EJE, vol. 103 (2006), issue 1

The impact of male-killing bacteria on the evolution of aphidophagous coccinellids

Michael E.N. MAJERUS

Eur. J. Entomol. 103 (1): 1-7, 2006 | DOI: 10.14411/eje.2006.001

Many aphidophagous coccinellids harbour male-killing bacteria. These maternally inherited bacteria kill males early in embryogenesis, female offspring of infected mothers gaining a large resource advantage from the consumption of their dead brothers. In this paper, the diversity of male-killing bacteria and their coccinellid hosts will be briefly reviewed. Thereafter, the impact that invasion by male-killers has on coccinellid hosts will be addressed in two ways. First, the selective effects due to the loss of male progeny, and the intra-genomic conflict resulting from the cytoplasmic inheritance of the bacteria will be considered. Reductions in mitochondrial...

Karyotype and male meiosis in Spartocera batatas and meiotic behaviour of multiple sex chromosomes in Coreidae (Heteroptera)

María José FRANCO, María José BRESSA, Alba GRACIELA PAPESCHI

Eur. J. Entomol. 103 (1): 9-16, 2006 | DOI: 10.14411/eje.2006.002

The Coreidae (Heteroptera) have holokinetic chromosomes and during male meiosis the autosomal bivalents segregate reductionally at anaphase I while the sex chromosomes do so equationally. The modal diploid chromosome number of the family is 2n = 21, with a pair of m-chromosomes and an X0/XX sex chromosome system. A 2n = 24/26 (male/female) and an X1X20/X1X1X2X2 sex chromosome system were found in Spartocera batatas (Fabricius). C-banding and fluorescent-banding revealed the presence of AT-rich heterochromatic bands medially located on all the autosomes, and one telomeric band...

Heartbeat reversal after sectioning the dorsal vessel and removal of the brain of diapausing pupae of Manduca sexta (Lepidoptera: Sphingidae)

Karel SLÁMA

Eur. J. Entomol. 103 (1): 17-26, 2006 | DOI: 10.14411/eje.2006.003

Reversal of heartbeat was monitored in vivo by noninvasive, multisensor, thermo-cardiographic and pulse-light, opto-cardiographic techniques. The dorsal vessel was sectioned at the beginning, in the middle and near the end of the abdomen. Changes in the heartbeat were simultaneously monitored in both the disconnected anterior and posterior sections of the heart. The results revealed the existence of a caudal regulatory cardiac centre located in the fused A7-A10 abdominal segments. Posterior sections, containing this terminal ampulla of the heart always exhibited a more or less normal heartbeat reversal, including both anterograde...

Corpus allatum volume-dependent differences in accessory gland maturation in long- and short-winged males of Pyrrhocoris apterus (Heteroptera: Pyrrhocoridae)

Radomír SOCHA, Magdalena HODKOVÁ

Eur. J. Entomol. 103 (1): 27-32, 2006 | DOI: 10.14411/eje.2006.004

In the present study the temporal changes in the volume of the corpus allatum in three experimental groups of adult males (macropterous, reproductive brachypterous and diapausing brachypterous) of the flightless bug Pyrrhocoris apterus were determined and related to the size of male accessory glands. The results revealed wing morph- and age-dependent differences in the corpus allatum volume in males of this bug. In 4-14 day old males, the volumes of the corpus allatum and accessory glands were largest in long-day reproductive brachypters, intermediate in long-day macropters, and smallest in short-day diapausing brachypters. The smaller corpus...

Ageing trajectory and longevity trade-off in an aphidophagous ladybird, Propylea dissecta (Coleoptera: Coccinellidae)

Geetanjali MISHRA, OMKAR

Eur. J. Entomol. 103 (1): 33-40, 2006 | DOI: 10.14411/eje.2006.005

The ageing trajectory (trend in ageing) and reproduction-longevity trade-off in both sexes of the ladybird Propylea dissecta were studied. The ageing trajectories of both sexes were investigated in terms of reproductive performance, using initial oviposition (egg laying within 24 h of mating) acting as an indicator of the effect of female age and initial viability (percentage of eggs laid within 24 h of mating that hatched) of the effect of male age. Ageing trends were sex dependent, with reproductive performance declining later in females than in males. Initial oviposition of females was largely age dependent and the initial viability of males...

