RESEARCH REGARDING EXTERNAL ANATOMY OF SPECIES AULACORTHUM SOLANI AND MACROSIPHUM EUPHORBIAE PUBLISHED

Liana Mihaela FERICEAN
This paper presents data referring the morphological characteristics and biometricalmeasurements of Aulacorthum solani and Macrosiphum euphorbiae, species captured from potatocultivations for a period of three years, from Didactic Station Timisoara and Varfurile, Arad county. AtAulacorthum solani the adult wingless form has a pear shaped body. It can be whitish green or yellow, inwhich case there is a bright green or rust coloured spot at the base of each siphunculus. The legs are longwith dark knee joints. Siphunculi are long with black tips. The antennae have dark joints and are slightlylonger than the body. At Aulacorthum solani the winged form looks quite different, with much darkerantennae, legs and siphunculi. The smallest length of the body established for aphids captured in WestZone of Romania was 1,90 mm, while the biggest was 3,0 mm. The average body length was 2,48 ± 0,35mm. The average value calculated for head width was 0.42 ± 0.06 mm. Mean thorax width was 0.73 ±0.08 mm. The mean length of the abdomen was 1.40 ± 0.20 mm, while the average value calculated forabdomen width was 0,97± 0.16 mm. At Macrosiphum euphorbiae the wingless female potato aphid isgreen sometimes with a darker dorsal stripe. It has a pear shaped body. The antennae are dark at thejoints between the segments and are longer than the body. The legs are longer than in other aphids, palegreen but darker at the apices. The siphunculi are pale coloured, cylindrical with dark tips. The wingedform has a uniform darker coloured body and appendages and has a green abdomen. The smallest lengthof the body established for aphids captured in West Zone of Romania was 2,80 mm, while the biggest was3,40 mm. The average body length was 3,13 ± 0,17 mm. The average value calculated for the length ofthe head and thorax was 1,19 ± 0.08 mm. The average value calculated for head width was 0.46 ± 0.05mm. Mean thorax width was 0.86 ± 0.13 mm. The mean length of the abdomen was 1.94 ± 0.17 mm, whilethe average value calculated for abdomen width was 1,28 ± 0.12 mm.
Aulacorthum solani, Macrosiphum euphorbiae biometrical measurements
Presentation: oral

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