Euschistus (Euschistus) heros (Fabricius, 1798)

Matesco, Viviana Cauduro, Bianchi, Filipe Michels, Fürstenau, Brenda Bianca Rodrigues Jesse, Silva, Priscila Poock Da, Campos, Luiz Alexandre & Grazia, Jocelia, 2014, External egg structure of the Pentatomidae (Hemiptera: Heteroptera) and the search for characters with phylogenetic importance, Zootaxa 3768 (3), pp. 351-385 : 365

publication ID

https://dx.doi.org/10.11646/zootaxa.3768.3.5

publication LSID

lsid:zoobank.org:pub:076F3E92-066C-46A0-9ADE-09D3AA8F8707

persistent identifier

https://treatment.plazi.org/id/03A487D3-9A2E-0325-E497-21BCECAFF806

treatment provided by

Plazi

scientific name

Euschistus (Euschistus) heros (Fabricius, 1798)
status

 

Euschistus (Euschistus) heros (Fabricius, 1798) , Euschistus (Lycipta) riograndensis Weiler & Grazia, 2011 , and Euschistus (Mitripus) paranticus Grazia, 1987

( Figs. 2, 3 View FIGURES 1 – 12 , 31–42 View FIGURES 25 – 36 View FIGURES 37 – 48 ; Tab. 2 View TABLE 2 )

Eggs barrel-shaped; color prior to embryonic development light green (in E. heros ) or white (in E. riograndensis and E. paranticus ) ( Figs. 2, 3 View FIGURES 1 – 12 ); operculum round, with variable convexity, usually slightly convex ( Figs. 2, 3 View FIGURES 1 – 12 ), but conspicuously flatter in E. heros ; chorion translucent and spinose. The eclosion line is not evident under SM; the AMPs are circularly arranged in a row around the anterior pole, white, moderately long and filiform ( Figs. 2, 3 View FIGURES 1 – 12 ).

The chorion surface of all species of Euschistus Dallas studied here is densely spinose under SEM. The interconnected spines form polygonal markings that are mostly triangular at the lateral wall ( Figs. 31 View FIGURES 25 – 36 , 39 View FIGURES 37 – 48 ). The spines display different sizes, being usually thicker and longer at the triangle vertices ( Figs. 33 View FIGURES 25 – 36 , 37, 38 View FIGURES 37 – 48 ). This pattern may be obscured by traces of adhesive material gluing adjacent eggs ( Fig. 39 View FIGURES 37 – 48 ). The operculum is similarly sculptured, with interconnected spines forming triangles ( Figs. 32, 36 View FIGURES 25 – 36 , 40 View FIGURES 37 – 48 ). The spines are shorter at the center of the operculum, and polygonal markings are sometimes obliterated ( Fig. 36 View FIGURES 25 – 36 ). The spines display different sizes and are interconnected by a short membrane at the periphery of the operculum ( Figs. 34 View FIGURES 25 – 36 , 41 View FIGURES 37 – 48 ). The eclosion line is not evident. The AMPs are tubular in E. riograndensis ( Fig. 38 View FIGURES 37 – 48 ) and slightly clubbed in the two other species ( Figs. 33, 34 View FIGURES 25 – 36 , 41 View FIGURES 37 – 48 ). Their openings are circular and apical, and there are fine connector sheets among adjacent AMPs in E. heros ( Fig. 34 View FIGURES 25 – 36 ). The surface of the AMPs is spongy under higher magnification ( Figs. 35 View FIGURES 25 – 36 , 42 View FIGURES 37 – 48 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Pentatomidae

Genus

Euschistus