EJE, vol. 93 (1996), issue 4

Coloration and pteridine pattern in a new, yolk body mutant of Pyrrhocoris apterus (Heteroptera: Pyrrhocoridae)


Eur. J. Entomol. 93 (4): 525-534, 1996

A yolk body (yb) trait is the sixth body-colour mutation, discovered in P. apterus, affecting the pteridine biosynthesis. It causes a yolk-like coloration of the mutant body, except the eyes which remain red-pigmented, similarly as in wild-type bugs. While the yb homozygous nymphs and very young imagoes are characterized by yolk-pigmentation of epidermal cells, the body, particularly the forewings of older homozygous mutant adults, turn to yolk-orange colour and then become brick-red. The yb trait exhibits complete penetrance and uniform expression in both sexes. Eight different pteridines have been identified in...

Book Review: Chemical Ecology of Insects 2.


Eur. J. Entomol. 93 (4): 534, 1996

Cardé R.T. & Bell W.J. (eds): Chemical Ecology of Insects 2. Chapman & Hall, New York, 1995, 433 pp.

Stimulation of corpora allata by extract from neuroendocrine complex; Comparison of reproducing and diapausing Pyrrhocoris apterus (Heteroptera: Pyrrhocoridae)


Eur. J. Entomol. 93 (4): 535-543, 1996

The effect of extracts from neuroendocrine complexes of brain-suboesophageal ganglion-corpora cardiaca-corpus allatum (NEC) on synthetic activity of corpora allata (CA) in vitro was investigated by a radiochemical assay in Pyrrhocoris apterus. NEC extracts from short-day (diapausing) females and long-day (active) females and males were compared. NEC extracts from both short-day and long-day insects stimulated synthetic activity of the CA from long-day females. The CA from shea-day females were refractory to stimulation. The stimulating activity of the NEC extract was retained after removal of proteins using 10,000-molecular weight limit centrifugal...

Book Review: Hémiptères Coreoidea, Pyrrhocoridae et Stenocephalidae Euro-Méditerranéens.


Eur. J. Entomol. 93 (4): 543-544, 1996

Moulet P.: Hémiptères Coreoidea, Pyrrhocoridae et Stenocephalidae Euro-Méditerranéens. Faune de France (France et Régions Limitrophes) 81. Fédération Française des Sociétés des Science Naturelles, Paris, 1995, 336 pp., 79 groups of Figs, 45 maps, 3 col. plates.

A model to describe the reproductive rate in the aphid Sitobion avenae (Hemiptera: Aphididae): A case study


Eur. J. Entomol. 93 (4): 545-553, 1996

The development of a detailed population dynamics model to simulate changes in grain aphid (Sitobion avenae F.) populations on wheat in field conditions requires the identification of every component of the system. The present study proposes a deterministic model for the fecundity function. An optimality theory is applied here to model aphid reproduction in order to obtain a usable mathematical description of larvae laying rate. This rate is assumed to be mainly dependent on temperature since this effect is commonly observed in poikilothermic organisms. It is taken into account by using a thermodependent physiological time scale for measuring...

Book Review: Return to Resistance.


Eur. J. Entomol. 93 (4): 554, 1996

Robinson R.A.: Return to Resistance. agAccess, Davis, California, 1996, 460 pp. + index.

The influence of the endoparasitic wasp Glyptapanteles liparidis (Hymenoptera: Braconidae) on the growth, food consumption, and food utilization of its host larva, Lymantria dispar (Lepidoptera: Lymantriidae)


Eur. J. Entomol. 93 (4): 555-568, 1996

The influence of parasitism by Glyptapanteles liparidis (Bouché) on the development, consumption, growth and food utilization from the third to the fifth instar of its host Lymantria dispar L. was studied on three different host types, each characterized by the stage in which they were parasitized. The first host type was parasitized during premoult into the 2nd instar, the second during premoult into the 3rd instar and the third during the middle of the 3rd instar.

Depending on the relationship between the host's size and the volume of the parasitoid complex inside the host, different developmental patterns of the various host...

