frost occurrence during plant growth created special conditions to evaluate the effects of planting date on dry matter content and agronomical characteristics of potato cultivars influenced by natural frost in field conditions. a split-plot experiment with three replications was carried out to compare three planting dates, as main plot, from 1 to 21 november with 10 day intervals and four culti...

The genus Megagraphydrus Hansen, 1999 is revised. Eleven of the twelve previously described species are recognized as valid, with Megagraphydrus wangi Hebauer, 2000 syn. nov. found to be a junior synonym of M. politus Hansen, 1999. Most significantly, Megagraphydrus itself is found to be a junior synonym of Agraphydrus Régimbart, 1903. The species are assigned to the subgenus Agraphydrus. This ...

Cercosporoid fungi (former Cercospora s. lat.) represent one of the largest groups of hyphomycetes belonging to the Mycosphaerellaceae (Ascomycota). They include asexual morphs, asexual holomorphs or species with mycosphaerella-like sexual morphs. Most of them are leaf-spotting plant pathogens with special phytopathological relevance. The only monograph of Cercospora s. lat., published by Chupp...

The ant genus Octostruma is restricted to the Neotropics, where it is an inhabitant of forest leaf litter and soil. The genus is reviewed, with an emphasis on the fauna of the MesoAmerican corridor. A total of 34 species are recognized, of which 19 are described as new. A key to species is provided, and the following new species are described: O. ascrobicula Long-ino, sp. nov., O. ascrobis Long...

We present a review of the Chinese species of the genus Ypsolopha Latreille. Of the 60 species treated herein, 21 species are described as new: Y. flaviterminata sp. nov., Y. flavida sp. nov., Y. albula sp. nov., Y. longisaccata sp. nov., Y. fascimaculata sp. nov., Y. mucronulata sp. nov., Y. bicostata sp. nov., Y. latiuscula sp. nov., Y. purpurata sp. nov., Y. minuta sp. nov., Y. allochroa sp....

Six new species of Oryssomus are described: O. calix sp. nov., O. guillermo sp. nov., O. guyanensis sp. nov. and O. rhombus sp. nov., from French Guiana; and O. paschoali sp. nov. and O. rogeri sp. nov., from Brazil. Four new species of Pseudoryssomus are described: P. brulei sp. nov., P. crucifer sp. nov., P. triangulus sp. nov., from French Guiana; and P. rufomarginatus sp. nov., from Trinida...

The 29 species of the subfamily Agromyzinae in Thailand are revised, among these 13 species are described as new to science: Melanagromyza ancyla sp. nov., M. catalexis sp. nov., M. cirrappendicula sp. nov., M. lunulata sp. nov., M. macilenta sp. nov., M. multistriata sp. nov., M. pandiculata sp. nov., M. sexseriata sp. nov., M. spinuliloba sp. nov., M. turgida sp. nov., Ophiomyia flagellata sp...

Terrestrial and aquatic gastropods from the upper Eocene (Priabonian) Zalumah Formation in the Salalah region of the Sultanate of Oman are described. The assemblages reflect the composition of the continental mollusc fauna of the Palaeogene of Arabia, which, at that time, formed parts of the southeastern Tethys coast. Several similarities with European faunas are observed at the family level, b...

An unusual new cicadellid genus, Ulopsina gen. nov. and two new species, U. sinica sp. nov. and U. szwedoi sp. nov. from China are described, illustrated, and placed in the subfamily Ulopinae. The genus has characters of both the tribes Mesargini and Coloborrhinini, suggesting that the delimitation of these tribes may not be natural. The tribal placement of Ulopsina is uncertain. A checklist of...

Altogether 24 species of ptyctimous mites were found in sifting litter samples from the Cameroon. Twelve new species of the ptyctimous mites, Indotritia montkoupensis sp. nov., Acrotritia furca sp. nov., Acrotritia quasidivida sp. nov., Hoplophthiracarus kumboensis sp. nov., Hoplophthiracarus reticulatus sp. nov., Hoplophthiracarus spinus sp. nov., Steganacarus (Rhacaplacarus) quaternarius sp. ...