EJE, vol. 93 (1996), issue 2

Physiological relationships between insect diapause and cold tolerance: Coevolution or coincidence?


Eur. J. Entomol. 93 (2): 121-129, 1996

It is argued that the relationship between diapause and cold tolerance has been obscured by the complexity of these strategies. If cold tolerance is broken down into its component mechanisms a relationship between diapause related metabolic suppression and carbohydrate cryoprotectant synthesis is supported by an increasing number of studies. This link seems to have been overlooked because of the view that temperature is the primary cue for cryoprotectant synthesis. However, some major studies cited in support of the latter view have not rigorously tested the role of diapause. An evolutionary analysis of the relationship suggests that diapause-related...

Book Review: ITSM: An Interactive Time Series Modelling Package for the PC.


Eur. J. Entomol. 93 (2): 130, 1996

Brockwell P.J. & Davis R.A.: ITSM: An Interactive Time Series Modelling Package for the PC. Springer-Verlag, Berlin-Heidelberg, 1991, ix + 104 pp.

Studies on the size of corpora allata, the juvenile hormone III titre in the haemolymph and growth of terminal oocytes throughout three consecutive gonadotropic cycles in Eyprepocnemis plorans (Orthopteroidea: Caelifera: Acrididae)


Eur. J. Entomol. 93 (2): 131-143, 1996

The effects of factors controlling reproduction in Eyprepocnemis plorans (Charpentier) were investigated under laboratory conditions addition to reproductive parameters, such as pre-oviposition period, number of egg-pods per female and growth of oocytes, changes in the volume of the corpora allata (CA), the juvenile hormone (JH) titre in the haemolymph, and the increase of the terminal (t) oocytes were studied through three consecutive gonadotropic cycles. E. plorans was reared successfully under laboratory conditions and the fecundity was compared with other species of Acrididae.

No correlation was found between the volume of...

Book Review: Ecological Principles of Nature Conservation (Conservation Ecology Series: Principles, Practices and Management).


Eur. J. Entomol. 93 (2): 144, 1996

Hansson L. (ed.): Ecological Principles of Nature Conservation (Conservation Ecology Series: Principles, Practices and Management). Elsevier Applied Science, London & New York, 1992, xviii + 436 pp.

Estimation of the rate of inbreeding in a natural population of Adalia bipunctata (Coleoptera: Coccinellidae) using a phenotypic indicator


Eur. J. Entomol. 93 (2): 145-150, 1996

The rate of inbreeding is an important parameter in the population and evolutionary genetics of a species. Accurate measurement of the rate of close inbreeding can be gained through the use of DNA fingerprinting; however, this is both labour intensive and expensive. We here provide a more approximate measure of the rate of close inbreeding in Adalia bipunctata, utilising the unusual phenotypic effect of inbreeding, the production of eggs which develop but fail to hatch, which is seen in this species. Examination of the incidence of grey eggs in known outbred and inbred laboratory crosses and comparison to their incidence in wild-collected clutches...

The influence of plant structure on searching behaviour in the ladybird, Scymnus nigrinus (Coleoptera: Coccinellidae)


Eur. J. Entomol. 93 (2): 151-160, 1996

The foraging behaviour of all developmental stages of the ladybird, Scymnus nigrinus, when searching for its prey, Schizolachnus pineti, on pine trees was examined. Foraging was characterized by a high inter-individual variability but patterns did not differ significantly between larvae and adults. All stages spent most of their time searching on needles, on which their prey feeds, and remained mainly in the upper and outer parts of the plant which have a higher needle density in comparison with the interior plant parts. Older stages showed a higher voracity than those younger, but all had a similar predation success when attacking an...

Oviposition-deterring pheromone in Chrysopidae (Neuroptera): Intra- and interspecific effects


Eur. J. Entomol. 93 (2): 161-166, 1996

Substrates contaminated with abdominal secretion of first instar larvae of Chrysopa oculata Say or Chrysopa perla (L.) deter females of these species from ovipositing. The intra- and interspecific responses of the females were similar, however, the smaller species, C. oculata, showed a stronger response overall. Although marking with oviposition-deterring pheromone is independent of encounters with conspecific larvae, the contamination of a paper substrate by crowded larvae increases a female response. The increase in response may be due either to the quantity of the pheromone secretion or the amount of marking or both.