Adaptive preferential selection of female coccinellid hosts by the parasitoid wasp Dinocampus coccinellae (Hymenoptera: Braconidae)

Dexter S. DAVIS, Sarah L. STEWART, Andrea MANICA, Michael E.N. MAJERUS

Eur. J. Entomol. 103 (1): 41-45, 2006 | DOI: 10.14411/eje.2006.006

Females of the parasitoid wasp Dinocampus coccinellae are known to parasitise both male and female coccinellid hosts. It is suggested that female hosts provide more resources for developing wasp larvae because they tend to be larger than male hosts, and female coccinellids have a much greater food intake than males. Thus the wasp's lifetime reproductive success should be increased by ovipositing preferentially in female rather than male hosts when given a choice. Laboratory experiments, using Coccinella septempunctata as a host, show that such a preference does exist. Wasps preferentially oviposit in females, and this preference is not...

Number of larval instars and sex-specific plasticity in the development of the small heath butterfly, Coenonympha pamphilus (Lepidoptera: Nymphalidae)

Enrique GARCÍA-BARROS

Eur. J. Entomol. 103 (1): 47-53, 2006 | DOI: 10.14411/eje.2006.007

The number of larval moults, larval head capsule width and pupal weight were investigated in both direct-developing and diapausing individuals of a South-West European population of Coenonympha pamphilus. The frequency distributions of head widths of successive larval instars overlapped, partly due to variation in the number of larval moults. The larvae that entered diapause went through five instars, instead of the four reported from this species. The evidence indicates that the five instar developmental pathway represents a plastic response rather than an example of compensatory growth. This alternative growth pattern was expressed in response...

BOOK REVIEW: Bauernfeind E. & Humpesch U.H.: Mayflies of Central Europe - Identification and Ecology (Insecta - Ephemeroptera).

T. SOLDÁN

Eur. J. Entomol. 103 (1): 54, 2006 | DOI: 10.14411/eje.2006.008

Verlag des Naturhistorischen Museums Wien, 2001, 239 pp. ISBN 3-900-275-86-6. Price EUR 53.00.

Exploitation of the serpentine leafminer Liriomyza trifolii and tomato leafminer L. bryoniae (Diptera: Agromyzidae) by the parasitoid Gronotoma micromorpha (Hymenoptera: Eucoilidae)

Yoshihisa ABE

Eur. J. Entomol. 103 (1): 55-59, 2006 | DOI: 10.14411/eje.2006.009

The developmental time and size of a solitary koinobiont parasitoid, Gronotoma micromorpha (Perkins) (Hymenoptera: Eucoilidae), were measured in two host species: the serpentine leafminer, Liriomyza trifolii (Burgess) (Diptera: Agromyzidae) and tomato leafminer, L. bryoniae (Kaltenbach). There was no significant difference in the developmental time of G. micromorpha in these two hosts. However, significantly larger G. micromorpha adults emerged from L. bryoniae than from L. trifolii puparia. Dissection of larvae revealed that when offered a choice G. micromorpha accepted...

BOOK REVIEW: Eisner T.: FOR LOVE OF INSECTS.

T. SOLDÁN

Eur. J. Entomol. 103 (1): 60, 2006 | DOI: 10.14411/eje.2006.010

The Belknap Press of Harvard University Press, Cambridge, Massachusetts, and London, UK, 2004, xiii + 448 pp. ISBN 0-674-01181-3, hard cover. Price USD 29.95, GBP 19.95.

