Ashraf Elhalawany

• Professor
• Professor (Associate) at Plant Protection Research Institute (PPRI) A.R.C Egypt

Biological characteristics, life table parameters and predation rate of the predatory mite Neoseiulus californicus (McGregor) under the laboratory conditions of 25 ± 2°C, 75% R.H. and photoperiod of 12L: 12D was studied. Prey types were Brevipalpus phoenicis (Geijskes) motile stages, Tetranychus urticae Koch eggs and motile stages and Tegolophus gu...

Developmental times and reproduction rates of the date palm dust mite Oligonychus afrasiatlczs (McG.) were studied on three different date pahn tree parts (i.e. kamry fruit stage (characterized by the green colour offruits), yellow khelal stage and inner frond) of Khalas variety at laboratory conditions of 15, 25 & 35 + 2'C;30 &70 + 5% R.H. and 16:...

Eriophyoid mites offer a significant ecosystem service by weed control. They induce malformations (leaf rolling, erinea, galls, stunting growth, blistering), rusting, bronzing, damages of seeds, and transmit viruses to their host plants. During a survey in Egypt, two eriophyoid species were recorded for the first time in the country on Cyperus rotu...

Fig trees are one of the most economically important fruit crops in Egypt. The current research aimed to study the population dynamics and chemical control of some phytophagous mites associated with fig orchards in Tanan village, Qalubia governorate, Egypt, from Mar. 2022 to Feb. 2024. The results showed the incidence of 12 mite species belonging t...

The eriophyid mite, Calacarus jasmini rec. Nov., associated with Jasminum grandiflorum, was recorded for the first time in Egypt during a field survey conducted at Giza governorate from Mar. to Dec. 2023. It caused distortion and spots on the upper leaf surface. A complementary description of this species is given, based on adult females, males, an...

Tegolophus guavae (Boczek), Brevipalpus phoenicis (Geijskes), and Tetranychus urticae Koch are plant-feeding mite pests that cause severe damage to the foliage and fruits of guava trees in Egypt. The phytoseiid mite, Neoseiulus californicus (McGregor), was released at three densities (100, 200, and 300 predators/tree). The results indicated that th...

Tamarisk is an invasive evergreen shrub native to arid regions of Africa and Eurasia and is considered a weed in some countries with dry climates. The complex of gall mites from tamarisks includes fourteen species from four genera of the family Eriophyidae. We reinvestigated the type species of the genus Dicruvasates, D. tamaricis from Egypt, descr...

In Egypt, serious piercing-sucking pests such as the western flower thrips, Frankliniella occidentalis, white fly, Bemisia tabaci, the broad mite, Polyphagotarsonemus latus, and the two-spotted spider mite, Tetranychus urticae cause significant yield losses in sweet pepper crop grown in greenhouses. The purpose of this research is to assess the eff...

The two-spotted spider mite Tetranychus urticae Koch, the date palm dust mite Oligonychus afrasiaticus (McGregor), and the citrus brown mite Eutetranychus orientalis (Klein) of family Tetranychidae are key pests of fruit trees, field crops, and ornamentals that cause significant yield losses. The purpose of this research was to assess the effect of...

This paper reports on eriophyoid mites of the genus Aceria Keifer (Eriophyoidea, Eriophyidae) associated with Tamarisk plants (Tamarix spp., Tamaricaceae) in Egypt and South Africa. Three new Aceria species are described: A. aegyptytamaricis n. sp. causing green galls on buds and twigs of Tamarix senegalensis DC. in Egypt, A. noorspoortiensis n. sp...

A histiostomatid hypopi, Histiostoma shandaweeli sp. nov., was collected from the garlic plants cultivated in the farm of Shandaweel Agricultural Research Station, Sohag governorate, Egypt. The alive hypopi were transferred into the laboratory to study the complete life cycle of this species under laboratory conditions on suitable food (this study...

Population fluctuation of the most abundant mite species inhabiting mango, Mangifera indica L. (Anacardiaceae), as one of the important fruit trees at Qalyubia governorate, Egypt was studied from August 2020 to September 2022. Results indicated the occurrence of 19 mite species from 18 genera in 10 families. Mango bud mite, Aceria mangiferae Sayed,...

