Midamiella

Diagnostic Features

Description

Elongate-oblong, moderate-sized, ranging from about 13–15 mm in length. Integument generally dark brown or ferrugineous with whitish, ferrugineous, and ochraceous pubescence. Head with frons subquadrate to elongate, about as wide as width of two lower eye lobes. Eyes with lower lobes ovate. Genae elongate, about as tall as lower eye lobes. Antennal tubercles prominent, widely separated; tubercles not armed at apex or armed with a small projection. Antennae about as long as overall body length, or as much as 1 1/2 times as long; scape clavate, about as long as antennomere IV; antennomere III sinuate, longer than scape and antennomere IV. Pronotum transverse, roughly cylindrical, without lateral tubercles. Elytra with sides roughly parallel; elytral apices individually rounded; elytra generally uniform in coloration or speckled, or with distinct maculae; base of elytra with without tubercles or with two prominent tubercles at humeri. Basal 1/3 of elytra with moderate to dense punctation, surface coarsely punctate to granulate-punctate. Procoxae without projection or with small acute projection. Mesosternal process with apex feebly 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: roughly cylindrical pronotum, without lateral tubercles; sinuate antennomere III; and elytra with sides roughly parallel.

Similar genus/genera

Strongly resembles Pseudobeta and superficially resembles Esonius and Eudesmus.

Geographic Distribution

South America (Argentina, Bolivia, Brazil, Paraguay)

Host Plants/Trees

Unknown

Girdling Behavior

Unknown

Included Species

The genus Midamiella currently contains two species: M. hecabe (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.
); M. santaremensis (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.
).

More species images are available in the Gallery.

Notes

Penteado-Dias (1979)Penteado-Dias (1979):
Penteado-Dias, A.M. 1979. Alguns aspectos da biologia e ontogenia de Midamus hecabe (Coleoptera: Cerambycidae, Lamiinae, Onciderini). Revista Brasileira de Entomologia, 23(1): 9–14.
illustrated the larval and pupal stages of Midamiella hecabe.

Taxonomy

Midamiella Monné, 2005Monné, 2005:
Monné MA. 2005. Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae. Zootaxa. 1023:1–759.

subtribe: Hypsiomina
type species: Midamus hecabe 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.

generic synonymies: Midamus 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.
, preoccupied by Midamus Simon, 1881 [Arachnida: Sparassidae]

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 (1945)Dillon 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.
, Monné (2005)Monné (2005):
Monné MA. 2005. Catalogue of the Cerambycidae (Coleoptera) of the Neotropical Region. Part II. Subfamily Lamiinae. Zootaxa. 1023:1–759.
, Penteado-Dias (1979)Penteado-Dias (1979):
Penteado-Dias AM. 1979. Alguns aspectos da biologia e ontogenia de Midamus hecabe (Coleoptera: Cerambycidae, Lamiinae, Onciderini). Revista Brasileira de Entomologia. 23(1):9–14.

 Midamiella hecabe,  female specimen; © E.H. Nearns
Midamiella hecabe, female specimen; © E.H. Nearns
 Midamiella hecabe,  female specimen; © E.H. Nearns
Midamiella hecabe, female specimen; © E.H. Nearns
 Midamiella hecabe,  female specimen; © E.H. Nearns
Midamiella hecabe, female specimen; © E.H. Nearns
 Midamiella hecabe , female;  © E.H. Nearns
Midamiella hecabe, female; © E.H. Nearns