The evolution of sexual reproduction remains a fascinating enigma in biology. Theoretically, populations of sexual organisms investing half of their resources into producing male offspring that don't contribute to reproduction should grow at only half the rate of their asexual counterparts. This demographic disadvantage due to male production is known as the twofold cost of sex. However, the qu...

Heliothrips similis sp.n. is described as a close relative of the greenhouse thrips, Heliothrips haemorrhoidalis. This is the third species recognized here in the Neotropical genus Heliothrips. A pest species described from South Africa as Heliothrips sylvanus is transferred to a new genus, Neoheliothrips gen.n., as Neoheliothrips sylvanus (Faure) comb.n.

A key is provided to the three Phlaeothripinae genera of the Liothrips-lineage known from Iran, Cephalothrips, Liothrips, and Liophloeothrips. Ataliothrips is placed as a new synonym of Liothrips, and the micropterous morph of L. reuteri described, this morph being unique among species of Liothrips. Illustrated keys are provided to the species of these genera recorded from Iran, all of which ar...

The aerodynamics of flapping flight for the smallest insects such as thrips is often characterized by a 'clap and fling' of the wings at the end of the upstroke and the beginning of the downstroke. These insects fly at Reynolds numbers (Re) of the order of 10 or less where viscous effects are significant. Although this wing motion is known to augment the lift generated during flight, the drag r...

_______________________________________ 237 Introduction _______________________________________ 237 Methods and procedures-------.------.---------238 Acknowledgements. __--___-_-___-_____--________ 239 Geology-__________________________________ 239 Characteristics of the nodules_______________________ 240 Preservation of the fossils-_-__-_-____________________ 241 Age of the fauna_--__-__-__--...

The chilli thrips, Scirtothrips dorsalis Hood, 1919 (Thysanoptera: Thripidae) was reported for the first time in Adana Province, Turkey October, 2020 on blueberries [Vaccinium myrtillus L. (Ericaceae)]. Its heavy infestation detected vegetative parts of blueberries. In this short communication, a brief summary its diagnosis and damage as well economic importance region is provided.

Although thrips are known as inhabitants of flowers, they are also abundant and diverse in other microhabitats. There is an information gap concerning them, especially related to the native fauna in southern Brazil. The structure and composition of the thysanopteran community in different microhabitats was studied at the "Parque Estadual de Itapuã" (30 degrees 22' S 51 degrees 02' W), RS, south...