scholarly journals The monocotyledon-feeding lace bugs of the genus Agramma from Japan (Hemiptera: Heteroptera: Tingidae)

2020 ◽  
pp. 527-536
Author(s):  
Jun Souma
Keyword(s):  
Host Plant ◽  
Lace Bug ◽  
Lace Bugs

In this paper, I revise the taxonomy of the lace bug genus Agramma Stephens, 1829 (Hemiptera: Heteroptera: Tingidae: Tinginae) from Japan. Two species are recognized and re-described: A. japonicum (Drake, 1948) described previously from Japan, and A. abruptifrons Golub, 1990, newly recorded from Japan. The previous records of A. nexile (Drake, 1948) from Japan are confirmed as misidentifications of A. japonicum. The host plant relationship is discussed for A. abruptifrons and A. japonicum. Photographs of living individuals for A. abruptifrons and A. japonicum are presented. A key is provided to facilitate the identification of the two species of Agramma distributed in Japan.

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.

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 Azalea Lace Bug, Stephanitis pyrioides (Scott) (Insecta: Hemiptera: Tingidae)

EDIS ◽  
2006 ◽  
Vol 2006 (20) ◽  
Author(s):  
Jamba Gyeltshen ◽  
Amanda Hodges
Keyword(s):  
Life History ◽  
Host Plant ◽  
Fact Sheet ◽  
Plant Damage ◽  
Lace Bug ◽  
Ornamental Trees ◽  
Trees And Shrubs

EENY-373, a 5-page illustrated fact sheet by Jamba Gyeltshen and Amanda Hodges, describes this pest of ornamental trees and shrubs. Part of the Featured Creatures series, this publication covers the distribution, description, life history, host plant, damage, management, and selected references. Published by the UF Department of Entomology and Nematology, May 2006. EENY-373/IN677: Azalea Lace Bug, Stephanitis pyrioides (Scott) (Insecta: Hemiptera: Tingidae) (ufl.edu)

Discoveries of the genera Baeochila and Idiocysta from Japan, with descriptions of two new species (Hemiptera: Heteroptera: Tingidae)

Zootaxa ◽  
2020 ◽  
Vol 4731 (3) ◽  
pp. 388-402 ◽  
Author(s):  
JUN SOUMA
Keyword(s):  
New Species ◽  
Host Plant ◽  
Ryukyu Islands ◽  
Lace Bug ◽  
Distribution Ranges ◽  
The Ryukyu Islands ◽  
Two New Species ◽  
First Time ◽  
Hedera Rhombea ◽  
Host Plant Relationships

Two lace bug genera, Baeochila Drake & Poor, 1937 and Idiocysta China, 1930 (Hemiptera: Heteroptera: Tingidae) are recorded from Japan for the first time, and two new species, B. horvathi sp. nov. and I. takarai sp. nov., are described. The former was collected from the vines of Hedera rhombea (Miq.) Bean (Araliaceae) and the bark of Trachycarpus fortunei (Hook.) H.Wendl. (Arecaceae) in suburbanized areas of Honshu, Shikoku and Kyushu, and the latter was collected from the leaves of Freycinetia formosana Hemsl. (Pandanaceae) in the laurilignosa ecosystem of the Ryukyu Islands. The distribution ranges and host plant relationships of the two new species are discussed. Keys to all species of the two genera and photographs of living individuals for the new species are also presented. 

scholarly journals Residual Toxicity of Imidacloprid to Hawthorn Lace Bug, Corythuca cydoniae, Feeding on Cotoneasters in Landscapes and Containers

2007 ◽  
Vol 25 (1) ◽  
pp. 43-46 ◽  
Author(s):  
Adrianna Szczepaniec ◽  
Michael J. Raupp
Keyword(s):  
Insect Pests ◽  
Growing Season ◽  
Single Application ◽  
Lace Bug ◽  
Residual Toxicity ◽  
Landscape Plants ◽  
Material Costs ◽  
Wide Range ◽  
Lace Bugs ◽  
Important Pest

