Contribution to the study of the biology of soil-dwelling Dipteran larvae (insecta, diptera) of the desert zone

The composition of seven dipteran families from the complex of larvae dwelling in sandy soils of the southeastern Karakum Desert, represented by both free-living soil forms and endobionts ecologically dependent mainly on herbaceous plants, is analyzed. In the surface horizons of the soil, at a depth of up to 20 cm, free-living soil-dwellers form a stable complex, which includes saprophagous coleopteran larvae and their constant companions, the obligatorily predaceous dipteran larvae. Previously unknown data on the lifestyle of the larvae of five therevid genera are given.     

The first record of the shore fly Paracoenia fumosalis (Diptera, Ephydridae) in the Palaearctic region

Paracoenia fumosalis Cresson previously known only from the USA and Canada is recorded in the Palaearctic Region for the first time. The adults were collected near a thermal hydrosulfuric spring in the Geiser Valley in Kamchatka. A key to species of the genus Paracoenia occurring in Russia is given.     

Dynamics of the X-sex chromatin in the buccal epithelial cells of pregnant women with rhesus-negative blood

The content of X-sex chromatin was studied in the buccal epithelial cells of pregnant women with Rh-negative blood. It was found that in women with a titer of Rh antibodies the amount of cells with X-sex chromatin decreases. A clinical-cytological correlation in the mother-placenta-fetus system was traced in pregnant women with a Rh antibody titer.     

Morpho-ecological characteristics of the xylobiont larvae of the genus Phaonia Robineau-Desvoidy, 1830 (Diptera, Muscidae) with a description of the larva of Ph. canescens Stein, 1916

The first data on the biology and morphology of the larva and puparium of Phaonia canescens Stein, with additional data on Ph. exoleta (Meig.) and Ph. cincta (Zett.), are given. Keys to the larvae and puparia of the three species studied are compiled.     

Analysis of the species composition of the genus <Emphasis Type="Italic">Chrysopilus</Emphasis> (Diptera,Rhagionidae) in the Eastern Palaearctic Region

The species of the genus Chrysopilus, inhabiting Russia and adjacent territories, are analyzed for the first time. The structure of the genitalia is examined, and new diagnostic characters of the species are given. Some species from the boundary areas are considered in detail, since the species composition of the genus has been poorly studied there. The data on 11 species distributed in eastern Russia and Japan are given.     

On insect feeding on cyanobacteria

A review of 19 dipteran species of the families Chironomidae, Ceratopogonidae, and Ephydridae, feeding on cyanobacteria, which are toxic to the majority of other animals, is given. Certain aspects of biology and evolution of the family Ephydridae, allowing them to utilize this food source, are discussed.     

Morpho-ecological characteristic of immature stages of the genus Mydaea (Diptera,Muscidae)

The main characters of immature stages are considered in representatives of the genus Mydaea Rob.-Desv. High similarity of these characters to those of species of the genera Phaonia Rob.-Desv. and Myospila Rond. is emphasized. The immature stages of Mydaea ancilla (Meig.), M. corni (Scop.) and M. setifemur Ringd. are described in detail; the new data are compared with those previously published.     

Results of studying the types of species of the genus Chrysopilus (Diptera, Rhagionidae) from the collection of the Natural History Museum of the Humboldt University (Berlin, Germany): Communication 3

Communication 3 presents the results of studying the types of Chrysopilus auratus (Fabr.), Ch. aureus (Meigen), Ch. aureus meridionalis Bezzi, Ch. splendidus (Meigen), and Ch. luteolus (Fallén). Two new species, Ch. subauratus sp. n. and Ch. subsplendidus sp. n., are described. The results of examination of 19 species of the genus are given.