Ischnodemus correntinus, Dellapé & Melo, 2022

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 correntinus sp. nov.

Figs 3B , 5D , 6D

Ischnodemus stalii (misidentification): Melo et al. (2004: 66).

Lsid link.

http://lsid.speciesfile.org/urn:lsid:Lygaeoidea.speciesfile.org:TaxonName:518390.

Type material.

Holotype ARGENTINA • male; Corrientes, Col. Pellegrini; 27-IX-2002; Malaise trap; MLP he-10553 (Fig. 3B ).

Description.

(Fig. 3B ) Total length 6.13. Head, pronotum and scutellum punctate, shallowly punctate on posterior half of posterior pronotal lobe; clothed with short decumbent, semidecumbent and erect setae.

Head grey-black, pruinose dorsally except shiny clypeus and antenniferous tubercles. Head length 0.65, head width 1.01, interocular space 0.62. Vertex slightly convex, eyes ovoid, and set well away from anterolateral pronotal angles. Ocelli much closer to anterior margin of pronotum than to the eyes, interocellar space 0.34. Labium short, not attaining anterior margin of mesosternum. Labial segments length: I 0.34, II 0.34, III 0.30, IV 0.26. Antennae brown, distiflagellomere paler medially; with abundant decumbent and sparse erect setae; scapus surpassing apex of clypeus by half its length, antennal segments length: scapus 0.26, pedicellus 0.78, basiflagellomere 0.58, distiflagellomere 0.80.

Pronotum slightly sinuate laterad, narrowing gradually from mid-length of anterior lobe to collar; transverse impression shallow, nearly obsolete; posterior margin concave. Pronotum length 1.04, pronotum width 1.43. Anterior pronotal lobe grey-black, pruinose with intermixed small shiny spots, collar entirely pruinose; posterior pronotal lobe brown with three distinct shiny areas (pair of oval spots on humeri and a transversely elongate median band). Metathoracic scent gland auricle slightly produced anteriorly, orange brown dorsally. Scutellum grey-black, pruinose, with a longitudinal median fringe without punctures. All femora moderately incrassate, mutic. Coxae brown, rest of legs light brown. All legs with abundant decumbent short setae. Hemelytra attaining half the length of 7th abdominal tergum, length 3.84. Hemelytra yellowish brown, with base of clavus and apical region of corium darker; membrane smoky brown, veins concolorous. Sterna pruinose, except a two quadrangular shiny areas on mesosternum, densely clothed with short decumbent setae.

Abdomen dark brown, connexiva contrastingly paler, with the anterior outer region yellowish. Male genitalia: Pygophore (Fig. 5D ) dorsal aperture broad, anterior margin slightly rounded, inner projections triangular, posterior margin shallowly concave medially. Parameres: blade long, curved, inner projection truncated basally, outer projection elongate (Fig. 6D ).

Etymology.

The specific epithet is a Latinized word created from the Spanish adjective correntino, - a, meaning "related to the Corrientes", in reference to Corrientes Province (Argentina) where the holotype was collected. To be treated as an adjective (correntinus, - a, - um).

Distribution.

Only known from the type locality Col. Pellegrini, Corrientes Province, Argentina.

Remarks.

This specimen was mentioned in the inventory from Colonia Carlos Pellegrini (Esteros de Iberá, Corrientes, Argentina) as Ischnodemus stalii ( Melo et. al. 2004).

Figures

Figure 3. Dorsal habitus. A. Ischnodemus infernalis sp. nov.; B. Ischnodemus correntinus sp. nov. Scale bars: 1 mm.

Figure 5. Pygophore, posterodorsal view. A. Ischnodemus nigromaculatoides sp. nov.; B. Ischnodemus formosus sp. nov.; C. Ischnodemus infernalis sp. nov.; D. Ischnodemus correntinus sp. nov. Scale bar: 0.5 mm.

Figure 6. Right paramere. A. Ischnodemus nigromaculatoides sp. nov.; B. Ischnodemus formosus sp. nov.; C. Ischnodemus infernalis sp. nov.; D. Ischnodemus correntinus sp. nov. Scale bar: 0.25 mm.