Temperature models for predicting the flight activity of local populations of Cydia funebrana (Lepidoptera: Tortricidae) in Central Europe


Eur. J. Entomol. 93 (4): 569-578, 1996

Temperature models for predicting the flight activity of the plum fruit moth, Cydia funebrana, were developed using male catches in pheromone traps at four locations in the Czech Republic and one in the Slovak Republic. A method of nonlinear regression by means of Richard's formula was used. Total catches of moths from the overwintering and the summer (second) generations were strongly correlated. The regression equation proposed can be used to forecast the expected number of individuals in the summer generation. Whereas the flight curves of the overwintering generation were similar for all populations and years in this study, flight curves...

Colonisation and dispersal patterns of banded (Calopteryx splendens) and beautiful demoiselles (C. virgo) (Odonata: Calopterygidae) in south-east German streams


Eur. J. Entomol. 93 (4): 579-593, 1996

Dispersal behaviour, colonisation and population structure of damsel-fly species were studied in south-east Germany using mark and recapture techniques. The occurrence of damsel-flies at stream sites was correlated with habitat quality, particularly with the stream flow characteristics, riparian vegetation structure and degree of isolation. The damsel-flies had an area specific average dispersal radius of 0.14 to 0.80 km. The maximum dispersal distance observed was 4 km over a 24 h period. Dispersal movements of more than 1 km ranged from 1 to 5% of the population. Dispersal distances depended on habitat quality factors and population density. Movements...

A survey of Mexican Folsomides (Collembola: Isotomidae) with description of three new species


Eur. J. Entomol. 93 (4): 595-606, 1996

Three new Mexican species of Folsomides, F. yucatanicus, F. socorrensis, and F. chichinautzini are described. New locality data on four species, F. angularis, F. centralis, F. parvulus and F. semiparvulus are included.

New Meconematinae (Ensifera: Tettigoniidae) from Thailand


Eur. J. Entomol. 93 (4): 607-616, 1996

The present paper provides descriptions and diagnoses of three new taxa from Thailand: Satunia gen. n., with one species, S. tassirii sp. n., and Alloteratura kuehnelti sp. n. The hitherto unknown male of Xiphidiopsis cryprosticta Hebard, 1922 is described and diagnosed.

Reassessment of the taxonomic position of the fossil aphid family Canadaphididae based on two additional specimens of Canadaphis carpenteri (Hemiptera: Aphidinea)


Eur. J. Entomol. 93 (4): 617-622, 1996

Two additional specimens of Canadaphis carpenteri Essig are described from amber in a primary site in Alberta, about 78 million years old. The rostrum is longer than previously supposed, and as siphuncular pores apparently are present, the family Canadaphididae is placed tentatively in the super-family Aphidoidea.

Description of Philomessor (Attumbrinus) henroti sp. n. from Morocco and notes on P. (A.) bolivari (Coleoptera: Leiodidae: Cholevinae)


Eur. J. Entomol. 93 (4): 623-628, 1996

Philomessor (Attumbrinus) henroti sp. n. from Morocco is described and illustrated. The description of P. (A.) bolivari Jeannel, 1936 is completed and male and female genitalia are also illustrated. A key for the three species in the subgenus Attumbrinus Jeannel, 1936 is provided.

Redescription of adult Bledioschema schweigeri (Coleoptera: Staphylinidae: Oxytelinae) with description of its presumed larva and taxonomic comments


Eur. J. Entomol. 93 (4): 629-639, 1996

The monotypic oxyteline Bledioschema Smetana is widely distributed in the Rhododendron forests of northern Anatolia. The description of its adult characters are complemented, the larval characters are described and the phylogenetic relationships are discussed. Based on adult characters, Bledioschema is more closely related to Aploderus than to Bledius as has been assumed. The larval characters of Bledioschema show a relationship to the Oxytelus-Anorylus-Platystethus lineage.

Book Review: Ecology and Conservation of Butterflies.


Eur. J. Entomol. 93 (4): 640, 1996

Pullin A.S. (ed.): Ecology and Conservation of Butterflies. Chapman & Hall, London, 1995, 363 pp.

Ctenopleuriphora gen n: A remarkable new genus of Phoridae (Diptera) from China


Eur. J. Entomol. 93 (4): 641-644, 1996

A new genus, Ctenopleuriphora, is described for a new species, C. decemsetalis, collected in Hainan, China. The genus shows some resemblance to Phlebothrix and Spiniphora in having more than one pair of dorsocentral bristles and to Psyllomyia in having several hair palisades, but differs from other existing genera in possessing a mesopleural comb.