Compression fossils of three genera and six species of Mymaridae (Hymenoptera: Chalcidoidea) are described from 46 million year old Kishenehn oil shales in Montana, USA. Two new genera are described: Eoeustochus Huber, gen. n., with two included species, Eoeustochus kishenehn Huber (type species) and Eoeustochus borchersi Huber, sp. n., and Eoanaphes, gen. n., with Eoanaphes stethynioides Huber...

Two new taxa, Gonatocerus (Lymaenon) bulgaricus Donev & Triapitsyn (Bulgaria, and also apparently mainland Greece) and G. (Lymaenon) mediterraneus Donev & Triapitsyn (Greece-Crete Island) are described, diagnosed, and illustrated. Also, a species tentatively identified as G (Lymaenon) ?beshbarmak Triapitsyn is reported from mainland Greece. If the species is indeed G. beshbarmak then this is th...

Two leafhopper (Hemiptera Cicadellidae) hosts are reported for Gonatocerus (Gonatocerus) californicus Girault (Hymenoptera Mymaridae): Exitianus obscurinervis (Stal) and Spangbergiella vulnerata lacerdae Signoret. At El Manantial site in Tucumán Province, Argentina, G. californicus emerged from 7.1% and 90.5% of the parasitized sentinel eggs of the respective host on maize plants. Notes on the ...

The 400+ nominal species of the worldwide genus Gonatocerus Nees are reclassified into 14 genera that are placed in Gonatocerini, which is defined by three putative autapomorphies. A key to the 13 extant genera of Gonatocerini is given, based on females. Five previously described genus-group taxa are recognized: Cosmocomoidea Howard stat. rev. (= ater group, of authors), Gahanopsis Ogloblin sta...

• Suitability of Fertilized and Unfertilized Eggs of the Glassy-winged Sharpshooter for the Egg Parasitoid Gonatocerus morrilli Rodrigo Krugner ............................................................................................................................................. 11 • A Method to Quantify Glassy-winged Sharpshooter Egg Maturation Mark Sisterson ...............................

1. Objectives The main objective was to measure real lifetime contributions of individual female Gonatocerus ashmeadi to parasitism of glassy-winged sharpshooter (GWSS) egg masses in citrus orchards. However it is unknown whether G. ashmeadi is proor syn-ovigenic. Gonatocerus parasitoids are generally classified as strictly pro-ovigenic (Jervis and Copland, 1996). Jervis et al. (2001) calculate...

The Palaearctic species of the common and speciose fairyfly genus Gonatocerus Nees ab Esenbeck (Hymenoptera: My-maridae) are reviewed. Illustrated identification keys are provided to separate the three subgenera of Gonatocerus that oc-cur in the region and to females of the species in each subgenus. Distribution ranges, including new records of extralimital specimens examined, and known host as...

The egg parasitoid Gonatocerus ashmeadi Girault (Hymenoptera: Mymaridae), was introduced into French Polynesia as a biological control agent to control the invasive plant feeding pest Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae). The short-distance dispersal of G. ashmeadi was monitored as part of the biological control program. G. ashmeadi showed exponential dispersal capacity wi...