Post-moulting behaviour associated with Malpighian tubule secretions in leafhoppers and treehoppers (Auchenorrhyncha: Membracoidea)


Eur. J. Entomol. 93 (2): 167-184, 1996

The acts of excreting special fluids containing the secretory products of the Malpighian tubules and smearing them onto the cuticle, referred to as anointing, were observed after moult in 12 species of subfamilies Cicadellinae, Typhlocybinae, Iassinae, Deltocephalinae, Idiocerinae, Macropsinae, Agalliinae, Ulopinae (Cicadellidae) and in Gargara genistae (F.) (Membracidae). Among the species studied anointing was not recorded in Idiocerinae nymphs and in adults of Iassus lanio (L.) only. Usually the first act of anointing was observed 1-3 hours after moulting. Nymphs of Oncopsis, Macropsis, Agallia, Ulopa and...

Temperature threshold for growth and temperature-dependent weight gain of field-collected Tipula montana (Diptera: Tipulidae)


Eur. J. Entomol. 93 (2): 185-194, 1996

Tipula montana, an upland tipulid of northern Britain and generally considered a montane species, was collected from the northern heath habitat of Waskerley Common, County Durham. The growth rate of larvae of Tipula montana was monitored at temperatures ranging from 1°C to 15°C at long photoperiod of 18 h light and 6 h dark. There was no significant growth at 5°C. At 7°C and above, the growth rate increased significantly in larvae initially in instars II and m. However, the growth rate of larvae initially in instar TV was unaffected by temperature, probably due to nearing the onset of pupation. 7°C is the minimum mean monthly temperature...

A comparison of three methods of trapping saproxylic beetles


Eur. J. Entomol. 93 (2): 195-209, 1996

A high trapping efficiency was found both for window traps and trunk window traps, while the efficiency of extraction cylinders was low. Trunk-window traps are suitable for comparison of different substrates within the same forest environment, while comparative studies of different forest environments are more difficult, due to baiting effects. Window trap captures are more suitable for comparing different forest environments, but are related to ecological conditions over wide areas, and are almost unaffected by substrate conditions in the near surroundings of the traps.

Book Review: Riceland Spiders of South and Southeast Asia. 


Eur. J. Entomol. 93 (2): 210, 1996

Barriton A.T. & Litsinger J.A.: Riceland Spiders of South and Southeast Asia. CAB International in association with the International Rice Research Institute. University Press, Cambridge, 1995, xix + 700 pp., 414 figures, 339 maps, 16 colour plates.

Morphology and protein pattern of the accessory reproductive glands of male Blattella germanica (Dictyoptera: Blattellidae)


Eur. J. Entomol. 93 (2): 211-221, 1996

The basic function of the accessory reproductive glands (ARG) of male insects is to provide materials for the production of the spermatophore. The morphology of the ARG of Blattella germanica, including the ejaculatory pouch and duct, the uricose glands, the utricles of the mushroom-shaped body, and the conglobate gland are described. Special attention is given to the fine discrimination of the different tubules associated with the ARG, particularly in the mushroom-shaped body, where up to 12 types of tubule have been recognized. The analysis considered not only morphology and biometry, but also protein pattern. The remarkable diversity found...

Book Review: The Economics of Non-Human Societies.


Eur. J. Entomol. 93 (2): 222, 1996

Tullock G.: The Economics of Non-Human Societies. Pallas Press, Tuscon, 1994, 87 pp.

Revision of the fossil ''mantid'' and ''ephemerid'' species described by Piton from the palaeocene of Menat (France) (Mantodea: Chaeteessidae, Mantidae; Ensifera: Tettigonioidea)


Eur. J. Entomol. 93 (2): 223-234, 1996

Some fossil insects from the Palaeocene of Menat (France), described by Piton as Mantodea, but also Ephemeroptera are revised. The presence of the Neotropical mantid family Chaeteessidae in the Palaeocene of France, inferred by Gratshev & Zherikhin, is confirmed. The presence in Menat of the mantid family Empusidae was an error of interpretation. The order Ephemeroptera is represented only by an undescribed nymph. Biogeographic implications are discussed briefly.

