Brachystethus geniculatus (Fabricius, 1787)

Barcellos, Aline & Grazia, Jocélia, 2003, Revision Of Brachystethus (Heteroptera, Pentatomidae, Edessinae), Iheringia, Sér. Zool. 93 (4), pp. 413-446: 432-436

publication ID

http://doi.org/ 10.1590/S0073-47212003000400008

DOI

http://doi.org/10.5281/zenodo.3719835

persistent identifier

http://treatment.plazi.org/id/217887A7-991E-8026-4B31-5A6BFC8466E5

treatment provided by

Tatiana

scientific name

Brachystethus geniculatus (Fabricius, 1787)
status

 

Brachystethus geniculatus (Fabricius, 1787)  

( Figs. 1 View Fig , 10 View Figs , 20, 30 View Figs , 40 View Figs , 50 View Figs , 61 View Figs , 70 View Figs )

Cimex geniculatus FABRICIUS, 1787   :293; 1794:115; GMELIN, 1793:2151.

Edessa geniculata   ; FABRICIUS, 1803:153.

Edessa (Brachystethus) marginatus   LAPORTE, 1832:63, pl.54, fig.8.

Edessa (Brachystethus) marginata   ; BURMEISTER, 1835:356 (syn.).

Edessa circumscripta BURMEISTER, 1835:356   .

Brachystethus marginatus   ; SPINOLA, 1837:343; AMYOT & SERVILLE, 1843:161; HERRICH- SCHÄFFER, 1845:2 (syn.); DALLAS, 1851:336; SIGNORET, 1851:344; HERRICH- SCHÄFFER, 1853:310; STÅL, 1860:28; 1872:48 (syn.); WALKER, 1868:455.

Brachystethus circumscriptus   ; AMYOT & SERVILLE, 1843:161 (syn.); HERRICH- SCHÄFFER, 1845:2, fig. 789; DALLAS, 1851:336; MAYR, 1866:68; WALKER, 1868:455; STÅL, 1872:48 (syn.).

Brachystethus geniculatus   ; MAYR, 1866:68; STÅL, 1868:38 (redescription); 1872:48; BERG, 1892:11; LETHIERRY & SEVERIN, 1893:187 (cat.); KIRKALDY, 1909:152 (cat.); PENNINGTON, 1920:10 (distr.); RUFINELLI & PIRÁN, 1959:12 (distr.); BUCKUP, 1961:9; SILVA et al., 1968:54 (host plant); GRAZIA- VIEIRA & CASINI, 1973:58 (distr.); GRAZIA, 1977:164-165; FROESCHNER, 1981:69 (cat.); LINK & GRAZIA, 1987:118 (distr.).

Type material. Holotype, labeled: geniculatus   ( ZMUC). This specimen, sent as one among three syntypes of C. geniculatus   , is the only one whose characters fit with the original description, thus it is here designated as holotype. The second specimen fits the description of Cimex cribrum   , asformerly commented, and the thirdfits the diagnostic characters of B. coxalis Breddin.   Type locality: “Cajennae”. Most of the specimens studied were collected in eastern and southern Brazil, with Bahia State as its northern limit. Literaturealso indicates the occurrenceof B. geniculatus   in Uruguay. As at Fabricius time the label data were quite vague, and Caiene was indeed a site of departure and arrival of the expeditions, we consider that Caiene does not actually correspond to the collecting locality of the specimen.

Description. Dorsal surface castaneous to dark-castaneous ( fig. 10). Head castaneous to dark-castaneous, with little conspicuous wrinkles. Punctures on medial region and semi-circular stripes densely distributed. Remainder of jugae moderately to sparsely punctured, depending on the specimen. Jugae with yellow stripe on outer lateral margins, evanescent anterad. Antennae reddish-castaneous; second antennal segment one and a half longer than first; third slightly longer than second; fourth one and a half longer than third and 3/4 of the length of fifth, the longest. Fourth antennal segment cylindrical. Pronotum castaneous to dark-castaneous, with yellowish stripe on anterolateral margins, and less conspicuous on theanterior margin. Punctures fine, darkcastaneous to black, regularly distributed, except on cicatrices. Among these punctures, present larger ones, black, more concentrated before cicatrices and behind them, where they achieve theirmaximum size. Scutellumwith colorsimilar to therest of dorsal surface, with coarserpunctures on anterior half ( fig. 1). Remaining punctures fine, homogeneously and densely distributed. Corium castaneous, with a yellowish callus, internally and near to apex of radial vein. Legs uniformly reddish-castaneous. Ventral surface of thorax castaneous, punctured with dark-castaneous. Ostiolar rugae extending by about 2/3 of distance betweeninner margin of ostiolum and lateral margin of metapleura. Metasternal flat in profile. Connexivum castaneous, lateral outer 1/6 of each segment with subcaloused yellowish stripe. Entad to this border, punctures fine, densely and homogeneously distributed. Venter castaneous, bordered with a thin subcaloused, yellowish stripe. Medium-sized, concolor punctures densely distributed, except on a narrow medial stripe. Spiracles yellowish-castaneous, bordered with black.