Two new Eriophyes species are described and illustrated on tamarisk (athel) plants from Egypt. They are Eriophyes aegyptitamarix sp. nov., collected from the base of leaves and twigs of Tamarix senegalensis DC. (Tamaricaceae) and caused rusting symptoms, and Eriophyes gizaensis sp. nov., collected from rounded green galls on buds and twigs of T. se...

Professor Mohamed Abd El-Aziz Zaher sadly passed away on October 12th, 2022, aged 95 years, leaving his native village of Meet El Amel, Aga, Dakahlia governorate, Egypt where he was born on February10th, 1927, his colleagues and friends, and the worldwide community of acarologists. With this passing, the scientific world community loses one of the...

The developmental time and life table of Neoseiulus californicus (McGregor) (Acari: Phytoseiidae) preying on Tetranychus urticae Koch (Acari: Tetranychidae) and three astigmatid mites, Carpoglyphus lactis (L.) (Acari: Carpoglyphidae), Rhizoglyphus echinopus (Fumouze and Robin) (Acari: Acaridae) and Tyrophagus putrescentiae (Schrank) (Acari: Acarida...

Eutetranychus orientalis (Klein) (Tetranychidae) is a worldwide polyphagous mite causing economic damage to several crops. A laboratory experiments was carried out to evaluate the pathogenicity of two entomopathogenic fungi, Beauveria bassiana (Balsamo) Vuillemin and Metarhizium anisopliae (Metschnikoff) Sorokin, on E. orientalis at three spore con...

Eriophyoids have a significant economic impact as weed pests, particularly when it comes to the malformations they can occasionally cause, such as rusting, bronzing, leaf rolling, erineum, bud galls, stunting, blisters, leaf galls, damaged seeds, and mosaic virus disease. Six eriophyoid mite species collected from Egyptian weeds are described. Acer...

This study deals with biology and life table parameters of the predatory mite, Cheyletus malaccensis Oudemans were evaluated on three astigmatid mites as prey (i.e. Acarus siro (Linnaeus), Caloglyphus berlesei (Michael) and Tyrophagus putrescentiae (Schrank)) under laboratory conditions. Three constant temperatures (22, 27 and 32 ± 2°C) and constan...

Four eriophyid mite species were collected on plants during field survey in Egypt. Abacarus sacchari ChannaBasavanna is recorded for the first time from Egypt and a supplementary morphological description and illustrations are given. A new species, Aculodes sacchari sp. nov., is vagrant in grooves on the inner surface of the leaves of Saccharum off...

During a survey on eriophyoid mites associated with plants in Egypt, six eriophyoid species were collected. The genus Neserella Meyer & Ueckermann, 1989 is reported for the first time from Egypt based on newly collected samples of N. capreifoliae Meyer & Ueckermann, 1989 vagrant on leaves of Ficus carica L. (Moraceae). Aceria sissoae sp. nov. colle...

Biological aspects, life table parameters, predation capacity and release of the predatory mite, Kleemannia kosi El-Badry, Nasr & Hafez (Mesostigmata: Ameroseiidae) for controlling three garlic (Allium sativum L.) pests ABSTRACT Biological aspects and life table parameters of the mesostigmatid mite, Kleemannia kosi El-Badry, Nasr & Hafez (Family: A...

During surveys of eriophyoid mites on Mangifera indica L. (Anacardiaceae) from Egypt, a new species Aceria aegyptindicae sp. nov., was collected ,described and illustrated. This mite was found in colonies under white leaf coatings on the upper and lower leaf surfaces, usually along the midribs, in association with Cisaberoptus kenyae Keifer, 1966....

Eriophyoids are of great economic importance as pests of weeds, particularly in causing sometimes deformities such as bud galls, stunting, rusting, bronzing, leaf rolling, erineum, blisters, galls, coating, damaged seeds and mosaic virus disease. During the survey of eriophyoid mite fauna from Qualyubia, Cairo and Gharbia governorates in Egypt from...

This work evaluates the predator, Neoseiulus barkeri as a biocontrol agent for Aceria oleae and Tegolophus hassani on olive seedlings in Egypt. Three release rates (50, 100 and 150 predators/olive seedlings) were tested, and the numbers of N. barkeri and eriophyids were assessed over the 2017 and 2018 seasons. For both years, the densities of N. ba...