Effect of early succession in wildflower areas on bug assemblages (Insecta: Heteroptera)

Thomas FRANK, Irene KÜNZLE

Eur. J. Entomol. 103 (1): 61-70, 2006 | DOI: 10.14411/eje.2006.011

One way of reducing the rapid decline in biological diversity in agricultural landscapes is to establish wildflower areas. The species richness and abundance of heteropteran bugs in twenty 1- to 4-year-old wildflower areas and winter wheat fields were compared, and the effects of succession in the wildflower areas investigated. Vegetation and environmental parameters (plant species richness, vegetation structure, flower abundance, field size, surrounding landscape) and their effects on bug species were explored. Total species richness and abundance of bugs were significantly lower in wheat fields than in wildflower areas but did not differ in the wildflower...

Community structure and reproductive biology of bark beetles (Coleoptera: Scolytinae) associated with Macaronesian Euphorbia shrubs

Bjarte H. JORDAL

Eur. J. Entomol. 103 (1): 71-80, 2006 | DOI: 10.14411/eje.2006.012

Dead wood of arborescent Euphorbia plants in the Macaronesian islands and Morocco has a diverse fauna of wood-boring beetles. Thirty-eight species were found in four species groups of Euphorbia, including 29 species of scolytine bark beetles, six species of cossonine weevils, two species of Laemophloeidae and one of Monotomidae. All scolytines (but not cossonines and cucujoids) have narrow host preferences, using only one host group for feeding and reproduction. The number of islands on which each species was found was also limited, resulting in geographically distinct guilds for each Euphorbia host. The majority of species (26)...

Response of Coccinella septempunctata and Menochilus sexmaculatus (Coleoptera: Coccinellidae) to their aphid prey, Lipaphis erysimi (Hemiptera: Aphididae) in rapeseed-mustard

Jogender S. RANA

Eur. J. Entomol. 103 (1): 81-84, 2006 | DOI: 10.14411/eje.2006.013

During a three year study in rapeseed-mustard crop, the response of two ladybird species, Coccinella septempunctata and Menochilus sexmaculatus was dependent upon density and time of appearance of their prey. Mustard aphid, Lipaphis erysimi appeared during the second (2000 and 2001) and last (2002) week of January. Aphid appearance was highly dependent on the phenological stage of the host plant. It appeared earlier in rapeseed, Brassica campestris var. BSH-1 than mustard, Brassica juncea var. RH-30. The ladybird beetle's eggs were observed in the last week of January, 4-5 weeks before the maximum aphid population....

On the head morphology of Lepiceridae (Coleoptera: Myxophaga) and the systematic position of the family and suborder

Eric ANTON, Rolf G. BEUTEL

Eur. J. Entomol. 103 (1): 85-95, 2006 | DOI: 10.14411/eje.2006.014

Adult head structures of Lepicerus inaequalis were examined in detail and interpreted functionally and phylogenetically. The monogeneric family clearly belongs to Myxophaga. A moveable process on the left mandible is an autapomorphy of the suborder. Even though Lepiceridae is the "basal" sistergroup of the remaining three myxophagan families, it is likely the group which has accumulated most autapomorphic features, e.g. tuberculate surface structure, internalised antennal insertion, and a specific entognathous condition. Adults of Lepiceridae and other myxophagan groups possess several features which are also present in larvae (e.g., premental...

Metathoracic glands and associated evaporatory structures in Reduvioidea (Heteroptera: Cimicomorpha), with observation on the mode of function of the metacoxal comb

Christiane WEIRAUCH

Eur. J. Entomol. 103 (1): 97-108, 2006 | DOI: 10.14411/eje.2006.015

Structures that assist in spreading secretions produced by the metathoracic glands were examined in Reduviidae and Pachynomidae (Heteroptera). The systematic distribution of a row of long and stout setae on the metacoxa, the metacoxal comb, was reinvestigated in a representative sample in both taxa. Observations on living Dipetalogaster maximus (Reduviidae: Triatominae) corroborated the interpretation of this metacoxal comb as an evaporatory device, which assists in atomizing the gland secretions. In addition to the metacoxal comb, a row of stout setae on the metacetabulum - a metacetabular comb - was found in several Reduviidae, which interacts...

