Mycotretus signatellus signatellus Crotch, 1876

Pecci-Maddalena, Italo Salvatore de Castro, Lopes-Andrade, Cristiano & Skelley, Paul, 2023, Catalogue of Mycotretus Lacordaire, 1842 (Coleoptera: Erotylidae: Tritomini): an annotated, illustrated and historical approach, European Journal of Taxonomy 876 (1), pp. 1-182 : 54-55

55. Mycotretus signatellus signatellus Crotch, 1876

Mycotretus signatellus Crotch, 1876: 443 . Type locality: “Ega” [= Tefé, in the state of Amazonas, North Brazil].

Mycotretus signatellus imperfectus Crotch, 1876: 443 [as a variety]: Type locality: “Para” [State of Pará, North Brazil] syn. nov. ( Fig. 11C ).

Mycotretus fragosoi Alvarenga, 1983: 587 . Type locality: “ BRASIL, Amazonas, Estirão do Equador (coordenadas aproximadas, long 71º38’W e lat 4º33’S)” [Rio Javari, Estirão do Equador, in the state of Amazonas, North Brazil] syn. nov. ( Fig. 2B ).

Mycotretus signatellus – Gemminger & Harold 1876: 3695. — Kuhnt 1909: 76; 1911: 53. — Blackwelder 1945: 467. — Alvarenga 1994: 35. — Skelley 1998b: 16.

Mycotretus signatellus imperfectus – Kuhnt 1909: 76; 1911: 53. — Blackwelder 1945: 467. — Alvarenga 1994: 35. — Skelley 1998b: 16 [“ imperfecta ”].

Mycotretus fragosoi – Alvarenga 1994: 26.

Primary type

Lectotype, here designated ( Fig. 11B )

BRAZIL • “TYPE [blue label, printed] \ TYPE [printed], signatellus Ega Bates [handwritten] \ LECTOTYPE [printed], Mycotretus signatellus Crotch, 1876 [red label, handwritten]”; UMZC.

Other specimens examined

Paralecotype

BARZIL • 1 spec.; “Bates [printed] \ PARATYPE [blue label, printed] \ PARALECTOTYPE [printed], Mycotretus signatellus Crotch, 1876 [yellow label, handwritten]; UMZC.

Additional material

BRAZIL • 1 ♀ (dissected); “Coleção M. Alvarenga [printed] \ Homeotipo [red label, printed] \ TEFE, Amazonas BRASIL, 27 a 31-VII-1956, M. Alvarenga legit [printed] \ signatellus Crotch [handwritten] \ 1779 [printed]”; MNRJ • 1 ♀ (dissected); “Coleção M. Alvarenga [printed] \ Homeotipo [red label, printed] \ TEFE, Amazonas BRASIL, 27 a 31-VII-1956, M. Alvarenga legit [printed] \ Comparado com tipo [printed] Mycotretus signatellus v. imperfectus Crotch, 1876 [handwritten] M. Alvarenga det. 1971 [printed] \ 1778 [printed]”; MNRJ • 1 ♂ (dissected); “Coleção M. Alvarenga [printed] \ Homeotipo [red label, printed] \ TEFE, Amazonas BRASIL, 27 a 31-VII-1956, M. Alvarenga legit [printed] \ Comparado com tipo [printed] Mycotretus signatellus Crotch, 1876 [handwritten] M. Alvarenga det. 1971 [printed] \ DZUP 132790 [printed]”; DZUP • 1 spec.; “Coleção M. Alvarenga [printed] \ TEFE, Amazonas BRASIL, 27 a 31-VII-1956, M. Alvarenga legit [printed] \ DZUP 132792 [printed]”; DZUP • 1 ♂ (dissected); “ Marituba [printed] 24.10 [handwritten] -196 [printed] 1 [handwritten] \ Brasil, P A, J. & B. Bechyné [printed] \ MG [printed] \ 1772 [printed] \ Mycotretus 186 [handwritten]”; MNRJ .

Distribution

North Brazil.

Remarks

There is no morphological difference between the holotype of M. fragosoi ( Fig. 2B ) and the lectotype of M. signatellus ( Fig. 11B ). Despite small differences in body colour between M. signatellus and M. signatellus imperfectus , there are no conspicuous differences in the external morphology and the morphology of their male genitalia. We have also observed that M. signatellus is morphologically similar to M. lacertosus ( Fig. 31E ) based on similarities of their penile flagellum and body color.

Figures

Fig. 11. Crotch primary types (dorsal, labels) cont. A–A’. Lectotype of Mycotretus sericeonitens Crotch, 1876. B–B’. Lectotype of M. signatellus Crotch, 1876. C–C’. Lectotype of M. signatellus imperfectus Crotch, 1876. D–D’. Lectotype of M. succinctus Crotch, 1876. E–E’. Lectotype of M. tricolor Crotch, 1876. Scale bars = 1 mm.

Fig. 2. Alvarenga holotypes (dorsal, labels). A–A’. Mycotretus bistrioculatus Alvarenga, 1983. B–B’. M. fragosoi Alvarenga, 1983. C–C’. M. lopesi Alvarenga, 1989. D–D’. M. luizi Alvarenga, 1983. E–E’. M. octoculatus Alvarenga, 1983. F–F’. M. quadrioculatus Alvarenga, 1983. Scale bars: A–B, D–F = 0.5 mm; C = 1 mm.

Fig. 31. Lacordaire specimens cont. A–D, F. Primary types (dorsal, labels). A–A’. Lectotype of Mycotretus hepaticusLacordaire, 1842. B–B’. Holotype of M. hilaris Lacordaire, 1842. C–C’. Lectotype of M. intermedius Lacordaire, 1842. D–D’. Lectotype of M. jocosus Lacordaire, 1842. E–E’. Specimen of M. lacertosus Lacordaire, 1842 from the Alvarenga collection (MNRJ, Brazil). F–F’. Lectotype of M. lepidus Lacordaire, 1842. Scale bars: A–D, F = 1 mm; E = 0.5 mm.