Polytes lineolatus (Dallas)

Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), Zoomorphology 136, pp. 1-16 : 11

Polytes lineolatus (Dallas)

Ostiole closer to metacoxal cavity than to lateral margin of metapleuron ( Fig. 18a ); ostiole round, oriented ventrolaterally, visible in lateral view; lateral and posterior margins of ostiolar plate elevated; peritreme obsolete ( Fig. 18b ), median furrow obsolete. Evaporatorium well developed on meso- and metapleuron; on metapleuron, evaporatorium completely covering ostiolar plate and reaching between coxal cavities, outermargin of metapleural evaporatorium convex; on mesopleuron, well developed on mesepimeron; evaporatorium with minute sensilla ( Fig. 18c ); mushroom bodies irregular, alveoli with several trabeculae. Metathoracic spiracle wide; metapleural margin of spiracle with several setae; processes of the filter system of irregular diameter, processes spiny ( Fig. 18d ).

Figures

Fig. 18 External scent efferent system of Polytes lineolatus. a Meso- and metapleuron. b Peritreme. c Detail of evaporatorium. d Spiracular filter system. Bars a 500 µm; b 100 µm; c, d 20 µm