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Coptochilus ferrugineus Amyot & Serville Ostiole closer to metacoxal cavity than to lateral margin of metapleuron (Fig. 8a); ostiole guttiform, oriented ventrolaterally, visible in lateral view; lateral and posterior margins of ostiolar plate elevated; peritreme spout-shaped, directed laterally (Fig. 8b), median furrow well developed; peritremal surface with cylindrical microsculptures (Fig. 8c). Evaporatorium well developed on meso- and metapleuron; on metapleuron, evaporatorium covering most of ostiolar plate and reaching between coxal cavities, outer marginof metapleural evaporatorium convex; on mesopleuron, well developed on mesepimeron; evaporatorium punctate (Fig. 8d) and with several minute sensilla (Fig. 8e); mushroom bodies irregular, alveoli with several trabeculae. Metathoracicspiracle wide; metapleural margin of spiracle with several setae; processes of the filter system of regular diameter, processes spiny and connected to each other by few lateral expansions (Fig. 8f)., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 7, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721

Chelyschema trinotata (Walker) Ostiole closer to metacoxal cavity than to lateral margin of metapleuron (Fig. 7a); ostiole guttiform, oriented ventrolaterally, visible in lateral view; lateral and posterior margins of ostiolar plate elevated; peritreme reduced, directed laterally (Fig. 7b), median furrow obsolete; peritremal surface smooth (Fig. 7c). Evaporatorium well developed on meso- and metapleuron; on metapleuron, evaporatorium covering most of ostiolarplateandreachingbetweencoxalcavities, outermargin of metapleural evaporatorium convex; on mesopleuron, well developed on mesepimeron; evaporatorium with several minute sensilla (Fig. 7d); mushroom bodies irregular, alveoli with several trabeculae. Metathoracicspiracle wide; metapleural margin of spiracle with several setae; processes of the filter system of irregular diameter, processes spiny (Fig. 7e)., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 6, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721

Agonosoma flavolineata Laporte Ostiole closer to metacoxal cavity than to lateral margin of metapleuron (Fig. 3a); ostiole elliptical, oriented ventrolaterally, visible inlateral view; lateraland posterior marginsof ostiolar plate elevated; peritreme groove-shaped, long, directed posterolaterally and apically curved anteriorly, parallel to surrounding pleuron (Fig. 3b), median furrow well developed; peritremal surface covered with smooth, flap-like microsculptures (Fig. 3c). Evaporatorium well developed on meso- and metapleuron; on metapleuron, evaporatorium covering most of the ostiolar plate and reachingbetweencoxal cavities, outermarginof metapleural evaporatorium convex and elevated; on mesopleuron, well developed on mesepimeron; evaporatorium with several minute sensilla (Fig. 3d); mushroom bodies irregular, alveoli with few trabeculae. Metathoracic spiracle wide; metapleural marginof spiraclewithseveral setae; processes of the filter system of irregular diameter, processes spiny (Fig. 3e)., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 4, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721

Chelycoris haglundi (Montandon) Ostioleinthemiddleof metapleuron (Fig. 6a); ostiole round, oriented ventrally, not visible in lateral view; lateral and posterior margins of ostiolar plate elevated; peritremespoutshaped, directed posterolaterally, elevated and parallel to surrounding pleuron (Fig. 6b), median furrow well developed; peritremal surface covered with ridged, scale-like microsculptures (Fig. 6c). Evaporatoriumwelldevelopedon meso- and metapleuron; on metapleuron, evaporatorium covering most of ostiolar plate and reaching between coxal cavities, outer margin of metapleural evaporatorium straight and elevated; on mesopleuron, well developed on mesepimeron, reaching posterolateral angle of mesopleuron but not extending on mesopleural lateral margin; evaporatorium punctate (Fig. 6d); mushroom bodies irregular, alveoli with several trabeculae. Metathoracicspiracle wide; metapleural marginof spiraclewith setae; processesof thefiltersystemof conical, processes spiny (Fig. 6e)., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 6, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721

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: 1-16, DOI: 10.1007/s00435-016-0330-y

Misippus spinolae (Signoret) Ostiole closer to metacoxal cavity than to lateral margin of metapleuron (Fig. 15a); ostiole round, oriented laterally, visible in lateral view; lateral and posterior margins of ostiolar plate leveled with remaining of metapleuron; peritreme obsolete (Fig. 15b), median furrow obsolete. Evaporatorium poorly developed on meso- and metapleuron; on metapleuron, evaporatorium surrounding ostiole, along the metapleural margin of spiracle, and reaching between coxal cavities; on mesopleuron, developed on mesepimeron along the spiracular margin and not reaching lateral margin of mesopleuron; evaporatorium punctate (Fig. 15c); mushroom bodies irregular, alveoli with few trabeculae. Metathoracic spiracle wide; processes of the filter system of regular diameter, processes smooth and connected to each other by lateral expansions (Fig. 15e)., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 10, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721