Biological aspects, life table parameters, predation capacity and release of the predatory mite, Kleemannia kosi El-Badry, Nasr & Hafez (Mesostigmata: Ameroseiidae) for controlling three garlic (Allium sativum L.) pests ABSTRACT Biological aspects and life table parameters of the mesostigmatid mite, Kleemannia kosi El-Badry, Nasr & Hafez (Family: A...

Biological aspects, life table parameters, predation capacity and release of the predatory mite, Kleemannia kosi El-Badry, Nasr & Hafez (Mesostigmata: Ameroseiidae) for controlling three garlic (Allium sativum L.) pests ABSTRACT Biological aspects and life table parameters of the mesostigmatid mite, Kleemannia kosi El-Badry, Nasr & Hafez (Family: A...

Incidence and population dynamics of mites inhabiting date palm trees were studied at two localities (Tanan village in Qalyubia and Paris oasis in the New Valley Governorate) from March to November during two seasons 2017-2018. Obtained results indicated that 22 mite species belonging to 21 genera under 15 families. These mites were classified acco...

Five new eriophyoid mites infesting weeds of the family Poaceae are described and illustrated from Egypt. They are Abacarus stagninis sp. nov. from Echinochloa stagnina (Retz.) P. Beauv., vagrants in grooves between veins on the upper leaf surface, causing discoloration of the leaves; and four new species from genus Aceria (A. echinochloae sp. nov....

Entomology Journal publishes original research papers and reviews from any entomological discipline or from directly allied fields in ecology, behavioral biology, For several years the palm dust mite, Oligonychus afrasiaticus (McGregor) has been an economically important pest of date palm. Biology and life table parameters of the date dust mite, O....

The objective of this study was to evaluate the toxicity and repellency effect of Rosemary, Rosmarinus officinalis L. (herb) and Coriander, Coriandrum sativum L. (fruits) essential oils against Eutetranychus orientalis (Klein). Essential oils were extracted using aqueous extract. The chemical composition of the extracted essential oils was characte...

Thrips tabaci Lindeman (Thysanoptera: Thripidae) attack many vegetable crops specially onion causing grate economic damage on onion crops. Individuals of thrips are protected between the inner leaves of the plant where the pupal stage is spent in the soil. Field trial were conducted during two seasons 2017 and 2018 at Moshtohor, Toukh district, Qal...

The citrus brown mite (CBM), Eutetranychus orientalis (Klein, 1936) is a key pest of citrus, date palm, filed crops and ornamentals. Development time, reproduction and life table parameters of E. orientalis were studied on leaves of six host plants: castor bean, date palm, Indian laburnum, mulberry, plum and sweet potato under laboratory conditions...

Superfamily Eriophyoidea (Acari: Prostigmata) is tiny haplodiploid mites and strictly phytophagous, making galls, forming nests and living freely on plants. During the present study a survey of eriophyoid mites associated with plants of the family Moraceae from Egypt was studied. The results indicated that eight eriophyoid species were collected. T...

The invasive weed cogon grass Imperata cylindrica (Poaceae) is a perennial grass not only in crops but also in natural areas, causing economic and environmental damages. In this paper, five new eriophyoid mites (subfamily Phyllocoptinae) infesting Imperata cylindrica are described from Egypt: three new species from genus Abacarus (A. imperatus sp....

Eriophyoids are of great economic importance as pests of weeds, particularly in causing sometimes deformities such as bud galls, stunting, rusting, bronzing, leaf rolling, erineum, blisters, galls, coating, damaged seeds and mosaic virus disease. During the survey of eriophyoid mite fauna from Qualyubia, Cairo and Gharbia governorates in Egypt from...

A new eriophyoid mite species, Heterotergum zaheri sp. nov. from Ziziphus spina-christi (L.) Desf (Rhamnaceae) is described and illustrated. This mite is vagrant in the tender apical shoots (between hairs) and on the lower surface of young leaves. It causes no apparent damage. In addition, a supplementary description of Vittacus bougainvilleae (Kei...

Three new Aceria species of eriophyoid mites collected from Imperata cylindrica (L.) (Poaceae) in Egypt were described and illustrated– Aceria aegyptimperata sp. nov., A. cylindricae sp. nov., and A. qualyubi sp. nov. A. aegyptimperata is a vagrant underneath inner surface of the leaf sheath around stem and no symptoms were observed; the other two...

