Two new species of sympatric Fergusonina Malloch flies (Diptera: Fergusoninidae) from bud galls on high-elevation snow gums (Eucalyptus pauciflora Sieb. ex Spreng. complex) in the Australian Alps
Article first published online: 28 NOV 2011
© 2011 The Authors. Journal compilation © 2011 Australian Entomological Society
Australian Journal of Entomology
Volume 50, Issue 4, pages 356–364, November 2011
How to Cite
Nelson, L. A., Scheffer, S. J. and Yeates, D. K. (2011), Two new species of sympatric Fergusonina Malloch flies (Diptera: Fergusoninidae) from bud galls on high-elevation snow gums (Eucalyptus pauciflora Sieb. ex Spreng. complex) in the Australian Alps. Australian Journal of Entomology, 50: 356–364. doi: 10.1111/j.1440-6055.2011.00826.x
- Issue published online: 28 NOV 2011
- Article first published online: 28 NOV 2011
- Accepted for publication 11 March 2011.
Two Fergusonina (Diptera: Fergusoninidae) flies are described from terminal leaf bud galls on high-elevation snow gums (Eucalyptus pauciflora complex) in the Australian Alps. The new species, Fergusonina daviesae Nelson and Yeates sp. nov. and Fergusonina taylori Nelson and Yeates sp. nov., occur in sympatry at the six collection locations. After extensive field studies, these are the only two Fergusonina species that have been found on high-elevation snow gums. The two can be distinguished from each other by differences in adult size and markings on the mesonotum. The mature larvae, which are superficially similar to each other, but differ in shape and details of the dorsal shield ornamentation, are described. Additionally, a cytochrome oxidase I (COI) sequence divergence of 12.55% between the two putative species supports the conclusions drawn from the morphological study. The two species can be distinguished from other described species of Fergusonina by host specificity, adult colour, setation and larval dorsal shield morphology.