Biharean Biologist (2009) Vol. 3, No.2, Pp.: 157-159
P-ISSN: 1843-5637, E-ISSN: 2065-1155 Article No.: 031204
©Biharean Biologist, Oradea, Romania, 2009 Biharean Biol. 3, 2009
http://biologie-oradea.xhost.ro/BihBiol/index.html Oradea, Romania
New distribution and host record of Eurytoma scrophulariae Zerova, 1981
(Hym.: Eurytomidae) from south of Iran
Hosseinali LOTFALIZADEH
1
and Abbas MOHAMMADI-KHORAMABADI
2
1. Department of Plant Protection, Faculty of Agriculture, Azad University of Tabriz, Tabriz, Iran E-mail: hlotfalizadeh2001@yahoo.com
2. College of Agriculture and Natural Resources of Darab, Shiraz University , Darab, P.O.B. 335, Iran
Abstract. Eurytoma scrophulariae Zerova, 1981 (Hymenoptera: Chalcidoidea, Eurytomidae) was reared on Stator
limbatus (Horn, 1873) (Coleoptera: Chrysomelidae: Bruchinae) as a seed-eater beetle of Prosopis stephaniana (Willd.)
(Fabaceae). It is a new record of E. scrophulariae from south and center of Iran. The association of E. scrophulariae on
S. limbatus and P. stephaniana is newly described.
Keywords: Eurytoma scrophulariae, Eurytomidae, parasitoid, Stator limbatus
Recently junior author (AMK) collected seeds of Prosopis
stephaniana (Willd.) (Fabaceae) in the south of Iran (Fars
Province, Darab) in 15.III.2008. Within these seeds
several specimens of the Eurytomidae family (Hyme-
noptera: Chalcidoidea) emerged in late March to April
2008 (Figs 5-6). The pupation lasted approximately two
weeks. Specimens were presumably placed in alcohol
75% shortly after emergence. They were dehydrated,
card mounted and identified as Eurytoma scrophulariae
Zerova, 1981 using available keys for the Palaearctic
region (Zerova 1995, Zerova & Seryogina 2006) by
senior author (HL).
These specimens were considered as seed-eaters of
P. stephaniana, whilst the species included in this group
of Eurytoma are parasitic. Hence, biological information
was doubted and intensive verifications showed it lives
parasitically on a seed-eater beetle, Stator limbatus
(Horn, 1873) (Coleoptera: Chrysomelidae: Bruchinae)
(Figs 1-2).
Notes. Traditionally, the genus Eurytoma Illiger is a
very large genus within the family. It has been recently
limited and re-defined based on a phylogenetic analysis
(Lotfalizadeh et al. 2007). Over 695 species of the genus
Eurytoma that occur worldwide, 305 species are
distributed in the Palaearctic region (Noyes 2009);
however, only nine species are known from Iran (Noyes
2009, Lotfalizadeh et al. 2007). Hence, E. scrophulariae is
new for Iranian fauna. We collected this species in
another locality in the centre of Iran (Yazd) on
5.VIII.2008 and it seems that it has two generations
annually.
The Eurytoma scrophulariae belongs to the nodularis-
group (Lotfalizadeh et al. 2007) or robusta-group of the
genus Eurytoma (Zerova and Seryogina 2006). The entire
species are exclusively parasitoid of different orders of
insects’ seed, pod and wood-eater mainly within the
beetles, wasps and flies. Zerova and Seryogina (2006)
summarized the trophic relationship of this group and
listed them in a table. Based on phylogentic studies of
Lotfalizadeh et al. (2007), it belongs to the genus
Aximopsis Ashmead, 1904. Gates et al. (2006) discussed
diagnostic characters of the genus with two synapomor-
phies supporting its monophyly. Nevertheless, only one
of them has been confirmed by Lotfalizadeh et al. (2007)
as a true synapomorphy.
The Eurytoma scrophulariae superficially resembles E.
nona Zerova, having a much wider head. It differs from
it distinctly in a rounded procoxal tooth (from a lateral
view). It also resembles Eurytoma alhagicola Zerova, from
which it differs by characters outlined in Zerova and
Seryogina (2006) and Zerova (1995) as follow: length
of gaster and forewing nervation also by shape of
antennal segments.
Diagnosis. (Figs 7-10)- The head is considerably
wider than the thorax, dorsally, 2 times wider than
broad; the eyes large, convex and the longitudinal
diameter of the eye noticeably exceeds the length of
the cheek; lower face mostly strigose, ridges reaching
antennal toruli above (Fig.9), face punctured latero-
dorsally; intertorular space (ITS) deeply sulcate and
raised laterally; lateral margin of antennal scrobes
carinate, forming a raised lobe just above toruli; gena
with a raised conspicuous carina (GNC= genal
carina); preorbital rows of punctures visible as a faint
preorbital carinae and a row of punctures visible along
the posterior margin of eyes; postgenal laminae well
expanded, visible in lateral view as a small tooth; all of
funicular segments longer than broad, equal in length
(Fig.8); mesopleuron, ventral shelf present and hori-
zontal, delimited anteriorly by ventral part of epicne-