Ischnopelta anangulata Rosso & Campos, sp. n.
Creators: name: Rosso, Pedro
name: Campos, Luiz Alexandre
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Pentatomidae
Ischnopelta
Ischnopelta anangulata

description: Ischnopelta anangulata Rosso & Campos, sp. n. (Figs. 4C and 13)
Etimology. The epithet refers to the absence of the posterolateral angles of the pygophore. Latin: a-, an- = not, without (absent) + angularis, -tus = with angles.
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Legend: tl, total length; mw, maximum width (at the sternite III level); hl, head length; cl, clypeus length; hw, head width; iod, interocellar distance; ied, interocular distance; pl, pronotum length; haw, pronotum width at the level of humeral angles; aaw, pronotum width at the level of anterolateral angles; sl, scutellum length; fll, frenal lobe length; pfl, post-frenal lobe length; bsw, basal scutellum width; fcw; scutellum width at the level of frenal constriction; I, II, III, IV and V, antennal and labium segments length.
Type locality. BRAZIL, Minas Gerais, Pirapora [- 17.3374, -44.9271].
Holotype. Male. BRAZIL, Minas Gerais, Pirapora, XI.1975, M. Alvarenga. Deposited at the Museu de Zoologia da Universidade de São Paulo (MZSP), São Paulo (SP), Brazil.
Description. The overall somatic morphology is as described for I. scutellata, except for the following features. Head. Anterior margin not emarginated. Ocular peduncles scarcely punctured. Antennae: segment I and dorsal surface of segments II and III dark yellowish, the latter brown stained; ventral surface of segments II to V brown; segments ratio: I>II<III<IV<V.
Thorax. Hemelytra: corium as long as scutellum; conspicuous spot at apex of radial vein; radial vein continued by a reddish line. Distal 1/3 of femora and tibiae punctures, some punctures larger than the rest of the body; setae on posterodorsal margin of protibiae as long as the others.
Abdomen. Posterolateral angles of urosternite VII unarmed.
Male. Apical margin of hemelytral membrane convex; urosternite VII reaching anteriorly the imaginary line connecting the spiracles of urosternite V. Genitalia. Dorsal rim of pygophore sinuous, slightly convex on the median portion (Fig. 13C, dr); ventral rim sinuous, median portion dark-brown and iridescent (Fig. 13D, vr). Posterolateral angles not developed. Setae short on the median portion of ventral rim and 1 + 1 tufts of long setae on the lateral portions. Segment X wider than long; cordiform and apically emarginated; lateral margins sclerotized and covered by setae; median region membranous (Fig. 13C, X). Parameres with flat head, shaped as 1/4 circumference; oblique to the frontal plane; inner margin subrectilinear and strongly sclerotized; ventral surface convex and covered by long setae (Fig. 13D–E, pa). Phallus not examined.
Female. Unknown.
Measurements: Table 3.
Distribution. Brazil (Minas Gerais) (Fig. 6).
Comments. Ischnopelta anangulata can be easily recognized by the apex of the head is not emarginated (Fig. 13A–B), the short dorsal surface of pygophore with no development of posterolateral angles (Fig. 13C–D), and the parameres and segment X caudally projected and surpassing the ventral rim of pygophore (Fig. 13D, pa, vr).
description: Published as part of Rosso, Pedro & Campos, Luiz Alexandre, 2021, Revision of Ischnopelta Stål, 1868 with the description of twenty new species (Hemiptera: Pentatomidae: Discocephalinae), pp. 96-184 in Megataxa 6 (2) on pages 114-116, DOI: 10.11646/megataxa.6.2.3, http://zenodo.org/record/5752808