Abstract Cotoneasters are important and valuable landscape plants. They are severely attacked by hawthorn lace bug (Corythuca cydoniae) in landscapes and nurseries. Imidacloprid has a wide range of activity against many kinds of insect pests. We were interested in determining if cotoneasters treated with soil applications of imidacloprid in landscapes and containers remained toxic to hawthorn lace bugs for more than one growing season. Cotoneasters planted in landscapes were less damaged by lace bugs in the year that imidacloprid was applied and in the following year. We suspect that residual toxicity of leaves of cotoneasters particularly to the nymphs of lace bugs as the cause. Cotoneasters grown in containers demonstrated toxicity to lace bugs for almost 800 days after the application of imidacloprid to the soil. These data greatly extend the known period of efficacy for imidacloprid in controlling hawthorn lace bug on cotoneasters. Clearly, lace bugs are controlled for a minimum of two years. By reducing the need for repetitive applications, a single application of imidacloprid can reduce time, labor and material costs associated with managing this important pest of cotoneasters.

scholarly journals Field Evaluation of Azalea Species and Cultivars for Resistance to Azalea Lace Bug and Cranberry Rootworm

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 482B-482 ◽  
Author(s):  
Carol D. Robacker ◽  
S.K. Braman
Keyword(s):  
Block Design ◽  
Field Evaluation ◽  
Deciduous Trees ◽  
Field Plot ◽  
Delaware Valley ◽  
Woody Ornamentals ◽  
Lace Bug ◽  
Randomized Complete Block Design ◽  
Lace Bugs ◽  
Evergreen Azalea

Azalea lace bug (Stephanitis pyrioides) is the most serious pest on azalea. Both evergreen and deciduous azaleas are susceptible, though more resistance has been observed in the deciduous. To identify genes for resistance, fourteen deciduous azalea species, three deciduous azalea cultivars derived from complex hybrids, and one evergreen cultivar were planted in a randomized complete-block design under mixed deciduous trees in the fall of 1994. Each block was replicated 12 times. In the spring and summer of 1995, azalea lace bugs were introduced onto branches of six plants of each of the taxa. One month later, and again in the fall of 1996, the percentage of infected shoots per plant was measured. Very little damage from azalea lace bug was observed on the R. canescens, R. periclymenoides, and R. prunifolium plants, while `Buttercup', `My Mary', R. japonicum, and R. oblongifolium had the greatest damage. The cranberry rootworm, Rhadopterus picipes, damages many woody ornamentals, including some azalea species. The injury appears as elongated cuts on the leaves, and is most severe on plants growing under dense canopies. The cranberry rootworm has been observed in this azalea field plot. Plants were evaluated for damage in June 1995 and 1996. Cranberry rootworm damage was most severe on `Buttercup', R. japonicum, R. prinophyllum, and R. calendulaceum, while the evergreen azalea `Delaware Valley White' was the most resistant.

scholarly journals 044 Screening for Resistance to Azalea Lace Bug among Deciduous Azalea Progeny from a Cross between a Highly Susceptible to a Highly Resistant Genotype

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 396A-396
Author(s):  
Carol D. Robacker ◽  
S.K. Braman
Keyword(s):  
Leaf Surface ◽  
Lower Leaf Surface ◽  
Laboratory Bioassay ◽  
Hair Density ◽  
Resistant Genotype ◽  
Lace Bug ◽  
Lace Bugs ◽  
Major Pest ◽  
High Degree ◽  
Laboratory Bioassays

Azalea lace bug, Stephanitis pyrioides (Scott), is a major pest on azalea. Adults and nymphs feed and oviposit on the underside of the leaves, causing a stippled appearance when viewed from above. Previous field and laboratory screenings of 17 taxa of deciduous azalea, including representatives of 11 species, have identified a range of resistance to lace bug. One of the most resistant plants observed was of the species R. canescens. The interveinal region on the underside of the leaves of this plant is highly pubescent. This plant was crossed to a susceptible plant of R. viscosum (formerly R. serrulatum), which was glabrous on the lower leaf surface. The resulting seeds were planted in 1996, and the seedlings were transplanted to the field in 1998. In Sept. 1999, a laboratory bioassay was conducted to determine the resistance levels of these progeny. Five cuttings, each with two leaves, were collected from each plant, including the parental genotypes. Two female lace bugs were transferred onto the leaves of each cutting and the leaves were enclosed in a plastic cup with mesh for ventilation. After 5 days, the number of live bugs and number of eggs per cutting were counted. The percent damage from feeding was estimated. To determine whether pubescence was correlated with lace bug resistance, two terminal leaves were collected from each plant, and interveinal leaf hair density was calculated. Results from the laboratory bioassays revealed a high degree of susceptiblity to lace bug among these seedlings. Most of the progeny were pubescent, indicating no relationship between leaf hair density and resistance.

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