Epytus, Dejean 1836

Skelley, Paul E., 2009, Pleasing fungus beetles of the West Indies (Coleoptera: Erotylidae: Erotylinae), Insecta Mundi 2009 (82), pp. 1-94 : 45-46

publication ID	https://doi.org/10.5281/zenodo.5405085
publication LSID	lsid:zoobank.org:pub:1E1E96BA-73BC-4457-9A32-637B0CFC8AE1
DOI	https://doi.org/10.5281/zenodo.5476332
persistent identifier	https://treatment.plazi.org/id/03CE87AB-0C3E-F812-6DA0-9C34FA9374EB
treatment provided by	Felipe (2021-08-06 17:00:39, last updated by Plazi 2023-11-03 19:06:27)
scientific name	Epytus
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Treatment

Genus EPYTUS Dejean 1836

Epytus Dejean 1836: 428 . Type Species: Erotylus cyaneus Duponchel 1825: 562 ; subsequent designation by Crotch 1873b: 144 [after the synonymy of Erotylus violaceus Sturm 1826 under E. cyaneus ] ~ Dejean 1837: 452; Crotch 1873b: 144; Crotch 1876: (57)433; Alvarenga 1965: 84, 88; Alvarenga 1994: 17; Skelley 1998b: 9.

Eptyus Dejean in Peck 2005: 134 [misspelling].

Oocyanus Hope 1841: 110 , 113-114. Type species: Erotylus violaceus Sturm 1826 , original designation. ~ Lacordaire 1842: 31, 194-195; Germar 1843: 133; Jacquelin du Val 1856: 133-134; Guérin-Méneville 1857: 322; Chapuis 1876: 31, 34-35; Gemminger and Harold 1876: 396; Kuhnt 1909: 56, 64; Kuhnt 1911: 44; Deelder 1942: 52; Curran 1944: 1; Blackwelder 1945: 465; Roberts 1958: 283.

Diagnosis. Epytus is recognized by its triangular mental plate, femur lacking marginal bead, antennomere IX as long as wide and angular at base, and anterior pronotal angles projecting forward.

Description. Length: 4.5-7.0 mm; width: 2.5-4.0 mm. Body ovate, flattened, with strong microreticulations, dull, blue color; antennae, labrum, palpi, tibiae and tarsi yellow.

Head with ocular striae present, attaining antennal base anteriorly. Antenna attaining base of pronotum; antennomere II length = width; antennomere VIII wider than VII, appearing a base of club; antennomere IX broad at base, trapezoidal ( Fig. 24 View Figure 18-25 ), length = width, sides angled at base. Mentum with triangular plate, length = width ( Fig. 15 View Figure 12-17 ). Genal lobes present, reduced, short, blunt.

Pronotal disc relatively flattened; anterior angles projecting anteriorly, lateral margin do not curve towards the eyes ( Fig. 79 View Figure 79-80 ); anterior edge with marginal bead only behind eyes; base sinuate, lacking marginal bead. Elytral base lacking marginal bead; epipleural fold with a row of punctures at the lateral edge (occasionally obscure), appearing as a secondary line. Wings present, fully developed.

Prosternal anterior edge with marginal bead, not pinched; base shallowly concave. Mesosternum truncate at base; width = 1.5 x length, lacking coarse punctures; mesosternal line continuous around mesocoxal cavity, divergent anteriorly between coxae; impressed anterior line on the metasternum at suture with mesosternum not covered by mesosternum; mesocoxal line on the metasternum lacking. Meso- and metafemora rounded in cross-section, lacking sharp posterior marginal bead ( Fig. 28 View Figure 26-28 , 80 View Figure 79-80 ).

References

Alvarenga, M. 1965. Especies tipo dos generos e subgeneros neotropicais da familia Erotylidae (Coleoptera). Boletim da Universidade Federal do Parana, Zoologia. 2 (6): 75 - 92.

Alvarenga, M. 1994. Catalogo dos Erotylidae (Coleoptera) Neotropical. Revista Brasiliera de Zoologia 11 (1): 1 - 175.

Blackwelder, R. E. 1945. Checklist of the coleopterous insects of Mexico, Central America, the West Indies, and South America. Part 3. Erotylidae. Bulletin of the United States National Museum 184: 456 - 469.

Chapuis, F. 1876. Tome Douzieme. Famille des Erotliens, des Endomychides et des Coccinellides. 424 p. In: T. Lacordaire and F. Chapuis. Histoire naturelle des Insectes. Genera des Coleopteres ou expose methodique et critique de tous les genres proposes jusqu'ici dans cet ordre d'Insectes. Librairie Encyclopedique de Roret; Paris. [Often cited as Lacordaire 1876 or Lacordaire and Chapuis 1876. The sole author of Tome XII with erotylids is Chapuis]

Crotch, G. R. 1873 b. A list of Erotylidae collected by Edward M. Janson, in the vicinity of Santo Domingo, Chontales, Nicaragua, with descriptions of new genera and species. Cistula Entomologica 1: 141 - 150.

