Summary[edit] Description: English: Life stages of Chaetodactylus krombeini (Astigmata); male not shown; individual LT-SEM photos (excluding phoretic deutonymph photo) by Ron Ochoa and Gary Bauchan, USDA-ARS. Date: 21 April 2017. Source: http://idtools.org/id/mites/beemites/bmites_lifestages.php#nymph. Author: Individual LT-SEM photos (excluding phoretic deutonymph photo) by Ron Ochoa and Gary Bauchan, USDA-ARS.