Journal of Entomological and Acarological Research

Chrysis fuscipennis or Chrysis angolensis? An answer with new synonymies, a new combination and species resurrected (Hymenoptera, Chrysididae)

Paolo Rosa — Mon, 11 Mar 2024 00:00:00 +0000

All species of the Chrysis angolensis group were synonymised with C. angolensis Radoszkovsky, 1881, excluding Chrysis diademata Mocsáry, 1889, endemic of the Philippines. However, after the study of type materials, four species are herein resurrected: Chrysis callaina Gribodo, 1884 stat. reviv., C. erratica Abeille de Perrin and du Buysson in du Buysson, 1887 stat. reviv., C. mossulensis Abeille de Perrin and du Buysson in du Buysson, 1887 stat. reviv., C. sulcifera Bischoff, 1910 stat. reviv. New synonymies are proposed for the following taxa: C. szalayana Mocsáry, 1912 n. syn. and C. ukerewensis Mocsáry, 1914, n. syn. of C. callaina Gribodo, 1884; Chrysis janthina Smith, 1874 n. syn. of C. brachyceras Bischoff, 1910. The new combination Praestochrysis brachyceras (Bischoff, 1910) n. comb. is proposed. Chrysis fuscipennis Brullé, 1846, the name in use for the oldest taxon described in the angolensis group, was replaced with Chrysis angolensis Radoszkovsky, 1881 because primary junior homonym of C. fuscipennis Dahlbom, 1829. However, Chrysis angolensis is here regarded as nomen dubium, C. fuscipennis Dahlbom, 1829 as nomen oblitum, because no longer in use as a valid name after 1899, and C. fuscipennis Brullé as nomen protectum, thus making the name C. fuscipennis Brullé, 1846 stat. reviv. available and restored.

Comparison of different trapping devices for the capture of Bactrocera oleae (Rossi) and other non-target insects in the Mediterranean basin

Fri, 05 Apr 2024 00:00:00 +0000

The present study aimed to compare some commercial traps baited with ammonium carbonate for their efficacy in monitoring Bactrocera oleae (Rossi) and their selectivity toward beneficial insects, under the conditions of olive groves located in five Mediterranean countries (Greece, Italy, Lebanon, Spain, Tunisia). The selectivity of the devices was evaluated toward several groups of non-target insects, namely lacewings (Chrysopidae), hoverflies (Syrphidae), ladybirds (Coccinellidae), bees (Apoidea) and hymenopteran parasitoids. The following devices were compared: yellow sticky panel, green sticky panel, Jackson trap with different combinations of yellow and white colours of the device and/or the panel, and McPhail trap. In most cases, the McPhail trap and the yellow panel showed the highest efficacy in monitoring male and female B. oleae flies; however, the yellow panel was most attractive for some groups of non-target insects, particularly the hymenopteran parasitoids, whereas the comparative non-target effects were sitespecific for the other arthropod groups. In the case of Chrysopidae, McPhail caught more individuals than the other traps in Italy and Spain, whereas in Lebanon and Greece, the highest number of individuals was captured in the two sticky panels. Coccinellidae were found in very low numbers only in Lebanon on yellow panels. Syrphidae were captured mainly on sticky panels in Greece and Tunisia. Apoidea were found only on yellow panels in Lebanon. The choice between the McPhail trap and the yellow panel should be made on the basis of various evaluations carried out at the site, including operational ones.

Exploring biocidal effects of methyl salicylate and limonene toward Trogoderma granarium Everts

Mokhtar Abdulsattar Arif, Salvatore Guarino — Mon, 29 Jan 2024 00:00:00 +0000

The khapra beetle, Trogoderma granarium, poses a significant threat as a post-harvest pest in stored products and stands out as a crucial quarantine concern globally. Unlike many other stored product pests, this species proved challenging to manage using conventional insecticides and alternative non-chemical methods. The exploration of plant-based natural products, particularly essential oils, as alternatives arises in response to challenges associated with the prolonged use of synthetic insecticides. While essential oils show promising activity, their use encounters challenges associated with standardization. This study investigates the feasibility of employing some single chemical compounds widespread in several essential oils with insecticidal activity as candidate insecticides, specifically limonene and methyl salicylate in contact/fumigation bioassays toward T. granarium adults. The results showed that methyl salicylate caused a lethal time of 50% (LT50) at the dose of 1 mg after 7.40 hours of exposure. The LT50 calculated for limonene was 86.83 hours while positive control using deltamethrin, used at the recommended dose of the manufacturer, was 5.20 hours after exposure. These data suggest that methyl salicylate can be exploited as a candidate for further tests in field conditions toward T. granarium also in consideration of its relative low toxicity for humans.

First report of Coccinellid beetles (Coleoptera: Coccinellidae) from Gharana Wetland Conservation Reserve and connected agricultural fields in Jammu

Anosh Ali, Mohd Yousuf, Akhtar Ali Khan — Mon, 29 Jan 2024 00:00:00 +0000

The present study reveals that Predatory ladybird beetles are being utilized for the application of biological control in many agricultural and horticultural fields globally. A comprehensive survey was carried out for the collection of ladybird beetles by different methods like handpicking, sweeping net, and beat tray method in the month of May and June 2023 in Gharana wetland conservation reserve and connected agricultural fields along the international border in the outskirts of Jammu. A total number of 12 species were collected. The collected specimens were identified up to the species level as Coccinella septumpunctata (Linnaeus), Hippodamia variegata (Goeze), Propylea dissecta (Mulsant), Henosepilachna vigintioctopunctata (Fabricius), Menochilus sexmaculatus (Fabricius), Brumoides suturalis (Fabricius), Oenopia sauzeti (Mulsant), Anegleis cardoni (Weise), Oenopia conglobata (Mulsant), Micraspis allardi (Mulsant), Platynaspidius saundersi (crotch), Harmonia eucharis (Mulsant). This study also shows the dominance of the two species i.e., Coccinella septumpunctata and Oenopia sauzeti occurring along the agricultural fields in the vicinity of this wetland.