[Attempted classification of the Rhinonyssidae (Acari: Mesostigmata) with description of two new genera].
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Three new genera, Natalimyobia n. gen., Furipterobia n. gen., and Mizopodobia n. gen., are erected for the myobiid mites associated with the chiropteran families Natalidae, Furipteridae, and Myzopodidae, respectively. The definitions for the genera Nycterimyobia, Thyromyobia, and Mystacobia, previously known only from one sex, are refined with the description of the opposite sex. Two different types of myobiid genera, one being represented by larger elongate forms and the other by smaller rounded forms, often share hosts within a chiropteran family. A larger elongate myobiid genus is associated exclusively with each chiropteran family. Phylogenetic relationships among 16 larger-sized myobiid genera, including the 3 new ones, are deduced based primarily on the structure of female genitalia and secondarily on the formation of legs and chaetotaxy of idiosoma and legs. These relationships are regarded as being parallel to those of the chiropteran host families.
Two new genera of the lepocreadiid trematodes, Gibsonia gen. n., (type species--G. hastata sp. n.) from Macrourus carinatus Günther, 1878 (Macrouridae), collected in the Falkland Islands area, and Muraenolepitrema gen. n. (type species--M. magnatestis sp. n.) from Muraenolepis microps Lönnberg, 1905 (Muraenolepidae), collected in the South Georgia Island area, are described. Gibsonia gen. n. differs from all known genera of the family Lepocreadiidae by unusual body shape divided into 2 parts, suctorial formations, great number of glandular cells and a muscular bulge of the body sides; it differs from the closely related genus Lepidapedon by separate genital pores. Muraenolepitrema gen. n. differs from Myzoxenus by bursa shape, separate genital pores, lobed shape of genital organs.
Three new genera and four new species of omomyid primates constitute the first record of the Primates from upland middle Eocene rocks of Wyoming. One of these, Strigorhysis, gen. nov., possesses broadly basined molars with highly crenulated enamel which probably indicates a good deal of tough vegetable matter in its diet. Each of the new genera could have descended from known Wasatchian or early middle Eocene anaptomorphines: Aycrossia, gen. nov., is a plausible derivative of Tetonius or Chlororhysis; Strigorhysis, gen. nov., is most similar to Absarokius noctivagus; and Gazinius, gen. nov., most closely resembles Absarokius and Anaptomorphus. The anaptomorphines were probably equally as diverse as the better documented omomyines in the middle Eocene, but may have preferred upland environments at the margins of the Tertiary basins of the Rocky Mountain Interior.
The revised family Dilepididae contains 102 valid genera, 11 new genera included (Bona 1994 a,b, in press). The synonyms, old and new ones, and the sub-genera raised to generic rank are 41. The revision of the family was undertaken as a contribution to the "IIP Keys to the Cestode Parasites of Vertebrate" and with the intention to provide new elements for future suprageneric systematics of the group.
Microsporidia parasitizing the adipose body of mosquito larvae of Anopheles beklemishevi and Aedes punctor has been studied. Two new genera of microsporidia are described based on lightmicroscopic and ultrastructural characteristics of spores and sporogony stages. The spore wall of Crepidula beklemishevi gen. n. et sp. n. is formed by two-membrane exospore, thick exospore, bilayer endospore and thin plasmolemma. Spores with single nucleus, polar filament anisofilar, with 6-7 coils (2+ 4-5), polaroplast consisting of three parts: macrochelicoidal, microhelicoidal and lamellar. Fixed spores 4.2 +/- 0.22 x 2 +/- 0.01 microns. The sporogony of Dimeiospora palustris gen. et. n. results in spore formation of two different types. Spores of the first type are oviform, with thick wall, single-nuclear, 6.1 x 4.9 microns. Spore wall with three layers, about 370 nm. Exospore electron-dense, subexospore moderately electrondense. Exospore and subexospore irregularly pleated on the almost spore surface and slightly thinner on anterior end only. Endospore electron-translucent. Polar filament anisofilar, with 9 coils (3 + 6). Polaroplas consists of three parts: lamellar, fine bubbled, and coarse bubbled. Spores of the second type broad-ovate, with apical pole narrower, distal pole concave, 4.6 x 3.7 microns. Spore wall with three layer, 355 nm. Exospore on the apical end irregularly pleated, consists of thin electrondense exospore, subexospore of variable electron density, endospore electron-translucent. Polar filament anisofilar, with 13 coils (3 + 10). Polaroplast has two parts: lamellar and vesicular.
In order to facilitate the discovery of novel bioactive compounds from microorganisms, various techniques for isolation of new actinomycete strains have been attempted. Studies of the vertical distribution of actinomycetes in soil, isolation of actinomycetes from desert soils or fallen leaves, selective isolation of Kitasatospora strains using novobiocin or Actinoplanes strains using the chemotactic method, and the use of gellan gum as a solidifying agent were carried out. We discovered 9 novel bioactive compounds from actinomycete strains isolated under unusual conditions, and proposed two new genera, five new species and one new subspecies.