Zur Kenntnis der Kleinen Kiefern‐Buschhornblattwespe, <i>Diprion (Microdiprion) pallipes</i> (Fall.) (Hym., Diprionidae)

Mallach, Norbert

doi:10.1111/j.1439-0418.1973.tb01823.x

Cited by 8 publications

(4 citation statements)

References 3 publications

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“…The egg stage lasts about 8 to 14 days. The egg-clusters arc simi!ar to those of N. sertifer, with an average of about 50 to 77 eggs per cluster and 2 to 4 per needle (MALLACH 1973). In contrast to D. pini, G. pallida and G. socia the eggs are laid at intervals of between 1.5-2mm into the needles and are thus not touching each other.…”

Section: Microdiprion Pallipes Fallcnmentioning

confidence: 88%

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Studies on the biology and ecology of the egg‐parasites (Hym.: Chalcidoidea) of the pine sawfly Diprion pini (L.) (Hym.: Diprionidae) in Central Europe

Eichhorn

Pschorn-Walcher

1976

Zeitschrift für Angewandte Entomologie

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As a supplement to our earlier paper on the egg parasites of Neodiprion sertifer (Pschorn‐Walcher and Eichhorn 1973), the biology and ecology of the same four species of egg parasites in association with the common pine sawfly Diprion pini (and some of its relatives) is described. The dominant egg parasite is Achrysocharella ruforum, whereas A. ovulorum, Dipriocampe diprioni and the hyperparasite Tetrastichus oophagus are relatively rare. The phenology, voltinism, and synchronization with the host through the intervention of a photoperiodically controlled, eonymphal diapause and the adoption of a facultatively hyper‐ or auto‐parasitic behaviour in Achrysocharella spp. are discussed. The oviposition pattern of A. ruforum and D. diprioni in egg clusters of D. pini is shown to be more or less random, in contrast to the aggregated pattern found in the other gregarious species of pine sawflies, and it is suggested that this difference is due to the partial protection of D. pini eggs provided by the froth‐like substance covering them. The effect of the egg parasites on low, endemic populations of D. pini is thought to be rather limited, average egg parasitism being usually around 15%, but ‐ as literature records indicate ‐ the efficacy, especially of A. ruforum, might be greater at higher host densities. Zusammenfassung Studien zur Biologie und Ökologie der Eiparasiten der gemeinen Kiefernbuschhornblattwespe, Diprion pini (L.), in Mitteleuropa In Ergänzung zu Untersuchungen über die Eiparasiten der rotgelben Kiefern‐Buschhornblattwespe, Neodiprion sertifer Geoff. (Pschorn‐Walcher und Eichhorn 1971, 1973), wurden in den Jahren 1968–1975 Untersuchungen über die Eiparasiten der gesellig lebenden Kiefern‐Buschhornblattwespen Diprion pini L., Gilpinia socia Klug, G. pallida Klug und Microdiprion pallipes Fallén durchgeführt.Das Material wurde in 9 Regionen (24 Lokalitäten) in 6 europäischen Ländern gesammelt. Es wurden die gleichen 4 Erzwespenarten als Eiparasiten der Gattungen Diprion, Gilpinia und Microdiprion festgestellt wie bei N. sertifer, nämlich Dipriocampe diprioni Ferr., Achrysocharella ruforum Krausse, Achrysocharella ovulorum Ratz, und Tetrastichus oophagus Otten. Von insgesamt 3869 Eiparasiten, die aus Eiern von D. pini gezogen wurden, waren 82,0% A. ruforum, 7,9% A. ovulorum, 6,9% D. diprioni und 3,2% T. oophagus. A. ruforum ist daher der einzige Eiparasit, der als biologischer Begrenzungsfaktor Bedeutung hat. Was die Konstanz der Eiparasiten betrifft wurde folgendes festgestellt: In 61 Proben, die 1968–1971 in 24 Lokalitäten gesammelt wurden, kam A. ruforum in 91,8% vor, A. ovulorum in 64,0% D. diprioni in 42,6% und T. oophagus in 22,4%. A. ruforum tritt vorwiegend primär, gelegentlich auch als Sekundärparasit auf. Die Art überwintert in Eiern von D. pini, G. socia und G. pallida als erwachsene Larve (Eonymphe), selten als Puppe. Die Adulten der überwinternden Generation schlüpfen in Delémont (500 m über NN) von der zweiten Aprilhälfte an bis Ende Juli mit zwei ausgeprägten Schwerpunkten (1973: Anf...

