Ischnopelta anangulata Rosso & Campos

Rosso, Pedro & Campos, Luiz Alexandre, 2021, Revision of Ischnopelta Stål, 1868 with the description of twenty new species (Hemiptera: Pentatomidae: Discocephalinae), Megataxa 6 (2), pp. 96-184 : 114-116

publication ID

https://doi.org/ 10.11646/megataxa.6.2.3

DOI

https://doi.org/10.5281/zenodo.5753083

persistent identifier

https://treatment.plazi.org/id/03828787-2C2F-FF8F-FCD5-F8D6FA39049D

treatment provided by

Plazi

scientific name

Ischnopelta anangulata Rosso & Campos
status

sp. nov.

Ischnopelta anangulata Rosso & Campos , sp. n. ( Figs. 4C View FIGURE 4 and 13 View FIGURE 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.

Type locality. BRAZIL, Minas Gerais, Pirapora [- 17.3374, -44.9271] GoogleMaps .

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 View FIGURE 13 , dr); ventral rim sinuous, median portion dark-brown and iridescent ( Fig. 13D View FIGURE 13 , 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 View FIGURE 13 ). 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 View FIGURE 13 , pa). Phallus not examined.

Female. Unknown.

Measurements: Table 3.

Distribution. Brazil (Minas Gerais) ( Fig. 6 View FIGURE 6 ).

Comments. Ischnopelta anangulata can be easily recognized by the apex of the head is not emarginated ( Fig. 13A–B View FIGURE 13 ), the short dorsal surface of pygophore with no development of posterolateral angles ( Fig. 13C–D View FIGURE 13 ), and the parameres and segment X caudally projected and surpassing the ventral rim of pygophore ( Fig. 13D View FIGURE 13 , pa, vr).

M

Botanische Staatssammlung München

MZSP

Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

SP

Instituto de Botânica

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Pentatomidae

Genus

Ischnopelta

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF