University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Center for Systematic Entomology, Gainesville, Insecta Mundi Florida 2018 A review of the genus Beltia Jacoby (Chrysomelidae: Eumolpinae: Eumolpini), with descriptions of fourteen new species from Costa Rica, Panama, and northwestern South America R. Wills Flowers Florida A&M University, [email protected] Follow this and additional works at: http://digitalcommons.unl.edu/insectamundi Part of the Ecology and Evolutionary Biology Commons, and the Entomology Commons Flowers, R. Wills, "A review of the genus Beltia Jacoby (Chrysomelidae: Eumolpinae: Eumolpini), with descriptions of fourteen new species from Costa Rica, Panama, and northwestern South America" (2018). Insecta Mundi. 1182. http://digitalcommons.unl.edu/insectamundi/1182 This Article is brought to you for free and open access by the Center for Systematic Entomology, Gainesville, Florida at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Insecta Mundi by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. November 30 2018 INSECTA 0672 1–43 urn:lsid:zoobank.org:pub:FD766FC7-F2E5-47D1-96CE- A Journal of World Insect Systematics 9FED2AF7F483 MUNDI 0672 A review of the genus Beltia Jacoby (Chrysomelidae: Eumolpinae: Eumolpini), with descriptions of fourteen new species from Costa Rica, Panama, and northwestern South America R. Wills Flowers Center for Biological Control Florida A&M University Tallahassee, FL 32307, USA Date of issue: November 30, 2018 CENTER FOR SYSTEMATIC ENTOMOLOGY, INC., Gainesville, FL R. Wills Flowers A review of the genus Beltia Jacoby (Chrysomelidae: Eumolpinae: Eumolpini), with descriptions of fourteen new species from Costa Rica, Panama, and northwestern South America Insecta Mundi 0672: 1–43 ZooBank Registered: urn:lsid:zoobank.org:pub:FD766FC7-F2E5-47D1-96CE-9FED2AF7F483 Published in 2018 by Center for Systematic Entomology, Inc. 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Adults of the Neotropical genera Beltia Jacoby (type species: Beltia nicaraguensis Jacoby) and Colas- poides Laporte (type species: Colaspoides limbata [Olivier]) (Chrysomelidae: Eumolpinae: Eumolpini) are difficult to separate. In this paper, the genus Beltia Jacoby is redefined and diagnosed by features of the pygidium, lat- eral wings of the prosternum, and metatibiae to distinguish it from Colaspoides and other medium-sized, ovate Eumolpini. Fourteen new species from Costa Rica, Panama, Colombia, Ecuador, and Peru are described and illustrated—Beltia awapita, B. confusa, B. gorgona, B. herreri, B. ledesmae, B. napoensis, B. osa, B. rugosa, B. sanchezae, B. talaga, B. tilarana, B. tisingalita, B. tsachila and B. vacilona. A key and range maps for all spe- cies recognized herein are provided. Colaspoides placidula Bechynĕ, Colaspoides placidula angustomarginata Bechynĕ, Colaspoides chiriquensis Jacoby, and Colaspoides weyrauchi Bechynĕ are transferred to Beltia and re- described. Colaspoides turrialbana Bechynĕ is synonymized with B. chiriquensis, and Colaspoides chanchamaya Bechynĕ is synonomized with B. weyrauchi. Morphological similarities with Beltia indicate that Old World Cola- spoides also should be removed from Colaspoides s. str. Key words. Colaspoides, Central America, Ecuador, Colombia, Peru, key, taxonomy. Resumen. El género Beltia Jacoby (especie tipo: Beltia nicaraguensis Jacoby) y Colaspoides Laporte (especie tipo: Colaspoides limbata [Olivier]) (Chrysomelidae: Eumolpinae: Eumolpini) son difíciles de separar. En este trabajo, el género Beltia Jacoby es redefinido y diagnosticado por characteres del pigídio, las alas laterales del proesterno, y las metatibias para distinguirlo de Colaspoides y otros géneros de forma ovalada y tamaño mediano en los Eumolpini. Se describe catorce especies nuevas de Costa Rica, Panamá, Colombia, Ecuador, y Perú—Beltia awapita, B. confusa, B. gorgona, B. herreri, B. ledesmae, B. napoensis, B. osa, B. rugosa, B. sanchezae, B. talaga, B. tilarana, B. tisingalita, B. tsachila, y B. vacilona son descritas y ilustradas. Colaspoides placidula Bechynĕ, Colaspoides placidula angustomarginata Bechynĕ, Colaspoides chiriquensis Jacoby, y Colaspoides weyrauchi Bechynĕ son transferidas a Beltia y son redefinidas. Se proponenColaspoides turrialbana Bechynĕ como sinónimo de B. chiriquensis, y Colaspoides chanchamaya Bechynĕ como sinónimo de B. weyrauchi. Se proporcionan una clave y mapas de distribución de todas las especies. Los rasgos morfológicos en común con Beltia señalan que las Colaspoides del Viejo Mundo también deben ser sacadas de Colaspoides s. str. Palabras clave. Colaspoides, América Central, Ecuador, Colombia, Perú, clave, taxonomía. Introduction During routine identifications of Costa Rica eumolpines, I found that collections of the common dark blue Colaspoides unicolor Jacoby often contained a less common and almost identical dark blue beetle that nevertheless differed from Colaspoides Laporte in two small but important details. Colaspoides adults lack a pygidial elytral locking groove (Flowers 1996), whereas the unknown form has a grooved pygidium. Additionally, the surface of the lateral wings of the prosternum in Colaspoides is convex, as well as curved on the anterior edge. In the new form, the surface of these sclerites is flat to concave, although with a similar curved anterior margin. Review of the collections in the National Biodiversity Institute of Costa Rica (INBio; now the Museo Nacional de Costa Rica) as well as the unidentified accu- mulations of Eumolpinae in several other museums revealed other species that superficially appeared to be Colaspoides but possessed pygidial grooves and concave surfaces of the prosternal wings. 2 • INSECTA MUNDI 0672, November 2018 FLOWERS After review of the Neotropical eumolpine genera, I determined that these species share the above characters with the monotypic genus Beltia Jacoby (1881) (Chrysomelidae: Eumolpinae: Eumolpini), which currently contains Beltia nicaraguensis Jacoby. In this contribution, I redefine and revise the genus, describe 14 new species, and expand the distribution to northwestern South America. Materials and Methods Museum Study