scholarly journals Evaluation of Green Lacewings for Suppressing Azalea Lace Bug Populations in Nurseries

2000 ◽  
Vol 18 (4) ◽  
pp. 207-211 ◽  
Author(s):  
Paula M. Shrewsbury ◽  
Deborah C. Smith-Fiola
Keyword(s):  
Release Rate ◽  
Chrysoperla Carnea ◽  
Green Lacewing ◽  
Alternative Control ◽  
Lace Bug ◽  
Greenhouse Study ◽  
Green Lacewings ◽  
Lace Bugs ◽  
Percent Mortality ◽  
Augmentative Release

Abstract Greenhouse and nursery studies were conducted to determine an optimal release rate and efficacy of green lacewing (glw) larvae, Chrysoperla carnea (Stephens), for suppression of azalea lace bug (alb), Stephanitis pyrioides (Scott). In a greenhouse study, different densities of lace bugs (40 or 80 per plant) did not influence the percent mortality caused by green lacewings. However, greater numbers of green lacewing larvae released resulted in higher lace bug mortality (5 and 20 glw per plant resulted in an average lace bug mortality of 79% and 97%, respectively). Lacewing larvae released in a production nursery, at rates of 5/plant and 10/plant, and acephate (Orthene) significantly reduced lace bug populations, with green lacewings at 10/plant and acephate reducing lace bug densities more than green lacewings at 5/plant. In a second nursery trial, lacewing larvae released into production blocks of azaleas resulted in a 97% reduction in lace bugs. These studies suggest that augmentative release of green lacewing larvae may provide an alternative control tactic that can be integrated into lace bug pest management programs.

scholarly journals Green Lacewings and Water Sprays for Azalea Lace Bug Control1

2018 ◽  
Vol 36 (4) ◽  
pp. 119-125
Author(s):  
Jana C. Lee ◽  
Barry Finley ◽  
S. Michael Flores ◽  
Katerina Velasco Graham ◽  
J. Megan Woltz ◽  
...  
Keyword(s):  
Biological Control ◽  
Field Trials ◽  
Green Lacewing ◽  
Chrysoperla Rufilabris ◽  
Lace Bug ◽  
Landscape Plants ◽  
Water Sprays ◽  
Lace Bugs ◽  
Sequential Combination ◽  
Application Methods

Abstract The azalea lace bug, Stephanitis pyrioides, is a serious pest of azaleas and rhododendrons which is often controlled by systemic insecticides. However, the efficacy of softer approaches such as biological control and water sprays against this pest on rhododendrons is unknown. Therefore, we tested the commercially available green lacewing predator, Chrysoperla rufilabris, and water sprays on lace bug infestation in one laboratory and four field trials. First, 2nd instar predator larvae were confirmed to consume lace bug nymphs and sometimes adults. Second, tapping predator larvae from hexcel units over dry leaves of potted rhododendrons and shaking loose eggs over wet leaves were reliable application methods. Third, predator larvae released onto potted rhododendrons lowered lace bug counts for two weeks. Fourth, after four bi-weekly applications, plants receiving egg cards or water-sprays had reduced lace bug counts and fewer damaged leaves than control plants. Fifth, landscape plants receiving the sequential combination of water spray followed by predator egg releases had 44 to 90% lower lace bug abundance and fewer damaged leaves than the control. After lace bugs were initially dislodged, hatching predators might have consumed hatching lace bugs. Index words: biological control, Chrysoperla rufilabris (Burmeister), mechanical control, rhododendron, Stephanitis pyrioides (Scott) Species used in this study: Azalea lace bug (Stephanitis pyrioides Scott), green lacewing (Chrysoperla rufilabris Burmeister), Rhododendron (Rhododendron spp.)

scholarly journals Feeding Efficiency of Green Lacewing, Chrysoperla carnea (Stephens) against Different Species of Aphid in Laboratory Conditions

2017 ◽  
Vol 5 (1) ◽  
pp. 37-41 ◽  
Author(s):  
Lok Bahadur Rana ◽  
Ram Prasad Mainali ◽  
Homan Regmi ◽  
Binayak Prasad RajBhandari
Keyword(s):  
Aphid Species ◽  
Corcyra Cephalonica ◽  
Chrysoperla Carnea ◽  
Green Lacewing ◽  
Predatory Efficiency ◽  
Polyphagous Predator ◽  
Green Lacewings ◽  
Feeding Efficiency ◽  
Rice Moth ◽  
Predatory Larva

Green lacewing, Chrysoperla carnea Stephens (Neuroptera: Chrysopidae) is the most effective polyphagous predator of different species of aphids and is commonly known as “aphid lion” . The experiment on feeding efficiency of green lacewing was studied in the laboratory of Entomology Division, NARC, Khumaltar, Lalitpur, Nepal from 21st , December 2015 to 26th, March 2016. The known number of predatory larva of green lacewings were fed with known number of seven different species of live aphid and frozen Corcyra eggs representing each treatment. The treatments were replicated four times. The predatory efficiency was calculated by counting the number of consumed host per day. The result revealed that the predatory efficiency of C. carnea larvae were increased from first to third instar and third instar were more voracious as compare to first two instars. It consumed significantly the highest rice moth, Corcyra cephalonica followed by Aphis craccivora and others aphid species, respectively. From this experiment, it is evident that the green lacewing is potent bio-agent against different aphid species and hence further research is required simultaneously in the farmer’s field conditions.Int. J. Appl. Sci. Biotechnol. Vol 5(1): 37-41

