Ithystenus hollandiae, copyright tjeales.

Belongs within: Brentidae.

The Ithystenini are a primarily Indo-Pacific group of weevils with outlying representatives in South America and Madagascar. Members have notably long and slender antennal segments, including in the club, and each elytron bears a slender, acute, conical, spiniform, caudal process well isolated from the suture by two or three interval spaces (Zimmerman 1994).

<==Ithystenini [Ithystenides, Ithystenina]B14
    |--Lasiorhynchus barbicornis (Fabricius 1775)B14
    |--Mesetia Blackburn 1896Z94
    |    `--*M. amoena Blackburn 1896 [=Ithystenus (Mesetia) amoena]Z94
    `--Ithystenus Pascoe 1862 (see below for synonymy)Z94
         |--*I. angustatusZ94 [=Brenthus angustatusB35, Leptorhynchus angustatusZ94]
         |--I. barbirostris Kleine 1920Z94
         |--I. bicolor [=Leptorrhynchus bicolor]Z94
         |--I. frontalis Pascoe 1862Z94
         |--I. hollandiae (Boisduval 1835) [=Brentus hollandiae, Leptorrhynchus hollandiae]Z94
         |--‘Leptorrhynchus’ linearisM86
         `--I. sabulosus Kleine 1919Z94

Ithystenus Pascoe 1862 [incl. Leptorhynchus Guérin-Méneville 1838 non Clift 1828, Leptorrhynchus Gemminger & Harold 1872]Z94

*Type species of generic name indicated


[B35] Boisduval, J. B. 1835. Voyage de Découvertes de l’Astrolabe. Exécuté par ordre du Roi, pendant les années 1826–1827–1828–1829, sous le commandement de M. J. Dumont d’Urville. Faune entomologique de l’océan Pacifique, avec l’illustration des insectes nouveaux recueillis pendant le voyage vol. 2. Coléoptères et autres ordres. J. Tastu: Paris.

[B14] Bouchard, P. (ed.) 2014. The Book of Beetles: A lifesize guide to six hundred of nature’s gems. Ivy Press: Lewes (United Kingdom).

[M86] Macleay, W. 1886. The insects of the Fly River, New Guinea, “Coleoptera” (continued). Proceedings of the Linnean Society of New South Wales, series 2, 1 (1): 183–204.

[Z94] Zimmerman, E. C. 1994. Australian Weevils (Coleoptera: Curculionoidea) vol. 2. Brentidae, Eurhynchidae, Apionidae and a chapter on immature stages by Brenda May. CSIRO Australia.

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