Observations on the Biology and Anatomy of Myerslopiidae (Hemiptera, Membracoidea)

Figure 6

Secretory cells in the Malpighian tubules of Mapuchea chilensis. ((a)–(d)) Cells in the tubules of a 3rd instar nymph. (a) A single secretory cell (its nucleus marked by an asterisk) among excretory cells. (b) The same cell, closeup. (c) Contact between a secretory and an excretory cell; arrowheads point at the junction. Note secretory granules in the tubule lumen. (d) Secretory vacuoles with granules and additional particulate material. Arrowheads point at cisternae of endoplasmic reticulum. ((e)–(h)) Cells in the tubules of an adult. (e), (f) Secretory vacuoles variably loaded with granules. (g), (h) Golgi regions with developing granules. lm: tubule lumen.

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