Gootiella tremulae Tullgren, 1925

Albrecht, Anders Christian, 2015, Identification guide to Nordic aphids associated with mosses, horsetails and ferns (Bryophyta, Equisetophyta, Polypodiophyta) (Insecta, Hemiptera, Aphidoidea), European Journal of Taxonomy 145, pp. 1-55 : 24

Gootiella tremulae Tullgren, 1925

Fig. 19C

Diagnosis

Diagnosis based on Danielsson (1990b). Apterae globular to ovoid, 0.9–1.5 mm, grey, covered in white wax. In many respects resembling Pachypappella lactea , but readily distinguished by the remarkably thickened hind femora. Antennae 5-segmented. Dioecious, alternating between Populus tremula (Salicaceae) and juniper Juniperus communis (Cupressaceae) , where the aphids live in wax nests similar to those of P. lactea , and commonly overwinter there ( Danielsson 1990b).

Distribution

D F N S.

Figures

Fig. 19. Gootiella, Pachypappa and Pachypappella. Apt. alienicolae (born on secondary host). A–B. Spinal wax gland on abd. terg. 6 of Pachypappa populi (Linnaeus, 1758) (A) and P. vesicalis Koch, 1856 (B). C. Hind leg of Gootiella tremulae Tullgren, 1925. D–G. Hind tibia and tarsus of Pachypapella lactea (Tullgren, 1909) (D), Pachypappa tremulae Tullgren, 1925 (E), P. populi (Linnaeus, 1758) (F) and P. vesicalis Koch, 1856 (G). A–B and D–G after Carter & Danielsson 1991, C after Danielsson 1990b. All modified.