Seis Espécies Novas Do Gênero Mycotretus Chevrolat, 1837, Da Região Amazônica. (Coleoptera, Erotylidae).

2018

Insects

The Neotropical Mycotretus Lacordaire, 1842 is one of the largest and most widespread genera of the Erotylidae, encompassing more than 200 described species. Among the species with a similar body coloration, there is a “group” of six valid species—called here the “tiger” Mycotretus—that possess several pronotal and elytral black spots, as follows: M. tigrinus (Olivier, 1792); M. multimaculatus Taschenberg, 1870; M. centralis Arrow, 1909; M. tigrinoides Mader, 1942; M. tigripennis Mader, 1942; and M. prioteloides Mader, 1942. Different from any other Mycotretus with spots, the spots of the “tiger” Mycotretus are numerous and are not bilaterally symmetrical in pattern. Here, new geographical records, diagnoses and redescriptions are provided for M. tigrinus, M. centralis, M. tigrinoides, M. tigripennis and M. prioteloides, including the first descriptions of their male and female terminalia. Lectotypes are designated for M. multimaculatus, M. centralis, and M. leopardus. Mycotretus multimaculatus and M. tigrinus pardalis Crotch, 1876 are proposed as new junior synonyms of M. tigrinus. Additionally, the authorship of the name M. leopardus is attributed to Crotch, 1876, because he was the first author to provide a description for that taxon, and the synonymy of M. leopardus and M. conspersus (Germar, 1824) with M. tigrinus (Olivier, 1792) is confirmed.

Section: Discussionmentioning

confidence: 99%

Redescriptions, Lectotype Designations, New Synonyms and New Geographic Records for the “Tiger” Species of Mycotretus Lacordaire, 1842 (Coleoptera: Erotylidae: Tritomini)

2018

Insects

“…Through the 20 th century, a few additional Mycotretus descriptions were made by the following authors: Arrow (1909), , Casey (1916), Delkeskamp (1939Delkeskamp ( , 1957. Mader (1940, , , Boyle (1954), and Alvarenga (1983Alvarenga ( , 1989. After Alvarenga (1989), no species was included in Mycotretus until recently, when Mycophtorus peruvianus PECCI-MADDALENA I.S.…”

Section: Taxonomic History Of the Genus Mycotretus Lacordaire 1842mentioning

confidence: 99%

“…Only three primary types (the holotypes of M. tucuruiensis Alvarenga, 1983, M. bistrioculatus Alvarenga 1983and M. lopesi Alvarenga, 1989 had to be dissected. All other primary types were left intact, and paratypes, paralectotypes and other named specimens compared with types were dissected.…”

Section: Morphological Comparisons and Synonymiesmentioning

confidence: 99%

“…Currently, the holotypes of species of Mycotretus described by Alvarenga (1983Alvarenga ( , 1989 and the examined paratypes belonging to MNRJ are provisionally housed in the CELC collection. They correspond to a small sample of specimens that were not consumed by the fire that destroyed the main building of the MNRJ in 2018 (see Kury et al 2018).…”

Section: Locating Typesmentioning

confidence: 99%

“…They correspond to a small sample of specimens that were not consumed by the fire that destroyed the main building of the MNRJ in 2018 (see Kury et al 2018). The destroyed paratypes of species of Mycotretus are the following: 1 paratype of Mycotretus bistrioculatus Alvarenga, 1983; 1 paratype of Mycotretus luizi Alvarenga, 1983; 9 paratypes of Mycotretus quadrioculatus Alvarenga, 1983. Boyle (1956), fixed by Skelley & Goodrich (1994); ICZN (1996).…”

Section: Locating Typesmentioning

confidence: 99%

See 2 more Smart Citations

Catalogue of Mycotretus Lacordaire, 1842 (Coleoptera: Erotylidae: Tritomini): an annotated, illustrated and historical approach

Skelley

2023

EJT

The New World genus Mycotretus Lacordaire, 1842 (Erotylidae: Erotylinae: Tritomini) is the second most speciose genus within Erotylidae and is found mainly in the Neotropical region. Currently, the genus includes 231 available names, of which 204 are valid. Accurate species identification is hampered by the lack of taxonomic revisions, identification keys or an illustrated catalogue for Mycotretus. To correct this problem and to allow further studies, the objective in this paper is to provide an illustrated catalogue for Mycotretus and propose some taxonomic acts promoting taxonomic stability within the genus. The present catalogue is the result of more than six years of morphological studies and careful comparisons of specimens, including research in several scientific collections throughout America and Europe, searching for identified specimens and types of available names of Mycotretus. The historical literature was examined and all available names listed in the catalogue of Blackwelder (1945) are included here, along with updated information from the catalogue of Alvarenga (1994). Our main results are: (i) examination of types of 216 former available names within Mycotretus, including 74 types previously not examined or not located by Alvarenga (1994); (ii) lectotype designations for 143 available names of Mycotretus; (iii) proposal of 41 new synonyms and three new combinations; (iv) the number of valid species of Mycotretus is reduced from 204 to 174; (v) plates providing images (most of them types) of specimens representing most available names within Mycotretus. The present work is the first major step towards a nomenclatural stability that will allow further revisionary and phylogenetic studies on Mycotretus.

Redescription of two species and proposal of a new synonym in the genus Mycotretus Lacordaire, 1842 (Coleoptera: Erotylidae: Tritomini)

2017

Zootaxa

569

Mycotretus Lacordaire, 1842 is a Neotropical genus of beetles, being the second most speciose genus within Erotylidae. The older descriptions of Mycotretus species are anecdotal and none include information on male and female genitalia, which can have great taxonomic value. Our objective in the present work is to redescribe Mycotretus chilensis Crotch, 1876 and Mycotretus trifasciatus Guérin, 1956 providing the first descriptions of their mouthparts, metendosternite, male and female terminalia, as well as new data on their geographic distribution and host fungi. Additionally, the lectotype of M. chilensis is designated and Mycotretus bicinctus Guérin, 1949 is proposed as a new junior synonym of M. chilensis. Both M. chilensis and M. trifasciatus have great intraspecific variation and are sympatric or syntopic in a few localities. We conclude that morphological differences of the penial flagellum and the metendosternite can be used to diagnose species and may also have phylogenetic signal for Mycotretus species. The present work is our first step in an ongoing taxonomic revision of the genus Mycotretus.