Synthlibonotus

Synthlibonotus
	Habitus of Synthlibonotus scapha
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Coleoptera
Infraorder:	Cucujiformia
Family:	Curculionidae
Tribe:	Eustylini
Genus:	Synthlibonotus; Schönherr, 1847

Synthlibonotus is a genus of broad-nosed weevils in the family Curculionidae distributed in northern South America.[1]

Taxonomy

Synthlibonotus belongs in the tribe Eustylini. It was described for the first time by Carl Johan Schönherr in 1847 (p. 41).[2]

Description

The genus Synthlibonotus was characterized by Schönherr as follows:

Antennae longiusculae, minus tenues; scapus oculos superans, sensim incrassatus, articulis duobus basalibus funiculi longiusculis, reliquis gradatim paullo brevioribus, omnibus obconicis; clava elongata, subovali.

Rostrum breviusculum, crassiusculum, subteres, apice paullo crassius.

Oculi rotundati, nonnihil convexi.
Elytia ovalia, basi truncata, dorso antice deplanata.
— Schönherr, Mantissa secunda familiae curculionidum., p. 41.

Synthlibonotus resembles some members of the genus Exophthalmus but can be distinguished by their long antennal scapes that reach beyond the anterior margin of the pronotum. The scale coverage can be relatively dense and uniform or essentially absent. There is noticeable sexual dimorphism, with females much broader than males.

Distribution

Members of the genus Synthlibonotus can be found in Mexico, Guatemala, Colombia, and Venezuela.[1][3]

Species

The genus contains three described species:[3]

Synthlibonotus rufipes Schönherr, 1847: 41:[2] Colombia, Venezuela.
Synthlibonotus scapha Faust, 1892: 18:[4] Venezuela.
Synthlibonotus viator Chevrolat, 1880: XLII:[5] Guatemala, Mexico.

References

Alonso-Zarazaga, M. A.; Lyal, C. H. C. (1999). A world catalogue of families and genera of Curculionoidea (Insecta: Coleoptera) excluding Scolytidae and Platypodidae (PDF). Barcelona, Spain: Entomopraxis. pp. 315 pp.
Schönherr, C.J. (1847). Mantissa secunda familiae curculionidum. Seu descriptiones novorum quorundam generum curculionidum. Holmiae: Typis Norstedt et filii. pp. 86 pp.
Wibmer, G. J.; O’Brien, C. W. (1986). "Annotated checklist of the weevils (Curculionidae sensu lato) of South America (Coleoptera: Curculionoidea)". Memoirs of the American Entomological Institute. 39: 1–563.
Faust, J. (1892). "Reise von E. Simon in Venezuela. Curculionidae. Pars prima". Stettiner Entomologische Zeitung. 53: 1–44.
Chevrolat, L.A.A. (1880). "Note sur le genre de Curculionides Synthlibonotus de Schönherr". Annales de la Société Entomologique de France. Série 5. 10: XLII–XLIII.

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[:0-1] Alonso-Zarazaga, M. A.; Lyal, C. H. C. (1999). A world catalogue of families and genera of Curculionoidea (Insecta: Coleoptera) excluding Scolytidae and Platypodidae (PDF). Barcelona, Spain: Entomopraxis. pp. 315 pp.

[:2-2] Schönherr, C.J. (1847). Mantissa secunda familiae curculionidum. Seu descriptiones novorum quorundam generum curculionidum. Holmiae: Typis Norstedt et filii. pp. 86 pp.

[:1-3] Wibmer, G. J.; O’Brien, C. W. (1986). "Annotated checklist of the weevils (Curculionidae sensu lato) of South America (Coleoptera: Curculionoidea)". Memoirs of the American Entomological Institute. 39: 1–563.

[4] Faust, J. (1892). "Reise von E. Simon in Venezuela. Curculionidae. Pars prima". Stettiner Entomologische Zeitung. 53: 1–44.

[5] Chevrolat, L.A.A. (1880). "Note sur le genre de Curculionides Synthlibonotus de Schönherr". Annales de la Société Entomologique de France. Série 5. 10: XLII–XLIII.