March 2026: Since the original publication of this tool, one additional species of Tulcus 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. was described (Pérez-Flores and Nearns 2021Pérez-Flores and Nearns 2021:
Pérez-Flores O, Nearns EH. 2021. Two new species of Onciderini Thomson, 1860 (Cerambycidae: Lamiinae) from Mexico and Honduras. Zootaxa. 5026(1):145–150.). This species is added to "Included Species". Other sections in this fact sheet have not been edited to account for the new species.
Elongate-ovate, small to large-sized, ranging from about 9–21 mm in length. Integument generally dark brown or black with whitish, ferrugineous, brown, black, and ochraceous pubescence. Head with frons elongate, about as wide as width of 1 1/2 lower eye lobes. Eyes with lower lobes ovate-oblong. Genae elongate, about as tall or distinctly shorter than lower eye lobes. Antennal tubercles prominent, moderately to narrowly separated; tubercles not armed at apex or armed with a small projection, or with a short, blunt horn, or with a moderately long, blunt horn. Antennae shorter (females) than overall body length, or as much as twice as long (males); scape clavate, about as long or longer than antennomere IV; antennomere III sinuate, longer than scape and antennomere IV. Pronotum transverse, conical, distinctly wider at base, without lateral tubercles. Elytra with sides attenuate; elytral apices individually rounded; elytra generally uniform in coloration or speckled, or with distinct maculae; base of elytra with two prominent tubercles at humeri. Basal 1/3 of elytra with moderate to dense punctation, surface finely punctate, coarsely punctate, or granulate-punctate. Procoxae without projection or with distinct, curved hook. Mesosternal process with apex feebly to deeply emarginate. Metafemora long to moderate in length, about 1/2–1/3 as long as elytra.
The combination of the following characters will help to distinguish this genus: moderately ovate form; sinuate antennomere III; distinctly conical pronotum; base of elytra with two prominent tubercles at humeri; and elytra with sides attenuate.
Strongly resembles Hypsioma.
Central America (all countries); South America (Bolivia, Brazil, Colombia, Ecuador, French Guiana, Peru, Trinidad, Venezuela)
Fabaceae (Lonchocarpus sp.)
Members of this genus are not known to girdle branches (F.T. Hovore, pers. comm.).
The genus Tulcus currently contains 22 species: T. amazonicus (Thomson, 1860Thomson, 1860:
Thomson J. 1860. Essai d'une classification de la famille des cérambycides et materiaux pour servir a une monographie de cette famille. Paris.); T. crudus (Erichson, 1847Erichson, 1847:
Erichson WF. 1847. Conspectus insectorum coleopterorum quae in Republica Peruana observata sunt. Arch. Naturgesch. 13:67–185.); T. diaphorus Martins and Galileo, 2009; T. dimidiatus (Bates, 1865Bates, 1865:
Bates HW. 1865. Contributions to an insect fauna of the Amazon Valley. Coleoptera: Longicornes. The Annals and Magazine of Natural History 3(15):213–225, 382–394; 3(16):101–113, 167–182, 308–314.); T. distinctus (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.); T. fulvofasciatus (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.); T. hebes (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.); T. liturus (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.); T. lycimnius (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.); T. obliquefasciatus (Dillon and Dillon, 1952Dillon and Dillon, 1952:
Dillon LS, Dillon ES. 1952. The tribe Onciderini. Supplementary notes. Annals of the Entomological Society of America. 45(1):59–79.); T. paganus (Pascoe, 1859Pascoe, 1859:
Pascoe FP. 1859. On new genera and species of longicorn Coleoptera. Part IV. Transactions of the Entomological Society of London. 5(2):12–69.); T. pallidus (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.); T. pepoatus (Martins and Galileo, 1996Martins and Galileo, 1996:
