Rhinotragus dorsiger Germar, 1823

Santos-Silva, Antonio, Nascimento, Francisco E. De L. & Biffi, Gabriel, 2019, A new species of Tropidion (Neoibidionini), synonymies in Rhinotragini, notes on Pirangoclytus (Clytini) andHemicladus (Calliini), andnew recordsin Cerambycidae (Coleoptera), Zootaxa 4614 (3), pp. 449-460 : 452-454

publication ID

https://doi.org/10.11646/zootaxa.4614.3.2

publication LSID

lsid:zoobank.org:pub:1012A3FA-6943-4AA3-99C7-DDA71AAA12A3

DOI

http://doi.org/10.5281/zenodo.4330331

persistent identifier

http://treatment.plazi.org/id/50453109-FFCF-892F-FF13-49D3FACB4E4D

treatment provided by

Felipe

scientific name

Rhinotragus dorsiger Germar, 1823
status

 

Rhinotragus dorsiger Germar, 1823   .

( Figs 7–18 View FIGURES 7–18 )

Rhinotragus dorsiger Germar, 1823: 513   .

Rhinotragus marginatus Perty, 1832: 94   . Syn. nov.

Rhinotragus anceps Newman, 1838: 495   .

Rhinotragus dorsiger var. collaris Melzer, 1930: 193   . Syn. nov.

Rhinotragus dorsiger var. vittatus Melzer, 1930: 194   . Syn. nov.

Rhinotragus dorsiger var. amparensis Melzer, 1930: 194   . Syn. nov.

Rhinotragus apicalis Guérin-Méneville, 1844: 236   . Syn. nov.

Rhinotragus dorsiger   was originally described from Brazil, but the sex and amount of specimens were not included. Monné & Monné (2015) designated a male as lectotype and one male and two females as paralectotypes. Perty (1832) described R. marginatus   from Brazil (São Paulo). Subsequently, Newman (1838) described R. anceps   based on a single specimen from Brazil. Lacordaire (1868) considered R. marginatus   as a variety of R. dorsiger   , and R. anceps   as a synonym of R. dorsiger   . Tavakilian & Chevillotte (2018) mistakenly considered the latter synonym as being by Bates (1873), and Monné (2018a) did not list who made the synonymy. Gemminger (1872), without explanation, listed R. anceps   as a variety of R. dorsiger   . We are considering this citation only as a mistake. Thus, R. anceps   is a synonym of R. dorsiger   since Lacordaire (1868). However, R. marginatus   was never formally synonymized and, currently, is a subspecies of R. dorsiger   .

Melzer (1930) described three varieties: R. dorsiger var. collaris   ( Fig 17 View FIGURES 7–18 ), from Brazil (Espírito Santo, Minas Gerais, São Paulo), whose pronotun has a testaceous color, with elongated blackened maculae at the suture; R. dorsiger var. vittatus   ( Fig 18 View FIGURES 7–18 ), from Brazil (São Paulo), similar to R. dorsiger var. collaris   , but the elytra do not have the elongated black maculae; and R. dorsiger var. amparensis   ( Fig 15 View FIGURES 7–18 ), from Brazil (São Paulo), which has the pronotum entirely black, with testaceous sides and elytra without elongated black maculae at the suture.

These three varieties have been listed under synonymy of R. dorsiger   (e.g. Monné 2018a). However, as R. marginatus   , they were never formally synonymized ( ICZN 1999: Article 45.6.4). Here we are considering R. dorsiger collaris   , R. dorsiger vittatus   , R. dorsiger amparensis   , and R. dorsiger marginatus   as synonyms of R. dorsiger   , because they are all only chromatic variations of a single species.

Guérin-Méneville (1844) described Rhinotragus apicalis   based on several specimens from Bolivia. According to him (translated): “A little smaller and quite similar to the R. dorsiger   of Germar, but having no black spot in the elytra. It is elongate, black, with the elytra yellow except the blackish apex.” We studied several specimens agreeing perfectly with this description and with a photograph of one syntype. Comparing them with the several varieties of R. dorsiger   , it was not possible to find morphological differences, except the absence of the dark macula on the central area of the elytra. However, the shape of this macula is very variable in R. dorsiger   , and is absent in the holotypes of R. dorsiger var. amparensis   and R. dorsiger var. vittatus   . Furthermore, we also examined a specimen without the black central macula on the elytra, but with the sides of the prothorax reddish. Thus, we believe there is no doubt that R. dorsiger   and R. apicalis   belong to a single species with very variable color patterns, and consider the latter as a junior synonym of the former.

Currently, the species is known from Bolivia, Brazil (Mato Grosso, Bahia, Minas Gerais, Espírito Santo, Rio de Janeiro, São Paulo, Paraná, Santa Catarina, Rio Grande do Sul), Paraguay, Argentina (Misiones, Corrientes), and Uruguay ( Monné 2018a).

