02288nas a2200169   4500008004100000020001400041245017200055210006900227260001200296300001000308490000700318520160500325653001601930653001601946100002101962856013501983       2007                        eng d  a0210-945X00aRhyncogonus and Laparocerus (Coleoptera, Curculionidae, Entiminae), a parallel case of success in island evolution. Report of a study trip to Moorea, Tahiti and Rurutu0 aRhyncogonus and Laparocerus Coleoptera Curculionidae Entiminae a  cOctubre  a61-760 v353 aThis Is a report ot a study trip to the islands of Moorea, Tahiti and Rurutu to compare the Polynesian weevil genus Rhyncogonus with the Macaronesian genus Laparocerus, in the Atlantic. Both genera have radiated in these archipelagos, and the species are flightless and mostly single-island endemics. The general geological and environmental conditions in both archipelagos are briefly discussed and snapshots of both groups of weevils are provided. Common features are highlighted (wingless, endemicity, etc.) as well as some differences observed (nocturnal versus diurnal activity, feeding amplitude, abundance, size, morphological diversity, etc.). Despite the richer ecological diversity of Macaronesia and the lack of competition in Polynesia, Rhyncogonus and Laparocerus can be considered as ecologically homologous. Both genera have succeeded in colonising their archipelagos, followed by intensive radiation. The concentration of endemics per island is higher in Polynesia congruent with its greater isolation. The highest species density in the Canaries is found in La Gomera, with 0.8 sp/km2, while in Rurutu it is 0.12 sp/km2. The record species density is achieved in Rhyncogonus on Rapa-Iti with 0.27 sp/km2, this figure is further surpassed by the cryptorhynchine genus Miocalles with 1.67 sp/ km2 on that same island. A high number of closely related but well-differentiated species on a small isolated island could be explained as the product of repeated colonising events from a single source lineage (therefore, the monophyly), punctuated in time (punctuated allopatric speciation).10aLaparocerus10aRhyncogonus1 aMachado, Antonio  uhttps://weevil.myspecies.info/rhyncogonus-and-laparocerus-coleoptera-curculionidae-entiminae-parallel-case-success-island-evolut-002288nas a2200169   4500008004100000020001400041245017200055210006900227260001200296300001000308490000700318520160500325653001601930653001601946100002101962856013501983       2007                        eng d  a0210-945X00aRhyncogonus and Laparocerus (Coleoptera, Curculionidae, Entiminae), a parallel case of success in island evolution. Report of a study trip to Moorea, Tahiti and Rurutu0 aRhyncogonus and Laparocerus Coleoptera Curculionidae Entiminae a  cOctubre  a61-760 v353 aThis Is a report ot a study trip to the islands of Moorea, Tahiti and Rurutu to compare the Polynesian weevil genus Rhyncogonus with the Macaronesian genus Laparocerus, in the Atlantic. Both genera have radiated in these archipelagos, and the species are flightless and mostly single-island endemics. The general geological and environmental conditions in both archipelagos are briefly discussed and snapshots of both groups of weevils are provided. Common features are highlighted (wingless, endemicity, etc.) as well as some differences observed (nocturnal versus diurnal activity, feeding amplitude, abundance, size, morphological diversity, etc.). Despite the richer ecological diversity of Macaronesia and the lack of competition in Polynesia, Rhyncogonus and Laparocerus can be considered as ecologically homologous. Both genera have succeeded in colonising their archipelagos, followed by intensive radiation. The concentration of endemics per island is higher in Polynesia congruent with its greater isolation. The highest species density in the Canaries is found in La Gomera, with 0.8 sp/km2, while in Rurutu it is 0.12 sp/km2. The record species density is achieved in Rhyncogonus on Rapa-Iti with 0.27 sp/km2, this figure is further surpassed by the cryptorhynchine genus Miocalles with 1.67 sp/ km2 on that same island. A high number of closely related but well-differentiated species on a small isolated island could be explained as the product of repeated colonising events from a single source lineage (therefore, the monophyly), punctuated in time (punctuated allopatric speciation).10aLaparocerus10aRhyncogonus1 aMachado, Antonio  uhttps://weevil.myspecies.info/rhyncogonus-and-laparocerus-coleoptera-curculionidae-entiminae-parallel-case-success-island-evolutio