Martins UR, Galileo MHM. 1996. Descricoes e notas sobre Cerambycidae (Coleoptera) sul-americanos. Revista Brasileira de Zoologia. 13(2):291–311.); T. picticornis (Bates, 1865Bates, 1865:
Bates HW. 1865. Contributions to an insect fauna of the Amazon Valley. Coleoptera: Longicornes. The Annals and Magazine of Natural History 3(15):213–225, 382–394; 3(16):101–113, 167–182, 308–314.); T. pigrus (Martins and Galileo, 1990Martins and Galileo, 1990:
Martins UR, Galileo MHM. 1990. Onciderini (Coleoptera, Cerambycidae, Lamiinae): sinonimias, novos taxons, chaves e notas. Papeis Avulsos de Zoologia. 37(4):53–95.); T. pullus (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.); T. santossilvai Pérez-Flores and Nearns, 2021Pérez-Flores and Nearns, 2021:
Pérez-Flores O, Nearns EH. 2021. Two new species of Onciderini Thomson, 1860 (Cerambycidae: Lamiinae) from Mexico and Honduras. Zootaxa. 5026(1):145–150.; T. signaticornis (Thomson, 1868Thomson, 1868:
Thomson J. 1868. Révision du groupe des oncidérites (Lamites, cérambycides, coléoptères). Physis Recueil d'Histoire Naturelle. 2(5):41–92.); T. somus (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.); T. subfasciatus (Thomson, 1860Thomson, 1860:
Thomson J. 1860. Essai d'une classification de la famille des cérambycides et materiaux pour servir a une monographie de cette famille. Paris.); T. thysbe (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.); T. tigrinatus (Thomson, 1868Thomson, 1868:
Thomson J. 1868. Révision du groupe des oncidérites (Lamites, cérambycides, coléoptères). Physis Recueil d'Histoire Naturelle. 2(5):41–92.).
More species images are available in the Gallery.
Tulcus 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.
subtribe: Hypsiomina
type species: Hypsioma amazonica Thomson, 1860Thomson, 1860:
Thomson J. 1860. Essai d'une classification de la famille des cérambycides et materiaux pour servir a une monographie de cette famille. Paris.
generic synonymies: Charoides 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.
Bates (1880–1886), 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., Dillon and Dillon (1952)Dillon and Dillon (1952):
Dillon LS, Dillon ES. 1952. The tribe Onciderini. Supplementary notes. Annals of the Entomological Society of America. 45(1):59–79., Erichson (1847)Erichson (1847):
Erichson WF. 1847. Conspectus insectorum coleopterorum quae in Republica Peruana observata sunt. Arch. Naturgesch. 13:67–185., Martins and Galileo (1990)Martins and Galileo (1990):
Martins UR, Galileo MHM. 1990. Onciderini (Coleoptera, Cerambycidae, Lamiinae): sinonimias, novos taxons, chaves e notas. Papeis Avulsos de Zoologia. 37(4):53–95., Martins and Galileo (1996)Martins and Galileo (1996):
Martins UR, Galileo MHM. 1996. Descricoes e notas sobre Cerambycidae (Coleoptera) sul-americanos. Revista Brasileira de Zoologia. 13(2):291–311., Martins and Galileo (2009a)Martins and Galileo (2009a):
Martins UR, Galileo MHM. 2009a. Onciderini (Coleoptera, Cerambycidae, Lamiinae): notas, descricoes, novas combinacoes e chave para grupo de especies de Trachysomus. Papeis Avulsos de Zoologia. 49(13):151–161., Monné (2005)Monné (2005):
Monné MA. 2005. Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae. Zootaxa. 1023:1–759., Pascoe (1859)Pascoe (1859):
Pascoe FP. 1859. On new genera and species of longicorn Coleoptera. Part IV. Transactions of the Entomological Society of London. 5(2):12–69., Pérez-Flores and Nearns (2021)Pérez-Flores and Nearns (2021):
Pérez-Flores O, Nearns EH. 2021. Two new species of Onciderini Thomson, 1860 (Cerambycidae: Lamiinae) from Mexico and Honduras. Zootaxa. 5026(1):145–150., Thomson (1860)Thomson (1860):
Thomson J. 1860. Essai d'une classification de la famille des cérambycides et materiaux pour servir a une monographie de cette famille. Paris., Thomson (1868)Thomson (1868):
Thomson J. 1868. Révision du groupe des oncidérites (Lamites, cérambycides, coléoptères). Physis Recueil d'Histoire Naturelle. 2(5):41–92.
