Scarabaeinae dung beetles from Ecuador: a catalog, nomenclatural acts, and distribution records

Abstract

The Ecuadorian territory is divided into four natural regions: the coastal lowlands, the Andean highlands, the Amazon basin, and the Galapagos Islands. Each of these regions has its own ecosystems and specific vegetation. The purpose of this work is to compile an updated catalog of the Scarabaeinae (Coleoptera: Scarabaeidae) of Ecuador that includes distributional data and several nomenclatural acts. We compiled data from 25 scientific collections, with the examination of 13,550 scarabaeines; additionally, 390 bibliographic references were reviewed for their taxonomic histories. The Scarabaeinae fauna from Ecuador is represented by 33 genera and 223 species, with 45 range-restricted species; 27 species were erroneously recorded from the country. The following nomenclatural acts are made: (A) two new status as valid species: Canthon (Glaphyrocanthon) ohausi Balthasar, 1939,stat. n., and Deltochilum (Calhyboma) arrowi Paulian, 1939stat. n.; (B) one new synonym:UroxysmagnusBalthasar, 1940 =UroxyslatesulcatusBates, 1891,syn. n.; (C) two revalidated names: Canthidium (Canthidium) orbiculatum (Lucas, 1857) and Dichotomius (Luederwaldtinia) fortepunctatus (Luederwaldt, 1923); and (D) ten lectotypes designated for:ChoeridiumorbiculatumLucas, 1857;ChoeridiumcupreumBlanchard, 1846;CanthidiumcoerulescensBalthasar, 1939;CanthonangustatusHarold, 1867;CanthonangustatusohausiBalthasar, 1939;DeltochilumtessellatumBates, 1870;PinotusfortepunctatusLuederwaldt, 1923;PinotusglobulusFelsche, 1901;UroxyslatesulcatusBates, 1891; andUroxysmagnusBalthasar, 1940. The type specimens related to the new nomenclatural acts are illustrated and the maps of the geographical distribution of all species are provided.

Revalidation and redescription of Deltochilum (Calhyboma) burmeisteri (Coleoptera: Scarabaeidae), with a key to related species

“…Paulian (1939) decided to consider D. burmeisteri as a junior subjective synonym of D. mexicanum. This synonymy was maintained in subsequent works (Chamorro et al, 2018(Chamorro et al, , 2019González et al, 2009;Howden, 1966;Howden & Young, 1981;Pereira & D'Andretta, 1955), despite that earlier taxonomists had recognized differences in body color between northern Mesoamerican and Costa Rican-South American specimens (Bates, 1887;Howden, 1966). The aim of this work is to revalidate and redescribe D. burmeisteri.…”

“…Distributional data were taken from specimen labels, databases (GBIF Secretariat, 2019) and literature (Alvarado et al, 2014;Barretto et al, 2018;Bates, 1887;Chamorro et al, 2018Chamorro et al, , 2019Creedy & Mann, 2011;Escobar & Chacón-de Ulloa, 2000;González et al, 2009;Howden, 1966;Howden & Young, 1981;Huerta et al, 2016;Inward et al, 2011;Medina et al, 2001;Morón & Terrón, 1984;Paulian, 1939;Pereira & D'Andretta, 1955;Ratcliffe et al, 2015;Rös et al, 2012;Solís & Kohlmann, 2012 climático debido a que habitan, casi exclusivamente, en bosques de niebla de montaña bien conservados, uno de los ecosistemas terrestres más amenazados y fragmentados. .…”

Taxonomic revision of the Phanaeus endymion species group (Coleoptera: Scarabaeidae), with the descriptions of five new species

“…Phanaeus funereus was considered by previous authors as a synonym of P. pyrois (Martínez & Pereira 1967;Edmonds 1994;Edmonds & Zídek 2012;Solís & Kohlmann 2012;Chamorro et al 2019). Nevertheless, a diagnosis and a key to separate both species are provided by us.…”

Los escarabajos estercoleros (Coleoptera: Scarabaeidae: Scarabaeinae) del Bosque Protector Oglán Alto, Pastaza, Ecuador

“…El Bosque Protector Oglán Alto alberga el 19.17 % (teniendo en cuenta solamente especies identificadas) de esta riqueza de especies (Chamorro et al, 2018). Sin embargo, de las 45 especies endémicas conocidas para Ecuador (Chamorro et al, 2019), solo 2 especies se encontraron en esta localidad: Bdelyrus genieri Cook, 1998 (Figura 2D) y Scybalocanthon kaestneri (Balthasar, 1939) (Figura 7G) (Cook, 1998;Bezdek & Hajek, 2011;Krajcik, 2012).…”