Euceraphis borealis Blackman

Stekolshchikov, Andrey V. & Khruleva, Olga A., 2015, Contributions to the aphid fauna (Hemiptera, Aphidoidea) of Chukotka Autonomous Okrug with descriptions of five new species, Zootaxa 4044 (1), pp. 1-44: 4

publication ID

http://dx.doi.org/10.11646/zootaxa.4044.1.1

publication LSID

lsid:zoobank.org:pub:CB464055-EC76-4702-93B2-5BF1961F0A16

persistent identifier

http://treatment.plazi.org/id/03B487AB-FFE2-FFC0-9680-8DE2FE356427

treatment provided by

Plazi

scientific name

Euceraphis borealis Blackman
status

 

Euceraphis borealis Blackman   in Blackman and De Boise, 2002

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.

Distribution outside Chukotka AO. Finland, Canada (Quebec, Manitoba, North-west Territories), USA (Alaska).

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.