Male genitalia. Pygophore subquadrangular, slightly wider at apex. Lobesof dorsal rim conspicuous, moderately projected posterad, sub-acute at apex. Genital cup processes little visible in dorsal view ( figs. 20, 30). Parameres with acute apex, turned anterad ( fig. 50). Ventralrimopenly V-like ( fig. 40).

Measurements (n=10). Headlength 1.95 (1.76-2.12) ± 0.13, width 2.93 (2.72-3.16) ± 0.16; interoculardistance 1.61 (1.52-1.72) ± 0.07; anteocularlength 0.67 (0.56-0.80) ± 0.07; lengthof antennalsegments: I - 0.82 (0.76-0.88) ± 0.04; II - 1.33 (1.04-1.68) ± 0.22; III - 1.60 (1.36-1.84) ± 0.16; IV - 2.57 (2.32-3.04) ± 0.26; V - 3.28 (2.88-3.92) ± 0.37; pronotallength 4.08 (3.67-4.68) ± 0.37, width 9.82 (8.68-11.02) ± 0.81; scutellarlength 6.66 (6.01-7.52) ± 0.57, width 6.30 (5.68-7.01) ± 0.49; coriumlength 8.85 (8.18-9.69) ± 0.52; abdominalwidth 10.77 (9.52-12.02) ± 0.83; totallength 14.89 (13.36-16.37) ± 0.99.

Female genitalia. Gonocoxites 8 rounded to sub-quadrangular. Sutural borders of gonocoxites 8 parallel and posterior borders bissinuated, in almost right angle over laterotergites 9 ( fig. 61). Gonocoxites 9 more than threetimeswider across apexof armsthan long medially; anteriorborderopenly U-like, armslengthequal to 1/4 of platewidth. Thickening of vaginal intima digitiform. Ductus receptaculi thin after vesicular area and slightly shorter than before to this area. Capsula seminalis globose. Annular crests convergent ( fig. 70).

Measurements (n=10). Headlength 2.08 (1.92-2.24) ± 0.10, width 3.07 (2.84-3.40) ± 0.17; interoculardistance 1.72 (1.60-1.88)± 0.09; anteocularlength 0.70 (0.60-0.80) ± 0.07; lengthof antennalsegments: I- 0.90 (0.80-0.96) ±0.05; II - 1.40 (1.20-1.84) ± 0.20; III - 1.70 (1.44-2.08) ± 0.20; IV - 2.73 (2.36-3.36) ± 0.33; V - 3.38 (2.96-4.08) ± 0.43; pronotallength 4.43 (4.01-5.18) ± 0.37, width 10.48 (9.52-12.02) ± 0.86; scutellarlength 7.41 (6.85-8.68) ± 0.61, width 6.79 (6.35-7.77) ± 0.49; coriumlength 9.74 (8.85-11.36) ± 0.80; abdominalwidth 11.85 (10.69-13.28) ± 0.86; totallength 16.34 (15.11-18.54) ± 0.99.

