Six new species of Elaphopsocus Roesler from Brazil and Colombia are described and illustrated. Revised generic diagnoses are provided for Elaphopsocoides and Elaphopsocus; based on the structure of the male hypandrium and phallosome three species groups are recognized in Elaphopsocus.

Seven species of Colombian Euplocania, are here described and illustrated, they increase to 16 the number of species in the genus, eight of which are endemic to Colombia. A new species group is also described.

Two specimens of Psyllipsocus yucatan with black wings were found with normal individuals of this species on guano piles produced by the common vampire bat Desmodus rotundus. These specimens have both pairs of wings dorsally and ventrally covered by a black crystalline layer. They did not exhibit any signs of reduced vitality in the field and their morphology is completely normal. This ultrathi...

Clematoscenea spinosus sp. n. is described and illustrated as the second species of this genus from China, and an English redescription of C. yunnanica Li is provided. Updated keys are given to the known species, together with distributional data.

Little is known about the ground-dwelling arthropod diversity in tropical montane cloud forests (TMCF). Due to unique habitat conditions in TMCFs with continuously wet substrates and a waterlogged forest floor along with the innate biases of the pitfall trap, Berlese funnel and Winkler extractor are certain to make it difficult to choose the most appropriate method to sample the ground-dwelling...

The mitochondrial (mt) genomes of animals typically consist of a single circular chromosome that is approximately 16-kb long and has 37 genes. Our analyses of the sequence reads from the Human Body Louse Genome Project and the patterns of gel electrophoresis and Southern hybridization revealed a novel type of mt genome in the sucking louse, Pediculus humanus. Instead of having all mt genes on a...