Biorhiza pallida (Olivier, 1791)

Shachar, Einat, Melika, George, Inbar, Moshe & Dorchin, Netta, 2018, The oak gall wasps of Israel (Hymenoptera, Cynipidae, Cynipini) - diversity, distribution and life history, Zootaxa 4521 (4), pp. 451-498 : 471

publication ID

https://doi.org/10.11646/zootaxa.4521.4.1

publication LSID

lsid:zoobank.org:pub:A4FD6137-25B0-43D5-845B-B4FDF4E9F5D7

DOI

https://doi.org/10.5281/zenodo.5949925

persistent identifier

https://treatment.plazi.org/id/AC1F87FE-FFF0-FF92-FF61-FECFFAF0B404

treatment provided by

Plazi

scientific name

Biorhiza pallida (Olivier, 1791)
status

 

Biorhiza pallida (Olivier, 1791)

Host plants. Israel: Q. boissieri . Elsewhere: several oak species from section Quercus .

Life history. The sexual generation induces multi-chambered, irregularly spherical, soft and spongy galls, 15– 30 mm in diameter, light brown when mature ( Fig. 22 View FIGURES 17–22 ). The asexual generation develops in multi-chambered galls in the roots.

Phenology. Galls of the sexual generation appear shortly after bud burst and mature through May and June. In Israel adults emerge in May, whereas in Southern Northern Europe they emerge at the end of May or in late June, respectively. Galls of the asexual generation take two years to mature, and complete their developement in the winter of their second year. The wingless females of the asexual generation emerge in the winter or very early spring, climb up the tree, and lay their eggs on shoots ( Melika 2006b).

Distribution. Israel: Rare; known only from Mt. Kahal. Only the sexual generation was found in the present study, as root galls were not surveyed. Elsewhere: A widespread and often common species known from Europe, Northwestern Africa, east to Transcaucasia, Turkey and Iran. Data on the distribution in the Far East of Russia appears to be erroneous due to misidentification with another species - B. nawai (Ashmead) ( Melika 2012) .

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Cynipidae

Genus

Biorhiza