Material examined (all belonging to MZSP, except the specimen from Mato Grosso do Sul). ARGENTINA, Misiones: Campo Grande , 1 female, I.1974, no collector indicated   . BRAZIL, Mato Grosso do Sul (new state record): Selvíria (Unesp Farm; window-trap; “cerradão” fragment in advanced stage of regeneration; 20°23′22.5″S / 51°24′18.0″W), 1 female, 25.XI.2017, G. Paiola col. ( UNESP) GoogleMaps   . Minas Gerais: Cabo Verde , 1 female, 1920, Dias col. ( Fig. 12 View FIGURES 7–18 )   ; Mar de Espanha , 1 male, 12.XII.1909, Zikán col.;   Passa Quatro , 1 female, XI.1915, no collector indicated   ; 1 female, XI.1916, no collector indicated.   Espírito Santo: Baixo Guandu , 1 female, X.1971, P.C. Elias col.   ; Fazenda Jerusalém , 1 female, 3.XII.1911, J.F. Zikán col.   ; Rio Itabopoana , Lectotype female of R. d. var. collaris   , 19.XI.1908, J.F. Zikán col. ( Fig. 17 View FIGURES 7–18 )   . Rio de Janeiro: Nova Friburgo , 1 male, 1–15.I.1978, Gred & Guimarães col.   ; Santa Teresa , 1 male, 30.XII.1928, Conte col. ( Fig. 16 View FIGURES 7–18 ),   Itatiaia (Faz. Penedo), 1 male, 2.XI.1942, P. Wygodzinsky col. (Wygod.) ( Fig. 10 View FIGURES 7–18 )   . São Paulo: Amparo , 1 male, 1 female, no date and collector indicated   ; 1 male, 1931, Rutz col.   ; 1 male, no date indicated, Torres col.   ; holotype female of R. d. var. vittatus   , no date and collector indicated ( Fig. 18 View FIGURES 7–18 )   ; holotype male of R. d. var. amparensis   , no date and collector indicated ( Fig. 15 View FIGURES 7–18 )   ; Angatuba , 2 females, I.1922, A. Marques col.   ; Itapira , 1 female, 5.XI.1962, E. Dente col.   ; Osasco , 1 female, XII.1955, A. Martinez col.   ; Piracicaba , 1 male, 1915, Bondar col.   ; Santo Amaro , 1 male, X.1960, Lane col. ( Fig. 8 View FIGURES 7–18 )   ; São Paulo, 1 female, 13.XII.1932, Spitz col.   ; 1 female, 31.XII.1916, no collector indicated   ; 1 male, 6.I.1925, no collector indicated   ; 2 males, 6.I.1925, no collector indicated   ; 4 males, 4.I.1925, no collector indicated   ; 1 male, XI.1931, P. Wygodzinsky col. ( Fig. 13 View FIGURES 7–18 )   ; ( Ipiranga ), 1 male, XI.1910, Luederwaldt col.   ; 5 males, XII.1907, Luederwaldt col.   ; ( Jabaquara ), 1 female, 12.XII.1940, Nick col.   ; 1 female, XII.1940, former Dirings collection ( Fig. 11 View FIGURES 7–18 )   . Paraná: Curitiba (Mato Grego), 1 female, 25.XI.1937, no collector indicated   ; 2 females, 16.XII.1937, no collector indicated   ; 1 female, 23.XI.1935, no collector indicated   ; 1 female, I.1940, no collector indicated   ; 1 female, XII.1942, Pohl col.   ; 1 male, 1 female, XII.1937, no collector indicated   ; 1 male, 12.XII.1938, no collector indicated   ; 2 females, 9.XII.1937, no collector indicated   ; 6 males, 1 female, XII.1937, Pereira col. ( Fig. 9 View FIGURES 7–18 )   ; ( Ponte Ahú ), 1 male, XII.1938, no collector indicated   ; Rolândia , 1 female, IX.1952, former Dirings collection ( Fig. 7 View FIGURES 7–18 )   . Santa Catarina: Rio Vermelho [currently, São Bento do Sul], 1 female, XII.1956, former Dirings collection   ; São Bento do Sul , 1 female, XII.1951, former Dirings collection   . Rio Grande do Sul: Pelotas , 1 female, XII.1954, C. Biezanko col. 1 male ( Fig. 14 View FIGURES 7–18 ) no date and collector indicated.  

MZSP

Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Cerambycidae

Genus

Rhinotragus

Loc

Rhinotragus dorsiger Germar, 1823

Santos-Silva, Antonio, Nascimento, Francisco E. De L. & Biffi, Gabriel 2019
2019
Loc

Rhinotragus dorsiger var. collaris

Melzer, J. 1930: 193
1930
Loc

Rhinotragus dorsiger var. vittatus

Melzer, J. 1930: 194
1930
Loc

Rhinotragus dorsiger var. amparensis

Melzer, J. 1930: 194
1930
Loc

Rhinotragus apicalis Guérin-Méneville, 1844: 236

Guerin-Meneville, F. E. 1844: 236
1844
Loc

Rhinotragus anceps

Newman, E. 1838: 495
1838
Loc

Rhinotragus marginatus

Perty, J. A. M. 1832: 94
1832
Loc

Rhinotragus dorsiger

Germar, E. F. 1823: 513
1823