Delilah

Diagnostic Features

Description

Elongate-ovate, robust, moderate to large-sized, ranging from about 16–22 mm in length. Integument generally dark brown with whitish, brownish, and ochraceous pubescence. Head with frons elongate, about as wide as width of 1 1/2 to two lower eye lobes. Eyes with lower lobes large, oblong. Genae elongate, about as tall to distinctly taller than lower eye lobes. Antennal tubercles prominent, narrowly separated, contiguous at base; tubercles not armed at apex (females) or armed with a small projection, or with a short, blunt horn (males). Antennae about as long as overall body length (females), or as much as twice as long (males); scape clavate, about as long or longer than antennomere IV; antennomere III nearly straight or curved, longer than scape and antennomere IV; antennomere XI shorter than X (females) or longer than X (males). Pronotum transverse, conical, 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 four prominent, triangular, smooth tubercles at humeri. Basal 1/3 of elytra moderate to dense punctation, surface coarsely punctate to granulate-punctate. Procoxae without projection (females) or with distinct, curved hook (males). Mesosternal process with apex feebly to deeply emarginate. Metafemora moderate in length, about 1/3 as long as elytra.

Diagnosis

The combination of the following characters will help to distinguish this genus: large eyes; conical pronotum; base of elytra with four prominent, triangular, smooth tubercles at humeri; and elytra with sides attenuate.

Similar genus/genera

Superficially resembles Lesbates and Typhlocerus.

Geographic Distribution

South America (Brazil, Peru)

Host Plants/Trees

Unknown

Girdling Behavior

Unknown

Included Species

The genus Delilah currently contains two species: D. gilvicornis (Thomson, 1868Thomson, 1868:
Thomson J. 1868. Révision du groupe des oncidérites (Lamites, cérambycides, coléoptères). Physis Recueil d'Histoire Naturelle. 2(5):41–92.
); D. subfasciata 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.
.

More species images are available in the Gallery.

Taxonomy

Delilah 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: Onciderina
type species: Hypsioma gilvicornis Thomson, 1868Thomson, 1868:
Thomson J. 1868. Révision du groupe des oncidérites (Lamites, cérambycides, coléoptères). Physis Recueil d'Histoire Naturelle. 2(5):41–92.

Selected References

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 (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.
, Monné (2005)Monné (2005):
Monné MA. 2005. Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae. Zootaxa. 1023:1–759.
, Thomson (1868)Thomson (1868):
Thomson J. 1868. Révision du groupe des oncidérites (Lamites, cérambycides, coléoptères). Physis Recueil d'Histoire Naturelle. 2(5):41–92.

 Delilah gilvicornis , male specimen; © E.H. Nearns
Delilah gilvicornis, male specimen; © E.H. Nearns
 Delilah gilvicornis , male specimen; © E.H. Nearns
Delilah gilvicornis, male specimen; © E.H. Nearns
 Delilah gilvicornis , male specimen; © E.H. Nearns
Delilah gilvicornis, male specimen; © E.H. Nearns
 Delilah gilvicornis , male; © E.H. Nearns
Delilah gilvicornis, male; © E.H. Nearns