Observation of a predaceous gall midge, Lestodiplosis sp. (Diptera: Cecidomyiidae), preying on the larvae of the smaller tea tortrix, Adoxophyes honmai Yasuda, and the oriental tea tortrix, Homona magnanima Diakonoff (Lepidoptera: Tortricidae)

Experiments were carried out to assess some insecticide modules against major insect pests of rice. Each module consists of a basal application of carbofuran 3G @ 1 kg a.i ha-1 at 20 DAT and Rynaxypyr 20 SC @ 30 g a.i ha-1 at 45 DAT except untreated control. All modules differ with each other only in third treatment which was applied in 65 DAT. The third treatment includes: Imidacloprid 17.8 SL @ 27 g a.i ha-1, Pymetrozine 50 WG @ 150 g a.i ha-1, Triflumezopyrim 106 SC @ 27 g a.i ha-1, Buprofezin 25 SC @ 250 g a.i ha-1; Glamore (Imidacloprid 40+Ethiprole 40% w/w) 80 WG @ 100 g a.i. ha-1, Thiacloprid 24 SC @ 60 g a.i ha-1, Azadirachtin 0.03 EC @ 8 g a.i ha-1, Dinotefuran 20 SG@ 40 g a.i ha-1 and untreated control. All the treated plots recorded significantly lower percent of dead heart, white ear- head caused by stem borer and silver shoot caused by gall midge. Module with Pymetrozine 50 WG @ 150 g a.i ha-1 treated plot recorded significantly higher per cent reduction of plant hoppers (>80% over untreated control) and produced higher grain yield (50.75 qha-1) than the other modules. Among the different treated modules the maximum number of spiders was found in Azadirachtin 0.03 EC @ 8 g a.i ha-1 treated module plot followed by other treatments.

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In silico prediction of conserved microRNAs and their targets from the Asian rice gall midge (Orseolia oryzae) expressed sequence tags

Gene Reports ◽

10.1016/j.genrep.2021.101032 ◽

2021 ◽

Vol 23 ◽

pp. 101032

Author(s):

Isha Atray ◽

J.S. Bentur ◽

Suresh Nair

Keyword(s):

Expressed Sequence Tags ◽

In Silico ◽

Gall Midge ◽

In Silico Prediction ◽

Orseolia Oryzae ◽

Asian Rice ◽

Rice Gall Midge ◽

Expressed Sequence

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First Report of a Gall Midge Species (Diptera: Cecidomyiidae) Associated With Pistachios

Journal of Integrated Pest Management ◽

10.1093/jipm/pmaa022 ◽

2020 ◽

Vol 11 (1) ◽

Author(s):

Farshid O Sirjani ◽

Edwin E Lewis

Keyword(s):

Gall Midge ◽

Species Level ◽

Plant Tissues ◽

First Report ◽

Branch Dieback ◽

First Time ◽

Level Identification

Abstract A new dipterous pest is reported, for the first time, on commercial pistachios from Sirjan, Kerman province, Iran. The genus of the insect was determined to be Resseliella Seitner (Diptera: Cecidomyiidae). Adults are light brown to brown in color and 0.8–1.5 mm in length with females, generally, slightly larger than males. Females have an elongated ovipositor, which is characteristic of the genus. Larvae are orange in color, 2–3 mm in length in the later instars, feed under bark without inducing galls, and cause branch dieback on trees of various ages. Brown to black discolorations are observed on plant tissues under bark where the larvae feed. Infestations observed on current and the previous—year’s growths, ranged from 0.5 to 1.2 cm in diameter, and all located in outer branches. Dry leaves and fruit clusters on infested branches remain attached, which may be used to recognize infestation by the gall midge. Dark-colored, sunken spots with splits on the bark located at the base of the wilted sections of the shoots also are symptoms of Resseliella sp. larval activity. Species-level identification of the gall midge is currently underway.

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Soybean Gall Midge Efficacy, 2020

Arthropod Management Tests ◽

10.1093/amt/tsab010 ◽

2021 ◽

Vol 46 (1) ◽

Author(s):

Erin W Hodgson ◽

Mitchell Helton

Keyword(s):

Gall Midge

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Effect of Temperature on the Development and Survival of Feltiella Acarisuga (Vallot) (Diptera: Cecidomyiidae) Preying on Tetranychus Urticae (Koch) (Acari: Tetranychidae)

Insects ◽

10.3390/insects12060508 ◽

2021 ◽

Vol 12 (6) ◽

pp. 508

Author(s):

Yong-Seok Choi ◽

Sung-Hoon Baek ◽

Min-Jung Kim

Keyword(s):

Developmental Stages ◽

Gall Midge ◽

Mass Rearing ◽

Immature Stage ◽

Development Rate ◽

Effect Of Temperature ◽

Thermal Constant ◽

Fundamental Information ◽

Threshold Temperatures ◽

Response To Temperature

The predatory gall midge, Feltiella acarisuga (Vallot) (Diptera: Cecidomyiidae), is an acarivorous species that mainly feeds on spider mites (Acarina: Tetranychidae). Because of its cosmopolitan distribution and predation efficacy, it is considered an important natural enemy available as a biological agent for augmentative biocontrol. However, despite its practical use, the thermal development and survival response to temperature have not yet been fully studied. In this study, we investigated the stage-specific development and survival of F. acarisuga at seven temperatures (11.5, 15.7, 19.8, 23.4, 27.7, 31.9, and 35.4 °C) to examine the effect of temperature on its lifecycle. All developmental stages could develop at 11.5–31.9 °C, but the performance was different according to the temperature. From the linear development rate models, the lower development threshold and thermal constant of the total immature stage were estimated at 8.2 °C and 200 DD, respectively. The potential optimal and upper threshold temperatures for the total immature stage were estimated as 29.3 and 35.1 °C using a non-linear development model. The operative thermal ranges for development and survival at 80% of the maximum rate were 24.5–32.3 and 14.7–28.7 °C, respectively. Thus, it was suggested that 24.5–28.7 °C was suitable for the total immature stage. In contrast, conditions around 8 °C and 35 °C should be avoided due to the lower development rate and high mortality. Our findings provide fundamental information for an effective mass-rearing and releasing program of F. acarisuga in an augmentative biocontrol program and help to predict phenology.

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