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
Pseudoneuroterus macropterus
(
Hartig, 1843
)
Host plants.
Israel
:
Q. ithaburensis
.
Elsewhere: Several species from section
Cerris
.
Life history.
Prior to the present study, only the asexual generation of this species was known (
Sternlicht 1968b
) and the association between it and its sexual generation is established here for the first time. Galls of the asexual generation are multi-chambered stem swellings,
5–60 mm
in length, of the same color of the branch (
Fig.
12
in
Sternlicht 1968b
). The sexual generation develops in small, conical bud galls, up to
2 mm
in length, inside the basal part of a bud scale (
Fig. 55
). The single-chambered gall is green when young, light brown when mature, with thin and delicate walls but harder than the scale itself. The larva occupies the entire volume of the gall.
Phenology.
Galls of the sexual generation were found in early February and adults emerged from them later that month. Galls of the asexual generation become evident in summer but no adults were reared from them in the present study.
Sternlicht (1968b)
reported to have reared adults in February-March or in September-October of the following year.
Distribution.
Israel
: Sexual generation: Hosha’aya, Alonim, Tiv’on, Hasharon Forest. Asexual generation: Rare, observed only once in the present study in Yehudiyya. Also recorded from Tiv’on (as
Neuroterus macropterus
) (
Sternlicht 1968b
). Elsewhere: Widespread and locally common from Central Europe to
Iran
.
Comments.
Sternlicht (1968b)
attributed the galls of this species to the sexual generation of
Neuroterus aprilinus
Mayr
(his
Figs 21–22
), a species that was later synonymized under
Neuroterus politus
(
Pujade-Villar & Ros-Farré 2001
)
. However, the galls we found are ovoid and thin-walled whereas those of
N. politus
are thickwalled and pointed apically, and our molecular data suggest that this species does not belong in
Neuroterus
. Instead, these data suggest that adults reared from the sexual generation galls are genetically identical to those of
Pseudoneuroterus macropterus
(based on sequences in Genbank), and thus represent the sexual generation of that species. Therefore,
P. macropterus
is now known from galls and adults of both generations.