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
Aphelonyx persica
Melika, Stone, Sadeghi & Pujade-Villar, 2004
Host plants.
Israel
:
Q. ithaburensis
and
Q. libani
.
Elsewhere:
Q. libani
,
Q. brantii
,
Q. castaneifolia
.
Life history.
Known only from the bud galls of the asexual generation, which are spherical, single-chambered,
10–14 mm
in diameter, with velvety, sometimes slightly wrinkled surface, broadly attached to the branch or sometimes to the trunk (
Fig. 37
), often in clusters of 5–8. The gall contains an internal ovoid chamber that is attached to the inside wall in young galls but detaches from it and rolls freely inside the mature gall (
Fig. 38
). Young galls are light green, turning brown when mature. Old galls remain on the trees for several years.
Phenology.
Galls appear in August and adults emerge from them in October-November. In the present study one adult emerged from a gall on
Q. libani
in January.
Distribution.
Israel
: Common on
Q. ithaburensis
throughout its distribution range; on
Q. libani
found only on Mt. Hermon at
1780 m
.a.s.l. Elsewhere:
Turkey
,
Syria
,
Lebanon
,
Iran
.
Comments.
Galls of
A. persica
are very similar to those of
A. cerricola
and
A. kordestanica
but these species have not been found in
Israel
. The galls are often invaded by the inquiline
Synergus variabilis
Mayr
, especially on
Q. ithaburensis
. An invaded gall is bigger, irregularly shaped and multichambered (
Figs 39–40
), whereas an uninvaded gall is spherical and single-chambered (
Figs 37–38
).
Sternlicht (1968b)
listed the axesual generation of
Andricus kollari
Hartig
as occurring in
Israel
(his
Figs 18–20
) but we never found this species in
Israel
and conclude that Sternlicht mistook its galls for those of
Aphelonyx persica
. Galls of the two species are somewhat similar in shape and colour but those of
A. kollari
develop only on oaks from section
Quercus
.