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Eight new species of Ecuadorian Ptiliidae are described and figured: Nossidium harrietae sp. nov., Ptenidium robustum sp. nov., P. tauriforme sp. nov., P. triangulum sp. nov., Notoptenidium brunneum sp. nov., Americoptilium nigrescens sp. nov., Discheramocephalus nigerrimus sp. nov. and D. striatus sp. nov. The insects were collected by J. McClarin, 2017–2018, in the Napo Province to the southeast of the capital Quito.
The fi rst natural history account of Discomorpha (Discomorpha) biplagiata (Guérin) (Chrysomelidae: Cassidinae: Omocerini) from Ecuador is presented. Larvae and adults feed on the leaves and stems of Cordia hebeclada Johnst. (Boraginaceae), the fi rst documented host plant for the species. Oviposition and pupation also occur on this host. Young larvae suffered heavy predation, especially from Ectatomma sp. (Formicidae: Ponerinae) and Oplomus nr. marginalis (Pentatomidae: Asopinae).
Expeditions of Ron Brechlin, Viktor Synjaev, Mildred Márquez, Juan Machado, Oleg Romanov and other colleagues over the last five years in Colombia, Ecuador and Bolivia have resulted in significant collections of Pterophoridae Zeller, 1841. The article describes five new species: Singularia brechlini Kovtunovich & Ustjuzhanin sp. nov., Singularia sinjaevi Kovtunovich & Ustjuzhanin sp. nov., Singularia guajiro Kovtunovich & Ustjuzhanin sp. nov., Singularia tolima Kovtunovich & Ustjuzhanin sp. nov. and Singularia lesya Kovtunovich & Ustjuzhanin sp. nov.
The genus Eulibitia was described by Roewer including three species from Colombia and Ecuador: Eulibitia maculata Roewer, 1912, E. annulipes Roewer, 1912 and E. sexpunctata Roewer, 1914. Herein, the genus is revisited and only the type species, Eulibitia maculata Roewer, 1912 is maintained from the previous configuration. Eulibitia sexpunctata is transferred to Ambatoiella Mello- Leitão, 1943 and E. annulipes is considered as Cosmetinae incertae sedis. Acromares lateralis Goodnight & Goodnight, 1943 and Paramessa castanea (Sørensen, 1932) are here considered junior subjective synonyms of Messatana scalaris (Sørensen, 1932) and Eulibitia maculata, respectively. Brachylibitia Mello-Leitão, 1941, currently a junior synonym of Platymessa, is regarded as a synonym of Eulibitia. Platymessa Mello-Leitão, 1941, with two species, and the monotypic genera Messatana Strand, 1942 and Paramessa Mello-Leitão, 1933, are synonymized with Eulibitia Roewer, 1912, yielding the following new combinations: Eulibitia ectroxantha (for Brachylibitia ectroxantha Mello-Leitão, 1941), E. h-inscriptum (for Platymessa h-inscripta Mello-Leitão, 1941) and E. scalaris (for Libitia (Messa) scalaris Sørensen, 1932). Eulibitia is re-diagnosed and five new species are described: E. castor sp. nov., E. pollux sp. nov., E. clytemnestra sp. nov., E. leda sp. nov. and E. helena sp. nov. A key to the nine Eulibitia species is presented; the morphology of Eulibitia is compared with that of Libitia, Libitiella and Ambatoiella.
Integrative taxonomy of the genus Dyscolus (Coleoptera, Carabidae, Platynini) in Ecuadorian Andes
(2020)
The genus Dyscolus Dejean, 1831 is a highly speciose taxon of neotropical Carabidae and the major component of high-altitude ground beetle communities in the tropical Andes. The aim of this study is threefold: (i) refine the taxonomic position of the equatorial members of Dyscolus using molecular data, (ii) provide a delimitation of the species found in Ecuador in páramo and montane forest environments based on a robust combination of molecular and morphological data, (iii) describe the new species and take the nomenclatural decisions made necessary by the results of this study. The seclusion of Dyscolus from more basal platynine clades including Platynus, Batenus and Glyptolenus, is supported by a phylogenetic analysis of the COI marker. Twenty-five new species of Dyscolus, most of them microendemic, are described and illustrated: D. aquator Moret sp. nov. (Tandayapa, Pichincha), D. arauzae Moret sp. nov. (Mt Cayambe, Pichincha), D. arborarius Moret sp. nov. (Parque Nacional Yacuri, Loja), D. barragani Moret sp. nov. (Mt Ayapungu, Chimborazo), D. crespoae Moret sp. nov. (Parque Nacional Podocarpus, Zamora-Chinchipe), D. danglesi Moret sp. nov. (Parque Nacional Yacuri, Loja), D. donosoi Moret sp. nov. (Parque Nacional Podocarpus, Zamora-Chinchipe), D. eleonorae Moret sp. nov. (Cotopaxi and Pichincha provinces), D. famelicus Moret sp. nov. (Papallacta, Napo), D. giselae Moret sp. nov. (Reserva Otonga, Cotopaxi), D. globoculus Moret sp. nov. (Parque Nacional Podocarpus, Zamora-Chinchipe), D. gobbii Moret sp. nov. (Guamaní and Mt Antisana, Pichincha), D. incommunis Moret sp. nov. (Tandayapa, Pichincha), D. marini Moret sp. nov. (Parque Nacional Podocarpus, Loja), D. piscator Moret sp. nov. (Guamaní, Napo), D. placitus Moret sp. nov. (Guamaní, Napo), D. ravidus Moret sp. nov. (Parque Nacional Podocarpus, Loja), D. rivinus Moret sp. nov. (Reserva Otonga, Cotopaxi), D. rugitarsis Moret sp. nov. (Parque Nacional Yacuri, Loja), D. ruizi Moret sp. nov. (Parque Nacional Podocarpus, Loja and Zamora), D. salazarae Moret sp. nov. (Parque Nacional Podocarpus, Loja), D. silvestris Moret sp. nov. (Papallacta, Napo), D. sulcipedis Moret sp. nov. (Parque Nacional Yacuri, Loja), D. verecundior Moret sp. nov. (Mt Illiniza and Mt Corazón, Pichincha) and D. verecundissimus Moret sp. nov. (Mt Chimborazo, Chimborazo). Dyscolus palatus Moret, 1998 is newly synonymized with D. denigratus (Bates, 1891). We demonstrate the subgenus Hydrodyscolus Moret, 1996 to be polyphyletic and therefore consider it a junior synonym of Dyscolus Dejean, 1831.
Six new species of false click beetle (Coleoptera: Eucnemidae) are described. These new species are: Fornax dixiensis sp. nov. (Florida, USA), Dromaeolus comayaguiensis sp. nov. (Honduras), Asiocnemis bicolor sp. nov. (Ecuador), Miruantennus chinensis sp. nov. (Yunnan prov., China), Miruantennus cuneiformis sp. nov. (Malaysia) and Nematodes africanus sp. nov. (Côte d’Ivoire). Identifi cation keys are provided for species of Fornax in the Nearctic ecozone and Miruantennus in the Palearctic and Indo-Malayan ecozones. A new key to include all the genera within the tribe Nematodini Leiler is also provided.