Results 41 to 50 of about 1,661 (199)

Sawflies from northern Ecuador and a checklist for the country (Hymenoptera: Argidae, Orussidae, Pergidae, Tenthredinidae, Xiphydriidae)

open access: yesJournal of Hymenoptera Research, 2018
An illustrated list of species of sawflies collected in northern Ecuador, mainly during the end of 2016, is given. Manaos mulsus (Konow, 1906), Ptenos delta (Malaise, 1957), Scobina styx Malaise, 1949 (Argidae), Stromboceros suppar Konow, 1903 and ...
Jean-Luc Boevé   +2 more
doaj   +3 more sources

The First Fossil Representatives of the Sawfly Genera Emphytus and Empria from the upper Miocene of France (Hymenoptera, Tenthredinidae)

open access: yesInsects, 2022
Emphytusmiocenicus sp. nov., first fossil representative of this genus, is described from the upper Miocene of the diatom paleolake of Montagne d’Andance (Ardèche, France). Its placement is ensured by an in-depth comparison with all the extant and fossil
André Nel   +4 more
doaj   +1 more source

Insects and Survival: A Review of Primary and Secondary Defense Strategies

open access: yesEntomologia Experimentalis et Applicata, Volume 174, Issue 7, Page 601-624, July 2026.
Based on a review of three decades of literature, insect defense mechanisms are classified into primary (I) and secondary (II) mechanisms of behavioral, morphological, and chemical nature. These mechanisms have been recorded in 22 (I) and 20 (II) orders, respectively.
Lucas Fernandes Silva   +3 more
wiley   +1 more source

New records of sawflies (Hymenoptera, Symphyta) feeding on leaves of birch (Betula sp.) in Slovakia [PDF]

open access: yesCheck List
New data on the distribution of 11 Symphyta species phyllophagous on birch trees (Betula L.) are presented. Dineura virididorsata (Retzius, 1783), Heterarthrus nemoratus (Fallén, 1808), Nematinus caledonicus (Cameron, 1882), Pamphilius varius (
Šimon Marko   +3 more
doaj   +3 more sources

Korean species of the sawfly genus Hemibeleses (Hymenoptera: Tenthredinidae), with descriptions of two new species

open access: yesJournal of Asia-Pacific Biodiversity, 2021
The genus Hemibeleses Takeuchi is examined to include the following five species from Korea: H. athaliodes Takeuchi, H. fulva Park & Lee, sp. nov., H. nigriceps Takeuchi, H. shinoharai Park & Lee, sp. nov., and H. ventralis Takeuchi.
Bia Park, Jong-Wook Lee
doaj   +1 more source

Die Pflanzenwespen-Fauna der Hundsheimer Berge in Niederösterreich (Hymenoptera: Symphyta)

open access: yes, 2016
Schedl, Wolfgang (2016): Die Pflanzenwespen-Fauna der Hundsheimer Berge in Niederösterreich (Hymenoptera: Symphyta).
Schedl, Wolfgang
core   +1 more source

On Bulgarian sawflies, including a new species of Empria (Hymenoptera, Symphyta) [PDF]

open access: yesDeutsche Entomologische Zeitschrift, 2019
Thirty-nine species of sawfly (Symphyta) are recorded for the first time in Bulgaria. Most of these were collected during early spring of 2018, in the south-east of the country (Burgas and Varna Provinces). Empria aridicola Macek & Prous, sp. nov.
Andrew Liston, Marko Prous, Jan Macek
doaj   +3 more sources

Die Pflanzenwespen von Syrien (Hymenoptera: Symphyta) - ein Überblick

open access: yes, 2009
Schedl, W. (2009): Die Pflanzenwespen von Syrien (Hymenoptera: Symphyta) - ein Überblick.
Schedl, W.
core   +1 more source

Group Size Dependent Selection for Cooperation Versus Freeloading in Collective Chemical Defence

open access: yesEcology Letters, Volume 29, Issue 4, April 2026.
Theory predicts that cooperation in public goods should be favoured in smaller groups because individuals gain a larger share of the benefits, but empirical evidence remains scarce outside microbial systems. Using collectively defending larvae of the pine sawfly Neodiprion sertifer, we show that survival benefits of cooperation are stronger in small ...
Sophie Van Meyel   +3 more
wiley   +1 more source

Blasticotomidæ in the Miocene of Florissant, Colorado (Hymenoptera Symphyta) [PDF]

open access: yesPsyche: A Journal of Entomology, 1942
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Robert B. Benson
doaj   +2 more sources

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