Whitefly pupa - Aleurotrachelus

What is this -- Pupa, puparium, or scale-like larval instar?

It says pupa for this image, but I've seen similar images called puparia, and it's my understanding some whiteflies also have scale-like larval instars.

… John Schneider, 21 July, 2014 - 7:49am

Definitions

A puparium is a protective covering surrounding a fly (dipteran) pupa, formed by the hardening of the last larval skin.
"Pupa" is usually reserved for the stage between larva and adult for insects that have complete metamorphosis. An exception is made for whiteflies because the last nymphal instar resembles a pupa in being inactive.
Immature whiteflies are called nymphs rather than larvae, so they do not have "scale-like larval instars."

… Charley Eiseman, 21 July, 2014 - 7:38pm

Thanks

… John Schneider, 21 July, 2014 - 9:49pm

Moved

Moved from Citrus Blackfly.

… Charley Eiseman, 19 November, 2010 - 3:02pm

This not the citrus blackfly

This not the citrus blackfly A. woglumi. Given that it seems to be inside a greenhouse, I suspect that it is the more tropical genus Aleurotrachalus sp.

… Ian Stocks, 19 November, 2010 - 2:48pm

Moved

Moved from Whiteflies.

… Charley Eiseman, 9 November, 2008 - 10:36am

Citrus blackfly?

This looks much like the pupae of citrus blackflies (Aleurocanthus woglumi) pictured on page 289 of Cranshaw's Garden Insects. Was this on citrus? Since this was two years ago, maybe a fairer question would be, is there citrus in your greenhouse?

… Charley Eiseman, 7 November, 2008 - 2:26pm

Yes, likely on citrus

Thanks for the info ... the greebouse has a lot of citrus, and the bug depicted was quite likely on citrus.

… David Cappaert, 8 November, 2008 - 8:20am

Image

This one may be the Mulberry whitefly (Tetraleurodes mori) suggested on the other image.
http://www.forestryimages.org/browse/subimages.cfm?SUB=343

Other image unlinked because they appear to be different species.

… John R. Maxwell, 25 March, 2008 - 1:02pm