Cecidopsylla sinensis sp. n., a new species of jumping plant-lice from China and Hong Kong (Hemiptera: Psylloidea: Calophyidae)


Eur. J. Entomol. 93 (2): 235-237, 1996

Cecidopsylla sinensis sp. n. is described and illustrated from specimens collected in Canton and Hong Kong. The new species is closely related to Cecidopsylla schimae Kieffer and C. horakae Burckhardt, from which it differs in the shape of the male and female terminalia.

Book Review: True Bugs of the World (Hemiptera: Heteroptera): Classification and Natural History.


Eur. J. Entomol. 93 (2): 237-238, 1996

Schuh R.T. & Slater J.A.: True Bugs of the World (Hemiptera: Heteroptera): Classification and Natural History. Cornell University Press, Ithaca and London, 1995, 336 pp., 178 b&w illus. Hardback.

Symydobius nanae sp n (Sternorrhyncha: Aphidoidea: Aphididae) and other aphids living on Betula nana in the İumava National Park, Czech Republic


Eur. J. Entomol. 93 (2): 239-248, 1996

Two host-specific and 3 oligophagous aphid species are recorded from Betula nana L. in southern Bohemia. Symydobius nanae sp. n. (apterous viviparous female, ovipara and male) is described and its intraspecific variation is compared with that of S. oblongus (von Heyden). New morphological data on Calaphis arctica Hille Ris Lambers are presented, which possibly differentiate the Greenland and the Central European populations of this species. A key is given to European Calaphis spp. Occasionally, summer generations of Calaphis flava Mordvilko reproduce on B. nana, whereas it is possible that Calaphis...

Redescription of Aphis popovi and its relations with other Palaearctic species of the genus Aphis inhabiting Ribes (Hemiptera: Aphidoidea: Aphididae)


Eur. J. Entomol. 93 (2): 249-254, 1996

The fundatrix of Aphis popovi Mordvilko, 1932 is redescribed and lectotype designated. Morphometric analysis of Aphis popovi Mordvilko, A. schneideri (Börner) and A. triglochinis Theobald fundatrices showed similarity of A. popovi to A. schneideri and of A. popovi sensu Szelegiewicz nec Mordvilko to A. triglochinis. A key to fundatrices of Ribes-inhabiting Palaearctic species of the genus Aphis L. is presented.

The first species of Myrocheini (Hemiptera: Pentatomidae: Pentatominae) from the Palaearctic region


Eur. J. Entomol. 93 (2): 255-262, 1996

Lodosia Ahmad & Önder, gen. n., and Lodosia gonocoxa Ahmad & Önder, sp. n. are described. The single female specimen was collected some 900 km east of Ankara, Turkey, and is the westernmost representative of the pentatomine tribe Myrocheini; it is distinguished in particular by the raised tips of both pairs of the gonocoxae. Our cladistic hypothesis is that Laprius Stål is the sister group of Lodosia, and that Dollingiana Ahmad & Kamaluddin is the sister group of Lodosia + Laprius. The three genera all have remarkably wide interocular distances; and Lodosia and Laprius...

Chironomid midges of Harnischia complex (Diptera: Chironomidae) from the Duars of the Himalayas, India


Eur. J. Entomol. 93 (2): 263-279, 1996

Adults collected in the Duars of the Himalayas of West Bengal (India) belong to five genera of the Harnischia complex. Four species, Cryptochironomus curryi Mason, C. ramus Mason, Demicryptochironomus vulneratus (Zetterstedt), and Harnischia curtilamellata (Malloch) are recorded for the first time from India, and four species, Cryptochironomus acuminatus, C. gracilis, Harnischia minuta and Paracladopelma diutinistyla are described as new. A key to the Indian species of Cryptochironomus Kieffer is presented. The female of Cryptochironomus subovatus Freeman, hitherto unknown,...

Book Review: Australian Sciapodinae (Diptera, Dolichopodidae) with a Review of the Oriental and Australasian Faunas, and a World Conspectus of the Subfamily.


Eur. J. Entomol. 93 (2): 280, 1996

Bickel D.J.: Australian Sciapodinae (Diptera, Dolichopodidae) with a Review of the Oriental and Australasian Faunas, and a World Conspectus of the Subfamily. Records of the Australian Museum, Sydney, 1994, Supplement 21: 394 pp.