EJE, vol. 100 (2003), issue 3
Activity and dormancy in relation to body water and cold tolerance in a winter-active springtail (Collembola)
William BLOCK, Juerg ZETTEL
Eur. J. Entomol. 100 (3): 305-312, 2003 | DOI: 10.14411/eje.2003.049
Ceratophysella sigillata (Collembola, Hypogastruridae) has a life cycle which may extend for >2 years in a temperate climate. It exists in two main morphs, a winter-active morph and a summer-dormant morph in central European forests. The winter-active morph often occurs in large aggregations, wandering on leaf litter and snow surfaces and climbing on tree trunks. The summer-dormant morph is found in the upper soil layers of the forest floor. The cryobiology of the two morphs, sampled from a population near Bern in Switzerland, was examined using Differential Scanning Calorimetry to elucidate the roles of body water and the cold tolerance...
Habitat of pre-hibernating larvae of the endangered butterfly Euphydryas aurinia (Lepidoptera: Nymphalidae): What can be learned from vegetation composition and architecture?
Martin KONVICKA, Vladimir HULA, Zdenek FRIC
Eur. J. Entomol. 100 (3): 313-322, 2003 | DOI: 10.14411/eje.2003.050
Habitats of pre-hibernating gregarious larvae of the endangered Marsh Fritillary butterfly (Euphydryas aurinia) were studied in field in Western Bohemia, Czech Republic. The species inhabits moist seminatural meadows managed by light grazing and haymaking; the only local host plant is Succisa pratensis. The redundancy analyses of the vegetation composition (around 166 nest-bearing and 381 unoccupied host plants) showed that nest presence was positively associated with short cushion-forming grasses (esp. Nardus stricta). It was negatively associated with competitively superior tall grasses (e.g., Deschampsia caespitosa) and...
Short-term indirect interactions between two moth (Lepidoptera: Noctuidae) species mediated by shared parasitoids: The benefit of being scarce
Tiit TEDER, Toomas TAMMARU
Eur. J. Entomol. 100 (3): 323-328, 2003 | DOI: 10.14411/eje.2003.051
Despite the impact of parasitoids on insect populations being extensively studied, indirect parasitoid-mediated effects remain rarely documented in natural communities. We examined the influence of shared parasitoids on the interactions between two functionally monophagous moths, Nonagria typhae and Archanara sparganii. The moths showed a considerable variation in terms of relative abundance and the degree of phenological synchrony between the species. On average, parasitism levels caused by shared parasitoids did not differ between the two host species. Relative parasitism levels of the two hosts, however, varied considerably among different...
Larval omnivory in Amara aenea (Coleoptera: Carabidae)
Karel HÙRKA, Vojtìch JARO©ÍK
Eur. J. Entomol. 100 (3): 329-335, 2003 | DOI: 10.14411/eje.2003.052
The duration of development, survivorship and adult size were compared for the larvae of Amara aenea reared in the first generation on pure diets of seeds (Stellaria media, Capsella bursa-pastoris, Tussilago farfara, Plantago major, Urtica dioica, or Potentilla argentela), or a pure diet of yellow mealworms (Tenebrio molitor larvae), and on a mixed diet of seeds and mealworm larvae (T. molitor, S. media and C. bursa-pastoris). To ascertain any long-term effects of pure diets, the beetles were reared on the same pure diet for several generations, or on different pure diets...
BOOK REVIEW: Czechowski W., Radchenko A. & Czechowska W.: The Ants (Hymenoptera, Formicidae) of Poland.
Eur. J. Entomol. 100 (3): 336, 2003 | DOI: 10.14411/eje.2003.053
Museum and Institute of Zoology Polish Academy of Sciences, Warszawa, 2002, pp. 200 + 1 Table
Adaptations of Coccinella magnifica, a myrmecophilous coccinellid to aggression by wood ants (Formica rufa group). II. Larval behaviour, and ladybird oviposition location1
John J. SLOGGETT, Michael E.N. MAJERUS
Eur. J. Entomol. 100 (3): 337-344, 2003 | DOI: 10.14411/eje.2003.054
Like adults, larvae of the myrmecophilous ladybird Coccinella magnifica are rarely attacked by Formica rufa ants on foraging trails, but more often attacked on ant-tended aphid colonies. Larvae of the non-myrmecophile Coccinella septempunctata, to which C. magnifica was compared, were more readily attacked by ants in both situations. To avoid or counter ant aggression when foraging for aphids, C. magnifica larvae exhibit three main tactics: they may feed on un- or non-tended aphids; when feeding on tended colonies they often carry prey away, minimising time spent there; and if attacked, they use limited chemical defence....