Crotch, G. R. 1876. A revision of the coleopterous family Erotylidae. Cistula Entomologica 1: 377 - 572.

Curran, C. H. 1944. Notes and descriptions of some American Erotylidae. American Museum Novitates 1256: 1 - 14.

Deelder, C. L. 1942. Revision of the Erotylidae (Coleoptera) of the Leiden Museum. Zoologische Mededeelingen 24 (1 - 2): 49 - 115, 5 fig.

Dejean, P. F. M. A. 1836 - 1837 [1837]. Catalogue des Coleopteres de la collection de M. le Comte Dejean. Troisieme Edition, Revue, Corregee et Augmentee. Chez Mequignon - Marvis Pere et Fils; Paris. [1836] 1 - 4: 1 - 384, [1837] 5: 385 - 503 p. [Erotylidae 1837]

Duponchel, P. A. J. 1825. Monographie du genre Erotyle (1). Memoirs du Museum d'Histoire Naturelle, Paris. 12: 30 - 61, 156 - 176, pl. 1 - 2, 7. [Often cited as Duponchel 1824, actual publication date on work is 1825.]

Gemminger, M., and B. von Harold. 1876. Catalogus Coleopterorum, Hacusque descriptorum, synonymicus et systematicus. Tom 12. Chrysomelidae (Pars 2), Languriidae, Erotylidae, Endomychidae, Coccinellidae, Corylophidae, Platypsillidae. Monachii; London. p. 3479 - 3822, i-lxxiii.

Germar, E. F. 1843. Lacordaire's Eintheilung der Erotyliden. Entomologische Zeitung, Stettin 4 (1): 131 - 139.

Guerin-Meneville, M. F. E. 1857. Animaux articules, a pieds articule. p. 1 - 868. In: R. de la Sagra. Histoire physique, politique et naturelle de l'Ile de Cuba. Secunda Parte: Historia natural. Bd. 7. Crustaceos, Aragnides e Insectos. Paris, Arthus Bertrand. 1856: 32 + 371 p., 20 col. taf.; 1857: 87 + 868 p., 15 col. taf. [see Jacquelin du Val 1856]

Hope, F. W. 1841. Observations sur les Erotyles, avec la description de plusieurs nouveaux genres et de quelques especes inedites. Revue Zoologique par la Societe Cuvierienne 4: 109 - 120. [reprint pagination 1 - 12]

Jacquelin du Val, P. N. C. 1856. In: R. Sagra. Historia fisica politica y natural de la Isla de Cuba. Segunda parte. Historia natural, Tomo VII. Crustaceos, Aragnides e Insectos. 371 p. [Figures 1855. Tomo VIII. Atlas de Zoologia: Articulata (Insecta) tab. 11, fig. 10 - 11] [see Guerin-Meneville 1857]

Kuhnt, P. 1909. Coleoptera, fam. Erotylidae, subfam. Erotylinae. In: P. Wytsman (ed.). Genera insectorum. V. Verteneuil & L. Desmet; Brussels. Fasc. 88, 139 p. 4 pl.

Kuhnt, P. 1911. Family Erotylidae. In: W. Junk, Coleopterorum catalogus, Pars 34. Berlin 15: 1 - 103.

Lacordaire, J. T. 1842. Monographie des Erotyliens, Famille de l'Ordre des Coleopteres. Roret; Paris. xiv + 543 p.

Peck, S. B. 2005. A checklist of the beetles of Cuba with data on distributions and bionomics (Insecta: Coleoptera). Arthropods of Florida and neighboring Land Areas 18: vi + 241 p.

Roberts, A. W. R. 1958. On the taxonomy of the Erotylidae (Coleoptera), with special reference to the morphological characters of the larvae. II. Transactions of the Royal Entomological Society London 110 (8): 245 - 285.

Skelley, P. E. 1998 b. Revision of the genus Ischyrus Lacordaire (1842) of North and Central America (Coleoptera: Erotylidae). Occasional Papers of the Florida State Collection of Arthropods 9: 134 p.

Sturm, J. 1826. Catalog meiner insecten-sammlung. Erster Theil. Kafer. Verfasser; Nurnberg. viii + 207 p., 4 col. taf.

Figures

Figure 18-25. Key characters. 18-21) Mesofemur. 22-25) Antenna. 18, 22) Cubyrus sapphirus. 19, 23) Ischyrus quadripunctatus. 20, 24) Epytus cyaneus. 21, 25) Notaepytus flavitarsis.[White arrow points at posterior marginal bead, or note its absence, on mesofemur.]

Figure 12-17. Key characters. 12-15) Ventral view head and mouthparts. 12) Dacne ducke. 13) Antillengis epochthidius. 14) Notaepytus flavitarsis. 15) Epytus cyaneus. 16-17) Anterior diagonal view of head. 16) Altisessor ater. 17) Notaepytus flavitarsis.