17 Apr '12, 1pm

The Annotated Budak: False scales by @budak

The Annotated Budak: False scales by @budak

There is a tendency for certain taxa to ditch a freewheeling existence for fixed habits. Barnacles, sea squirts, worm snails and tube worms have secondarily abandoned legwork to pursue a life of attachment, though their ontogeny betrays their affinities with motile kin. On land, there are fewer opportunities to stay put, for want of convenient nutrient streams, but one group of true bugs, the coccoids or scale insects, exhibit varying degrees of sessility in adulthood, having made the most of the specialised feeding apparatus of their order, which permit the stationary imbibing of plant sap from subcuticular vessels. Male coccoids , which bear just one pair of wings and lack mouthparts, are recognisably insectan, but the females look nothing like their mates, or other members of their subphylum, for that matter. Mealybugs of both sexes, which cover themselves with sticky f...

Full article: http://budak.blogs.com/the_annotated_budak/2012/04/scale....

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The Annotated Budak: Middle reef by @budak

The Annotated Budak: Middle reef by @budak

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