Silent Extinctions

Linepithema flavescens, last seen in 1934

Linepithema flavescens, last seen in 1934

Linepithema flavescens, a small yellow ant from Haiti, is one of the species I re-described as part of my Ph.D. dissertation.  All we know about this ant, apart from the brief notes on the specimen labels, is the external appearance of a few workers.  Queens and males haven't been collected.  No one has studied its ecology or behavior.  The few existing museum specimens- gathered from two different field sites- may be too valuable to attempt DNA extraction.

A 1934 collection is the last time anyone has ever seen L. flavescens. As the natural ecosystems of Haiti have been entirely destroyed in the intervening years, it is possible the species is extinct.  Or not.  It may persist in little pockets, or in the neighboring Dominican Republic.  As far as I know, no one has ever looked.

There are, quite literally, tens of thousands of invertebrate species in the same predicament.  Known only from the initial taxonomic notes, and collected from forests long since felled, the remaining specimens are like fossils.  There are too few scientists, no resources, and too many species like these for anyone to do so much as even send someone out for a weekend to search for them.  So it is that scores of species drop out of existence, unnoticed.

More like this

Atta texana queen and worker Ant queens are those individuals in a nest that lay the eggs.  They're pretty important, of course, as without reproduction the colony dwindles and disappears. Understandably, ant-keepers have an interest in making sure their pet colonies have queens.  Conversely,…
The Argentine Ant (Linepithema humile), a small brown ant about 2-3mm long, is one of the world's most damaging insects. This pernicious ant is spreading to warmer regions around the world from its natal habitat along South America's Paraná River. Linepithema humile can drive native arthropods…
This weekend, Arizona State University is hosting a slate of myrmecologists to brainstorm on ant genomes.  I'd link to the meeting information, but apparently the gathering is so informal that they've not given the event a web page.  In any case, the topic is this:  in the age of (relatively)…
Argentine ants tending scale insects Three years after finishing my Ph.D., I have finally published the last bit of work from my dissertation.  It's a multi-locus molecular phylogeny of the ant genus Linepithema, a group of mostly obscure Neotropical ants that would be overlooked if they didn't…