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Yellow archangel aphidOn this page: Identification & Distribution Other aphids on the same host
Identification & Distribution:
Cryptomyzus maudamanti apterae are pale yellow to light green, occasionally with a faint green longitudinal stripe. Their antennae are about 1.5 times the body length, and the terminal process is about 9.6 times the length of the base. The longest hairs on antennal segment III are longer than the basal diameter of that segment, similar in length to those on the antennal segment I. Abdominal tergites I-IV each bear 8-14 capitate hairs. Their rostrum reaches the hind coxae. The siphunculi of Cryptomyzus maudamanti are slightly but distinctly swollen on the distal part (more so than in Cryptomyzus galeopsidis) and are about 3-4 times as long as the cauda. The body length of Cryptomyzus maudamanti is 1.1-2.3 mm.
The images below show an apterous adult Cryptomyzus maudamanti, dorsally and ventrally, in alcohol.
The alate (see clarified mount below) has 3-4 broad, rather short , brown, dorsal cross bars, much like Cryptomyzus galeopsidis.
Cryptomyzus maudamanti host alternates from Ribes rubrum (redcurrant) to Lamium galeobdolon (yellow archangel). Oviparae and alate males occur in autumn. Cryptomyzus maudamanti is found in England, Netherlands, Germany, Lithuania, Czech Republic and Italy.
Other aphids on same host:
Cryptomyzus maudamanti has been recorded from only one Ribes species: Ribes rubrum.
Under laboratory conditions some rather sickly Cryptomyzus maudamanti colonies have be established on several Lamium species (and on Galeopsis tetrahit), but in the field Cryptomyzus maudamanti has only been recorded from Lamium galeobdolon.
Blackman & Eastop list 3 species of aphid as feeding on yellow archangel (Lamium galeobdolon) worldwide, and provide formal identification keys (Show World list). Of those aphid species, Baker (2015) lists all 3 as occurring in Britain (Show British list).