Mycotretus opalescens 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 : 44-45

41. Mycotretus opalescens Crotch, 1876

Mycotretus opalescens Crotch, 1876: 444 . Type locality: “Santarem” [Santarém, in the state of Pará, North Brazil. Type locality not clearly separated from other localities in the original description, although it is unequivocally mentioned on the type label].

Mycotretus pelliciens Kirsch, 1876: 100 . Type locality: “ Peru ” syn. nov. ( Fig. 23A ).

Mycotretus opalescens – Gemminger & Harold 1876: 3694. — Kuhnt 1909: 76; 1911: 51. — Blackwelder 1945: 467. — Delkeskamp 1957: 99. — Alvarenga 1994: 31. — Skelley 1998b: 16. — McHugh & Chaboo 2015: 278.

Mycotretus pelliciens – Gemminger & Harold 1876: 3694. — Kuhnt 1909: 76; 1911: 52. — Mader 1942: 174; 1951: 219. — Blackwelder 1945: 467. — Alvarenga 1994: 32. — McHugh & Chaboo 2015: 278.

Primary type

Lectotype, here designated ( Fig. 8F )

BRAZIL • “TYPE [blue label, printed] \ TYPE. [printed], opalescens Santar. B. [handwritten] \ LECTOTYPE [printed], Mycotretus opalescens Crotch, 1876 [red label, handwritten]”; UMZC.

Other specimens examined

Paralectotypes

BRAZIL • 2 specs; “blue square [unwritten] \ Bates [printed] \ PARATYPE [blue label, printed] \ PARALECTOTYPE [printed], Mycotretus opalescens Crotch, 1876 [yellow label, handwritten]”; UMZC • 1 spec.; “ PARATYPE [blue label, printed] \ green square [unwritten] \ Bates [printed] \ PARALECTOTYPE [printed], Mycotretus opalescens Crotch, 1876 [yellow label, handwritten]”; UMZC • 1 spec.; “ PARATYPE [blue label, printed] \ Bates [printed] \ PARALECTOTYPE [printed], Mycotretus opalescens Crotch, 1876 [yellow label, handwritten]”; UMZC .

Additional material

BRAZIL • 1 spec.; “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 opalescens Crotch, 1876 [handwritten] M. Alvarenga det. 1971 [printed] \ 1964 [printed] \ DZUP 136194 [printed]”; DZUP • 1 spec.; “Coleção M. Alvarenga [printed] \ Estirão do Equador, Amazonas, Brasil X.1979, M. Alvarenga [printed] \ M [printed] \ mycotr. 723 [handwritten] \ peliciens? [handwritten]”; MNRJ • 1 spec.; “Coleção M. Alvarenga [printed] \ TEFE, Amazonas BRASIL, 27 a 31-VII-1956, M. Alvarenga legit [printed] \ DZUP 136195 [printed]”; DZUP .

BOLIVIA • 1 spec.; “BOLIVIA, tropica Region CHAPARÉ (400 mtr.) DIRINGS [front] JUN 1954 [back] [printed] \ Mycotretus opalescens Crotch [printed] \ Mycotretus opalescens [handwritten]”; MZSP • 1 spec.; “ BOLIVIA, tropica Region CHAPARÉ (400 mtr.) DIRINGS [front] JUN 1954 [back] [printed] \ Mycotretus opalescens Crotch [printed]”; MZSP .

Distribution

Bolivia, North Brazil, Peru.

Remarks

Mycotretus opalescens differs from M. pelliciens especially in the two central and elongated, barely separated pronotal spots and the basal elytral band with a small yellowish area close to the humeral angle. Aside from these small differences in coloration, which is expected to occur in conspecific Mycotretus from different localities, there is no morphological difference between these species to consider them separated entities.

Figures

Fig. 23. Primary types (dorsal, labels). A–A’. Lectotype of Mycotretus pelliciens Kirsch, 1876. B–B’. Lectotype of M. peruvianus (Kirsch, 1876) [present combination Mycomystes peruvianus (Kirsch)]. C–C’. Lectotype of M. puncticeps Kirsch, 1865. D–D’. Lectotype of M. suturalis Kirsch, 1876. E–E’. Lectotype of M. bicoloratus Kuhnt, 1911 [= M. bicolor Kirsch, 1876 (invalid name)]. F–F’. Lectotype of M. derasofasciatus Kuhnt, 1910. Scale bars: A–E = 1 mm; F = see Material and methods.

Fig. 8. Crotch primary types (dorsal, labels) cont. A–A’. Lectotype of Mycotretus mycetophagoides erythrocerus Crotch, 1876. B–B’. Lectotype of M. mycetophiloides Crotch, 1876;. C–C’. Lectotype of M. mycetophiloides careus Crotch, 1876. D–D’. Lectotype of M. nigrotinctus Crotch, 1876. E–E’. Lectotype of M. nitescens Crotch, 1876. F–F’. Lectotype of M. opalescens Crotch, 1876. Scale bars = 1 mm.