Perception of oviposition-deterring larval tracks in aphidophagous coccinellids Cycloneda limbifer and Ceratomegilla undecimnotata (Coleoptera: Coccinellidae)
Eur. J. Entomol. 100 (3): 345-350, 2003 | DOI: 10.14411/eje.2003.055
The ability of the aphidophagous coccinellids Cycloneda limbifer Casey and Ceratomegilla undecimnotata (Schneider) to discriminate between simultaneously provided clean paper strips and paper strips with oviposition-deterring larval tracks was studied after the ablation of different sense organs. Females oviposited similar numbers of eggs on paper strips with conspecific tracks and on clean paper strips only when deprived of both maxillary palpi. C. undecimnotata without maxillary palpi also did not differentiate between clean paper strips and paper strips with tracks of the coccinellid Leis dimidiata (F.). If both antennae...
Drosophila species (Diptera: Drosophilidae) oviposition patterns on fungi: The effect of allospecifics, substrate toughness, ovipositor structure and degree of specialisation
Jennifer ROUQUETTE, Andrew John DAVIS
Eur. J. Entomol. 100 (3): 351-355, 2003 | DOI: 10.14411/eje.2003.056
To determine if small-scale resource partitioning aids coexistence in fungal breeding Diptera we investigated the avoidance of interspecific larval competition by micro-resource partitioning of the host substrate in several species of Drosophila ovipositing on fungal fruiting bodies. No avoidance was detected and oviposition patterns were unaffected by the presence of allospecifics. There was a general tendency for all species to oviposit preferentially on the cap but no significant differences between species. Egg distribution was not strongly related to the sporophore's resistance to penetration measured by penetrometer and was also uncorrelated...
Morphology of immature stages of Prostomis mandibularis (Coleoptera: Tenebrionoidea: Prostomidae)
Isabel SCHUNGER, Rolf G. BEUTEL, Ralf BRITZ
Eur. J. Entomol. 100 (3): 357-370, 2003 | DOI: 10.14411/eje.2003.057
Structural features of larvae and pupae of Prostomis mandibularis are described in detail. Larval features are discussed with respect to their functional and phylogenetic significance. The distinct asymmetry of the larval head, absence of stemmata, presence of a sensorial field on antennomere III, and elongated and broadened mandibles of pupae and adults are autapomorphies of Prostomidae. The placement of Prostomis within Tenebrionoidea is suggested by the posteriorly diverging gula with well developed gular ridges and the anterior position of the posterior tentorial arms. Affinities of Prostomidae with the pythid-pyrochroid-lineage is...
Pepila Weise: Taxonomic identity of the genus and revision of the megalopoides species-group, and description of two new species from Australia (Coleoptera: Chrysomelidae: Alticinae)
Maurizio BIONDI, Paola D'ALESSANDRO
Eur. J. Entomol. 100 (3): 371-379, 2003 | DOI: 10.14411/eje.2003.058
In this paper some taxonomic observations on the Australian flea beetle genus Pepila Weise, 1923 are reported. The following species are transferred to the genus Pepila and lectotypes for them designated: Chaetocnema carinata Baly, 1877; Plectroscelis crassipennis Blackburn, 1896; Chaetocnema fuscomaculata Baly, 1877; Plectroscelis hypocrita Blackburn, 1896; Chaetocnema laticeps Baly, 1877; Plectroscelis meyricki Blackburn, 1896; Dibolia ochracea Waterhouse, 1838; Plectroscelis pallidior Blackburn, 1896; Dibolia pygmaea Waterhouse, 1838; Plectroscelis quadraticollis Blackburn,...
