Mycotretus reticulatus 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 : 50-52

50. Mycotretus reticulatus Crotch, 1876

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

Mycotretus lopesi Alvarenga, 1989: 35 . Type locality: “ BRASIL, Pará: Jacareacanga” [Jacareacanga, in the state of Pará, North Brazil] syn. nov. ( Fig. 2C ).

Mycotretus reticulatus – Gemminger & Harold 1876: 3694. — Kuhnt 1909: 71; 1911: 53. — Blackwelder 1945: 467. — Alvarenga 1994. — 34; Skelley 1998b: 16.

Mycotretus lopesi – Alvarenga 1994: 28.

Primary type

Lectotype, here designated ( Fig. 10C )

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

Other specimens examined

BRAZIL • 1 ♂ (dissected); “Coleção M. Alvarenga [printed] \ Rio Branco, Terr. do Acre BRASIL [printed], I. 1963, M. Alvarenga [handwritten] \ DZUP 132806 [printed]”; DZUP • 1 ♂ (dissected); “Coleção M. Alvarenga [printed] \ Homeotipo [red label, printed] \ CRUZEIRO do SUL, Acre Brasil, II–1963, M. Alvarenga leg. [printed] \ 1832 [printed] \ Mycotretus reticulatus Crotch, 1876 [handwritten] M. Alvarenga det. [printed] 1971 [handwritten]”; MNRJ .

Distribution

North Brazil.

Remarks

The examined specimens of M. reticulatus differ from the holotype of M. lopesi ( Fig. 2C ) only in having the basal elytral fascia interrupted and the body length slightly larger. Two dissected individuals have body colour similar to that of M. reticulatus and are males, whereas the holotype of M. lopesi is a female. It should be evaluated whether such a small variation in colour is a sexual dimorphism. A similar example of sexual dimorphism related to colour variation can be found in M. chilensis Crotch (see Pecci-Maddalena & Lopes-Andrade 2017).

Figures

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. 10. Crotch primary types (dorsal, labels) cont.A–A’. Lectotype of Mycotretus quatuordecimguttatus conjunctus Crotch, 1876.B–B’. Lectotype ofM.rastratus Crotch, 1876. C–C’. Lectotype ofM. reticulatus Crotch, 1876. D–D’. Lectotype of M. sallaei Crotch, 1876. E–E’. Lectotype of M. sanguinosus Crotch, 1876 [synonym of Mycomystes coccineus (Lacordaire, 1842)]. F–F’. Lectotype of M. separandus Crotch, 1876. Scale bars = 1 mm.