Oldest records of Bombyliidae: Phthiriinae and Mythicomyiidae: Glabellulinae from the Lowermost Eocene amber of France (Diptera: Bombylioidea)

André NEL

Eur. J. Entomol. 103 (1): 109-114, 2006 | DOI: 10.14411/eje.2006.016


Elektrophthiria
magnifica gen. n., sp. n., oldest bee fly of the bombyliid subfamily Phthiriinae, is described from the Lowermost Eocene amber of Oise (France). It suggests at least a Late Cretaceous age for this group, coincident with the diversification of the flowering plants. Eurodoliopteryx inexpectatus gen. n., sp. n., oldest representative of the mythicomyiid subfamily Glabellulinae, is probably the sister genus of extant Doliopteryx, distributed in Africa and the Arabian peninsula, under very arid conditions. This discovery suggests a relatively humid forest close to a river with a drier surrounding area...

A revision of Metriorrhynchus from the Philippines with molecular evidence of an Australian origin of the Oriental Metriorrhynchus fauna (Coleoptera: Lycidae)

Ladislav BOCÁK, Kiyoshi MATSUDA, Takashi YAGI

Eur. J. Entomol. 103 (1): 115-126, 2006 | DOI: 10.14411/eje.2006.017

The Metriorrhynchus fauna of the Philippines is revised. All known species are redescribed and seven new species are added: M. isarogensis sp. n., M. menieri sp. n., M. mindanaoensis sp. n., M. newbataanensis sp. n., M. ochii sp. n., M. palawanensis sp. n., and M. takedai sp. n. Additionally, M. yoshioi sp. n. is described from Sulawesi. Xylobanus longissimus Pic, 1922 is transferred to Metriorrhynchus, and Metriorrhynchus pallidus (Dalman in Schoenherr, 1818) is transferred to Leptotrichalus Kleine, 1925. The dispersal routes and speciation of Metriorrhynchus...

Review of the tribe Lyropaeini (Coleoptera: Lycidae)

Milada BOCÁKOVÁ

Eur. J. Entomol. 103 (1): 127-136, 2006 | DOI: 10.14411/eje.2006.018

A review of genera within the tribe Lyropaeini is given. Three new genera - Lyrolib gen. n., Horakiella gen. n., and Ambangia gen. n., and a subgenus Macroambangia subgen. n. within Ambangia gen. n. are described. The following twelve new species are proposed as new to science: Ambangia nigra sp. n. (Sulawesi), A. wallacei sp. n. (Sulawesi), Ambangia (Macroambangia) pallidicornis sp. n. (Sulawesi), A. (M.) celebensis sp. n. (Sulawesi), A. (M.) nigricornis sp. n. (Sulawesi), Alyculus wittmeri sp. n. (Sumatra), Horakiella hammondi...

Revision of the genus Teratolytta (Coleoptera: Meloidae)

Marco A. BOLOGNA, Andrea DI GIULIO

Eur. J. Entomol. 103 (1): 137-161, 2006 | DOI: 10.14411/eje.2006.019

The blister beetle genus Teratolytta, belonging to the tribe Lyttini, is revised and a classification is proposed. Two main sections of the genus - one including five groups of species and the other three groups - are tentatively defined. Four new species from Eastern and Southern Anatolia are described (T. carlae sp. n., T. dvoraki sp. n., T. monticola sp. n., T. taurica sp. n.), and a key to the 17 recognized species is proposed. A diagnosis of the species as well as taxonomic remarks are proposed, and a catalogue of localities is presented. In particular, Teratolytta tricolor (Haag-Rutenberg, 1880) comb....

Redefinition of the Clusiinae and Clusiodinae, description of the new subfamily Sobarocephalinae, revision of the genus Chaetoclusia and a description of Procerosoma gen. n. (Diptera: Clusiidae)

Owen LONSDALE, Stephen A. MARSHALL

Eur. J. Entomol. 103 (1): 163-182, 2006 | DOI: 10.14411/eje.2006.020

The higher classification of the Clusiidae is reviewed, and the family is divided into the subfamilies Clusiodinae, Clusiinae and the new subfamily Sobarocephalinae, all of which are (re)defined. The newly defined Clusiinae includes the genera Phylloclusia Hendel, 1917, Tetrameringia McAlpine, 1960, Amuroclusia Mamaev, 1987, Clusia Haliday, 1838, Paraclusia Czerny, 1903, Alloclusia Hendel, 1917 and Apiochaeta Czerny, 1903. The Sobarocephalinae includes the genera Sobarocephala Czerny, 1903, Procerosoma gen. n., and Chaetoclusia Coquillett, 1904. The new genus Procerosoma...

