Mesocallis (Paratinocallis) yunnanensis (Zhang, 1985)
Paratinocallis yunnanensis Zhang 1985: 220; Qiao et al. 2005: 211.
Mesocallis (Paratinocallis) yunnanensis (Zhang): Quednau 2003: 21.
Specimens examined.
Three alate viviparous females, China: Yunnan (Lijiang City: Yulongxueshan Mountain), 30 May 1984, no. 7192, on Corylus heterophylla, coll. T.S. Zhong (NZMC).
Distribution.
China (Yunnan).
Host plants.
Corylus heterophylla .
Biology.
Beige in life; infesting the underside of leaves of host plants.
Key to the species of Mesocallis in China
| 1 | Abdominal tergites I-IV each with one pair of marginal setae | 2 |
| - | Abdominal tergites I-IV each with two or three pairs of marginal setae | 6 |
| 2 | Dorsal body setae dark brown; shafts of setae mainly smooth, only sparsely spinulose for part of length; on Platycarya strobilacea ( Juglandaceae) | M. platycaryae sp. nov. |
| - | Dorsal body setae unpigmented; with spinulose shafts; on plants of Betulaceae | 3 |
| 3 | In the alatae anterior part of head black; antennal segment III black; ultimate rostral segment 0.7-1.4 × as long as hind second tarsal segment | 4 |
| - | In the alatae anterior part of head pale; antennal segment III black in whole, or dorsal half, or only apex; ultimate rostral segment 0.6-0.9 × as long as hind second tarsal segment | 5 |
| 4 | In alatae: processus terminalis 0.6-0.8 × as long as the base of the segment; ultimate rostral segment 0.7-0.9 × as long as hind second tarsal segment; first tarsal segments with five ventral setae; in apterae and nymph: marginal setae of abdominal tergites V and VII minute or very short | M. taoi 1 |
| - | In alatae: processus terminalis 0.9-1.2 × as long as the base of the segment; ultimate rostral segment 1.2-1.4 × as long as hind second tarsal segment; first tarsal segments with six ventral setae; in alatoid nymph: marginal setae of abdominal tergites V and VII slightly shortened than those on other tergites | M. pteleae |
| 5 | Some abdominal tergites with duplicated spinal setae and/or with an intercalary seta developed amidst spinal setae; processus terminalis 0.6-0.7 × as long as the base of the segment; in alatae antennal segment III black except for its very base, antennal segment IV sometimes with secondary rhinaria | M. alnicola |
| - | Abdominal tergites each with one pair of spinal setae; processus terminalis 1.0-1.2 × as long as the base of the segment; in alatae antennal segment III pale with apex, antennal segment IV without secondary rhinaria | M. sawashibae |
| 6 | In alatae: processus terminalis 0.9-1.0 × as long as the base of the segment; antennal segment IV with secondary rhinaria; ultimate rostral segment 0.9-1.0 × as long as hind second tarsal segment | M. corylicola |
| - | In alatae: processus terminalis 0.6-0.7 × as long as the base of the segment; antennal segment IV without secondary rhinaria; ultimate rostral segment 1.5-1.7 × hind second tarsal segment | M. yunnanensis |