Eurygaster Laporte, 1833

Neimorovets, Vladimir, 2020, Review of the genus Eurygaster (Hemiptera: Heteroptera: Scutelleridae) of Russia, Zootaxa 4722 (6), pp. 501-539 : 505

publication ID

https://doi.org/ 10.11646/zootaxa.4722.6.1

publication LSID

lsid:zoobank.org:pub:CDB2B9F6-4005-4E73-A414-7ECF641E289F

DOI

https://doi.org/10.5281/zenodo.5610070

persistent identifier

https://treatment.plazi.org/id/CC76B80E-FFEE-FFB5-1C9E-3A8DC749FC90

treatment provided by

Plazi

scientific name

Eurygaster Laporte, 1833
status

 

Genus Eurygaster Laporte, 1833 View in CoL

Eurygaster Laporte, 1833: 68 View in CoL . Type species by subsequent designation ( Anonymous, 1838: 295): Cimex hottentotta Fabricius, 1775 .

Description. Body wide oval, moderately convex, without vestiture, with dense black, brown or pale punctures. Abdominal punctures small, hardly visible. Dorsum usually brownish to pale yellow, rarely grey, varying from pale to very dark, with more or less distinct marble-like pattern ( Figs. 56–104 View FIGURES 56–65 View FIGURES 66–74 View FIGURES 75–85 View FIGURES 86–97 View FIGURES 98–104 , 108 View FIGURES 105–111 ).

Melanist forms occur among specimens of E. austriaca , E. integriceps , E. maura , and E. testudinaria ( Figs. 61 View FIGURES 56–65 , 74 View FIGURES 66–74 , 83 View FIGURES 75–85 and 90 View FIGURES 86–97 ). Studied material of E. dilaticollis and E. laeviuscula did not include black specimens ( Figs. 62–65 View FIGURES 56–65 ).

Head large, more or less triangular when viewed from above, pointed or rounded apically and slightly tilted down ( Figs. 13–25 View FIGURES 13–18 View FIGURES 19–25 ). Head 1.5–2.7 times as wide as long. Mandibular plates same length with clypeus ( E. integriceps , E. maura and E. dilaticollis ) or slightly extended ( E. testudinaria , Fig. 25 View FIGURES 19–25 ). Mandibular plates in E. austriaca and E. laeviuscula , longer than clypeus and often closed in front of clypeus ( Figs. 19, 20 and 23 View FIGURES 19–25 ). Lateral margins of mandibular plates straight or slightly convex. Antennae thin, second segment slightly curved.

Pronotum 2.1–2.7 times as wide as long. Anterolateral margins of pronotum prominently convex, straight or slightly concave. Anterior lobes of prothorax broad, extending forward and covering base of antennae. Scutellum tongue-shaped with straight parallel lateral margins, covering most of abdomen and extending beyond its tip. Visible part of corium narrow, with costal margin more or less widely concave at middle. Legs short, covered with short sharp setae. Tibiae shorter than respective femora.

Abdomen at widest point usually wider than pronotum, ventrally convex, dorso-ventrally flattened at sides. Connexivum mostly visible from above. Aedeagus with one to four pairs of conjunctival appendages. Crown of paramere divided into thorn and blade ( Fig. 11 View FIGURES 11–12 ). Lateral edge of paramere more or less convex and covered with setae. Shape of conjunctival appendages ( Figs. 32–37 View FIGURES 32–37 , 38–49 View FIGURES 38–41 View FIGURES 42–45 View FIGURES 46–49 A–C), parameres ( Figs. 38–49 View FIGURES 38–41 View FIGURES 42–45 View FIGURES 46–49 D–F) and postgenital segments of females ( Figs. 50–55 View FIGURES 50–55 ) more or less vary within each studied species.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Scutelleridae

Loc

Eurygaster Laporte, 1833

Neimorovets, Vladimir 2020
2020
Loc

Eurygaster

Anonymous & Drapiez, P. A. J. 1838: 295
1838
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