Tetyra antillarum Kirkaldy Ostioleinthemiddleof metapleuron (Fig. 22a); ostiole elliptic, oriented posterolaterally, visible in lateral view; lateral and posterior margins of ostiolar plate elevated; peritreme spout-shaped, directed laterally (Fig. 22b), median furrow obsolete; peritremal surface reticulate, with elevated ridges (Fig. 22c). Evaporatorium well developed on meso- and metapleuron; on metapleuron, evaporatorium completely covering ostiolar plate and reaching between coxal cavities, outer marginof metapleural evaporatorium convex; on mesopleuron, well developed on mesepimeron; evaporatorium with minute sensilla (Fig. 22d) and punctate (Fig. 22e); mushroom bodies irregular, alveoli with several trabeculae. Metathoracicspiracle wide; metapleural margin of spiracle with several setae; processes of the filter system of regular diameter, processes spiny (Fig. 22f)., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 13, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721

Orsilochides variabilis (Herrich-Schäffer) Ostioleinthemiddleof metapleuron (Fig. 16a); ostiole guttiform, oriented ventrolaterally, visible in lateral view; lateral and posterior margins of ostiolar plate elevated; peritreme spout-shaped, directed laterally (Fig. 16b), median furrow obsolete; peritremal surface reticulate, with elevated ridges (Fig. 16c). Evaporatorium well developed on meso- and metapleuron; on metapleuron, evaporatorium completely covering ostiolar plate and reaching between coxal cavities, outer margin of metapleural evaporatorium concave; on mesopleuron, well developed on mesepimeron; evaporatorium punctate (Fig. 16d); mushroom bodies irregular, alveoli with several trabeculae. Metathoracic spiracle wide; metapleural margin of spiracle with several setae; processes of the filter system of regular diameter, processes spiny (Fig. 16f)., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 10, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721

Coptochilus ferrugineus Amyot & Serville Ostiole closer to metacoxal cavity than to lateral margin of metapleuron (Fig. 8a); ostiole guttiform, oriented ventrolaterally, visible in lateral view; lateral and posterior margins of ostiolar plate elevated; peritreme spout-shaped, directed laterally (Fig. 8b), median furrow well developed; peritremal surface with cylindrical microsculptures (Fig. 8c). Evaporatorium well developed on meso- and metapleuron; on metapleuron, evaporatorium covering most of ostiolar plate and reaching between coxal cavities, outer marginof metapleural evaporatorium convex; on mesopleuron, well developed on mesepimeron; evaporatorium punctate (Fig. 8d) and with several minute sensilla (Fig. 8e); mushroom bodies irregular, alveoli with several trabeculae. Metathoracicspiracle wide; metapleural margin of spiracle with several setae; processes of the filter system of regular diameter, processes spiny and connected to each other by few lateral expansions (Fig. 8f).

Pachycoris torridus (Scopoli) Ostioleinthemiddleof metapleuron (Fig. 17a); ostiole guttiform, oriented ventrolaterally, visible in lateral view; lateral and posterior margins of ostiolar plate elevated; peritreme spout-shaped, directed laterally (Fig. 17b), median furrow obsolete; peritremal surface with disorganized, elevated ridges (Fig. 17c). 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 punctate (Fig. 17d); mushroom bodies irregular, alveoli with several trabeculae. Metathoracicspiracle wide; metapleural margin of spiracle with several setae; processes of the filter system of regular diameter, processes spiny (Fig. 17f)., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 11, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721

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)., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 8, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721

Acantholomidea porosa (Germar) Ostiole closer to metacoxal cavity than to lateral margin of metapleuron (Fig. 2a); ostiole elliptical, oriented ventrally, not visible in lateral view; lateral and posterior margins of ostiolar plate leveled with remaining of metapleuron; peritreme small, directed posterolaterally, elevated from surrounding pleuron (Fig. 2b), median furrow obsolete; peritremal surface covered with rugose, scale-like microsculptures (Fig. 2c). Evaporatorium poorly developed on meso- and metapleuron; on metapleuron, evaporatorium surrounding ostiole and peritreme and along the metapleural margin of spiracle, but not reaching between coxal cavities, outer margin of metapleural evaporatorium sigmoid; on mesopleuron, developedonmesepimeronalongthespiracular margin and on lateral margin of mesopleuron; evaporatorium punctate (Fig. 2d); mushroom bodies irregular, alveoli with few trabeculae.Metathoracicspiracle narrow; processesof the filter system of irregular diameter, processes spiny and connected to each other by lateral expansions (Fig. 2e)., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 4, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721

