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I was lucky to find three different varieties of globular springtail on the same leaf. All were in the range 0.5mm - 0.6mm. I think that they are all in the genus Sminthurinus. The genus contains recognised species, some colour variants of species and others that seem to fall somewhere in between! A bit of a minefield for the uninitiated (like me).
The experts will help me, but these could be:
1. A colour variant of Sminthurinus aureus or perhaps Sminthurinus igniceps (dark body, pale head)?;
2. Sminthurinus elegans f. ornata - lateral longitudinal pigment bands, but with no mid-dorsal stripe;
3. A dark form of Sminthurinus aureus (the wide, green dorsal band is the gut contents), but not as darkly marked as the Sminthurinus reticulatus form.
All with Canon MP-E 65mm (at x5) + 1.4x Extender + MT24-EX Flash. Combined and cropped.
Dicyrtomina cf. ornata
Several of them had grit stuck to their backs like this. They seemed to be coming out from a crack where the concrete patio meets my doorsill, so that's probably where they picked up those little bits. I like how this one's antennae are making a line.
The smallest springtail I have seen found it looking down a 1280x microscope in a drop of water from a leaf.
Superdomain: Neomura
Domain: Eukaryota
(unranked): Opisthokonta
(unranked) Holozoa
(unranked) Filozoa
Kingdom: Animalia
Subkingdom: Eumetazoa
Superphylum: Ecdysozoa
Phylum: Arthropoda
Subphylum: Hexapoda
Class: Entognatha
Subclass: Collembola
Order: Entomobryomorpha
Springtail wandering around on a glass slide - same springtail as www.flickr.com/photos/lordv/3055007547/
Globular springtail (Dicyrtomina sp.?) and leafhopper (Eupteryx florida?) on the surface of a bird-bath
The springtail then left me a present. See www.flickr.com/photos/lordv/2218399643/ for last shot in sequence
I don't recollect seeing any of these on my "patch" (the local churchyard) last year, but it the moment, they seem to be the predominant globular springtail species Perhaps with my inexperience, I was missing them previously; they are very small (around 0.5mm).
The UK literature suggests that Sminthurinus igniceps is typically restricted to hothouse environments. This is in a chilly churchyard. Frans Janssens' criteria for this species include the head being paler than the body and the 5th abdominal segment (final segment before the "small abdomen") being fused with the "large abdomen" dorsally but not ventrally. These seem to fit those criteria nicely (if I'm recognising the 5th abdominal segment correctly!).
I've been increasing magnification of the MP-E 65mm macro lens recently, by adding a 1.4x Extender. Today I tried adding 68mm of extension tubes instead, on the assumption that this would affect image-quality less. Not sure what magnification I'm getting with this setup, but would assume around x8. Seems to work quite well. I does produce some serious vignetting, but this can be cropped out.
Canon 5D3 (at x5) + Kenko Extension Tubes (68mm) + MT24-EX Flash. Cropped.
Collembola, Symphypleona, Dicyrtomidae, identified by Frans Janssens as Dicyrtomina saundersi.
See here for next shot of this one.
Found under lid of a water-butt, St. Albans 21.11.2007.