Agamopus viridis Boucomont, 1928 Agamopus species, 1887

Costa-Silva, Vinícius, Carvalho, Edrielly & Vaz-De, Fernando Z., 2022, A taxonomic revision of the New World genus Agamopus Bates, 1887 (Coleoptera: Scarabaeinae: Ateuchini), European Journal of Taxonomy 806 (1), pp. 64-89 : 79-83

publication ID

https://doi.org/10.5852/ejt.2022.806.1703

publication LSID

lsid:zoobank.org:pub:D0442F62-6E6D-47DF-AFFE-443472343037

DOI

https://doi.org/10.5281/zenodo.6385625

persistent identifier

https://treatment.plazi.org/id/AB4D2B10-FFA0-B508-FDAB-FACB8290380D

treatment provided by

Felipe

scientific name

Agamopus viridis Boucomont, 1928 Agamopus species
status

 

Agamopus viridis Boucomont, 1928

Figs 9–10 View Fig View Fig

Agamopus viridis Boucomont, 1928: 187 (original description).

Agamopus viridis — Balthasar 1938: 218 (diagnosis). — Blackwelder 1944: 203 (catalogue) — Pereira 1947: 4 (distribution records). — Halffter & Martínez 1968: 235 (diagnosis and key to species). — Marchiori et al. 2003: 175 (species of dung beetles from Goiás). — Mendes & Linhares 2006: 717, 719 (list of Coleoptera in pastures). — Nunes et al. 2012: 127 (list of species from Distrito Federal, Brazil). — Chaves et al. 2017: 187 (record from Planaltina, Brazil). — Tissiani et al. 2017: 405 (species list and key to dung beetles from Brazilian pastures). — Vaz-de-Mello et al. 2017: 2 (species list from Mato Grosso do Sul). — Uchoa & Rodrigues 2019: 21 (list of dung beetles from Midwest of Brazil).

Differential diagnosis

Agamopus viridis and A. joker sp. nov. are easily separated from other Agamopus species by the presence of two small tubercles on the frons, which are absent in all other species of the genus. The latter two species can be separated by the presence, in A. viridis , of an arched pygidial sulcus ( Fig. 9E View Fig ), which is sinuous in A. joker ( Fig. 4D View Fig ). For additional details, see description of A. joker .

Type material examined

Holotype (by monotypy) ( Fig. 9A–C View Fig ) BRAZIL • ♀; first label [green, printed]: “Jatahy / Prov. Goyas. Brésil”; second label [white, partly printed, partly in Boucomont’s handwriting]: “Boucomont det 1927 / Agamopus / viridis n. sp. ”; third label [white with black border, partly printed, partly handwritten]: “Museum Paris / Boucomont”; fourth label [red with black border, printed]: “Typus”; fifth label [white with red border, Gonzalo Halffter’s handwriting]: “TIPO / AGAMOPUS / VIRIDIS / BOUCOMONT / G.H.y A.M. DET. 76”; sixth label [red, printed]: “HOLOTYPE”; seventh label [white with black border, printed]: “ MNHN / EC10857 View Materials ” ( Fig. 9D View Fig ); MNHN .

Additional material examined (404 specimens)

