Heraeus alvarengai

Pablo M. Dellapé, María C. Melo & Thomas J. Henry, 2016, A phylogenetic revision of the true bug genus Heraeus (Hemiptera: Rhyparochromidae: Myodochini), with the description of two new genera and 30 new species, Zoological Journal of the Linnean Society 177 (177), pp. 29-134 : 77-81

publication ID	https://doi.org/ 10.1111/zoj.12362
DOI	https://doi.org/10.5281/zenodo.5611155
persistent identifier	https://treatment.plazi.org/id/6F64DB1B-5E70-FF9B-FC1E-FB76FF23FAF0
treatment provided by	Plazi
scientific name	Heraeus alvarengai
status	sp. nov.

Treatment

HERAEUS ALVARENGAI View in CoL SP. NOV.

( FIGS 25 View Figure 25 A, 26A, 27A–D, 28)

Diagnosis

Ocelli placed anterior to an imaginary line passing the posterior border of eyes. Labium extending to metacoxae. Evaporative area short, distance from dorsal margin of auricle to dorsal margin of evaporative area shorter than distance from dorsal margin of evaporative area to dorsal margin of metapleura. Membrane with a diffuse, apical whitish spot. Meso- and metafemur with a subapical brown band. Apex of pygophore pointed dorsally in lateral view.

This is the only species with the ocelli placed anterior to an imaginary line passing the posterior border of eyes.

Description ( Fig. 25 View Figure 25 A)

Total length 4.75.

Head: Brown, shiny, with short recumbent and scattered erect setae. Head length 1.06, width 0.82. Postocular length 0.37. Eyes not surpassing dorsal margin of head in lateral view. Ocelli placed anterior to an imaginary line passing the posterior border of eyes. Interocular width 0.42, interocellar width 0.26. Labium pale brown, with short erect setae; extending to metacoxae. Labial segment lengths: I 0.72, II 0.83, III 0.72, and IV 0.34. Antennae (right antenna with three segments, last segment darker with a diffuse pale band) pale brown, apex of basiflagellomere darker; distiflagellomere absent; with abundant, short, recumbent setae. Antennal lengths: scape 0.42, pedicel 0.93, and basiflagellomere 0.78.

Thorax: Pronotum brown, posterior lobe paler, with two irregular pale spots, each humeral angle with a pale spot; anterior and posterior lobes with short recumbent setae, with long scattered setae on anterior lobe. Pronotum pruinose, punctate, punctures larger on posterior lobe. Collar length 0.08, anterior lobe length 0.61, posterior lobe length 0.37; anterior lobe width 0.80, posterior lobe width 1.14. Pleurae brown, punctate, with short recumbent setae. Evaporative area short. Scutellum brown, with a longitudinal, dark, median stripe, pruinose, punctate, with short recumbent and sparse long erect setae. Hemelytra with short recumbent setae. Costal margin pale on proximal threequarters, corium darker distally, with a subapical whitish spot and a rounded pale spot internally ( Fig. 25 View Figure 25 A); membrane dark brown, veins paler, with a diffuse apical whitish spot. Legs: Coxae, protrochanter, and profemur brown, remainder of legs whitish, except for a darker subapical band on meso- and metafemur, tibiae darker apically ( Fig. 26 View Figure 26 A); setae short and semierect. Profemur with spines on apical two-thirds. Protibia straight.

Abdomen: Brown, with abundant short recumbent setae. Male genitalia: Pygophore ( Fig. 27 View Figure 27 A, B) rounded, anterior margin of dorsal aperture slightly rounded, apex with a dorsally directed protuberance; declivent posteriorly in lateral view. Inner projections elongate, more produced posteriorly. Parameres: Figure 27 View Figure 27 (C, D). Aedeagus: vesica with a few spines laterally and with two sclerotized lobes bearing spines anteriorly; processus gonopori long and slender.

Distribution

Brazil ( Fig. 28 View Figure 28 ).

Etymology

This species is named after the late Brazilian entomologist Moacyr Alvarenga, who collected the holotype.

Type material

Holotype: ♂, BRAZIL, [Río Grande do Sul], Guanabara, Represa Rio Grande, VI-1972, M. Alvarenga (AMNH).