EJE, vol. 91 (1994), issue 4

Semiochemicals from Lobesia botrana (Lepidoptera: Tortricidae) eggs deter oviposition by the codling moth Cydia pomonella (Lepidoptera: Tortricidae)


Eur. J. Entomol. 91 (4): 353-359, 1994

The intention of this study was to falsify a hypothesis of interspecific avoidance of semiochemicals from egges by ovipositing tortricid females. The oviposition responses of Cydia pomonella (L.) females to apples baited with blends of semiochemicals identified in another tortricid species, Lobesia botrana (Den. et Schiff.) were investigated. Experiments were conducted in binary choice tests using natural oviposition substrates (apples). In each experimental arena, 4 mated females were offered 16 apples (8 treated and 8 untreated) and the number of egges was compared. Females avoid ovipositing on apples treated with a blend of nine components...

Book Review: The Butterflies of the West Indies and South Florida.


Eur. J. Entomol. 91 (4): 360, 1994

Smith D.S., Miller L.D. & Miller L.J.: The Butterflies of the West Indies and South Florida. Oxford University Press, Oxford, 1994, 255 pp., 32 colour plates, 2 text figures.

Oviposition-deterring pheromone in Chrysopa oculata (Neuroptera: Chrysopidae)


Eur. J. Entomol. 91 (4): 361-370, 1994

Larvae of Chrysopa oculata Say mark, chemically, the substrate with a substance secreted from the tip of their abdomen. The effect of paper substrates contaminated with this secretion on the oviposition of C. oculata females was assessed in laboratory choice experiments. The active substance(s) were soluble in chloroform and in water but not in methanol, ethylether or petroleum ether. Paper substrates treated with extracts of the substance remained activeat room temperature for up to three weeks. The effectiveness, in terms of the amount of active secretion produced per unit of larval body weight, was greater for first rather than for...

Effect of hydroxamic acids on feeding behaviour and performance of cereal aphids (Hemiptera: Aphididae) on wheat


Eur. J. Entomol. 91 (4): 371-374, 1994

The feeding behaviour of five cereal aphid species in wheat seedlings (measured by the time taken by an aphid to penetrate the phloem and the time spent in committed pholem ingestion) and their performance (measured as mean relative growth rates) were determined as a function of hydroxamic acid concentrations in the seedlings. Lower mean relative growth rates and higher times to attain a committed phloem ingestion were associated with higher hydroxamic acid values. Duration of committed phloem ingestion was not influenced by hydroxamic acid values.

Population genetic structure during aestivation in the sycamore aphid Drepanosiphum platanoidis (Hemiptera: Drepanosiphidae)


Eur. J. Entomol. 91 (4): 375-383, 1994

Cellulose acetate electrophoresis was used to investigate genetic variation at 15 enzyme loci in aestivating populations of the sycamore aphid, Drepanosiphum platanoidis (Schrank) (Hemiptera: Drepanosiphidae). The level of polymorphism P (over all loci) was 20%. Of the polymorphic loci, only phosphoglucomutase (PGM), with four alleles, provided consistent, interpretable banding patterns and was subsequently used to investigate population structure and gene flow at various spatial levels in southern Britain. Of 13 aphid aggregations (from single leaves) collected from the lower canopy of a selected tree, only one deviated significantly from Hardy-Weinberg...

Book Review: Applied Demography for Biologists with Special Emphasis to Insects.


Eur. J. Entomol. 91 (4): 384, 1994

Carey J.R.: Applied Demography for Biologists with Special Emphasis to Insects. Oxfor University Press, New York, Oxford, 1993, 206 pp.

Adult feeding preferences of the large pine weevil, Hylobius abietis (Coleoptera: Curculionidae)


Eur. J. Entomol. 91 (4): 385-389, 1994

The adult feeding preferences of Hylobius abietis were tested at three temperatures, 10, 15 and 20C, with three different host plants, Pinus sylvestris, Picea abies and Fraxinus excelsior, in simple paired choice tests.

At all temperatures adult weevils showed a marked and significant preference for P. sylvestris over the other two host plants. F. excelsior was not a preferred host plant and there was some evidence to suggest that at higher temperatures, the presence of F. excelsior inhibited feeding.
Adult weevils consumed up to five times as much food at 20C than they did at 10C, 252.9...

Book Review: Practical Taxonomic Computing.


Eur. J. Entomol. 91 (4): 390, 1994

Pankhurst R.J.: Practical Taxonomic Computing. Cambridge University Press, Cambridge, 1991, 202 pp.

Additional data on variation in the specialized cuticular patches of true bugs in the family Pentatomidae (Heteroptera)


Eur. J. Entomol. 91 (4): 391-405, 1994

In previous papers, the presence of patches of specialized cuticle on the sternites of true bugs of the family Pentatomidae has been reported. The patches, it is thought, are an aid to thermoregulation by aiding heat loss at high temperatures.

In this paper, additional descriptions given of patch patterns in Pentatominae and for the first time in Phyllocephalinae extend the range of variation previously recorded in Pentatomidae.
More than thirty species of Pentatominae in four tribes (Pentatomini, Antestiini, Halyini, Carpocorini) were examined. Patches were extensively developed in African and Asian Halyini. They were absent, however, in...

