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Toxorhinus Lacordaire, 1866

Diagnosis: Moderately large, 8-10 mm in total body length; elongate-narrow in form, black or orange-brown with white or yellow markings; rostrum long and slender, as long as elytra and pronotum combined; antennal funicle of 6 articles, not or barely reaching anterior margin of eye, club with basal glabrous article slender and stalk-like; anterior margin of pronotum straight behind eye; legs very long and slender, tarsus of 5 articles, but article 4 small, located at very base of article 3, article 3 much wider than 2 and distinctly bilobed ventrally; front coxae separated; pygydium largely covered by elytra.

Natural history: Adults of Toxorhinus banonii have been collected on babassu palm, Attalea speciosa Mart. ex Spreng. in Rondonia, Brazil.

Diversity: Two species of Toxorhinus are known from Central and South America; one has been recorded in Costa Rica, the other in Panama.

Toxorhinus banonii (Guérin)
Toxorhinus grallarius (Lacordaire)

 

  Key to species of Toxorhinus in Costa Rica and Panama  
1 Dorsum orange-brown with pronotum with pair of parallel paramedian yellow lines, elytra with sutural and second intervals similarly yellow throughout length T. grallarius (Lacordaire)
  - Dorsum black with slender, elongate “X” shaped white mark on pronotum and elytra T. banonii (Guérin)

 


Toxorhinus banonii (Guérin)

Distribution: Panama; also in South America.

Natural history: In Rondonia, Brazil, adults have been collected in numbers on babassu palm, Attalea speciosa Mart. ex Spreng. Adults worked their way into the cracks and were feeding on the freshly opened interior of the palm frond.


Toxorhinus grallarius (Lacordaire)

Distribution: Costa Rica; also in South America.

Natural history: No significant information.

 
 

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