Material examined. BRAZIL,, Pres. by Perth Museum ( BMNH 1953-629)   ;, Blackmore col., 74, Pres. by Perth Museum ( BMNH 1953-629)   ; Chapada ,, acc. 23739 ( AMNH)   ;, XII, acc. 23739 ( AMNH)   ; Bahia: Ilhéus, 3,, III.2000, C.A.L. Guimarães (in Attalea funifera) ( UFRG)   ; Minas Gerais: Poços de Caldas ( Morro São Domingos ),,, 19.XII.1967, 29.II.1968, J. Becker, O. Roppa & O. Leoncini ( MNRJ)   ; Barbacena ,, H. Ebert ( AMNH)   ; Goiás: Pirineus ,, 2.II.1962, J. & B. Bechyné ( MPEG)   ; Espírito Santo: Linhares ,,, I.1962, Claudionor Elias ( DZUP)   ; Santa Tereza ,, 24-31.IV.1967, C. & C.T. Elias ( DZUP)   ;, 18-23.XII, C. Elias ( DZUP)   ; B. Guandu ,, 17.V.1970, C. & C.T. Elias ( DZUP)   ; Riode Janeiro:, IX, 23734 ( AMNH)   ; Riode Janeiro (Corcovado), 3, IX, X.1961, Seabra & Alvarenga ( DZUP)   ;, 15.IX.1961, J.S. Moure, Alvarenga & Seabra ( DZUP)   ; (Estr. Gávea),, 10.VII.1942, Pero M. Oliv. ( UFRG)   ; (Botafogo),, XI.1942, Pero M. Oliv. ( UFRG)   ; ( Alto da Boa Vista ),, X.1943, R. Más ( UFRG)   ; ( Tijuca ),, 13.IV.1943, R. Braga ( UFRG)   ; Itatiaia (816m),, 1.I.1933, N.B. Fagundes ( UFRG)   ; São Paulo:, 20.III.71 ( DZUP)   ;, 4.VIII.1974, C. Bordin ( UFRG)   ; Barueri , 6, 5, 02, 20.VII, 12.VIII, 12.XI.1954, 18.VII, 6.XII.1955, K. Lenko ( MNRJ)   ; Angatuba ,, XII.1922, Azevedo Marques, Inst. Biologia Entomologia Agrícola Riode Janeiro 3.492 ( UFRG)   ; Paraná: Xaxim ,, 1941, A. Souza ( MNCE 13013)   ; Imbaú ,, IX.1942; ( MNCE)   ; Pinhão ( Rio Iguaçu , próximo à Usina Hidrelétrica de Segredo), 2,, VII.1992, G. Skuk ( MNCE)   ; Alexandra ,, 10.X.1970, Moure & Mielke ( DZUP)   ; Ponta Grossa ,, 3, XI.1945, 22.II, 23.IV.1946 ( MNCE)   ; (pedreira),, XII.1943 ( DZUP)   ; Piraquara ,, 14.IV.1983, N. Gonçalves ( MNCE)   ; (mananciais da serra, (± 800m alt.),, S.L. Bonatto ( UFRG)   ; Curitiba ,, IX.1945 ( MNCE)   ;, 16.II.1966, C. Ext. DZUFP ( DZUP)   ; (Fonte Ahú),, XII.1936, Claretiano ( MNCE)   ; Praia do Leste ,, 26.V.1979, I.W. Forno ( DZUP)   ; Santa Catarina:, I.1946, A. Maller, Frank Johnson Donor   ;,, XI.1953, 2.VIII.1954, A. Maller ( MNRJ)   ; Nova Teutônia (27 o 11’N 52 o 23’L, 300- 500m),, II.1981, Fritz Plaumann ( DZUP)   ; Corupá ( Hansa Humbolt ),, II.1948, A. Maller col., Frank Johnson Donor ( AMNH)   ; Florianópolis ( Canasvieiras ),,, I.1946, C. Goffergé ( MNCE 10258, 10257)   ; Rio Grande do Sul:,, 6.XII.1973, R. Wagner Hanisch & A. Ruszczyk ( UFRG)   ;, 17.XII.1973, E. Heinrichs ( UFRG)   ;, 19.III.1974, R.A. Ilana ( UFRG)   ; Derrubadas ( Parque Florestal Estadual do Turvo ), 3, 3, 3.IX.1982, 21-25.V.1984, S.L. Bonatto ( UFRG)   ; Porto Alegre ,, V.1955, O.P.H. (em Ayrax l eprosum C. de vaca) ( UFRG)   ; ( Morro Santana ), 3, 10, 13.VIII. 1982, S. Bonatto (em quiescência) ( UFRG)   ;, 4, 15.IX.1983, M. Becker (em quiescência em bromeliáceas) ( UFRG)   ; ( Reserva do Lami ),, 12.II.1992, A.B.P. Santos ( UFRG)   ; ( Petrópolis ),, 13.XII.1982, G. Bond, L. Buckup ( UFRG 271)   ; (Vila Manresa),, 16.II.1965, Pe. Buck ( UFRG 6306)   ; ( Belém Novo ),, 2, 17.IV.1955, M.R. Oliveira ( UFRG)   ;, 11.IV.1981, R.P. Mocellin ( UFRG)   ; Santa Maria ,, 10.IV.1981, A. Stringhini ( UFRG)   ; São Sepé ,, 17.V.1981, C.R. Kelling ( UFRG)   ;, 27.IV.1989, Link & Costa ( UFRG)   ; Guaíba ( E.E. Guaíba ),, 15.IV.1974, E. Heinrichs ( UFRG)   ; Viamão ,, 18.IX.1993, L.A. Campos ( UFRG)   ; Pelotas ,, 10.II.1941 ( UFRG)   ;, 14.IV.1961, C.M. Biezanko ( BMNH)   ; 2,, 16.XII.1961, 05.IV.1963, 7.IV.1966, C.M. Biezanko ( BMNH 1965-175, 1963- 375, 1966-318);   2, 14.V.1967, C.M. Biezanko ( AMNH)   ; 2, 2, 14.V.1967, J. L. Mantovani & Biezanko ( BMNH 1967-265)   . BOLIVIA, Santa Cruz: San Francisco ,, 1895, A. Borelli ( MRSN)   . PARAGUAY, Itapúa: Hohenau ,, III.1955, J.L. Stehlik ( BMNH 1966-601)   . ARGENTINA, Buenos Aires: Buenos Aires ,, Hoefel, Coll. J. Stehlik ( BMNH 1964-449)   ;, II.1953, Hoefel, Coll. J. Stehlik ( BMNH 1966-601)   . No data: 2 ( AMNH, UFRG)   ;, P.R. Uhle col. ( AMNH)   .

