Humboldtiana is a genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of American air-breathing land snail

Snail

Snail is a common name applied to most of the members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in its most general sense, it includes sea snails, land snails and freshwater snails. The word snail without any qualifier is however more often...

s, terrestrial

Terrestrial animal

Terrestrial animals are animals that live predominantly or entirely on land , as compared with aquatic animals, which live predominantly or entirely in the water , or amphibians, which rely on a combination of aquatic and terrestrial habitats...

 pulmonate gastropod mollusks in the family Humboldtianidae

Humboldtianidae

Humboldtianidae is an American family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea .-Anatomy:...

.

Anatomy

Snails in this genus create and use love darts as part of their mating behavior.

The scanning electron microscope

Scanning electron microscope

A scanning electron microscope is a type of electron microscope that images a sample by scanning it with a high-energy beam of electrons in a raster scan pattern...

 images on the left show (above) the lateral view of the love dart of Humboldtiana nuevoleonis

Humboldtiana nuevoleonis

Humboldtiana nuevoleonis is a species of American air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Humboldtianidae.-Anatomy:Snails in this species create and use love darts as part of their mating behavior....

, scale bar 500 μm (0.5 mm); and (below) a cross section of the dart, scale bar 50 μm.

Species

Species within the genus Humboldtiana include:

• Humboldtiana agavophila Pratt, 1971
• Humboldtiana hoegiana
• Humboldtiana nuevoleonis
  Humboldtiana nuevoleonis
  Humboldtiana nuevoleonis is a species of American air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Humboldtianidae.-Anatomy:Snails in this species create and use love darts as part of their mating behavior....
  
  Pilsbry, 1927
• Humboldtiana ultima

Further reading

• Mejía O. & Zúñiga G. (2007). "Phylogeny of the three brown banded land snail genus Humboldtiana (Pulmonata: Humboldtianidae)". Molecular Phylogenetics and Evolution
  Molecular Phylogenetics and Evolution
  Molecular Phylogenetics and Evolution is a peer-reviewed scientific journal of evolutionary biology and phylogenetics. The journal is edited by D.E. Wildman.-Indexing:The journal is indexed in:*EMBiology*Journal Citation Reports*Scopus*Web of Science...
  
  45: 587-595. , doi:10.1016/j.ympev.2007.07.013.
• Pilsbry H. A. (1948). "Inland Mollusks of Northern Mexico. I. The genera Humboldtiana, Sonorella
  Sonorella
  Sonorella is a genus of land snails, a gastropod in the Helminthoglyptidae family.- Species :Species in the genus Sonorella include:* Sonorella allynsmithi* Sonorella christenseni* Sonorella eremita - San Xavier talussnail...
  
  , Oreohelix
  Oreohelix
  Oreohelix is a genus of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Oreohelicidae.Oreohelix is the type genus for the family Oreohelicidae.- Species :Species within the genus Oreohelix include:...
  
  and Ashmunella
  Ashmunella
  Ashmunella is a genus of small, air-breathing, land snails, terrestrial pulmonate gastropod molluscs in the family Polygyridae.-Species:Species and subspecies within the genus Ashmunella include:*Ashmunella levettei...
  
  ". Proceedings of the Academy of Natural Sciences of Philadelphia 100: 185-203.
• A list of papers about the Humboldtiana