Description of larvae of the tiger beetle genera Lophyra, Habrodera and Neolaphyra (Coleoptera: Cicindelidae) from Africa


Eur. J. Entomol. 91 (4): 407-418, 1994

Larvae of 4 species of Lophyra, 2 species of Habrodera and one species of Neolaphyra are described. A key to the determination of 2nd and 3rd instars of known larvae of the genus Lophyra is given, and morphological details are discussed in comparison with other Cicindela (sensu auctorum) groups. Larval morphological characters of Cincidela (s. auct.) are variable and often overlapping in different groups. However, it is possible to distinguish the taxa mentioned, which are regarded as separate genera in recent taxonomical concepts.

Idiotrephes maior sp. n., a new species of water bug from Vietnam with morphological notes on I. chinai (Heteroptera: Helotrephidae)


Eur. J. Entomol. 91 (4): 419-428, 1994

A new helotrephid, Idiotrephes maior sp. n. (Helotrephinae: Limnotrephini), is described (male, female) from North Vietnam and compared with the sympatric and widely distributed Oriental species I. chinai Lundblad, 1933. Description of macropterous morph and ovipositor of I. chinai is added to Lundblad's diagnosis of this species. Diagnosis of the genus Idiotrephes is expanded. Some morphological features of this genus are compared briefly with the same of related genera of Limnotrephini and two genera of Helotrephini (Hydrotrephes, Esakiella).

Notes on western Palaearctic species of the Tipula (Yamatotipula) lateralis group, with the description of a new species from Turkey (Diptera: Tipulidae)


Eur. J. Entomol. 91 (4): 429-435, 1994

A review is presented of the species included in the Tipula (Yamatotipula) lateralis group. One of these species, T. (Y.) guentheri sp. n. from eastern Turkey, is described. The subspecies previously recognized within T. (Y.) lateralis are given species rank, viz., T. (Y.) lateralis Meigen, T. (Y.) barbarensis Theowald & Oosterbroek, stat. n., and T. (Y.) iranensis Theowald, stat. n. The three subspecies of T. (Y.) montium are considered to belong to two species, viz., T. (Y.) montium...

Book Review: Catalogue of Palaearctic Diptera, Vol. 1. Trichoceridae - Nymphomyiidae.


Eur. J. Entomol. 91 (4): 436, 1994

Sos ., Papp L. & Oosterbroek P. (eds) 1992: Catalogue of Palaearctic Diptera, Vol. 1. Trichoceridae - Nymphomyiidae. Hungarian Natural History Museum, Budapest, 520 pp.

Revision of European species related to Tricyphona livida (Diptera: Pediciidae)


Eur. J. Entomol. 91 (4): 437-450, 1994

European species of the Tricyphona livida Madarassy group are revised and five species are recognized, viz. T. alpigena (Strobl), T. contraria Bergroth, T. livida Madarassy, T. alticola Strobl and T. schummeli Edwards. Redescriptions of all and a key to species are presented. T. alpigena and T. contraria are reinstated as valid species. Lectotypes of T. contraria and T. alticola and neotype of T. livida are designated. Male and female genitalia are illustrated for all five species.

Revision of the Miocene genus Lithobibio (Diptera: Bibionidae)


Eur. J. Entomol. 91 (4): 451-454, 1994

The fossil Miocene genus Lithobibio Beier, 1952 (containing single species L. styriacus Beier, 1952) is redescribed and synonymized with the genus Bibio Geoffroy, 1762. Bibio styriacus (Beier, 1952) is a new combination.

Eight new species of Ophiomyia from the Czech Republic and Slovak Republic (Diptera: Agromyzidae)


Eur. J. Entomol. 91 (4): 455-476, 1994

Descriptions of eight new species of Ophiomyia (O. orientalis sp. n., O. vimmeri sp. n., O. slovaca sp. n., O. pseudonasuta sp. n., O. moravica sp. n., O. mohelensis sp. n., O. bohemica sp. n. and O. subheracleivora sp. n.) from the territory of the former Czechoslovakia are given. Distinguishing characters are documented by the illustrations including those of the male terminalia and the taxonomic positions of all the new species are briefly discussed. A key to all the European Ophiomyia species is added.

Effect of temperature on the development and voltinism of the rice stem borer, Chilo suppressalis (Lepidoptera: Pyralidae) in Taiwan


Eur. J. Entomol. 91 (4): 477-479, 1994

The effect of temperature on development of populations of the rice stem borer from Hsilo (23.8N), Tounan (23.7N) and Pingtong (22.7N), Taiwan, was investigated. The development rates of these populations increased with increasing temperature from 20 to 30C. The mean developmental periods of eggs, larvae, and male and female pupae in the Hsilo population were 7.7, 33.0, 7.6 and 7.1 days at 25C under 14L : 10D photoperiod and the theoretical threshold temperatures for development were 8.9, 9.2, 10.4 and 10.5C, respectively. Effective temperature sums for development were 124, 521, 111 and 103 day-degrees, respectively. These results suggest in...