117 



o, f- 5^'^ 





II. COLEOPTERA RHYNCHOPHORA, PROTERHINIDAE, 

 HETEROMERA AND CIOIDAE. 



By R. C. L. Perkins. 



COLEOPTERA RHYNCHOPHORA. 



Earn. CURCULIONIDAE. 



§ 1. General Remarks on the Curculionidae \ 



The Curculionidae are represented by 137 species, and of these no less than 132 

 are at present only known from the islands. It is probable however that of the others 

 some will be found to be not truly indigenous, so that we will first briefly review the 

 various tribes with respect to these doubtfully indigenous forms. Of the Otiorhynchini 

 the species oi Rhyncogomis are all peculiar to the islands, and the only one to which any 

 suspicion can attach is R. vcstitiis, which in many respects is very different to, and indeed 

 less remarkable than the others. It is the only species which frequents the low lands, 

 and is found upon plants which are known elsewhere, whereas the others are all attached 

 to the forest trees or plants which are themselves loeculiar to the islands. Still on the 

 whole we are disposed to consider it indigenous. The solitary species of Pantomorus 

 on the other hand is certainly an introduced species, as we have found it in gardens in 

 Honolulu, and on Maui it has increased to such an extent as at times to be injurious. 

 The Cyladini are represented only by one species of Cylas known to occur elsewhere, 

 and which is attached to a common coast species oi Ipomoea. No doubt this beetle is a 

 natural immigrant. 



The Cryptorhynchini have 20 species of Acalles, certainly all indigenous, and two 

 other species representing each a different genus. Both appear to be allied to Acalles, 

 the one indeed closely allied, and there is no reason to doubt that both are indigenous. 



The Calandrini have three species of Calandra, two being widely distributed 

 outside the islands. The third is a remarkable species and is attached to cactus and 

 banana, and although not known elsewhere it may well have been imported, and cannot 

 safely be considered indigenous, nor even a natural immigrant. Besides these a single 

 species of Sphenophoriis, the well-known cane-borer of the sugar-planters, is known 

 elsewhere, and is either an importation by man or a natural immigrant. 



' For remarks on the Proterhinidae and other groups see subsequent pages. 



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