BRAZIL – Bahia • 1 ♀; Boa Nova ; 14°19′ S, 40°13′ W; 28 Feb. 2015; J. Maciel leg.; human feces; CEMT GoogleMaps 1 ♂, 1 ♀; Caetité, Uranium Concentration Unit , INB [Nuclear Industries of Brazil] ; 8‒16 Jan. 2000; Nessimian and Baptista leg.; light; CEMT 4 ♂♂, 4 ♀♀; Encruzilhada ; Nov. 1974; M. Alvarenga and A. Martínez leg.; light; CMN 2 ♂♂; Encruzilhada ; Dec. 1980; A. Martínez and M. Alvarenga leg.; CEMT 7 ♂♂, 8 ♀♀; same collection data as for preceding; CMN 2 ♂♂, 1 ♀; Encruzilhada ; 15°31′24″ S, 40°57′52″ W; alt. 780 m; 16 Dec. 2012; J.A. Rafael and E.J. Grossi leg.; light; CEMT GoogleMaps 1 ♂; Encruzilhada ; 15°34′35″ S, 40°56′51″ W; alt. 850 m; 15 Dec. 2012; J.A. Rafael and E.J. Grossi leg.; light trap; CEMT GoogleMaps 1 ♀; Encruzilhada ; alt. 980 m; Nov. 1972; M. Alvarenga leg.; CEAH 3 ♂♂, 1 ♀; same collection data as for preceding; CEMT 59 specs; Encruzilhada, Fazenda Veredão ; Dec. 1997; A. Bello and F. Vaz-de-Mello leg.; CEMT 2 ♂♂, 3 ♀♀; Maracás ; Nov. 1965; W. Bokermann and F.M. Oliveira leg.; CEMT ; • 13 specs; same collection data as for preceding; MZSP . – Goiás • 2 specs; Aragarças ; Nov. 1965; M. Alvarenga leg.; DZUP 1 ♂; Chapada dos Veadeiros ; 14°06′33″ S, 47°42′52″ W; 6 Dec. 2015; M.V.C. Rocha leg.; CEMT GoogleMaps 1 ♀; Goiânia, Federal University of Goiás ; 16°36′10″ S, 49°16′19″ W; alt. 55 m; 30 Jan. 2016; M.B. Pessoa leg.; CEMT GoogleMaps 1 ♀; Goiânia Km 4.5 UFG [Federal University of Goiás]; 16°34′59″ S, 49°15′03″ W; alt. 763 m; 31 Feb. 2016; M.B. Pessoa leg.; CEMT GoogleMaps 1 spec.; Goiânia Km 581; 16°32′20″ S, 49°13′43″ W; alt. 844; 31 Feb. 2016; M.B. Pessoa leg.; pasture; CEMT GoogleMaps 4 specs; Rio Verde, Escola Agrotecnica Federal de Rio Verde ; 7 Apr. 2001; O.C. Sousa leg.; pasture; CEMT. – Distrito Federal 1 ♂, 2 ♀♀; Brasília ; Nov. 2000; N. Degallier leg.; CEMT 1 ♂, 1 ♀; Brasília ; Dec. 2000; N. Degallier leg.; CEMT 2 ♂♂, 3 ♀♀, 14 specs; Brasília ; alt. 1100 m; Jan. 2001; N. Degallier leg.; light; CEMT 14 specs; same collection data as for preceding; Mar. 2001; light; CEMT 6 ♂♂, 3 ♀♀; same collection data as for preceding; Nov. 2000; CEMT 8 specs; Brasília ; 15‒30 Sep. 1999; N. Degallier leg.; CEMT 1 ♂, 1 ♀; Brasília, Brasília National Park ; 15°44′09″ S, 48°00′05″ W; 29 Nov. 2018; W.L. Cunha leg.; pitfall with faeces; CEMT GoogleMaps 15 specs; Brasília, Região Administrativa Plano Piloto ; Dec. 1998; N. Degallier leg.; CEMT 1 ♀, 1 spec.; Planaltina, Águas Emendadas Ecological Station ; 15°32′31″ S, 47°36′49″ W; 1‒15 Nov. 2009; M.R. Frizzas leg.; pitfall trap; CEMT GoogleMaps 3 ♂♂, 6 ♀♀; Planaltina, Sem Três Pinheiros Farm ; 15°36′38″ S, 47°30′16″ W; 9 Dec. 2017; Y. Ferreira leg.; CEMT GoogleMaps . – Minas Gerais • 2 ♂♂, 2 ♀♀; Águas Vermelhas ; 15°45′ S, 41°27′ W; Dec. 1998; A. Bello and F. Vaz-de-Mello leg.; CEMT GoogleMaps 1 ♂, 3 ♀♀, 118 specs; same collection data as for preceding; CEMT GoogleMaps 1 ♂, 1 ♀; same collection data as for preceding; PKLC GoogleMaps 10 specs; Buritizeiro ; 17°01′08″ S, 45°06′19″ W; alt. 460 m; 28 Jan. 2012; R. Macedo leg.; CEMT GoogleMaps 1 ♂; Cordisburgo, Fazenda Pontinha ; Mar. 1992; F.Z. Vaz-de-Mello leg.; CEMT 1 ♀ Cordisburgo, Fazenda Pontinha ; 19°08′S, 44°12′W; Dec. 1997; CEMT GoogleMaps 1 ♂; Cordisburgo, Fazenda Pontinha ; Dec. 1998; F.Z. Vazde-Mello leg.; CEMT 1 ♀; Cordisburgo, Fazenda Pontinha ; 19°8′53″ S, 44°12′01″ W; alt. 700 m; 6 Jan. 2001; F.Z. Vaz-de-Mello leg. CEMT GoogleMaps 2 specs; Jaíba, Mocambinho ; 15°08′08″ S, 43°58′53″ W; alt. 450 m; 27 Mar. 2012; A. Fialho leg.; human feces; CEMT GoogleMaps 2 ♂♂, 1 ♀; Montes Claros ; Jan. 2000; J. Louzada leg.; CEMT 18 specs; Paracatu ; Nov. 1997; S.L. Assis Jr leg.; CEMT 1 ♀; Pedra Azul ; alt. 700 m; Nov. 1972; Seabra and Oliveira leg.; CEAH 2 specs; Pompéu, Pedro’s Farm ; alt. 458 m; 22 Jan. 2012; R. Macedo leg.; CEMT 1 ♀; Três Marias ; Sep. 1999; J.C. Zanúncio leg.; CEMT 1 ♀; Três Marias ; Oct. 1989; J.C. Zanúncio leg.; CEMT . – Mato Grosso do Sul • 1 spec.; Bataguassu, Rio Caraguatá ; Mar. 1953; DZUP 1 spec.; Campo Grande ; 7 Jan. 1953; M. Alvarenga leg.; DZUP 1 ♀; Campo Grande, National Beef Cattle Research Center ; 13 Jun. 1993; W.W. Koller leg.; baited with cattle dung (Nelore bovine); Brachiaria decumbens pasture; CEMT 2 ♀♀; Dourados ; 22 Oct. 2005; M. Miloca leg.; CEMT . – São Paulo • 1 spec.; Botucatu ; 22 Feb. 1955; Werner leg.; DZUP 1 spec.; same collection data as for preceding; MZSP 1 ♀; Cajuru ; 9 Feb. 1964; H.M. Canter leg.; CEMT 1 ♀; Pereira Barreto, Vale do Paraíso Farm ; 2 Jun. 1993; M.F. Aio leg.; baited with cattle dung; Brachiaria crizantha pasture; CEMT 1 ♂; Pereira Barreto, Vale do Paraíso Farm ; 26 May 1993; M.F. Aio leg.; baited with cattle dung; Brachiaria crizantha pasture; CEMT 17 specs; Rio Claro ; Dec. 1942; Coll. Claretiano; MZSP 1 ♀; São Carlos ; 11 Nov. 1993; J. Mendes leg. CEMT .