The identity of Pseudopsila, description of a new subgenus of Psila, and redefinition of Psila sensu lato (Diptera: Psilidae)

Matthias BUCK, Stephen A. MARSHALL

Eur. J. Entomol. 103 (1): 183-192, 2006 | DOI: 10.14411/eje.2006.021

The type species of Pseudopsila Johnson, P. fallax (Loew), and two related species are found to belong in Psila s. str., and Pseudopsila is thus synonymized with Psila Meigen. The remaining species formerly included in Pseudopsila form a monophyletic group here described as Xenopsila Buck subgen. n. [i.e., Psila (Xenopsila) collaris Loew comb. n., P. (X.) bivittata Loew comb. n., P. (X.) lateralis Loew comb. n., P. (X.) arbustorum Shatalkin comb. n., P. (X.) nemoralis Shatalkin comb. n., P....

Revision of New World Loxocera (Diptera: Psilidae), with phylogenetic redefinition of Holarctic subgenera and species groups

Matthias BUCK, Stephen A. MARSHALL

Eur. J. Entomol. 103 (1): 193-219, 2006 | DOI: 10.14411/eje.2006.022

The New World species of Loxocera Meigen are revised including two new species, L. (Imantimyia) ignyodactyla Buck sp. n. from Costa Rica (first record of the genus from the Neotropical region) and L. (Imantimyia) ojibwayensis Buck sp. n. from Ontario, Canada. Loxocera californica Capelle is synonymized with L. collaris Loew and lectotypes are designated for L. pleuritica Loew and L. cylindrica var. obsoleta Johnson (both synonyms of L. cylindrica Say). The New World species are diagnosed and a key to species is provided. The male and female terminalia of Loxocera...

BOOK REVIEW: Bächli G., Vilela C.R., Andersson S. & Saura A.: The Drosophilidae (Diptera) of Fennoscandia and Denmark. In: Fauna Entomologica Scandinavica. Vol. 39

M. CHVÁLA

Eur. J. Entomol. 103 (1): 220, 2006 | DOI: 10.14411/eje.2006.023

Brill, Leiden, New York, 2004, 362 pp. ISBN 9-004-14074-3. Price EUR 90.00, USD 129.00.

Berchmansus elegans (Neuroptera: Chrysopidae): Larval and adult characteristics and new tribal affiliation

Catherine A. TAUBER, Maurice J. TAUBER, Gilberto S. ALBUQUERQUE

Eur. J. Entomol. 103 (1): 221-231, 2006 | DOI: 10.14411/eje.2006.024

The genus Berchmansus Navás, which was previously assigned to the tribe Leucochrysini, consists of three very rare species, all described from the Neotropics and all poorly known. Our report (1) provides the first description of a Berchmansus larva, the first instar of Berchmansus elegans (Guérin Méneville), (2) illustrates and redescribes the B. elegans adult, with emphasis on male and female genitalia, and (3) examines the larval and adult characters vis-à-vis the tribal affiliation of the genus. Given that the B. elegans adult and first instar share many apomorphies with other belonopterygine genera, this...

