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Cryptomyzus maudamanti

Yellow archangel aphid

On 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 of the sixth antennal segment is about 9.6 times the length of the base. The longest hairs on the third antennal segment are longer than the basal diameter of that segment, similar in length to those on the first antennal segment.

Abdominal tergites 1-4 each bear 8-14 capitate hairs. The siphunculi of Cryptomyzus maudamanti are distinctly swollen on the distal part (more so than in Cryptomyzus galeopsidis) and about 3-4 times as long as the cauda. Their rostrum reaches the hind coxae. The body length of Cryptomyzus maudamanti is 1.1-2.3 mm.

The alate has 3-4 broad, rather short , brown, dorsal cross bars, much like Cryptomyzus galeopsidis.

The clarified slide mounts below are of adult viviparous female Cryptomyzus maudamanti : wingless, and winged.

Micrographs of clarified mounts  by permission of Roger Blackman, copyright AWP  all rights reserved.

Cryptomyzus maudamanti host alternates from Ribes rubrum (redcurrant) to Lamium galeobdolon (yellow archangel) and other Lamium species. 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:

Primary host

Blackman & Eastop list 18 species of aphid  as feeding on redcurrant (Ribes rubrum) worldwide, and provide formal identification keys.

Of those aphid species, Baker (2015)  lists 15 as occurring in Britain: Aphis fabae,  Aphis grossulariae,  Aphis schneideri,  Aphis triglochinis, Cryptomyzus galeopsidis,  Cryptomyzus galeopsidis ssp. citrinus, Cryptomyzus maudamanti, Cryptomyzus ribis,  Eriosoma grossulariae, Eriosoma ulmi,  Hyperomyzus lactucae,  Hyperomyzus pallidus,  Hyperomyzus rhinanthi,  Nasonovia ribisnigri  and Rhopalosiphoninus ribesinus. 

Secondary host

Blackman & Eastop list 3 species of aphid  as feeding on yellow archangel (Lamium galeobdolon) worldwide, and provide formal identification keys.

Of those aphid species, Baker (2015)  lists all 3 as occurring in Britain: Aphis lamiorum, Cryptomyzus galeopsidis  and Cryptomyzus maudamanti.


Our particular thanks to Roger Blackman for images of his clarified slide mounts.

We have made provisional identifications from high resolution photos of living specimens, along with host plant identity. In the great majority of cases, identifications have been confirmed by microscopic examination of preserved specimens. We have used the keys and species accounts of Blackman & Eastop (1994)  and Blackman & Eastop (2006)  supplemented with Blackman (1974) , Stroyan (1977) , Stroyan (1984) , Blackman & Eastop (1984) , Heie (1980-1995) , Dixon & Thieme (2007)  and Blackman (2010) . We fully acknowledge these authors as the source for the (summarized) taxonomic information we have presented. Any errors in identification or information are ours alone, and we would be very grateful for any corrections. For assistance on the terms used for aphid morphology we suggest the figure  provided by Blackman & Eastop (2006).

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