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This paper presents a list of the species, the host plants and distribution of eriophyoid mites on bamboo in the world. Seventy-two eriophyoid species from 32 genera, associated with bamboo species from 13 genera, are listed. Twelve of the reported species belong to Diptilomiopidae and 60 to Eriophyidae. Two new species of eriophyoid mites on bamboo from Yunnan and Hunan Provinces of China are described and illustrated: Calacarus bambusissp. nov. on Bambusa sp. (Poaceae) and Tetra tessellasp. nov. on Indocalamus tessellatus (Munro) Keng f. (Poaceae). Both species are vagrants on leaf surfaces, causing no apparent damage. [ABSTRACT FROM AUTHOR]

Deju basalts is a characteristic volcanic association and was first founded in the 1 : 50 000 regional geological survey. There is no previous study. The basalts' characteristics and genesis are systematically studied from the geochemistry. It is showed that the basalts's w(SiO2) = 50.61‒54.54%, w(K2O + Na2O) = 0.15‒5.96%, w(P2O5) = 0.18‒0.45%, w(TiO2) = 1.82‒3.58%, belong to sub alkaline basalt series. Chondrite-normalized REE patterns indicate the basalts are relatively rich in LREE but deficient in HREE (LREE/HREE = 5.81‒6.51), and have a similar mantle source with WPB and OIB. The mantle source have a characteristics of GP. The discrimination diagrams of basalt tectonic setting reflect the basalts in Deju belongs to continental intraplate basalt, formed in a continental rift stretching environment, and during the diagenesis process, the magma source was contaminated by the crust and oceanic crust subducted materials. [ABSTRACT FROM AUTHOR]

A new lycopsid megaspore species with intricate ornamentation, Flabellisporites zhaotongensis Sui, McLoughlin et Feng sp. nov., is described from the Lopingian Xuanwei Formation of Yunnan Province, Southwest China, using scanning and transmission electron microscopy. This trilete megaspore is characterized by elevated membraneous flanges adorned with multifurcate spines, the longest of which are discrete ribbon-like appendages that basally converge to form a membrane around the equator; and evenly spaced single or bifurcate spines with sharp tips covering the remaining surfaces. Ultrastructural analysis reveals that the megaspore wall consists of four layers: (1) a thin and dense foot layer; (2) an inner spongy layer with small circular or elongate sporopollenin grains with parallel arrangement; (3) an outer, more porous, spongy layer consisting of larger and better interconnected sporopollenin units, that form a grid-like structure in certain cases; and (4) an electron-dense outermost layer forming the sculptural elements. Both morphological and ultrastructural characteristics indicate that the new megaspore species belongs to Isoetales. Our discovery represents the oldest occurrence of Flabellisporites , indicating the origin of this morpho-lineage before the end-Permian mass extinction, and enriches the known diversity of isoetalean lycopsids in the late Permian Cathaysian Flora. • A new lycopsid megaspore species of Flabellisporites is described from the upper Permian of Southwest China. • This is the first record of Flabellisporites from upper Paleozoic strata. • Morphology and ultrastructure indicate the new megaspore species belongs to Isoetales. [ABSTRACT FROM AUTHOR]

In this paper, three new species of the genus Leipothrix from China are described and illustrated: Leipothrix houttuyniae sp. nov. on Houttuynia cordata Thunb. (Saururaceae), Leipothrix rubicordis sp. nov. on Rubia cordifolia L. (Rubiaceae), Leipothrix sambucus sp. nov. on Sambucus javanica Blume (Adoxaceae). All are vagrants causing no apparent damage to their host plants. A key to species of Leipothrix in China are provided. [ABSTRACT FROM AUTHOR]