Some new synonyms in Aphididae (Hemiptera: Sternorrhyncha) Author Victor Author Eastop, F. Author Blackman, Roger L. text Zootaxa 2005 1089 1 36 journal article 37165 10.5281/zenodo.273344 d10b9f81-9b43-4efb-a0ea-b57b6229ef1f 1175­5326 273344 Sitobion dorsatum Richards 1967 to Aulacorthum This species was described in Aulacorthum but transferred to Sitobion by Eastop and Hille Ris Lambers (1976) . The dorsal cuticle is sclerotic as in Sitobion and the siphunculi have several rows of subapical reticulation, but these features are also found in some Aulacorthum . However unlike any Sitobion the antennal tubercles are very well developed and steep­sided, and the ventral side of the head is spiculose. The karyotype (three samples collected by Cho­kai Chan), is 2n=12, commonly found in Aulacorthum , whereas most Sitobion have 2n=18. The alata, uncharacteristically for both genera, has a dark dorsal abdominal patch, which might indicate a closer affinity to Neomyzus , except that the hind tibiae are not spinulose. We conclude that this species should be returned to Aulacorthum , in spite of some features atypical of that genus.