The genus Anthelephila (Coleoptera: Anthicidae)
Eur. J. Entomol. 100 (3): 381-392, 2003 | DOI: 10.14411/eje.2003.059
The genus Anthelephila Hope, 1833 and its type species, Anthelephila cyanea Hope, 1833, are redescribed. Based on examination of the type material, the following new synonymy is proposed, Anthelephila Hope, 1833 (= Formicoma Motschoulsky, 1845 syn. n.) and A. cyanea Hope, 1833 (= Notoxus caeruleus Thunberg, 1787 syn. n.). Five genus-group names are regarded as unjustified emendations and are placed as synonyms: Anthelephila Hope, 1833 (=Anthelephilus LaFerté-Sénectère, 1849; Formicosoma Motschoulsky, 1845; Myrmecosoma Mannerheim, 1846; Formicomus LaFerté-Sénectère,...
Homology and morphology in Poduromorpha (Hexapoda, Collembola)
Cyrille A. D'HAESE
Eur. J. Entomol. 100 (3): 385-407, 2003 | DOI: 10.14411/eje.2003.060
The detailed external morphology and general anatomy of the majority of families and subfamilies of Poduromorpha were investigated and compared. This examination was done in relation to the three remaining orders of Collembola: Entomobryomorpha, Symphypleona and Neelipleona. Within Poduromorpha, homologies among the different families and subfamilies are established for general chaetotaxy, and chaeotaxy of head, buccal cone, sensilla of fourth antennal segment, anal valves and tibiotarsus. A consistent and comprehensive nomenclature is proposed for these morphological features unifying those applied in scattered existing studies. Observations on first...
Descriptions of adults, immature stages and venom apparatus of two new species of Dacnusini: Chorebus pseudoasphodeli sp. n., parasitic on Phytomyza chaerophili Kaltenbach and C. pseudoasramenes sp. n., parasitic on Cerodontha phragmitophila Hering (Hymenoptera: Braconidae: Alysiinae; Diptera: Agromyzidae)
Josep TORMOS, Xavier PARDO, Ricardo JIMÉNEZ, Josep Daniel ASÍS, Severiano F. GAYUBO
Eur. J. Entomol. 100 (3): 393-400, 2003 | DOI: 10.14411/eje.2003.061
The imagines, cast skin of the final larval instar, and venom apparatus of Chorebus pseudoasphodeli sp. n., an endoparasitoid of Phytomyza chaerophylli Kaltenbach, 1856 on Daucus carota L., and Chorebus pseudoasramenes sp. n., an endoparasitoid of Cerodontha phragmitophila Hering, 1935 on Arundo donax L., two new species of Dacnusini from Spain, are described, illustrated, and compared with those of allied species. The immature larvae, mature larva, and pupa of C. pseudoasphodeli sp. n. are also described, illustrated, and compared. Morphological structures of phylogenetic value are discussed, and keys...
Description of two new species of Enclisis (Hymenoptera: Ichneumonidae) and support for the secretory role of tyloids in ichneumonid males
Santiago BORDERA, Estefanía HERNÁNDEZ-RODRÍGUEZ
Eur. J. Entomol. 100 (3): 401-409, 2003 | DOI: 10.14411/eje.2003.062
Two new species of Enclisis Townes, 1970 from Spain are described and illustrated: E. dichroma sp.n. and E. schwarzi sp.n. The new species are distinguished from the closest species E. infernator and E. ornaticeps by head and leg characters and body colour. Data on their phenology and a key to these four European species are presented. External and internal scanning electron microscopy of male tyloids revealed that these structures, in both new species, have a secretory role.
The genus Testudobracon in eastern China and the description of three new species (Hymenoptera: Braconidae: Braconinae)
Yi-Ping WANG, Xue-Xin CHEN, Jun-Hua HE
Eur. J. Entomol. 100 (3): 411-416, 2003 | DOI: 10.14411/eje.2003.063
The species of Testudobracon Quicke from eastern China are revised with four species recognized, including three new species: (Testudobracon flavus sp. n., Testudobracon guangxinensis sp. n. and Testudobracon grandiventris sp. n.). The new species are fully described and illustrated. A key to species of this genus is also provided. The types and other specimens are deposited in the Collection of Parasitic Hymenoptera at the Zhejiang University, Hangzhou, China.