Molecular studies of Anopheles culicifacies (Diptera: Culicidae) in Sri Lanka: Sibling species B and E show sequence identity at multiple loci

Sinnathamby Noble SURENDRAN, Nicola J. HAWKES, Andrew STEVEN, Janet HEMINGWAY, Ranjan RAMASAMY

Eur. J. Entomol. 103 (1): 233-237, 2006 | DOI: 10.14411/eje.2006.025

The anomaly that Anopheles culicifacies (Diptera: Culicidae) species B is a major vector of malaria in Sri Lanka, but a non-vector in India, has been noted for several years. In 1999, a Y chromosome dimorphism associated with Plasmodium vivax infectivity within the Indian A. culicifacies species B suggested that this was itself a complex of two sibling species, B and E. A recent cytogenetic analysis shows the sympatric presence of these sibling species in Sri Lanka, a situation similar to that reported from nearby Rameshwaram Island, India. Species E, with a submetacentric Y chromosome, is a more effective vector of P. vivax...

C-banding, fluorescent staining and NOR location in holokinetic chromosomes of bugs of the Neotropical genus Antiteuchus (Heteroptera: Pentatomidae: Discocephalinae)

Cecilia LANZONE, Maria José DE SOUZA

Eur. J. Entomol. 103 (1): 239-243, 2006 | DOI: 10.14411/eje.2006.026

Different cytogenetic techniques including C-banding, base-specific fluorochromes and silver nitrate staining were used to compare the karyotypes of three species of bugs, representatives of the Neotropical genus Antiteuchus, namely A. mixtus, A. sepulcralis and A. macraspis. The species have holokinetic chromosomes which is typical of the Hemiptera, and their diploid chromosome number is 2n = 14 and they have an XX/XY (female/male) sex chromosome system. C-banding revealed telomeric blocks of constitutive heterochromatin in most chromosomes of these three species. In each species, CMA3-positive blocks were observed...

Resource guarding by Ptomascopus morio: Simple parental care in the Nicrophorinae (Coleoptera: Silphidae)

Seizi SUZUKI, Masahiro NAGANO

Eur. J. Entomol. 103 (1): 245-248, 2006 | DOI: 10.14411/eje.2006.027

Nicrophorine beetles use small vertebrate carrion for breeding resource. While Nicrophorus spp. have highly developed biparental care, no form of parental care is recorded for Ptomascopus spp. We examined two effects of resource guarding by Ptomascopus morio. The presence of parents, especially the female, reduced the number of fly larvae on chicken carrion. Parents also enhanced the survival of brood faced with predation by the rove beetle, Ontholestes gracilis. In 6 out of 20 trials, the rove beetle predators were killed by Ptomascopus morio parents. We conclude that Ptomascopus morio has a simple, and possibly...

Short-term consequences of nutritional depression on foraging behaviour of dark bush-crickets Pholidoptera griseoaptera (Orthoptera: Ensifera)

Steffen HAHN, Grit KUNERT

Eur. J. Entomol. 103 (1): 249-253, 2006 | DOI: 10.14411/eje.2006.028

Temporary malnutrition during juvenile development often negatively influences the life-history decisions of adults. Hence, individuals should avoid this effect by compensatory feeding on the limited resource when the food situation improves. In a feeding experiment, bush-crickets (Pholidoptera griseoaptera) responded to nine days depression of animal food supply by increasing their feeding activities on insect carcasses when a full-nutritional diet was available. As a short-term reaction, treated individuals of both sexes took 3.4 times more food from carcasses (0.084 g / 9 h) than control individuals. The increased carcass intake levelled...

BOOK REVIEW: Basset Y., Novotný V., Miller S.E. & Kitching R.L. (eds): Arthropods of Tropical Forests: Spatio-temporal Dynamics and Resource Use in the Canopy.

A. AIELLO

Eur. J. Entomol. 103 (1): 253-254, 2006 | DOI: 10.14411/eje.2006.029

Cambridge University Press, Cambridge, 2003, xvi + 474 pp. ISBN 0-521-82000-6 (hard cover). Price USD 110.00.

