Monographische Bearbeitung der Unterfamilie Rhynchitinae (Cure.) 25 



L. = 2,6 mm. 



Heimat: Mexiko: Ventanas in Durango, Tapachula. 



Geschlechtsunterschiede : Nach Sharp hat das einen kürzeren 

 Rüssel als das bei welchem derselbe so lang wie Kopf und Hals- 

 schild zusammen ist. 



Mir lagen 4 Exemplare aus dem Zool. Mus. Berl. (coli. Flohr) 



vor. 



Diese Art weicht durch seinen ganzen Habitus ziemlich er- 

 heblich von allen verwandten Arten ab, weshalb Sharp hierauf eine 

 Unterfamilie errichtete. Es lassen sich aber andererseits schwerlich 

 Merkmale auffinden, die zur Aufstellung einer besonderen U.- 

 Familie ber echtigt ien. Alle Charaktere jedenfalls, die Sharp in 

 der Beschreibung aufführt, treffen mehr oder weniger auch auf 

 andere Arten der Rhynchitinen zu. 



Unbekannt blieb mir: 

 2 A. slossoni. 



Schaeffer, Brooklyn, Mus. Inst. Arts Sei., Bull., 1, 1905, p. 138. 



Reddish testaceous, elytra black with an elongate reddish 

 testaceous humer al Space. Beak slightly curved, punctate in the 

 male, smooth, shining and longer in the female; head transverse, 

 coarsely, sparsely, punctured, eyes rounded, coarsely granulated; 

 antennae inserted close to the eyes on the underside of the beak, 

 straight not geniculate, with a three jointed club equal in both 

 sexes, second joint shorter than first, third joint subequal to the 

 next two, last three joints formingan abrupt club, of which the first 

 and second are nearly alike in width, the last joint narrower,- 

 oval and acuminate at apex. Thorax about twice as wide as long, 

 sides crenate, arcuately narrowing to the front, apex truncate, 

 base feebly arcuate, bind angles obsolete, broadly feebly rounded, 

 disk smooth, shining, punctuation moderately coarse and not 

 dense, intervals extremely finely punctured, given the surface a 

 slight subalutaceous appearance. Elytra not wider at base than 

 the thorax at base, sides gradually but slightly divergent to apex, 

 which is broadly, separately rounded, shorter than the abdomen, 

 leaving the last segment exposed, epipleurae distinct, narrowing 

 to the middle, obsolete behind, surface finely subrugose, punctuation 

 the same as that of the thorax, becoming slightly finer towards 

 apex. Underside of body smooth and shining, metasternum and 

 abdomen with very few fine punctures, middle and bind femora 

 crenate on the Upper margin, tarsi short and broad, apparently 

 four jointed. Length, including the beak, 3,5 mm male, 4,25 mm 

 female. 



Biscayne Bay, Florida. 



Über die Biologie dieser Art sagt Schaeffer: 

 Mrs. Slosson informs rne that the beetlp as well as the larva 

 live in the cone-shaped ?ments of the flowers and fruits of the 

 ,,coonte" (arrow head plant) Zamia integrijolia of the family 

 Cycadaceae. 



8. Heft 



