Euceraphis borealis Blackman
- Dataset
- Contributions to the aphid fauna (Hemiptera, Aphidoidea) of Chukotka Autonomous Okrug with descriptions of five new species
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Insecta
- order
- Aphidomorpha
- family
- Aphididae
- genus
- Euceraphis
- species
- Euceraphis borealis
discussion
Comments. Specimens from Chukotka differ slightly in morphology from those described by Blackman and De Boise (2002). Our specimens have a slightly shorter base of the 6 th antennal segment — 306 – 372 (320 – 390 in Blackman and De Boise), a greater range of the ratio of the 5 th antennal segment to the base of the 6 th antennal segment — 2.09 – 2.79 (2.16 – 2.73 in Blackman and De Boise), a slightly lower ratio of the length of the 6 th antennal segment to the length of the ultimate rostral segment — 2.35 – 2.72 (2.38 – 3.05 in Blackman and De Boise), and slightly greater ratio of length of the ultimate rostral segment and the length of the 2 nd segment of the hind tarsus — 0.60 – 0.65 (0.52 – 0.62 in Blackman and De Boise). However, these are minor differences and are probably the result of simple geographic variation.
distribution
Distribution outside Chukotka AO. Finland, Canada (Quebec, Manitoba, North-west Territories), USA (Alaska).
materials_examined
Material. 3 al., No. 10233, SSWBer, Betula nana exilis (Sukaczev) Hulten, 6. vii. 2012, on upper and lower surface of leaves; 2 al., No. 10265, SSWBer, Betula nana exilis (Sukaczev) Hulten, 26. vii. 2012, on lower surface of leaves; 3 al., No. 10271, SSWBer, Betula nana exilis (Sukaczev) Hulten, 2. viii. 2012, on lower surface of leaves.
Name
- Homonyms
- Euceraphis borealis Blackman