Evaluation of Selected Cotoneaster spp. for Resistance to Hawthorn Lace Bug

1985 ◽  
Vol 3 (4) ◽  
pp. 156-157
Author(s):  
Peter B. Schultz
Keyword(s):  
The Other ◽  
Lace Bug ◽  
Lace Bugs ◽  
Preference Study ◽  
Dense Pubescence

Four Cotoneaster species were evaluated for resistance to hawthorn lace bug. In a preference study using adults, the lace bugs preferred C. x watereri Exell. ‘Brandekeir’ when compared to the other 3 species, C. lacteus W.W.Sm., C. nitens Rehd. & E.H. Wils. and C. acutifolius Turcz. Significantly fewer nymphs completed development on foliage of C. lacteus than on C. x watereri ‘Brandekeir,’ C. nitens and C. acutifolius. The presence of dense pubescence is suggested as a factor in this reduced development.

In Vitro Screening of Azalea for Resistance to Azalea Lace Bug

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 506b-506
Author(s):  
Carol D. Robacker ◽  
S.K. Braman
Keyword(s):  
Leaf Damage ◽  
In Vitro Screening ◽  
Screening Assay ◽  
Delaware Valley ◽  
In Vitro Techniques ◽  
Culture Tube ◽  
Lace Bug ◽  
Lace Bugs ◽  
Laboratory Bioassays

Azalea lace bug (Stephanitis pyrioides) is the most serious pest on azalea. Results of laboratory bioassays and field evaluations of 17 deciduous azalea taxa have identified three resistant taxa: R. canescens, R. periclymenoides, and R. prunifolium. Highly susceptible taxa are `Buttercup', `My Mary', R. oblongifolium, and the evergreen cultivar `Delaware Valley White'. To determine whether in vitro techniques would have potential value in screening or selecting for resistance, or for the identification of morphological or chemical factors related to resistance, an in-vitro screening assay was developed. In-vitro shoot proliferation was obtained using the medium and procedures of Economou and Read (1984). Shoots used in the bioassays were grown in culture tubes. Two assays were developed: one for nymphs and one for adult lace bugs. To assay for resistance to nymphs, `Delaware Valley White' leaves containing lace bug eggs were disinfested with 70% alcohol and 20% commercial bleach, and incubated in sterile petri plates with moistened filter paper until the nymphs hatched. Five nymphs were placed in each culture tube, and cultures were incubated for about 2 weeks, or until adults were observed. To assay for resistance to adults, five female lace bugs were placed in each culture tube and allowed to feed for 5 days. Data collected on survival and leaf damage was generally supportive of laboratory bioassays and field results. Adult lace bugs had a low rate of survival on resistant taxa. Survival of nymphs was somewhat reduced on resistant taxa.

Effects of ten naturally occurring sugars on the reproductive success of the green lacewing, Chrysoperla carnea

BioControl ◽  
2015 ◽  
Vol 61 (1) ◽  
pp. 57-67 ◽  
Author(s):  
Darinka Gonzalez ◽  
Anabela Nave ◽  
Fátima Gonçalves ◽  
Fernando M. Nunes ◽  
Mercedes Campos ◽  
...  
Keyword(s):  
Reproductive Success ◽  
Chrysoperla Carnea ◽  
Green Lacewing ◽  
Naturally Occurring

Review of the green lacewing genus Apochrysa Schneider (Neuroptera: Chrysopidae)

Zootaxa ◽  
2020 ◽  
Vol 4729 (3) ◽  
pp. 329-346
Author(s):  
SHAUN L. WINTERTON ◽  
ANKITA GUPTA
Keyword(s):  
Key To Species ◽  
Green Lacewing ◽  
Green Lacewings

Delicate green lacewings in the genus Apochrysa Schneider (Neuroptera: Chrysopidae: Apochrysinae) are reviewed with each species diagnosed and figured; a key to species is included. 

Two new larval species of the genus Erythraeus (Erythraeus) (Acari: Erythraeidae) from Iran

Zootaxa ◽  
2012 ◽  
Vol 3479 (1) ◽  
pp. 52 ◽  
Author(s):  
MOHAMMAD KHANJANI ◽  
ALI-NAGHI MIRMOAYEDI ◽  
BAHMAN ASALI FAYAZ ◽  
TAHEREH SHARIFIAN
Keyword(s):  
New Species ◽  
Green Lacewing ◽  
Western Iran ◽  
Lace Bug ◽  
Two New Species ◽  
Larval Species

Two new species of the subgenus Erythraeus are described from western Iran: Erythraeus (Erythraeus) populi sp. nov.from pear lace bug, Stephanitis pyri F. (Heteroptera: Tingidae), and E. (E.) chrysoperlae sp. nov. from a green lacewing,Chrysoperla kolthoffi (Navas) (Neuroptera: Chrysopidae). A key to the Iranian larval species of the subgenus Erythraeus (Erythraeus) is given, as is data on leg setae and measurements for all 44 species of the subgenus.

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