FOSSIL GALLS (ZOOCECIDS) FROM THE UPPER MIOCENE OF LA CERDANA (LERIDA, SPAIN)

Citation
C. Dieguez et al., FOSSIL GALLS (ZOOCECIDS) FROM THE UPPER MIOCENE OF LA CERDANA (LERIDA, SPAIN), Review of palaeobotany and palynology, 94(3-4), 1996, pp. 329-343
Citations number
63
Categorie Soggetti
Paleontology,"Plant Sciences
ISSN journal
00346667
Volume
94
Issue
3-4
Year of publication
1996
Pages
329 - 343
Database
ISI
SICI code
0034-6667(1996)94:3-4<329:FG(FTU>2.0.ZU;2-0
Abstract
Upper Miocene strata of the La Cerdana basin, Spain, have provided div erse flora of leaf remains assignable to the Magnoliidae, Hamamelidida e, Dilleniidae, Rosidae and the Asteridae. Thirteen different types of fossil galls were identified on representatives of all these subclass es except for the Asteridae. The galls are two-dimensional impressions on the leaves and can be attributed to the following gall-inducing ar thropods based on their similarity with modern galls: Acari, Eriophyoi dea-Aceria nervisequa on Fagus gussonii, Eriophyies vilarrubiae on Que rcus drymeja, Artacris macrorhynchus on Acer pyrenaicum, an undetermin ed species on Persea, Zelkova zelkovaefolia and Acer pyrenaicum; Dipte ra, Cecidomyiidae-Mikiola pontensis on Fagus pristina, Contarinia? on Quercus drymeja; Hymenoptera, Cynipidae-Neuroterus sp. on Quercus hisp anica. The fossil gall collection studied here from La Cerdana, Spain, confirms that an arthropod gall-inducing fauna was already well estab lished in the Miocene. Gall-inducer interaction is reported for the fi rst time for all the fossil plants mentioned. The host plant record fo r two cecidogenous taxa is expanded, and two taxa of parasitized plant s as well as two new plant/animal associations are mentioned for the f irst time.