Comments

As noted earlier by Halffter & Martínez (1968), Agamopus viridis is the only species of the genus with a green metallic colour. After the examination of a series of A. viridis specimens from several Brazilian states, we observed a colour variation between populations from Bahia (Boa Nova, Caetité, Encruzilhada and Maracás) and Minas Gerais states (Águas Vermelhas) ( Fig. 10 View Fig ). Specimens from these localities have a pronotum with a reddish-brown metallic colour, while the elytra are metallic-green like individuals from other localities. Moreover, the punctation in the metaventrite and pronotum seems to be variable in form (weakly or strongly marked) and scattering of punctures (sparse or dense), and different punctation patterns are found in combination with the colour phases. Male specimens of the two colours phases were dissected and exhaustively examined, but no morphological differences were found in the tegmen (parameres and phallobase) or in the structures of endophallus between the populations. For these reasons, we interpret these distinct colour phases and punctation patterns as intraspecific variations within a single species.

Geographic distribution

Agamopus viridis is common in collections. Its distribution seems to be sympatric with that of A. unguicularis , occurring in the central region of Brazil ( Fig. 10 View Fig ).

Identification key to the Agamopus species (adapted from Halffter & Martínez 1968)

1. Frons with two small tubercles near to fronto-clypeal sulcus ( Fig. 5B View Fig , white setae). Pygidium without yellow setae ...................................................................................................................................... 2

– Frons without tubercles ( Fig. 5A View Fig ). Pygidium bearing yellow setae ( Fig. 2A‒B View Fig ) ............................. 3

2. Pygidium with arched sulcus ( Fig. 9E View Fig ). Anterior half of metatibiae with outer and inner edges gradually widened apically; inner edge smooth. Central Brazil......................................................... ................................................................................................... Agamopus viridis Boucomont, 1928

– Pygidium with sinuous sulcus ( Fig. 4D View Fig ). Anterior half of metatibiae with outer and inner edges parallel ( Fig. 4C View Fig ); inner edge crenulated. Southern Brazil (Paraná) .......... Agamopus joker sp. nov.