Distribution. Brazil (Bahia, Minas Gerais, Goiás, Espírito Santo, Riode Janeiro, São Paulo to Rio Grande do Sul), Bolivia (Santa Cruz), Paraguay (Itapúa), Argentina (Buenos Aires).

Comments. Brachystethus geniculatus   is the sister group of the clade formed by B. coxalis   , B. improvisus   and B. vicinus   , sharing with them the yellowish border of pronotum and the callus on corium ( BARCELLOS & GRAZIA, 2003). Brachystethus geniculatus   is very similar to B. coxalis   , by the parameres, with acute apices, and by the metasternal carina, flat in profile, contrasting with the carina strongly elevated of the other two species. Brachystethus geniculatus   is differenciated from B. coxalis   , B. improvisus   and B. vicinus   by the uniform color pattern of legs.

ZMUC

Denmark, Kobenhavn [= Copenhagen], University of Copenhagen, Zoological Museum

AMNH

USA, New York, New York, American Museum of Natural History

UFRG

Brazil, Rio Grande do Sul, Porto Alegre, Universidade Federal do Rio Grande do Sul, Instituto de Biologia

MNRJ

Brazil, Rio de Janeiro, Sao Cristovao, Universidade do Rio Janeiro, Museu Nacional

MPEG

Brazil, Para, Belem, Museu Paraense Emilio Goeldi

DZUP

Brazil, Parana, Curitiba, Universidade Federal do Parana, Museu de Entomologia Pe. Jesus Santiago Moure

MNCE

Brazil, Parana, Curitiba, Museu de Historia Natural Capao da Embuia

BMNH

United Kingdom, London, The Natural History Museum [formerly British Museum (Natural History)]

MRSN

Italy, Torino, Museo Regionale di Scienze Naturali

ZMUC

Zoological Museum, University of Copenhagen

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Pentatomidae

Genus

Brachystethus

Loc

Brachystethus geniculatus (Fabricius, 1787)

Barcellos, Aline & Grazia, Jocélia 2003
2003
Loc

Brachystethus geniculatus

LINK & GRAZIA 1987: 118
FROESCHNER 1981: 69
GRAZIA 1977: 164-165
GRAZIA-VIEIRA & CASINI 1973: 58
SILVA et al. 1968: 54
BUCKUP 1961: 9
RUFINELLI & PIRÁN 1959: 12
PENNINGTON 1920: 10
KIRKALDY 1909: 152
LETHIERRY & SEVERIN 1893: 187
BERG 1892: 11
STÅL 1872: 48
STÅL 1868: 38
MAYR 1866: 68
1866
Loc

Brachystethus circumscriptus

STÅL 1872: 48
WALKER 1868: 455
MAYR 1866: 68
DALLAS 1851: 336
HERRICH-SCHÄFFER 1845: 2
AMYOT & SERVILLE 1843: 161
1843
Loc

Brachystethus marginatus

STÅL 1872: 48
WALKER 1868: 455
STÅL 1860: 28
HERRICH-SCHÄFFER 1853: 310
DALLAS 1851: 336
SIGNORET 1851: 344
HERRICH-SCHÄFFER 1845: 2
AMYOT & SERVILLE 1843: 161
SPINOLA 1837: 343
1837
Loc

Edessa (Brachystethus) marginata

BURMEISTER 1835: 356
1835
Loc

Edessa circumscripta BURMEISTER, 1835:356

BURMEISTER 1835: 356
1835
Loc

Edessa (Brachystethus) marginatus

LAPORTE 1832: 63
1832
Loc

Edessa geniculata

FABRICIUS 1803: 153
1803
Loc

Cimex geniculatus FABRICIUS, 1787

FABRICIUS 1794: 115
GMELIN 1793: 2151
FABRICIUS 1787: 293
1787