The oak gall wasps of Israel (Hymenoptera, Cynipidae, Cynipini) - diversity, distribution and life history
Author
Shachar, Einat
Author
Melika, George
Author
Inbar, Moshe
Author
Dorchin, Netta
text
Zootaxa
2018
2018-11-16
4521
4
451
498
journal article
27950
10.11646/zootaxa.4521.4.1
832ac35c-8871-4041-9321-ea7f2ae5eb41
1175-5326
2610021
A4FD6137-25B0-43D5-845B-B4FDF4E9F5D7
Andricus coriariformis
Melika, Challis & Stone, 2008
Host plants.
Israel
:
Q. libani
(sexual generation) and
Q. boissieri
(asexual generation).
Iran
:
Q. infectoria
.
Life history.
Prior to the present study, only the asexual generation of this species was known and the association between it and the sexual generations is established here for the first time. Galls of the sexual generation develop in catkin galls of oaks from section
Cerris
, are up to
6 mm
long, conical, pointy and singlechambered, usually in clusters (as in
Fig. 49
). They are light green and soft when very young, turning bright red when mature. Galls of the asexual generation develop on oaks from section
Quercus
, are up to
20 mm
in diameter, usually composed of three splayed, thick and smooth lobes, each ending in a few elongate projections pointing in the same direction and only slightly curved (
Fig. 17
). The gall is green when young, turning pale straw-yellow, hard and woody when mature.
Phenology.
Galls of the sexual generation begin to develop in March-April and adults emerge from them in May. Galls of the asexual generation begin to develop in August and adults emerge from them in January-February, after which the galls may remain on the tree for several years
Distribution.
Israel
: Mt. Hermon
1500 and
1780
m.a.s.l. Elsewhere: galls of the asexual generation are known from
Iran
and
Turkey
(
Tavakoli
et al
. 2008
;
Mutun & Dinç 2015
).
Comments.
Galls of the asexual generation of this species may be confused with those of
A. coriarius
(
Figs 15–16
), but
A. coriarius
galls have more numerous spine-like projections that vary in length unlike the three thick lobes of
A. coriaformis
galls. Galls of the sexual generation are very similar to those of
A. grossulariae
on
Q. ithaburensis
(
Figs 49–50
) but are found on
Q. libani
. Molecular data suggest that adults reared from these galls are genetically identical to those of
A. coriariformis
(Shachar, unpublished data) and thus represent the sexual generation of
A. coriariformis
, hence the species is now known from galls and adults of both generations.