A new vagrant eriophyoid mite species, Aculus polygonumnis sp. nov. collected from the weed Polygonum salicifolium Brouss. Ex Willd (Polygonaceae) was described and illustrated from Egypt. Redescription of two first record species, Aceria salicina (Nalepa, 1911), rec. n. collected from Salix babylonica L. and S. mucronata Thunb (Salicaceae), causin...

The economic importance of date palm tree Phoenix, dactylifera L. exceeds its nutrition value as the most valuable fruit. Preserve Egypt's international status as a large producer of dates in the world, requires tackling pests that attack palm trees. Diseases and pathogen pests are causing great economic loss to the growers, reducing about 52 % of...

Entomology Journal publishes original research papers and reviews from any entomological discipline or from directly allied fields in ecology, behavioral biology, Keywords: Essential oils Tetranychus urticae Phytoseiidae Spearmint Rosemary Chamomile Coriander Seven plant essential oils were tested for their toxicity against eggs and adults of Tetra...

The journal of Toxicology and pest control is one of the series issued twice by the Egyptian Academic Journal of Biological Sciences, and is devoted to publication of original papers related to the interaction between insects and their environment. The goal of the journal is to advance the scientific understanding of mechanisms of toxicity. Emphasi...

Seven plant essential oils were tested for their toxicity against eggs and adults of Tetranychus urticae Koch as well as adults of the two predatory mites Phytoseiulus persimilis Athias-Henriot, Neoseiulus californicus (McGregor) under laboratory conditions. Essential oils were extracted with water distillation from lemon grass, spearmint, rosemary...

A new species belonging to genus Epitrimerus Nalepa from Egypt is described and illustrated, namely Epitrimerus lantanae sp. nov. from Lantana camara L. (Verbenaceae). The new species is vagrant on the lower and upper leaf surfaces of their host plant. No damage to the host was observed. A key to the species of Epitrimerus in Egypt is provided. In...

Six eriophyoid mites, including four new species and two new records, from Egypt are described and illustrated. They are Stenacis aegyptius sp. nov., on Cupressus sempervirens L. (Cupressaceae); Aceria donacis Mohanasundaram, 1983, rec. n. on Arundo donax L. (Poaceae); Aceria bambusae Channabasavanna, 1966, rec. n. on Bambusa vulgaris Schrad. ex J....

A new species of eriophyid mites from Egypt is described and illustrated. It is Schizacea aegyptimperata sp. nov. which has been found on Imperata cylindrical (L.) (Poaceae) from Egypt. This species is new to science and the genus is new record for Egyptian mite fauna. It causes rust on inner surface of leaves of the host plant. A key to the specie...

Two new species of eriophyoid mites found in Egypt are described and illustrated. They are Epitrimerus abousettai sp. nov. and Stenacis aegyptius sp. nov., were collected on Cupressus sempervirens L. (Cupressaceae). Both species are vagrants on the host plants.

Four new Aceria species of eriophyoid mites found in Egypt are described and illustrated. They are Aceria aegyptiacacia sp. nov., A. metwallii sp. nov., A. awadi sp. nov. and A. saidi sp. nov. collected from leaf galls of Acacia nilotica (L.) Delile (Leguminosae). The eriophyid mite species described here form red galls on the leaves. These species...

A new species of the genus Abacarus Keifer (Eriophyidae), recorded on Arundo donax L. (Poaceae) in Egypt as Abacarus donacis sp. nov., is described and illustrated. Additionally redescription of two species, Aceria donacis Mohanasundaram, 1983, inhabiting Arundo donax L. (Poaceae) and Aceria bambusae Channabasavanna, 1966, inhabiting Bambusa vulgar...

The present study reports four new records of eriophyid mites collected from Egypt during 2012 to 2015. Cecidophyopsis rosmarinusis Wang & Elhalawany, 2014 was on Rosmarinus officinalis L. (Lamiaceae); Stenacis palomaris Keifer, 1970 was on Salix babylonica L. and S. matsudana Thunb (Salicaceae); Epitrimerus saudiarabis Wang & Elhalawany, 2014 was...