Effect of the secondary substances from wheat on the growth and digestive physiology of cotton bollworm Helicoverpa armigera (Lepidoptera: Noctuidae)

Yu WANG, Qing-Nian CAI, Qing-Wen ZHANG, Ying HAN

Eur. J. Entomol. 103 (1): 255-258, 2006 | DOI: 10.14411/eje.2006.030

Three secondary compounds, pyrocatechol, gramine and ferulic acid from wheat were separately incorporated into artificial diets and fed to cotton bollworm Helicoverpa armigera (Hübner) larvae to determine their effects on larval and pupal weights and the nutritional indices of the larvae. The results show that these three secondary compounds can decrease the mean larval and pupal weights of cotton bollworm, with the mean larvae weights differing significantly between treatments. Mean pupal weight was only significantly reduced by ferulic acid and gramine, but not pyrocatechol. There were significant correlations between mean larval weight and...

The influence of yellow lupin intercropped with spring triticale on predatory carabid beetles (Coleoptera: Carabidae)

Michal HUREJ, Jacek P. TWARDOWSKI

Eur. J. Entomol. 103 (1): 259-261, 2006 | DOI: 10.14411/eje.2006.031

Intercropping may have a positive effect on the abundance and activity of carabid beetles and therefore their response to intercropping yellow lupin with spring triticale was studied for a period of three years (2001-2003). Carabids were most numerous in yellow lupin monoculture and in the intercrop with the highest proportion of lupin. Important differences between the experimental treatments were found, but they were mostly non-significant because of the great variation between samples. It is supposed that the positive effect of lupin on carabid beetles was due to the shelter it provides. During the three-year study 59 species of carabid beetles...

Increased xylem ingestion and decreased phloem ingestion in the aphid Acyrthosiphon pisum (Hemiptera: Aphididae) parasitised by Aphidius ervi (Hymenoptera: Braconidae)

Claudio C. RAMÍREZ, Cristian A. VILLAGRA, Hermann M. NIEMEYER

Eur. J. Entomol. 103 (1): 263-265, 2006 | DOI: 10.14411/eje.2006.032

The effects of parasitisation by Aphidius ervi on the feeding behaviour of the aphid Acyrthosiphon pisum were studied. There was progressive increase in the time devoted to xylem ingestion (G waveform) and concomitant decrease in time devoted to phloem ingestion (E2 waveform) in parasitized relative to unparasitized aphids, as the time from parasitisation increased. These changes are interpreted as a way aphids compensate for metabolic changes occurring during parasitisation.

Phenylacetaldehyde: A chemical attractant for common green lacewings (Chrysoperla carnea s.l., Neuroptera: Chrysopidae)

Miklós TÓTH, András BOZSIK, Ferenc SZENTKIRÁLYI, Agostino LETARDI, Maria Rosaria TABILIO, Marcello VERDINELLI, Pietro ZANDIGIACOMO, Judit JEKISA, István SZARUKÁN

Eur. J. Entomol. 103 (1): 267-271, 2006 | DOI: 10.14411/eje.2006.033

At five sites in Hungary and Italy, traps baited with phenylacetaldehyde caught significantly higher numbers (10 to 100 times more) of green lacewings than unbaited traps, which demonstrates that this compound is an attractant. Traps with three bait dispensers usually caught more than those with one dispenser, but the difference was significant only at two out of five test sites. There was no difference in the numbers caught by sticky delta and funnel traps baited with phenylacetaldehyde. However, funnel traps could be adapted to catch living green lacewings. The vast majority of the specimens belonged to the Chrysoperla carnea species complex....

BOOK REVIEW: Grimaldi D. & Engel M. 2005: Evolution of the Insects.

B. HEMING

Eur. J. Entomol. 103 (1): 273-275, 2006 | DOI: 10.14411/eje.2006.034

Cambridge University Press, New York and Cambridge, xv + 755 pp., 41 tables, 862 figs, glossary, index. ISBN 0-521-82149-5 Cloth. Price USD 75.00.

BOOK REVIEW: McGavin G.C.: ESSENTIAL ENTOMOLOGY. AN ORDER-BY-ORDER INTRODUCTION.

T. SOLDÁN

Eur. J. Entomol. 103 (1): 276, 2006 | DOI: 10.14411/eje.2006.035

Oxford University Press, Oxford, 2001, vi + 318 pp. ISBN 0-19-8500025. Price GBP 18.99.