New York Natural Heritage Program
Southern Pygmy Clubtail
Lanthus vernalis Carle, 1980
Insects
S. Collins
Family: Clubtails (Gomphidae)

State Protection: Not Listed
The species is not listed or protected by New York State.

Federal Protection: Not Listed

State Rarity Rank: S1
A State Rarity Rank of S1 means: Typically 5 or fewer occurrences, very few remaining individuals, acres, or miles of stream, or some factor of its biology makes it especially vulnerable in New York State.

Global Rarity Rank: G4
A Global Rarity Rank of G4 means: Apparently secure globally, though it may be quite rare in parts of its range, especially at the periphery.


Did you know?
There are only three Lanthus species worldwide and they are some of the oldest known living insects, about175 million years old. Two of these are Appalachian residents and both of them are found in New York. The third, L. fujiacus lives in Japan. Very wide disjunctions across oceans such as this are believed by biogeographers to signify an ancient connection, speaking to the great age of these groundwater-fed forest obligate insects (Corser et al., 2014).

State Ranking Justification [-]
Lanthus is a very old (175 million years) genus with just two members in North America. It is a secretive inhabitant of forests adjacent to pristine, spring-fed brooks, seepages and small rivers. Larvae are intolerant of excessive sedimentation and therefore make excellent indicators of high quality waters. Its distribution appears to have recently shifted northeastward and shrank considerably so that within New York there are currently only about five known extant locations (White et al., 2010).

Short-term Trends [-]

Long-term Trends [-]