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)., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 11, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721

Tiridates rubrocinctus (Herrich-Schäffer) Ostioleinthemiddleof metapleuron (Fig. 23a); ostiole round, oriented ventrolaterally, visible in lateral view; lateral and posterior margins of ostiolar plate leveled with remaining of metapleuron; peritreme spout-shaped, directed laterally (Fig. 23b), median furrow developed basally; peritremal surface with spike-like microsculptures (Fig. 23c). Evaporatorium well developed on meso- and metapleuron; on metapleuron, evaporatorium completely covering ostiolar plate and reaching between coxal cavities, outer marginof metapleural evaporatorium convex; on mesopleuron, well developed on mesepimeron; evaporatorium punctate (Fig. 23d); mushroom bodies irregular, alveoli with several trabeculae. Metathoracic spiracle narrow; processes of the filter system of regular diameter, processes spiny (Fig. 23e)., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 13, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721

Galeacius martini Schouteden Ostiole closer to metacoxal cavity than to lateral margin of metapleuron (Fig. 12a); ostiole round, oriented ventrolaterally, visible in lateral view; lateral and posterior margins of ostiolar plate elevated; peritreme groove-shaped, directed laterally and apically curved anteriorly, parallel to surrounding pleuron (Fig. 12b), median furrow well developed; peritremal surface with rugose, scale-like microsculptures (Fig. 12c). 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 punctate (Fig. 12d); mushroom bodies irregular, alveoli with few trabeculae. Metathoracic spiracle wide; metapleural marginof spiracle with several setae; processes of the filter system of irregular diameter, processes spiny (Fig. 12e)., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 8, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721

Symphylus ramivitta Walker Ostiole closer to metacoxal cavity than to lateral margin of metapleuron (Fig. 21a); ostiole round, oriented ventrolaterally, visible in lateral view; lateral and posterior margins of ostiolar plate elevated; peritreme directed laterally, parallel to surrounding pleuron (Fig. 21b), median furrow developed basally; peritremal surface with scale-like microsculptures (Fig. 21c). 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 deeply punctate (Fig. 21a, d); mushroom bodies irregular, alveoli with several trabeculae. Metathoracic spiracle wide; processes of the filter system of regular diameter, processes spiny and connected to each other by lateral expansions (Fig. 21e)., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 13, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721

Crathis ansata (Distant) Ostiole closer to metacoxal cavity than to lateral margin of metapleuron (Fig. 9a); ostiole guttiform, oriented ventrolaterally, visible in lateral view; lateral margin of ostiolar plate elevated; peritreme ruga-shaped, directed laterally reaching anterolateral margin of ostiolar plate (Fig. 9b), median furrow developed basally; peritremal surface with scattered, spike-like microsculptures and minute sensilla (Fig. 9c). Evaporatorium well developed on meso- and metapleuron; on metapleuron, evaporatorium completely covering ostiolar plate and reaching between coxal cavities, outer margin of metapleural evaporatorium straight; on mesopleuron, well developed on mesepimeron; evaporatorium with several minute sensilla (Fig. 9d); mushroom bodies irregular, alveoli with several trabeculae. Metathoracic spiracle wide; processes of the filter system of regular diameter, processes spiny (Fig. 9e)., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 7, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721

Lobothyreus lobatus (Westwood) Ostiole closer to metacoxal cavity than to lateral margin of metapleuron (Fig. 14a); ostiole guttiform, oriented ventrolaterally, visible in lateral view; lateral and posterior margins of ostiolar plate elevated; peritreme ruga-shaped, directed laterally reaching the anterolateralmarginof the ostiolar plate (Fig. 14b), median furrow developed basally; peritremal surface with rugose, scale-like microsculptures (Fig. 14c). Evaporatorium well developedonmeso- 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 punctate (Fig. 14e); mushroom bodies irregular, alveoli with several trabeculae. Metathoracic spiracle wide; processes of the filter system of regular diameter, processes spiny (Fig. 14f)., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 10, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721

Camirus moestus (Stål) Ostiole closer to metacoxal cavity than to lateral margin of metapleuron (Fig. 5a); ostiole guttiform, oriented ventrally, not visible in lateral view; lateral and posterior margins of ostiolar plate leveled with remaining of metapleuron; peritreme small, elevated from surrounding pleuron, directed posterolaterally (Fig. 5b), median furrow obsolete; peritremal surface covered with conical, scale-like microsculptures (Fig. 5c). Evaporatorium poorly developed on meso- and metapleuron; on metapleuron, evaporatorium surrounding ostiole and peritremeand along the metapleural margin of spiracle, and reaching between coxal cavities, outermarginof metapleural evaporatorium sigmoid; on mesopleuron, developed on mesepimeron along the spiracular margin and on lateral margin of mesopleuron; evaporatorium punctate (Fig. 5d), punctures bearing long seta; mushroom bodies irregular, alveoli with few trabeculae. Metathoracic spiracle wide; processes of the filter system of regular diameter, processes spiny and connected to each other by few lateral expansions (Fig. 5e)., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 5, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721