Two new eriophyoid mite species were found in Egypt. They were described and illustrated as Tetra ibrahimi sp. nov. and Aculops tanani sp. nov. They were collected from Acacia nilotica (L.) Delile (Fabaceae). Both species are vagrants on the undersurface of leaves and pods causing rusting symptoms.

Three new species and seven new records of eriophyoid mite species from Saudi Arabia are described and illustrated. They are Mackiella phoenicis Keifer, 1939 rec. nov. on Phoenix dactylifera L. (Arecaceae), Cecidophyopsis rosmarinusis sp. nov. on Rosmarinus officinalis L. (Lamiaceae), Aceria cynodoniensis Sayed, 1946 rec. nov. on Sesuvium portulaca...

Aculops awadi, a replacement species name for Aculops ucaciae Abou-Awad& Elsawi (Prostigmata : Eriophyidae)

Surveying mites associated with guava trees (Psidium guajava L.) at Qalyoubia govemorate, Egypt indicated the occurrence of main five ones (i.e. the eriophyid, Tegolophus guavae (Boczek), the tenuipalpid, Brevipalpus phoenicis (Ceijskes), the tetranychid, Tetranychus urticae Koch, the phytoseiid, Amblyseius swirskii A.-H. and the stigmaeid, Agistem...

The genus Echinacrus Keifer, 1966 is reported for the first time from Egypt. A new species Echinacrus halawanii sp. nov. from Acacia arabica var. nilotica (L.) (Fabaceae) has been reported. Adult and nymph stages were described and illustrated. A checklist and Key to all species of the genus are provided. This mite is vagrant on acacia lower leaf s...

In the recent years Guava trees were infested with the rust mite Tegolophus guavae (Boczek) and Tenuipalpid mite Brevipalpus phoenicis (Geijskes) El-halawany and Abou-Setta (2014). Investigation guava trees showed the population abundance of phytophagous mite, T. guavae in high numbers on leaves and B. phoenicis on leaves and fruits. The present in...

The two-spotted spider mite, Tetranychus urticae Koch is one of the most important pests of deciduous fruit trees in Egypt. The reproduction, survival, and life table parameters of T. urticae on Kostata and Hachiya Persimmon cultivars leaves were studied under laboratory conditions of 15, 20, 25 and 30 ± 2ºC, 70 ± 5% RH and a photoperiod of 16L: 8D...

Developmental times and reproduction rates of the two-spotted spider mite Tetranychus urticae Koch were studied when fed on leaves of two pear varieties (i.e. Lacont and Hood varieties) under laboratory conditions of 15, 20, 25 & 30 ± 2°C, 70% ± 5% RH. The longest developmental stages reached 30.6 and 30.1 days for female and male at 15°C when...

Developmental times and reproduction rates of the two-spotted spider mite Tetranychus urticae Koch were studied when fed on leaves of two pear varieties (i.e. Lacont and Hood varieties) under laboratory conditions of 15, 20, 25 & 30 ± 2°C, 70% ± 5% RH. The longest developmental stages reached 30.6 and 30.1 days for female and male at 15°C when the...

In a field survey, 16 eriophyoid mite species were collected from eight species of fruit trees, among which two species were found to be new record to Egypt. They were Tegolophus guavae (Boczek, 1960) on Psidium guajava L. (Myrtaceae) which causes rust on leaves, and Aceria ziziphi Mohanasundaram, 1990, vagrant without damage on Ziziphus spina-chri...

The two-spotted spider mite Tetranychus urticae Koch and European red mite Panonychus ulmi (Koch) (Family: Tetranychidae) are considered the important two species mite pests attacking apple trees causing serious damage of leaves and fruits. To enhance the exportation and reduce the applications of pesticides. We concern in this study to use the coc...

Evaluating the efficiency of release different levels of the predatory mite N. californicus (McGregor) for controlling of T. urticae and P. ulmi. The predatory individuals were 10; 20 and 30/ young apple. The predatory mite N. californicus released on young apple for controlling T. urticae in 2 nd April 2006 when spider mite T. urticae infestation...

The present study aimed to throw light on the incidence of mites inhabiting Fig (Ficus carica L.) and Pear (Pyrus communis L.) in some different localities of Egypt. In addition, the population dynamics of certain mites, occurring with Sultani fig variety and Lacont Pear variety under environmental conditions of the field at Sinhera district, Qalub...