Revision of the burrowing beetle genus Llanoterus García and Camacho, 2018 (Coleoptera: Noteridae: Noterini). Part I

• Mauricio García Universidad del Zulia, Maracaibo, Zulia, Venezuela. https://orcid.org/0000-0003-3238-9527
• Alfredo Briceño Universidad del Zulia, Maracaibo, Zulia, Venezuela. https://orcid.org/0000-0001-5902-9340

DOI: https://doi.org/10.5281/zenodo.10439243

Keywords: aquatic beetle, Llanoterus shorti, Neotropics, new species and genus, llano Venezuelan

Abstract

The genus Llanoterus García and Camacho, 2018 is reviewed, with a description of two subgenera determined by the inclination of the labrum: Subgenus Subgnathus as the main characteristic of labrum retroflectum or retracted backwards and subgenus Llanoterus with labrum protactum or directed forward. The subgenus Subgnathus has 36 species grouped into two groups of species: Group Miguelarchangelskyi, species that present deflection in the head, and group Caputcliperectus species that present a hypognathous head. Llanoterus (Subgnathus) subg. nov., is described, with the following combination of characters: -labrum retroflectum-, deflexed to hypognathous head and strongly arched body shape in lateral view and Llanoterus (Llanoterus) subg. nov. (including the type species L. shorti García, Benetti and Camacho, 2012 are detailed in part 2 of the research) is described with the following combination of characters: -labrum protactum- and prognathous head, body shape with the head surface, pronotum or elytra variably arched in lateral view. All the taxa come from two ecological settings in the states Apure and Guárico. The genus Llanoterus is redescribed based on a large set of new characters. All species were captured in light traps at different times. Habitus, differential diagnostic characters of the head, legs and abdominal ventricles, as well as the genital organs of the male, and their geographical distribution in the country are illustrated.

References

AUBé, C. (1836-1838). Hydrocanthares. In: Dejean P.F.: Iconographieet histoire naturelle des coléoptèresd’Europe. Vol. 5. Paris: Méquignon-Marvis, xi + 416 pp + 46 pls. [Pp. 1-64 1836, 65-224 1837, 225-416 1838.]

CROTCh, G. R. (1873). Revision of the Dytiscidae of the United States. Transactions of the American Entomological Society. 4: 383-424.

GARCÍA, M. (2022). Nuevo género Suretonorpus de Venezuela (Coleoptera: Noteridae: Pronoterini). Bol. Cent. Investig. Biol. 56(1): 19-51.

GARCÍA, M. (2019) Nuevo género y tres nuevas especies de coleópteros acuáticos de Venezuela (Coleoptera: Noteridae: Noterini). Revista Chilena de Entomología. 45(3): 379-398.

GARCÍA, M. (2018B). Bicarinaus, nuevo nombre de reemplazo para Bicarina García, 2018 (Coleoptera: Noteridae). Revista de Entomología Chilena. 44(4): 417-418.

GARCÍA, M. (2018A). Bicarina uveritensis y Shepardhydras dytiscoide, dos nuevos coleópteros acuáticos de Venezuela (Coleoptera: Noteridae). Revista Chilena de Entomología. 44 (3): 357-372.

GARCÍA, M., C. J. BENETTI y J. CAMAChO. (2012). A new species of Suphisellus Crotch, 1873 (Coleoptera: Noteridae) from “Los Llanos”, Venezuela. Zootaxa. 3298: 62–68.

GARCÍA, M. y J. CAMAChO. (2018). Un nuevo género de coleóptero acuático de Venezuela (Hydradephaga: Noteridae). UNED Research Journal. 10(1): 172-177.

GARCÍA, M. y E. JIMéNEZ-RAMOS. (2019). Nuevo género de coleópteros acuáticos neotropicales, Jolyssellus, con descripción de nueve especies y una nueva combinación (Coleoptera: Hydradephaga: Noteridae). Bol. Centr. Investig. Biol. 53(2): 92-152.

GóMEZ, R. A. y K. B. MILLER. (2013). Prionohydrus, a new genus of Noterini Thomson (Coleoptera: Noteridae) from South America with three new species and its phylogenetic considerations. Annals of the Entomological Society of America. 106 (1), 1–4.

GUIGNOT, F. (1957). Contribution à la connaissance des dytiscides sudaméricains (Coleopt.). Revue Françaised’Entomologie. 24: 33-45.

SAy, T. (1823). Descriptions of insects of the families of Carabici and Hydrocanthari of Latreille, inhabiting North America. Transactions of the American Philosophical Society N.S.2. (1825)(1): 1-109.

ShARP, D. (1882). On aquatic carnivorous Coleoptera or Dytiscidae. Scientific Transactions of the Royal Dublin Society. (2) 2: 179-1003 + pls. 7-18.