Stethaulax marmorata (Say) Ostiole closer to metacoxal cavity than to lateral margin of metapleuron (Fig. 20a); ostiole elliptic, oriented ventrolaterally, visible in lateral view; lateral margin of ostiolar plate elevated; peritreme groove-shaped, directed laterally and apically curved anteriorly, parallel to surrounding pleuron (Fig. 20b), median furrow well developed; peritremal surface with scale-like microsculptures (Fig. 20c). 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 punctate (Fig. 20d); mushroom bodies irregular, alveoli with several trabeculae. Metathoracic spiracle wide; metapleural margin of spiracle with several setae; processes of the filter system of regular diameter, processes spiny (Fig. 20e)., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 12, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721

Homaemus aeneifrons (Say) Ostiole closer to metacoxal cavity than to lateral margin of metapleuron (Fig. 13a); ostiole elliptic, oriented ventrally, not visible in lateral view; lateral and posterior margins of ostiolar plate leveled with remaining of metapleuron; peritreme groove-shaped, golf-club-like, directed laterally and apically curved anteriorly, parallel to surrounding pleuron (Fig. 13b), median furrow well developed; peritremal surface smooth with spike-like microsculptures along the median furrow (Fig. 13c). Evaporatorium well developed on meso- and metapleuron; on metapleuron, evaporatorium completely covering ostiolar plate and tapered toward coxal cavities, outer margin of metapleural evaporatorium convex; on mesopleuron, reduced on mesepimeron; evaporatorium punctate (Fig. 13d); mushroom bodies irregular, alveoli with few trabeculae. Metathoracicspiracle narrow; processes of the filter system of irregular diameter, some bifurcate apically, processes spiny (Fig. 13e). Schaefer (1972) reports that Homaemus aeneifrons has a large evaporatorium and a poorly developed peritreme. However, we conclude that his observations are based on misidentified specimens, as all Homaemus species have a well-developed clavate peritremal groove., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 9, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721, {"references":["Schaefer CW (1972) Degree of metathoracic scent-gland development in the Trichophorous Heteroptera (Hemiptera). Ann Entomol Soc Am 65: 810 - 821"]}

Dystus puberulus Stål Ostioleinthemiddleof metapleuron (Fig. 11a); ostiole elliptic, oriented posterolaterally, visible in lateral view; lateral and posterior margins of ostiolar plate elevated; peritreme spout-shaped, directed anterolaterally (Fig. 11b), median furrow obsolete; peritremal surface reticulate, with elevated ridges (Fig. 11c). Evaporatoriumwelldevelopedon meso- and metapleuron; on metapleuron, evaporatorium completely covering ostiolar plate and reaching between coxal cavities, outer marginof metapleural evaporatorium straight; on mesopleuron, well developed on mesepimeron; evaporatorium punctate (Fig. 11d) and bearing setae (Fig. 11e); mushroom bodies irregular, alveoli with several trabeculae. Metathoracic spiracle wide; processes of the filter system of regular diameter, processes spiny (Fig. 11f)., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 8, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721

Sphyrocoris obliquus (Germar) Ostiole closer to metacoxal cavity than to lateral margin of metapleuron (Fig. 19a); ostiole elliptic, oriented ventrolaterally, not visible in lateral view; peritreme grooveshaped, smoking-pipe-like, directed laterally and apically ample and curved anteriorly, parallel to surrounding pleuron (Fig. 19b), median furrow well developed; peritremal surface smooth with spike-like microsculptures and setae along the median furrow (Fig. 19c). Evaporatorium well developed on meso- and metapleuron; on metapleuron, evaporatorium completely covering ostiolar plate and tapered toward coxal cavities; reduced on mesopleuron; evaporatorium punctate and setose (Fig. 19d); mushroom bodies irregular, alveoli with few trabeculae. Metathoracic spiracle narrow; metapleural margin of spiracle with several setae; processes of the filter system of irregular diameter, some bifurcate apically, processes spiny (Fig. 19e)., Published as part of Weiler, L., Barão, K. R., Cassis, G. & Grazia, J., 2016, Morphology of the external scent efferent system of Neotropical shield bugs (Hemiptera: Scutelleridae: Pachycorinae), pp. 1-16 in Zoomorphology 136 on page 12, DOI: 10.1007/s00435-016-0330-y, http://zenodo.org/record/3636721