall surface of the male genital duct. (x 300)

MIDDLE RIGHT. Surface of the horn (cornutus). The dorsal and lateral surfaces are papillate while the ventral surface is relatively smooth with longitudinal folds. (x 100)