Ischnodemus nigromaculatus Slater & Wilcox, 1969

Dellape, Pablo M. & Melo, Maria C., 2022, Four new species of Ischnodemus (Hemiptera, Heteroptera, Blissidae) and additional records from Argentina, Deutsche Entomologische Zeitschrift 69 (2), pp. 283-295 : 283

Ischnodemus nigromaculatus Slater & Wilcox, 1969

Figs 1 , 4D

Lsid link.

http://lsid.speciesfile.org/urn:lsid:Lygaeoidea.speciesfile.org:TaxonName:489259.

Material examined.

Holotype • female [photograph only]; Brasilia , Rio Grande; HNHM (Fig. 1 ); • 1 male 1 female; French Guiana, Mitaraka; 20-III-2015; SLAM (Sea Land and Air Malaise. Malaise Autoportant); MLP.

Diagnosis.

Labium exceeding base of prosternum. Pronotum in large part pruinose, including collar and posterior margin, and with a complete shiny band on posterior lobe. Basal and apical dark areas of clavus connected by a diffuse dark stripe along inner margin (more evident in recently collected specimens); hemelytral membrane bearing a large central dark macula, contacting lateral margins of membrane and strikingly contrasting with pale basal and apical areas (Fig. 1 ). Tibiae and tarsi pale, contrasting with darker femora.

Distribution.

Argentina, Brazil, French Guiana and Trinidad.

Remarks.

We also examined two males from La Paz, Bolivia, deposited in MLP that were provisionally included in the group “b” of the additional material studied by Slater and Wilcox (1969). These specimens are smaller, darker, with a somewhat longer labium and a narrower transverse shiny pronotal band, and we agree with Slater and Wilcox that they may represent a distinct species, but the poor condition of the specimens discourages us from describing it.

Figures

Figure 1. Ischnodemus nigromaculatus Slater & Wilcox, 1969. Holotype dorsal habitus and labels (HNHM).

Figure 4. Head and pronotum. A. Ischnodemus nigromaculatoides sp. nov.; B. Ischnodemus formosus sp. nov.; C. Ischnodemus infernalis sp. nov.; D. Ischnodemus nigromaculatus Slater & Wilcox, 1969 (HNHM). Scale bars: 1 mm.