László Mezőfi

Hungarian Research Institute of Organic Agriculture | ÖMKi

This study reports the first records of two spider species for Hungary: Cyclosa sierrae Simon, 1870 (Araneidae) and Porrhomma oblitum (O. P.-Cambridge, 1871) (Linyphiidae). Cyclosa sierrae also represents the first record of this species from Central Europe. Furthermore, we provide evidence about the occurence of Dysdera lata Reuss, 1834 and Philod...

We studied the effects of kaolin particle film applications on major sour cherry (Prunus cerasus L.) pests and fruit quality and evaluated the ability of cinnamon essential oil (Cinnamomum verum J. Presl) to reduce infestations by cherry fruit fly, Rhagoletis cerasi (Linnaeus 1758) (Diptera: Tephritidae), in the field. Efficacy of kaolin particle f...

Circadian rhythms play an essential role in the adaptation of organisms to the environment and may show species-specific or sex-specific differences even within a closely related taxonomic group. Although spiders (Araneae) are sexually dimorphic in several morphological and behavioural features, there are very few studies on the sex-specific differ...

Spiders (Araneae) form abundant and diverse assemblages in agroecosystems such as fruit orchards, and thus might have an important role as natural enemies of orchard pests. Although spiders are polyphagous and opportunistic predators in general, limited information exists on their natural prey at both species and community levels. Thus, the aim of...

Selection forces often generate sex-specific differences in various traits closely related to fitness. While in adult spiders (Araneae), sexes often differ in colouration, body size, antipredator or foraging behaviour, such sex-related differences are less pronounced amongst immatures. However, sex-specific life-history strategies may also be adapt...

Urbanization can affect arthropod abundance in different ways. While species with narrow habitat range and low dispersal ability often respond negatively to urban environments, many habitat generalist species with good dispersal ability reach high densities in city centers. This filtering effect of urban habitats can strongly influence predator-pre...

Icius subinermis Simon, 1937 (Araneae: Salticidae), a jumping spider species of Mediterranean origin, is reported for the first time from Romania. Three specimens were collected from canopies of urban ornamental trees on the bank of the river Crișul Repede in Oradea in August 2021. Photographs of the copulatory organ and the habitus of voucher spec...

Spiders (Araneae) form abundant and diverse assemblages in agroecosystems such as fruit orchards, and thus have an important role as natural enemies of orchard pests. Although spiders are often considered to be polyphagous and opportunistic predators in general, limited information is available on their natural prey at both species and community le...

Összefoglalás. Kronobiológiai áttekintésünkben bevezetjük az olvasót a biológiai ritmusok kutatásának rejtelmeibe. Munkánkban először a tudományterület fontosabb szabályait és szakkifejezéseit (terminus technikus-ait) ismertetjük, majd az élőlények különböző napszakokhoz történő alkalmazkodásának ökológiai jelentőségét és változatait tárgyaljuk. Ez...

The North American citrus flatid planthopper, Metcalfa pruinosa (Say) (Hemiptera Flatidae), introduced in Europe in the late seventies, has become a major pest of a wide range of plant taxa in many countries throughout the continent. In Italy, the early recognition of this rapidly spreading species resulted in the introduction of Neodryinus typhloc...

Philodromus buchari Kubcová, 2004 is reported for the first time from Hungary. A relatively large and abundant population of Ph. buchari was found in Diósd (near Budapest), and after examining other materials, it seems that the species is widespread throughout the country. In the past Ph. buchari was misidentified as Ph. aureolus (Clerck, 1757), Ph...

A harlekinkatica (Harmonia axyridis) története sokak számára jól ismert. Az eredetileg Kelet-Ázsiában őshonos fajt a levéltetvek, pajzstetvek és levélbolhák elleni biológiai védekezés céljából hurcolták be számos helyre a világon. Bár nem a faj betelepítése volt a cél, az elsősorban Észak-Amerikában, illetve Európa egyes országaiban biopreparátumké...

We report the first record of Icius subinermis Simon, 1937, one female, from Budapest, Hungary. We provide photographs of the habitus and of the copulatory organ. The possible reasons for the new record and the current jumping spider fauna (Salticidae) of Hungary are discussed. So far 77 salticid species (including I. subinermis) are known from Hun...

In this paper, along with the widespread colour forms (forma succinea, f. spectabilis, f. conspicua) of the harlequin ladybird (Harmonia axyridis Pallas 1773), we first report another four forms (f. axyridis, f. equicolor, f. aulica, f. intermedia) in Hungary. Thus, all colour forms recorded so far in Europe can also be found in Hungary. This paper...

A pókok sok ember számára tipikus „nemszeretem” állatok. Bár sokszor bosszantó lehet jelenlétük, mégis, közelebbről szemügyre véve olyan ízeltlábúakat láthatunk, akik segítenek kártékony rovarok széles garmadáját kordában tartani. A szerzők munkájukban igyekeznek a pókok hasznosságára rávilágítani, a pókokat jobban megismertetni az olvasókkal, ille...

In July 2016, some individuals of the spider species Oecobius navus Blackwall 1859 were found on a building wall, under a balcony ledge in Palit, Rab island, Croatia. This species is reported for the Croatian fauna for the first time. Photos of the female habitus and copulative organs are provided. The full-text is available at: http://www.tandfon...

Spiders form the most abundant and species-rich predatory macro-arthropod group in many orchards. However, little is known about the pest control ability of spiders in apple orchards. The aim of our study was to determine the potential significance of canopy dwelling hunting spider species in apple orchards in Szabolcs-Szatmár-Bereg county (Hungary...

We studied the effects of kaolin particle film applications on apple (Malus domestica) pests, yield and fruit quality. The study was conducted in organic apple orchard plots of three apple cultivars (‘Prima’, ‘Rewena’ and, ‘Florina’) in Újfehértó, Hungary in 2010 and 2012. Efficacy of kaolin particle films (Surround WP, Engelhard Corporation; appli...