March 2026: Since the original publication of this tool, one new species of Pseudobeta Zajciw, 1972Zajciw, 1972:
Zajciw, D. 1972. Descricao de um genero novo e uma especie nova de longicorneos neotropicos. Revista Brasileira de Biologia, 32(2): 219–220 was described (Nascimento et al. 2020Nascimento et al. 2020:
Nascimento FEL, Nearns EH, Botero JPR, Santos-Silav A, Martins DS. 2020. New species and new record in Lamiinae from Espírito Santo (Brazil) (Coleoptera: Cerambycidae). Papéis Avulsos de Zoologia. 60:1-12.). This species is added to "Included Species". Other sections in this fact sheet have not been edited to account for the new species.
Elongate-oblong, small to moderate-sized, ranging from about 10–17 mm in length. Integument generally dark brown or black with whitish, ferrugineous, and ochraceous pubescence. Head with frons subquadrate to elongate, about as wide as width of two lower eye lobes. Eyes with lower lobes oblong. Genae subquadrate to elongate, about as tall to distinctly shorter than lower eye lobes. Antennal tubercles prominent, moderately separated; tubercles not armed at apex or armed with a small projection, or with a short, blunt horn. Antennae about as long as overall body length, or as much as 1 2/3 times as long; scape clavate, about as long or shorter than antennomere IV; antennomere III sinuate, longer than scape and antennomere IV. Pronotum transverse, roughly cylindrical to conical, wider at base, with or without lateral tubercles. Elytra with sides roughly parallel; elytral apices individually rounded; elytra with distinct maculae base of elytra without tubercles or with two prominent tubercles at humeri. Basal 1/3 of elytra with moderate to dense punctation, surface coarsely punctate or granulate-punctate. Procoxae without projection or with small acute projection or with distinct, curved hook. Mesosternal process with apex subtruncate to deeply emarginate. Metafemora moderate to short in length, about 1/3–1/4 as long as elytra.
The combination of the following characters will help to distinguish this genus: widely separated eyes; subquadrate to elongate frons; sinuate antennomere III; and elytra with sides roughly parallel.
Superficially resembles Hesychotypa, Ischiosioma, and Prohylus.
South America (Bolivia, Brazil, French Guiana)
Unknown
Unknown
The genus Pseudobeta currently contains five species: P. casariae Nascimento et al., 2020; P. doris (Thomson, 1868Thomson, 1868:
Thomson J. 1868. Révision du groupe des oncidérites (Lamites, cérambycides, coléoptères). Physis Recueil d'Histoire Naturelle. 2(5):41–92.); P. ferruginea Galileo and Martins, 1990Galileo and Martins, 1990:
Galileo, MHM, Martins UR. 1990. Longicornios do museu Paraense Emilio Goeldi I. Novas especies em Sphaerionini e Onciderini (Coleoptera, Cerambycidae). Boletim do Museo Paraense Emilio Goeldi, serie Zoologia. 6(1):11–15.; P. seabrai Monné and Fragoso, 1984Monné and Fragoso, 1984:
Monné MA, Fragoso SA. 1984. Notas sobre Onciderini (Coleoptera, Cerambycidae, Lamiinae). Pesquisa Agropecuária Brasileira. 19(8):925–933.; P. transversa Martins and Galileo, 2010Martins and Galileo, 2010:
Martins UR, Galileo MHM. 2010. Novos táxons em Onciderini (Coleoptera, Cerambycidae, Lamiinae). Revista Brasileira de Entomologia. 54(1):66–71..
More species images are available in the Gallery.
Pseudobeta Zajciw, 1972Zajciw, 1972:
Zajciw D. 1972. Descricao de um genero novo e uma especie nova de longicorneos neotropicos. Revista Brasileira de Biologia. 32(2):219–220
subtribe: Onciderina
type species: Pseudobeta quadrisignata Zajciw, 1972Zajciw, 1972:
Zajciw D. 1972. Descricao de um genero novo e uma especie nova de longicorneos neotropicos. Revista Brasileira de Biologia. 32(2):219–220 [synonym of Hypsioma doris Thomson, 1868]
generic synonymies: Beta Dillon and Dillon, 1945Dillon and Dillon, 1945:
Dillon LS, Dillon ES. 1945. The tribe Onciderini (Coleoptera: Cerambycidae) Part I. Reading, Scientific Publications, Reading Public Museum and Art Gallery, Number 5. 186 pp., preoccupied by Beta Saussure, 1855 [Hymenoptera: Vespidae]
Bezark and Monné (2013)Bezark and Monné (2013):
Bezark LG, Monné MA. 2013. Checklist of the Oxypeltidae, Vesperidae, Disteniidae and Cerambycidae, (Coleoptera) of the Western Hemisphere., Dillon and Dillon (1945)Dillon and Dillon (1945):
Dillon LS, Dillon ES. 1945. The tribe Onciderini (Coleoptera: Cerambycidae) Part I. Reading, Scientific Publications, Reading Public Museum and Art Gallery, Number 5. 186 pp., Martins and Galileo (2010)Martins and Galileo (2010):
Martins UR, Galileo MHM. 2010. Novos táxons em Onciderini (Coleoptera, Cerambycidae, Lamiinae). Revista Brasileira de Entomologia. 54(1):66–71., Monné (2005)Monné (2005):
Monné MA. 2005. Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae. Zootaxa. 1023:1–759., Monné and Fragoso (1984)Monné and Fragoso (1984):
Monné MA, Fragoso SA. 1984. Notas sobre Onciderini (Coleoptera, Cerambycidae, Lamiinae). Pesquisa Agropecuária Brasileira. 19(8):925–933., Nascimento et al. (2020)Nascimento et al. (2020):
Nascimento FEL, Nearns EH, Botero JPR, Santos-Silav A, Martins DS. 2020. New species and new record in Lamiinae from Espírito Santo (Brazil) (Coleoptera: Cerambycidae). Papéis Avulsos de Zoologia. 60:1-12., Thomson (1868)Thomson (1868):
Thomson J. 1868. Révision du groupe des oncidérites (Lamites, cérambycides, coléoptères). Physis Recueil d'Histoire Naturelle. 2(5):41–92., Zajciw (1972)Zajciw (1972):
Zajciw D. 1972. Descricao de um genero novo e uma especie nova de longicorneos neotropicos. Revista Brasileira de Biologia. 32(2):219–220
