In biological classification , a subfamily ( Latin : subfamilia , plural subfamiliae ) is an auxiliary (intermediate) taxonomic rank , next below family but more inclusive than genus . Standard nomenclature rules end botanical subfamily names with "-oideae", and zoological subfamily names with "-inae".
5-539: Helminthoglyptidae Pilsbry, 1939 The Helminthoglyptinae are a subfamily of air-breathing land snails , terrestrial pulmonate gastropod mollusks within the family Xanthonychidae . This is a large and diverse group of new world snails, ranging in distribution from Alaska through North America to the West Indies , Central America , and as far south as Argentina . The shells are typically of medium to large size, with no apertural teeth but usually with
10-483: A reflected apertural lip. In the species in this family, the diverticulum may be present or absent. They possess a single dart apparatus with one stylophore (dart sac) and two mucous glands. These snails use the love dart as part of their mating behavior. In this subfamily, the number of haploid chromosomes lies between 26 and 30 (according to the values in this table). The basic nomenclature and taxonomy of this large and complex subfamily of land snails has been
15-466: The taxonomy of the Gastropoda by Bouchet & Rocroi, 2005 ): Subfamily Sonorellinae Pilsbry, 1939: the diverticulum and the dart apparatus are absent. ITIS listed 16 genera under Helminthoglyptidae. WoRMS added the two genera Greggelix and Micrarionta , as well as dividing the subfamily into two tribes. They are listed below: Genera listed below has an unknown origin: The taxon listed below
20-401: The subject of many modifications, and the list of genera given here is applicable only when the subfamily is broadly interpreted. Many of these snail genera have been placed by various authors in more restrictively defined families, such as: Cepolidae , Epiphragmophoridae , Humboldtianidae , Monadeniidae , and Xanthonychidae . Tribes in the subfamily Helminthoglyptinae include (according to
25-401: Was moved into another taxon: Subfamily (biology) Detarioideae is an example of a botanical subfamily. Detarioideae is a subdivision of the family Fabaceae (legumes), containing 84 genera. Stevardiinae is an example of a zoological subfamily. Stevardiinae is a large subdivision of the family Characidae , a diverse clade of freshwater fish . This biology article is
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