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Neotropical Xiphocentronidae may have arrived in South America from Central America in the late Miocene or via the Greater Antilles land bridge during the Oligocene. This would give from 10 to 30 Mya of diversification of the family in South America. However, only 11 species were previously known from the Andean foothills. In this study, five new species are described from Peru, four of Xiphocentron (X. ashaninka sp. nov., X. harakbut sp. nov., X. matsigenka sp. nov., X. yine sp. nov.) and one of Machairocentron (M. amahuaca sp. nov.). The new species are most similar to species described from the Yungas of Argentina, and the Pacific dominion of Colombia and Venezuela. The association with species from the Pacific may suggest a species divergences prior to the major Andean uplift and the Amazon basin formation. The spine-like setae on the basal region of the inferior appendage of Xiphocentron were recognized as topologically homologous to the setal brushes on the ventral projection of Caenocentron. Furthermore, based on the morphology of male and female genitalia of Machairocentron, a mating position different from that described for Psychomyiidae is inferred.
Una nueva especie del género Eugnosta Hübner, E. lankinae n.sp. (Lepidoptera: Tortricidae), es descrita para la Provincia de Elqui, Chile. Se entregan los caracteres morfológicos del adulto y las fi guras de la genitalia masculina. Además se discute su posición sistemática con dos especies congéneres Neotropicales.
Two new species of Ageniella Banks, 1912 (Hymenoptera: Pompilidae) from Brazil and updated keys
(2022)
Ageniella Banks, 1912 is a paraphyletic group exclusive to the Nearctic and Neotropical regions. The genus has a remarkable morphological diversity among species and strong sexual dimorphism, hampering taxonomic studies of it. Herein, we add two new species to the Neotropical fauna of Ageniella: A. caerulea sp. nov. belonging to the subgenus Ameragenia and A. ruschi sp. nov. belonging to the subgenus Priophanes; both species are described and illustrated. A brief discussion of subgeneric characters and an updated taxonomic key to the species of Ageniella known from Brazil are provided.
The long-horned caddisfly genus Triplectides Kolenati, 1859 is the most species-rich within Triplectidinae, comprising about 90 species. Eight species have been recorded so far in Brazil, mainly distributed in the Southeast Region, and only one species has been recorded from the North Region. In this paper a new species of Triplectides is described and illustrated, Triplectides nessimiani Desidério & Pes sp. nov., based on adult males from Serra do Aracá, Amazonas, Brazil. We also provide the first record for Brazil of T. neblinus Holzenthal, 1988 and T. nevadus Holzenthal, 1988. In addition, an updated identification key to Triplectides species with occurrence in Brazil is presented.
Megapsyrassa Linsley, 1961 is synonymized with Psyrassa Pascoe, 1866 (Coleoptera: Cerambycidae). Aneflomorpha martini Chemsak and Linsley, 1968 is synonymized with Psyrassa sinaloae Linsley, 1935, and the species is transferred to Aneflomorpha Casey, 1912, new combination. Morphological and chromatic variations in Psyrassa cylindricollis Linsley, 1935 are reported, and a new state record is provided. New records are provided for the following species: Psyrassa atkinsoni (Chemsak and Giesbert, 1986) new combination; P. ebenina Linsley, 1935; and P. nigripes Linsley, 1935. Lastly, four new species of Psyrassa Pascoe, 1866 are described: Psyrassa wappesi García and Santos-Silva, from Mexico (Michoacán); P. sonorensis García and Santos-Silva, from Mexico (Sonora); P. obscuriventris García and Santos-Silva, from Mexico (Jalisco); and P. ocularis García and Santos-Silva, from Guatemala (Zacapa).
ZooBank registration. urn:lsid:zoobank.org:pub:194F7545-EF7C-44B7-9783-286A8BDEB1EC
We describe the first Neotropical troglobitic species of the genus Perigona Castelnau, 1835 from specimens collected in eight caves located in the Arcos-Pains-Doresópolis speleological province (APD), southeastern Brazil. Perigona spelunca sp. nov. is the fourth known microphthalmous species of the genus, and the second of the subgenus Neoperigona. Other specialisations to the subterranean environment include brachyptery, elongation of appendages and orangish brown body coloration. The new species has an umbilicate series of punctures on the 8th stria with 15 setae arranged linearly and not divided in three groups. We also provide historic biogeographical remarks on the new species.
Lissomus quisqueya new species and L. woodruffi new species are described. Both species are reported from the Dominican Republic on the island of Hispaniola. These are the first species of Lissomus Dalman reported from the Greater Antilles. Lissomus quisqueya is recorded from montane mesic forests in the Cordillera Central from Dajadon and La Vega provinces. Lissomus woodruffi is recorded from Barahona, Independencia and Pedernales provinces from montane mesic forest in the Sierra de Bahoruco. Morphologically, these species are most similar to members of the L. discedens Bonvouloir species group from Mesoamerica and South America. Known sites of occurrence of L. quisqueya and L. woodruffi are remnants of formerly more extensive mesic forests. Some of the specimens were found in secondary forests and ecotonal areas at sites near to primary forest or remnants, and all these forests are threatened by anthropogenic activities and stochastic climate changes.
The monotypic Neotropical genus Ectophasiopsis Townsend, 1915 (Diptera, Tachinidae, Phasiinae) is revised, with the addition of two species (one new and another transferred species), and a redefinition of the genus, accompanied by photographs and drawings of specimens and male terminalia. A new combination is proposed, Ectophasiopsis gradata (Wiedemann, 1830) comb. nov., previously Trichopoda Berthold, 1827, and a new species Ectophasiopsis ypiranga sp. nov. is described. A key for the genera of the “Trichopoda typica” subgroup sensu Sabrosky (1950), as well as a key to species of Ectophasiopsis is given. The geographical range of the genus and the host list are updated.
Taxonomic review of the genus Erythrocricus Schubart, 1962 (Diplopoda, Spirobolida, Rhinocricidae)
(2021)
We review the genus Erythrocricus Schubart, 1962 based on the type material of the species Erythrocricus sanguineostriatus (Schubart, 1962). We propose a new diagnosis, redescribe the type species, and propose a new synonymy and a new combination. In addition, a male-based key to both species recognized, including Erythrocricus electrofasciatus (Schubart, 1957), comb. nov. ex. Rhinocricus, is given.
A systematic redefinition of the species belonging to the genus Geomyphilus Gordon and Skelley, 2007 (Coleoptera: Scarabaeidae: Aphodiinae) of Mexico and neighboring countries is presented. The new species G. tuzincola of Mexico is described and figured. The new combination Coelotrachelus macgregori (Islas, 1955) is proposed.