Third instar larvae expressing CG16854EY09123 under the control of Scer\GAL4Pxn.PS have an increased number of sessile hemocytes. The number of hemocytes in circulation is also increased. The dorsal sessile hemocyte department is disrupted. Sessile hemocytes do not accumulate along the dorsal vessel but spread through the cuticle. The lymph gland is not enlarged. Hemocyte shape is normal.