Psilurnus Weise 1900 218.
Silurnus Weise 1910: 103.
Alurnus brunnea Thunberg (=Alurnus corallina Vigors).
Coraliomela can be distinguished by the following combination of characters:
Body large (21-35 mm), elongate ellipse; color generally red or black.
Head: flat or slightly convex between eyes; fronsfrons:
upper anterior portion of head capsule above the clypeus
with small depressions on anterior margin; interantennal keel absent; sulci near eyeeye:
elongate, slightly prominent, multifaceted; usually slightly kidney-shaped
faint; punctation dense and irregular.
Antenna: short, barely reaching base of pronotumpronotum:
occupies all of dorsal part of the prothorax; in anterior angles or posterior angles there may be a small tubercle or pore with a seta
; with 11-antennomeres; antennomere 3 not as long as 4 to 5 combined; 4 shorter than 3.
Pronotum: transverse; slightly narrowing anteriorly; lateral margins almost parallel; densely punctate; slight basal impression present on each side of middle; with tuft of setae in each angle.
Scutellum: triangular.
Elytron: wider than pronotumpronotum:
occupies all of dorsal part of the prothorax; in anterior angles or posterior angles there may be a small tubercle or pore with a seta
; punctation irregular, impressed; vestige of irregular costae visible; margined laterally.
Venter: rugose.
Argentina, Bolivia, Brazil, and Paraguay.
Number of species: 4 (Staines 2012). Key to species Fischer (1935).
Allagoptera, Arecastrum, Attalea, Cocos, Copernicia, Elaeis, Euterpe,Phoenix, Syagrus, (Arecaceae).
Fischer, C. R. 1935. Os coleopteros phytophagos da tribu Alurnini, pragas das palmeiras (Chrysomelidae, Hispinae). Revista de Entomologica Rio de Janiero 5:257-292.
Jacobson, G. G. 1899. De genere Alurno (Coleoptera, Chrysomelidae). Annuaire du Musée Zoologique de l'Académie Impériale des Sciences St. Pétersbourgh 4:245-256.
Staines, C. L. 2012. Tribe Alurnini. Catalog of the hispines of the world (Coleoptera: Chrysomelidae: Cassidinae). http://entomology.si.edu/Collections_Coleoptera.html
Weise, J. 1900. Eine neue Alurnus-Form. Deutsche Entomologische Zeitschrift 1900:218-219.
Weise, J. 1910. Beitrag zur Kenntnis der amerikanischen Hispinen. Archiv für Naturgeschichte 76: 67-127.