Diolcus irroratus (Fabricius)

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 : 8

Diolcus irroratus (Fabricius)

Ostiole closer to metacoxal cavity than to lateral margin of metapleuron ( Fig. 10a ); ostiole round, oriented ventrolaterally, visible in lateral view; lateral margin of ostiolar plate elevated; peritreme reduced, directed laterally ( Fig. 10b ), median furrow obsolete; peritremal surface with cylindrical microsculptures ( Fig. 10c ). Evaporatorium well developed on meso- and metapleuron; on metapleuron, evaporatorium completely covering ostiolar plate and reaching between coxal cavities, outer margin of metapleural evaporatorium convex; on mesopleuron, well developed on mesepimeron; evaporatorium with several minute sensilla ( Fig. 10d ); mushroom bodies irregular, alveoli with several trabeculae. Metathoracic spiracle narrow; metapleural margin of spiracle with several setae; processes of the filter system of regular diameter and conical, processes smooth ( Fig. 10e ).

Figures

Fig. 10 External scent efferent system of Diolcus irroratus. a Meso- and metapleuron. b Peritreme. c Peritremal surface. d Detail of evaporatorium. e Spiracular filter system. Bars a 500 µm; b 100 µm; c 5 µm; d, e 20 µm