Parasitoids of jumping plant-lice (Psylloidea, Hemiptera) from the family Encyrtidae (Hymenoptera, Chalcidoidea) in Serbia

Abstract

The aim of this research was to study the diversity of jumping plant-lice parasitoids and to investigate their potential in biological control applicable to cultivated and ornamental plants. Thirteen species from six genera of encyrtid wasps (Hymenoptera, Chalcidoidea, Encyrtidae) were reared from 24 species of jumping plant-lice (Hemiptera, Psylloidea) in Serbia. A total of 689 encyrtid wasps were collected since 2003 from 51 localities, reared from hosts. The richest genera are Psyllaephagus with four species (P. belanensis (Hoffer), P. fulvipes Erdös, P. procerus Mercet and Psyllaephagus sp.) and Syrphophagus with three species (S. aphidivorus (Mayr), S. taeniatus (Förster) and S. ariantes (Walker)). The most common species, comprising about half of the reared specimens, is Prionomitus mitratus (Dalman). Eight species are new to Serbia: Microterys annulatus (Erdös, 1957), Prionomitus tiliaris (Dalman), Psyllaephagus belanensis, P. fulvipes, P. procerus, Sectiliclava cleone (Walker), Syrphophagus ariantes and Trechnites flavipes (Mercet). Psyllaephagus fulvipes was reared from the nymphs of Craspedolepta conspersa (Löw), the only known host of this species so far. In the present study, 27 new host associations were found.

Wolbachia infection dynamics in a natural population of the pear psyllid Cacopsylla pyri (Hemiptera: Psylloidea) across its seasonal generations

“…are relatively frequent parasitoids or hyperparasitoids of various psyllids, including Cacopsylla spp. on pear trees 101 . This Wolbachia strain clustered within supergroup A and was closely related to Wolbachia strains from other hymenopteran parasitoid wasps.…”

Diversity, biology, and management of the pear psyllids: a global look

“…Lists of parasitoids emerging from pear psyllids are available for both Old World and New World regions (Jensen 1957, McMullen 1966, 1971, Rieux et al 1990, Cross et al 1999, Jerinić-Prodanović et al 2019). Three species of Encyrtidae (Hymenoptera) are most important: Trechnites insidiosus (Crawford), Prionomitus mitratus (Dalman), and Prionomitus tiliaris (Dalman) (Fig.…”

“…13). Pear psyllids that are reported as hosts for 1 or more of these parasitoids include C. pyri , C. pyrisuga , C. pyricola , and C. bidens (Jensen 1957, Herard 1986, Guerrieri and Noyes 2009, Jerinić-Prodanović et al 2019, Noyes 2019, Tougeron et al 2021). All 3 parasitoids are widespread in the Palaearctic Region (Guerrieri and Noyes 2009, Noyes 2019).…”

“…Observations on host use, behavior, hyperparasitoids, and life histories are available in several publications (Gutierrez 1966, Nguyen and Delvare 1982, Delvare 1984, Le Goff et al 2021, Tougeron et al 2021). Trechnites insidiosus largely is restricted to pear psyllid hosts but may occasionally parasitize other Cacopsylla (Herard 1986, Jerinić-Prodanović et al 2019). It is a valuable source of biocontrol in European and North American orchards (Nguyen et al 1984, Rieux et al 1990, Armand et al 1991, Unruh et al 1995, Olszak and Jaworska 2003, Tougeron et al 2021).…”

“…is at a lower rate than that by T. insidiosus (Armand et al 1991, Olszak and Jaworska 2003), biologically significant rates have been reported (Nguyen et al 1984, Herard 1985). Both Prionomitus are more generalized than T. insidiosus and regularly parasitize psyllids other than pear psyllids (Jensen 1957, Nguyen et al 1984, Zuparko 2015, Jerinić-Prodanović et al 2019, Noyes 2019). Neither Prionomitus is common in North American C. pyricola (Unruh et al 1995), instead preferring other psyllid taxa (Jensen 1957, McMullen 1971, Zuparko 2015).…”