• Source: Bean weevil

The bean weevils or seed beetles are a subfamily (Bruchinae) of beetles, now placed in the family Chrysomelidae, though they have historically been treated as a separate family. They are granivores, and typically infest various kinds of seeds or beans, living most of their lives inside a single seed. The subfamily includes about 1,650 species and are found worldwide.
Bean weevils are generally compact and oval in shape, with small heads somewhat bent under. Sizes range from 1 to 22 mm for some tropical species. Colors are usually black or brown, often with mottled patterns. Although their mandibles may be elongated, they do not have the long snouts characteristic of true weevils.
Adults deposit eggs on seeds, then the larvae chew their way into the seed. When ready to pupate, the larvae typically cut an exit hole, then return to their feeding chamber. Adult weevils have a habit of feigning death and dropping from a plant when disturbed.
Host plants tend to be legumes, but species will also be found in Convolvulaceae, Arecaceae, and Malvaceae, and several species are considered pests.
One characteristic of the beetles which can be seen in the photo is that the elytra are short, not quite reaching the tip of the abdomen.
Several species are native to Great Britain, but there are also records of several introduced species from stored products in warehouses and dwellings, although these species cannot proliferate outside of heated buildings in that climate.




Genera


This list of genera uses the new classification, treating the bean weevils as a subfamily with six extant tribes, eight or nine subtribes, and one extinct tribe. The former names and ranks for the tribes and subtribes under the old classification, treating the been weevils as a family, are given in parentheses (except for Myanmaropini, which was established only for the new classification).

Tribe Amblycerini Bridwell, 1932 (= Subfamily Amblycerinae)
Subtribe Amblycerina Bridwell, 1932 (= Tribe Amblycerini)
Amblycerus Thunberg, 1815
Subtribe Spermophagina Borowiec, 1987 (= Tribe Spermophagini)
Spermophagus Schoenherr, 1833
Zabrotes Horn, 1885
Tribe Bruchini Latreille, 1802 (= Subfamily Bruchinae)
Subtribe Acanthoscelidina Bridwell, 1946 (= Tribe Acanthoscelidini)
Abutiloneus Bridwell, 1946
Acanthoscelides Schilsky, 1905
Algarobius Bridwell, 1946
Althaeus Bridwell, 1946
Bonaerius Bridwell, 1952
Caryedes Hummel, 1827
Cosmobruchus Bridwell, 1931
Ctenocolum Kingsolver & Whitehead, 1974
Dahlibruchus Bridwell, 1931
Gibbobruchus Pic, 1913
Lithraeus Bridwell, 1952
Margaritabruchus Romero & Johnson, 2001
Meibomeus Bridwell, 1946
Megasennius Whitehead & Kingsolver, 1975
Merobruchus Bridwell, 1946
Mimosestes Bridwell, 1946
Neltumius Bridwell, 1946
Neobruchidius Johnson & Romero, 2006
Palpibruchus Borowiec, 1987
Pectinibruchus Kingsolver, 1967
Penthobruchus Kingsolver, 1973
Pseudopachymerina Zacher, 1952
Pygiopachymerus Pic, 1911
Rhipibruchus Bridwell, 1932
Scutobruchus Kingsolver, 1968
Sennius Bridwell, 1946
Spatulobruchus Borowiec, 1987
Stator Bridwell, 1946
Stylantheus Bridwell, 1946
Subtribe Bruchidiina Bridwell, 1946 (= Tribe Bruchidiini)
Acanthobruchidius Borowiec, 1980
Borowiecus Anton, 1994
Bruchidius Schilsky, 1905
Callosobruchus Pic, 1902
Conicobruchus Decelle, 1951
Decellebruchus Borowiec, 1987
Horridobruchus Borowiec, 1984
Kingsolverius Borowiec, 1987
Megabruchidius Borowiec, 1984
Palaeoacanthoscelides Borowiec, 1985
Parasulcobruchus Anton, 1999
Pygobruchidius Pic, 1951
Salviabruchus Decelle, 1982
Specularius Bridwell, 1938
Sulcobruchus Chûjô, 1937
Tuberculobruchus Decelle, 1951
Subtribe Bruchina Latreille, 1802 (= Tribe Bruchini)
Bruchus Linnaeus, 1767
Subtribe Megacerina Bridwell, 1946 (= Tribe Megacerini)
Megacerus Fåhraeus, 1839
Tribe Eubaptini Bridwell, 1932 (= Subfamily Eubaptinae)
Eubaptus Lacordaire, 1845
Tribe Kytorhinini Bridwell, 1832 (= Subfamily Kytorhininae)
Kytorhinus Fischer von Waldheim, 1809
Tribe Pachymerini Bridwell, 1929 (= Subfamily Pachymerinae)
Subtribe Caryedontina Bridwell, 1929 (= Tribe Caryedontini)
Aforedon Decelle, 1965
Caryedon Schoenherr, 1823
Caryotrypes Decelle, 1968
Exoctenophorus Decelle, 1968
Mimocaryedon Decelle, 1968
Subtribe Caryopemina Bridwell, 1929 (= Tribe Caryomepini)
Caryopemon Jekel, 1855
Diegobruchus Pic, 1913
Protocaryopemon Borowiec, 1987
Subtribe Pachymerina Bridwell, 1929 (= Tribe Pachymerini)
Butiobruchus Prevett, 1966
Caryobruchus Bridwell, 1929
Caryoborus Schoenherr, 1833
Pachymerus Thunberg, 1805
†Mesopachymerus Poinar, 2005 Canadian amber, Campanian
Tribe Rhaebini Chapuis, 1874 (= Subfamily Rhaebinae)
Rhaebus Fischer von Waldheim, 1824
Tribe †Myanmaropini Legalov et al., 2020
†Myanmarops Legalov et al., 2020 Burmese amber, Myanmar, Cenomanian




Notes






References



John M. Kingsolver, "Bruchidae", in Ross H. Arnett, Jr. and Michael C. Thomas, American Beetles (CRC Press, 2002), vol. 2 (note that this reference itself indicates the group is a subfamily, and the change was made only after the chapter was written)




External links



BRUCHBASE

Kata Kunci Pencarian:

• Daftar hewan yang menampilkan perilaku homoseksual
• Bean weevil
• Weevil
• Acanthoscelides obtectus
• Adzuki bean
• Mung bean
• Callosobruchus chinensis
• Zabrotes subfasciatus
• Legume
• Araecerus fasciculatus
• Penis