Two new species of Aphis ( Toxoptera ) Koch (Hemiptera, Aphididae) from China.

Two new aphid species, Aphis (Toxoptera) fafuensis Cheng & Huang, sp. nov. , feeding on Adinandramillettii (Pentaphylacaceae) from Fujian, China, and Aphis (Toxoptera) sennae Cheng & Huang, sp. nov. , feeding on Sennabicapsularis (Fabaceae) from Yunnan, China, were described. Morphological characters and molecular data supported the taxonomic position of the new species within the subgenus Aphis (Toxoptera). A key for identifying species of apterous viviparous females in this subgenus is provided.