Taxonomy of European Eristalinus (Diptera: Syrphidae) based on larval morphology and molecular data
Celeste PÉREZ-BAÑÓN, Santos ROJO, Gunilla STÅHLS, M. Angeles MARCOS-GARCÍA
Eur. J. Entomol. 100 (3): 417-428, 2003 | DOI: 10.14411/eje.2003.064
The taxonomy of European Eristalinus syrphid flies is reviewed. New data on their life histories, biological notes and a key to species using pupal characters are provided. The larvae and puparia of Eristalinus taeniops (Wiedemann, 1818) and Eristalinus megacephalus (Rossi, 1794) are described for the first time, including new morphological characters of the thoracic respiratory process of all species. The morphology of the male genitalia of E. megacephalus is described and compared with that of E. taeniops.
The results of our morphological studies of the male genitalia and molecular data (mitochondrial COI and...
Natural hybridisation between Aphis grossulariae and Aphis schneideri: morphological evidence (Sternorrhyncha: Aphididae)
Eur. J. Entomol. 100 (3): 429-434, 2003 | DOI: 10.14411/eje.2003.065
Morphometric analysis of 176 natural samples of A. grossulariae Kaltenbach, 1843 and A. schneideri (Börner, 1940) was performed, using 308 alate and 750 apterous viviparous females from 25 countries altogether. Morphologically intermediate specimens of presumably hybrid origin were noticed in 63 (35.79%) samples, comprising 12.67% of all apterous and 4.87% of all alate viviparae studied. 31 sample originating from 11 countries had 50% or more intermediate specimens of one or both morphs. "Rich" samples (having 4 or more specimens of the same morph) with the prevailing numbers of hybrid morphotypes were from the Netherlands, Russia (Moscow...
Identification key to Central European species of Trachytes (Acari: Uropodina) with redescriptions, ecology and distribution of Slovak species
Eur. J. Entomol. 100 (3): 435-448, 2003 | DOI: 10.14411/eje.2003.066
A total of 23 uropodine species of the genus Trachytes (Acari, Mesostigmata) are reliably recorded to occur in Central Europe and included in identification keys for adults (23 spp.) and deutonymphal stages (9 spp.), respectively. For the first time, the diagnostic characters of deutonymphs of the species T. baloghi, T. minima, T. minimasimilis, T. mystacinus and T. splendida are figured. Ten species found in Slovakia are redescribed (T. aegrota, T. baloghi, T. hirschmanni, T. irenae, T. lamda, T. minima, T. minimasimilis, T. mystacinus, T. pauperior...
The value of the ITS2 region for the identification of species boundaries between Alloxysta hyperparasitoids (Hymenoptera: Charipidae) of aphids
F.J. Frank VAN VEEN, Robert BELSHAW, H. Charles J. GODFRAY
Eur. J. Entomol. 100 (3): 449-453, 2003 | DOI: 10.14411/eje.2003.067
1) Alloxystinae are major secondary parasitoids of aphids, important in both their ecology and pest management. 2) Two radically differing views of alloxystine taxonomy exist in the literature, in one of which the group is very diverse, in the other it consists of a few variable species. 3) We sequenced a variable nuclear gene region (ITS2) for 28 specimens of a morphologically clearly defined group which, in one view belong to a single species and in the other to four species. We find that the four putative species each carry a different unique allele with no intraspecific variation. We show that the probability of the observed distribution of alleles...
Presence of [His7]- corazonin in the central nervous system of a newly isolated albino strain of Schistocerca gregaria (Orthoptera: Acrididae) - mass spectrometric and immunocytochemical evidence
Mazibur M. RAHMAN, Geert BAGGERMAN, Liliane SCHOOFS, Arnold DE LOOF, Michael BREUER
Eur. J. Entomol. 100 (3): 455-458, 2003 | DOI: 10.14411/eje.2003.068
An inbred strain of a newly isolated spontaneous albino mutant of Schistocerca gregaria (Forsk.) was examined for the presence of the neuropeptide [His7]-corazonin by immunocytochemical and mass spectrometric methods. It was concluded that this peptide is definitely present in a limited number of neurosecretory cells in the pars lateralis as well as in the corpora cardiaca (CC). Injection of either synthetic [His7]-corazonin or of extracts of CC of the normal coloured phenotype of S. gregaria failed to induce darkening of the cuticle, while albino Locusta migratoria, used as a positive control, turned dark....