Oncid ID: Tool for Diagnosing Adult Twig Girdlers (Cerambycidae: Lamiinae: Onciderini)
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Genus: Lochmaeocles

Diagnostic Features
  • Description: Elongate-oblong, robust, small to large-sized, ranging from about 11–30 mm in length. Integument generally dark brown, ferrugineous, or black with whitish, ferrugineous, and ochraceous pubescence. Head with frons subquadrate, about as wide as width of two lower eye lobes. Eyes with lower lobes ovate-oblong. Genae subquadrate to elongate, distinctly shorter than lower eye lobes. Antennal tubercles prominent, moderately separated; tubercles not armed at apex (females) or armed with a small projection, or with a short to moderately long, blunt or acute horn directed forward (males); antennae about as long as overall body length, or as much as twice as long; scape clavate, about as long or shorter than antennomere IV; antennomere III variable in shape, from nearly straight to curved to sinuate, longer than scape and antennomere IV; antennomere XI shorter than X (females) or longer than X (males). Pronotum transverse, roughly cylindrical to conical, wider at base, with lateral tubercles. Elytra with sides roughly parallel; elytral apices individually or jointly rounded; elytra generally uniform in coloration or speckled, or with distinct maculae; base of elytra without tubercles or with two prominent tubercles at humeri, often with several additional prominent, shiny tubercles. Basal 1/3 of elytra with sparse to dense punctation, surface finely punctate, coarsely punctate, or granulate-punctate. Procoxae without projection, or with an obtuse tubercle. Mesosternal process with apex subtruncate to deeply emarginate. Metafemora moderate to short in length, about 1/3–1/4 as long as elytra.

  • The combination of the following characters will help to distinguish this genus: subquadrate frons; strongly transverse pronotum, roughly cylindrical to slightly conical, with lateral tubercles; base of elytra with two prominent tubercles at humeri; and elytra with sides roughly parallel to slightly attenuate.

  • Similar genus/genera: superficially resembles Ischioderes, Oncideres, and Tybalmia.
Geographic Distribution
  • North America (USA)
  • Central America (all countries)
  • South America (Argentina, Bolivia, Brazil, Colombia, Ecuador, El Salvador, French Guiana, Guyana, Paraguay, Peru, Trinidad & Tobago, Uruguay, Venezuela)
Host Plants/Trees
  • Caesalpiniaceae (Delonix regia, Parkinsonia aculeata, Peltophorum dubium); Malvaceae (Gossypium sp.); Mimosaceae (Acacia decurrens, A. farnesiana, A. felicioides, A. sphaerocephala, Balizia pedicellaris, Cathormion polyanthum, Enterolobium controtisiliquum, Abarema curvicarpa, Enterolobium cyclocarpum, Inga sp., Samanea saman, Leucaena pulverulenta); Myrtaceae (Eucalyptus sp.); Papilionaceae (Dalbergia nigra); Rubiaceae (Coffea arabica [coffee]); Salicaceae (Salix nigra, Populus fremontii); Ulmaceae (Celtis laevigata)
Girdling Behavior
  • Some species in this genus are known to girdle branches (M.A. Monné & Frank Hovore, personal communication).

The genus Lochmaeocles has 25 species:
  Lochmaeocles alboplagiatus Dillon & Dillon, 1946
  Lochmaeocles basalis Dillon & Dillon, 1946 [holotype specimen, ♂]
  Lochmaeocles batesi (Aurivillius, 1923)
  Lochmaeocles callidryas (Bates, 1865) [syntype specimen, ♂]
  Lochmaeocles confertus (Aurivillius, 1923)
  Lochmaeocles congener (Thomson, 1868) [type specimen, ♂]
  Lochmaeocles congener (Thomson, 1868) [=O. vermiculata type specimen, ♀]
  Lochmaeocles c. consobrinus Dillon & Dillon, 1946 [holotype specimen, ♂]
  Lochmaeocles c. cornuticeps (Schaeffer, 1906) [♂ specimen]
  Lochmaeocles c. pacificus Dillon & Dillon, 1946 [paratype specimen, ♂]
  Lochmaeocles cretatus Chemsak & Linsley, 1986 [type specimen]
  Lochmaeocles fasciatus (Lucas, 1857) [type specimen, ♂]
  Lochmaeocles grisescens Noguera & Chemsak, 1993
  Lochmaeocles hondurensis Dillon & Dillon, 1946 [holotype specimen, ♂]
  Lochmaeocles laticinctus Dillon & Dillon, 1946 [holotype specimen, ♂]
  Lochmaeocles leuripennis Martins & Galileo, 1995
  Lochmaeocles marmoratus Casey, 1913 [♂ specimen]
  Lochmaeocles nigritarsus Chemsak & Linsley, 1986
  Lochmaeocles obliquatus Dillon & Dillon, 1946
  Lochmaeocles pseudovestitus Chemsak & Linsley, 1988
  Lochmaeocles pulcher Dillon & Dillon, 1946
  Lochmaeocles salvadorensis (Franz, 1954) [type specimen, ♀]
  Lochmaeocles sladeni (Gahan, 1903) [type specimen, ♂]
  Lochmaeocles sparsus (Bates, 1880) [type specimen, ♂]
  Lochmaeocles t. tessellatus (Thomson, 1868) [type specimen]
  Lochmaeocles vestitus (Bates, 1885)
  Lochmaeocles zonatus Dillon & Dillon, 1946 [holotype specimen, ♂]
  • Duffy (1960) described the larva and pupa of Lochmaeocles fasciatus.
  • Specimens of this genus have been collected at MV & UV light.
  • indicates species native to the USA.

    Generic Synonymies
    • The type species of this genus was originally described in the genus Oncideres. The genus Ischiomaeocles was recently synonymized with Lochmaeocles.
    Selected References

    Lochmaeocles cornuticeps
    ♂ specimen
    © E.H. Nearns


    © 2011-2015 Nearns, E.H., Lord, N.P., and K.B. Miller
    The University of New Mexico and Center for Plant Health Science and Technology, USDA, APHIS, PPQ.