Oebalus ypsilongriseus ( De Geer, 1773 ),

Barros, Lurdiana D., Paim, Marcelo R., Krein, Verônica, Carabajal, Victor, Brandão, Marcela N., Bernardes, Paula De O. & Lindner, Mariana F., 2021, Illustrated guide to Pentatominae (Hemiptera: Pentatomidae) species associated with the four main grain crops in Rio Grande do Sul state, Brazil, Zootaxa 4958 (1), pp. 430-478: 464-465

publication ID

https://doi.org/10.11646/zootaxa.4958.1.27

publication LSID

lsid:zoobank.org:pub:303D300E-C17B-407C-A63B-53F906C5D825

DOI

http://doi.org/10.5281/zenodo.4711047

persistent identifier

http://treatment.plazi.org/id/F55187E5-FF86-FFB0-FF36-9B7B258F7B41

treatment provided by

Plazi

scientific name

Oebalus ypsilongriseus ( De Geer, 1773 )
status

 

Oebalus ypsilongriseus ( De Geer, 1773) 

( Figs 98–99View FIGURES 98–99)

Cimex ypsilon-griseus De Geer, 1773: 333  .

Oebalus ypsilonoides Berg, 1878: 302  .

Solubea ypsilonoides: Kirkaldy, 1909: 62  .

Solubea ypsilionides  [sic]: Pennington, 1920: 8.

Solubea ypsilongriseus: Sailer, 1944: 116  .

Solubea grisescens Sailer, 1944: 118  .

Oebalus ypsilongriseus: Quintanilla et al., 1968: 33  .

Material studied. Guaíba: 1♂, 24.II.1988, M. C. Del Vecchio & J. A. M, Fernandes leg., “Sobre gramíneas vizinhas à lavouras de Soja”, J. Grazia det. ( UFRG)  ; 1♀, 15.III.1974, E. Heinrichs leg., “Soja” ( UFRG)  ; 1♀, 24.VIII.1988, “vizinho à lavoura de Soja”, M. C. Del Vecchio & J. A. M. Fernandes, J. Grazia det. 19?? ( UFRG)  .

Diagnostic features. Body elongate and slim, dorsal surface castaneous with two small pale yellow spots on pronotum ( Fig. 98View FIGURES 98–99). Mandibular plates subequal to clypeus and rounded apically. Pronotum sloping, anterolateral margins of pronotum concave. Humeral angles with variable development, from weakly produced to forming an acute spine, directed anterolaterally, black. Scutellum with three yellow callosities, of variable size ( Fig. 98View FIGURES 98–99). Body length: 8.00–10.00 mm.

Recorded host plants. Oat ( Campos et al. 2009); rice, soybean ( Grazia 1977; Link & Grazia 1987; Del Vecchio & Grazia 1992) and wheat ( Link & Grazia 1987; Campos et al. 2009). This species may also use sorghum (Sorghum bicolor) and Echinochloa  spp., Paspalum  spp., Brachiaria  spp., Digitaria  spp. grasses as alternative hosts ( Ferreira et al. 2001; Hickel et al. 2016).

Distribution in Rio Grande do Sul. Eldorado do Sul, Guaíba, Santa Maria and São Gabriel ( Fig. 99View FIGURES 98–99).

Comments. This species is similar to O. poecilus  , being differentiated by having yellow callosities only on scutellum (while O. poecilus  also has spots on pronotum and corium). The humeral angles spines, when strongly developed, are also different: they are directed anterolaterally in O. ypsilongriseus  , but directed laterally in O. poecilus  . Both species have seasonal morphological dimorphism, with active adults being more colorful and with well-developed spines, and overwintering adults mostly castaneous with shorter and rounded lateral spines ( Albuquerque 1993) (see Garbelotto & Campos 2014).

UFRG

Instituto de Biologia

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Pentatomidae

Genus

Oebalus

Loc

Oebalus ypsilongriseus ( De Geer, 1773 )

Barros, Lurdiana D., Paim, Marcelo R., Krein, Verônica, Carabajal, Victor, Brandão, Marcela N., Bernardes, Paula De O. & Lindner, Mariana F. 2021
2021
Loc

Oebalus ypsilongriseus:

Quintanilla, R. H. & Margheritis, A. E. & Rizzo, H. F. 1968: 33
1968
Loc

Solubea ypsilongriseus:

Sailer, R. I. 1944: 116
1944
Loc

Solubea grisescens

Sailer, R. I. 1944: 118
1944
Loc

Solubea ypsilionides

Pennington, M. S. 1920: 8
1920
Loc

Solubea ypsilonoides:

Kirkaldy, G. W. 1909: 62
1909
Loc

Oebalus ypsilonoides

Berg, C. 1878: 302
1878
Loc

Cimex ypsilon-griseus

De Geer, C. 1773: 333
1773