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Infraorder: Pentatomomorpha. Superfamily: Pentatomoidea. Family: Scutelleridae . Subfamily: Eurygastrinae. Genus: Eurygaster. Subject: Eurygaster integriceps. PDF | On Jul 1, , Melinda Moir and others published Sunn pest, Eurygaster integriceps (Puton, ) (Hemiptera: Scutelleridae) Pest Risk. Sunn Pest, Eurygaster integriceps Puton (Hemiptera: Scutelleridae), is the most serious pest of wheat in West and Central Asia. Following.

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It is a major pest of cereal crops especially wheatbarley and oats. Oviposition lasts 30 to 50 days. The eighth paratergite is paired, triangular and bears a spiracle on its anterolateral surface, while the ninth paratergites comparatively small.

Phallobase Basal plate ; Thap: In this study, four constant temperatures were used to examine the effects on fecundity, developmental time, and survival. Head Dorsal view ; b. Studying the role of naturally occurring Telenomines. The obligatory adult diapause renders it eurytaster to rear a cohort from egg to egg. The legs are brown colored, coxae are elongate rounded, trochanter are nearly triangular, fore-femorae are dilated medially and shorter than the middle and hind-femorae, hind-femorae are longest amongst all, tibiae flattened dorso-ventrally and more dilated distally, legs tarsi composed of three segments, covered with fine bristles or hairs, 3 rd longest and second shortest, the distal tarsal segment is joined with pre-tarsus which is composed of two large black hooks like claws and sac like pulvillus in between, legs are ornamented with rows of moderate size of spines and covered by hairs Figures 7a – 7c.

Proctiger; 9 th pt: While feeding, the sunn bugs inject proteolytic and amlolytic enzymes into the wheat causing breakdown of the gluten which reduces the quality of the flour resulting in the production of inferior dough. While Phallus which is the main copulatory organ consists of a brown proximal basal plate and a distal sclerotized aedeagus which consists of phallosoma and holds integricceps membranous lobes, ventrolateral lobes and the thecal black appendages on either side of the proximal portion of the aedeagus, this thecal appendages regarded as eurugaster important diagnostic character which distinguish this species.


Male abdomen Ventral view. Average fecundities increased to Females oviposit in clusters of eggs, mostly on the undersides of smooth leaves. Entomopathogenic nematodes and various isolates of entompathogenic fungi also infect and kill the pests. Toxicity of fenitrothion, an organophosphorus pesticide, against summer population of Sunn pest, Eurygaster integriceps Put.

Zomorrodi found that feeding on wheat kernels caused a 3-fold increase in oviposition compared to feeding on seedlings. The following life table parameters were measured using the procedures of Carey High temperatures and humidities promote pest outbreaks whereas harsh winters adversely affect adults in diapause, decreasing integrjceps extent of pest outbreaks.

From Wikipedia, the free encyclopedia. Such color polymorphism may be due to genetic variability or in response to environmental conditions.

October 30, ; Accepted Date: In Russian Kerzhner I. However, the population was affected negatively by increasing temperature in his study because direct mortality due to high temperatures was considerable, and the adults left the fields after emergence.

Bug with varying coloration, more often light brown, 12 mm in length. These groups are also recognized as migrant and resident bugs, respectively Radjabi These data provided constant values for developmental time ingegriceps to adult molt and immature survival rate at each temperature.

Eurygaster integriceps

The 9 th segment in male modified into a quadrangular brown colored structure known as the pygophore or genital capsule in which the organs of copulation located within it, pygophore has two openings, the anterior proximal and the dorsoposterior distal, the latter larger and through copulation the aedeagus expanded through this opening, pygophore broader and cup-like.


The body is a broad oval about 12 millimetres 0. This has an indirect effect on the next generation by shortening its feeding window. Methods in Ecological and Agricultural Entomology. The dorsal plate scutellum is curved and is as long as the abdomen, currently 19 species of Eurygaster are known worldwide [ 26 ], these comprise 14 species including one wurygaster from the palearctic region and five species from the Nearctic region.

Journal List J Insect Sci v. Researchers at the Entomology Research Laboratory at the University of Vermont and agricultural researchers working throughout the infested region have been co-operating since to produce an integrated management plan for the sunn pest. Fertility eggs, maximum Spermatheca simple and obvious from the dorsal view of the female genitalia as pale brown appendages Figures 11a and 11b.

Research Article Open Access. Insecta, HemimetabolaHemipteraHeteropteraScutelleridae.

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The post-diapause pre-oviposition period decreased with increasing temperature Figure 3. Feeds on various cereal grasses, eating also integricps pulps on many dicotyledons and even trees occasionally maple, ash, etc.

Note sur la punaise des cereal Eurygaster integriceps Put. The Sunn pest is a serious pest of graminaceous crops like wheat and barley.