Psyche: A Journal of Entomology / 2010 / Article / Fig 2

Research Article

Morphology of the Prosternal Glands of Heliconius erato (Lepidoptera: Nymphalidae)

Figure 2

Schematic representation of fifth instar larval prosternal glands of Heliconius erato phyllis, from an antero-dorsal internal view, when in situ (a) and during extrusion of the prosternal sac (b). Impair and paired glands are shown in stippled red and solid blue, respectively. Open arrows indicate the direction of the internal hemostatic pressure and the respective movement of the prosternal sac. Impair and paired glandular openings are indicated by one asterisk and open arrowheads, respectively. (L1) prothoracic leg; (Rp1) proximal retractor muscle of the prosternal sac; (Rp2) distal retractor muscle of the prosternal sac. Scale bar = 50 μm.
892960.fig.002a
(a)
892960.fig.002b
(b)

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