3. Head fully covered by micropunctation (as in Fig 5B View Fig , but without tubercles); male with posterior margin of metafemora smooth .......................................................................................................... 4

– Head with central part smooth or with sparse micropunctation ( Fig. 5A View Fig ); male with posterior edge of metafemora crenulated ( Fig. 6C View Fig ). From Mexico to northern South America ( Colombia and Venezuela) ........................................................................................ Agamopus lampros Bates, 1887

4. Pygidium with a single row of several yellow setae arranged along anterior edge of sulcus ( Fig. 2A View Fig ); Brazil and Bolivia............................................................... Agamopus unguicularis ( Harold, 1883)

– Pygidium with a row of two or three yellow setae along centre of anterior edge of sulcus ( Fig. 2B View Fig ). Suriname, French Guiana, and northern Brazil...................... Agamopus castaneus Balthasar, 1938

Identification key to the Agamopus species (adapted from Halffter & Martínez 1968)

1. Frons with two small tubercles near to fronto-clypeal sulcus ( Fig. 5B View Fig , white setae). Pygidium without yellow setae ...................................................................................................................................... 2

– Frons without tubercles ( Fig. 5A View Fig ). Pygidium bearing yellow setae ( Fig. 2A‒B View Fig ) ............................. 3

2. Pygidium with arched sulcus ( Fig. 9E View Fig ). Anterior half of metatibiae with outer and inner edges gradually widened apically; inner edge smooth. Central Brazil......................................................... ................................................................................................... Agamopus viridis Boucomont, 1928

– Pygidium with sinuous sulcus ( Fig. 4D View Fig ). Anterior half of metatibiae with outer and inner edges parallel ( Fig. 4C View Fig ); inner edge crenulated. Southern Brazil (Paraná) .......... Agamopus joker sp. nov.

3. Head fully covered by micropunctation (as in Fig 5B View Fig , but without tubercles); male with posterior margin of metafemora smooth .......................................................................................................... 4

– Head with central part smooth or with sparse micropunctation ( Fig. 5A View Fig ); male with posterior edge of metafemora crenulated ( Fig. 6C View Fig ). From Mexico to northern South America ( Colombia and Venezuela) ........................................................................................ Agamopus lampros Bates, 1887

4. Pygidium with a single row of several yellow setae arranged along anterior edge of sulcus ( Fig. 2A View Fig ); Brazil and Bolivia............................................................... Agamopus unguicularis ( Harold, 1883)

– Pygidium with a row of two or three yellow setae along centre of anterior edge of sulcus ( Fig. 2B View Fig ). Suriname, French Guiana, and northern Brazil...................... Agamopus castaneus Balthasar, 1938

MNHN

France, Paris, Museum National d'Histoire Naturelle

MZSP

Brazil, Sao Paulo, Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

DZUP

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

MNHN

Museum National d'Histoire Naturelle

CMN

Canadian Museum of Nature

MZSP

Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

DZUP

Universidade Federal do Parana, Colecao de Entomologia Pe. Jesus Santiago Moure

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Scarabaeidae

Genus

Agamopus

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Scarabaeidae

Loc

Agamopus viridis Boucomont, 1928 Agamopus species

Costa-Silva, Vinícius, Carvalho, Edrielly & Vaz-De, Fernando Z. 2022
2022
Loc

Agamopus viridis

Uchoa M. & Rodrigues M. M. 2019: 21
Chaves H. M. L. & Lozada C. M. C. & Gaspar R. 2017: 187
Tissiani A. S. D. O. & Vaz-de-Mello F. Z. & Campelo-Junior J. H. 2017: 405
Vaz-de-Mello F. Z. & Bavutti L. L. & Flechtmann C. A. & Puker A. & Correa C. 2017: 2
Nunes R. V. & Frizzas M. R. & Vaz-de-Mello F. Z. 2012: 127
Mendes J. & Linhares A. X. 2006: 717
Marchiori C. H. & Caldas E. R. & Almeida K. G. S. 2003: 175
Halffter G. & Martinez A. 1968: 235
Pereira F. S. 1947: 4
Blackwelder R. E. 1944: 203
Balthasar V. 1938: 218
1938
Loc

Agamopus viridis

Boucomont A. 1928: 187
1928