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Section: Microdiprion Pallipes Fallcnmentioning

confidence: 88%

“…This species has usually two generations in central Europe (PSCHORN-WALCHER 1962;MALLACH 1973), but only one at higher altitudes and in Scandinavia (FORSSLUND 1960).…”

Section: Microdiprion Pallipes Fallcnmentioning

confidence: 99%

Studies on the biology and ecology of the egg‐parasites (Hym.: Chalcidoidea) of the pine sawfly Diprion pini (L.) (Hym.: Diprionidae) in Central Europe

Eichhorn

Pschorn-Walcher

1976

Zeitschrift für Angewandte Entomologie

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“…The second species (solitary feeder) and the third species (gregarious feeder) are quite common, and their larval period is in July-August. Both species overwinter at the cocoon-stage (Mallach, 1974;Kurir, 1975;Schwenke, 1982;Viitasaari & Varama, 1987). All species are univoltine in Finland.…”

Section: Insect and Plant Materialsmentioning

confidence: 96%

The influence of damage level in Pinus sylvestris foliage on the performance of diprionid sawflies

Lyytikäinen

1992

Scandinavian Journal of Forest Research

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The influence of damage level in Pinus sylvestris foliage on the performance of diprionid sawflies. Accepted Oct. 2, 1991. Scand. J. For. Res. 7: 249-257, 1992 I tested the presence of rapid and delayed induced resistance in Pinus sylvestris L. by biotests, rearing three species of diprionid sawflies on defoliated and undefoliated trees. I damaged the pines artificially by cutting mature needles with scissors at the beginning of the growing season. Four levels of defoliation were created on the basis of levels of removed needle biomass. Sawfly larval and cocoon weights were retarded and relative growth rates delayed as a result of an increase in damage level. The larval periods were prolonged at most 2-6 days. The response to the damage was partly species-specific. The needle water content decreased in the following growing season in connection with low and moderate damage and increased at high damage levels. The nutrient contents of the foliage in the damaged and undamaged trees did not differ significantly. The Scots pine showed damage-induced changes in food quality after extensive defoliation, which affected, via plant, species using the same host.

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“…Females of both Neodiprion sertifer (Geoffroy) and other diprionids have been reported to exhibit very limited dispersal activity, especially after mating (Bobb, 1972; Mallach, 1974; Kolomiets et al ., 1979; Rauf & Benjamin, 1980; Wagner et al ., 1986). However, more recent experiments have revealed that significant dispersal among N. sertifer females is not uncommon, although the distances travelled remain to be determined (Östrand et al ., 1999).…”

Section: Introductionmentioning

confidence: 99%

Mating disruption of the pine sawfly Neodiprion sertifer (Hymenoptera: Diprionidae) in isolated pine stands

Martini

Baldassari

Baronio

et al. 2002

Agri and Forest Entomology

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1 Previous applications of the mating disruption technique to Neodiprion sertifer resulted in decreased numbers of males caught in the treated area but no effect on sex ratio or overall population density. 2 The present study assessed the efficacy of mating disruption against N. sertifer outbreaks in pine stands surrounded by agricultural areas or pasture, and therefore isolated from other infested areas. 3 Pine stands were treated by placing dispensers with an erythro-mixture of the acetate ester of 3,7-dimethyl-2-pentadecanol every 10 m in a grid. 4 The efficacy of this technique was evaluated by comparing the number of males caught in sticky traps baited with synthetic pheromone, and by comparing the sex ratio and the population density of the sawfly in the subsequent generation between treated and control pine stands. 5 The number of males caught within treated areas was significantly lower than in the control area. 6 In the treated pine stands 46% of the egg clusters resulted in male cocoons only, compared to 3% of the clusters in the control stand. 7 A significant reduction of the sawfly population was observed in the treated pine stands. The results contrast to the earlier mating disruption attempts with N. sertifer and can probably be ascribed to the isolation of the experimental stands.

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Zur Kenntnis der Kleinen Kiefern‐Buschhornblattwespe, Diprion (Microdiprion) pallipes (Fall.) (Hym., Diprionidae)

Cited by 8 publications

References 3 publications

Studies on the biology and ecology of the egg‐parasites (Hym.: Chalcidoidea) of the pine sawfly Diprion pini (L.) (Hym.: Diprionidae) in Central Europe

Studies on the biology and ecology of the egg‐parasites (Hym.: Chalcidoidea) of the pine sawfly Diprion pini (L.) (Hym.: Diprionidae) in Central Europe

The influence of damage level in Pinus sylvestris foliage on the performance of diprionid sawflies

Mating disruption of the pine sawfly Neodiprion sertifer (Hymenoptera: Diprionidae) in isolated pine stands

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