TL;DR: Twenty seven new species of Psocomorpha (Psocoptera) from the Malayan Peninsula and Singapore are described and figured, belonging to Epipsocidae, Caeciliidae, Amphipsoc Families, Pseudocaeci- liidae, Myopsocidae and Psocidae.
Abstract: Recent collections of Psocomorpha (Psocoptera) from the Malayan Peninsula and Singapore are enumerated. Twenty seven new species are described and figured, belonging to Epipsocidae (10), Caeciliidae (2), Amphipsocidae (1), Pseudocaeci- liidae (3), Philotarsidae (1), Peripsocidae (4), Myopsocidae (2) and Psocidae (4). Illustrated redescriptions of the types of Epipsocus prominens Banks, E. Hyalinus Banks, E. fumlpennis Banks and Allopsocus marginalia Banks are given. E. Fumlpennls and E. Hyalinus are transferred to Epipsocopsis Badonnel, and Allopsocus Banks placed in the Pseudocaeciliidae. Records are given of 9 other earlier described species, and of unidentified species of Mesopsocidae (1), Caeciliidae (5) and Archipsocidae (1).
TL;DR: After having analysed the most recent literature on Chinese Psocoptera, in particular the important monograph published by Li Fasheng in 2002, the following 174 nomenclatural acts are proposed, as a contribution to stabilize the nomenClature of Chinese PsOCoptera.
Abstract: After having analysed the most recent literature on Chinese Psocoptera, in particular the important monograph published by Li Fasheng in 2002, the following 174 nomenclatural acts are proposed, as a contribution to stabilize the nomenclature of Chinese Psocoptera. New genus names (replacement names for junior homonyms): Lifashengia nom. nov. (Amphientomidae) for Obeliscus Li Fasheng, 2002 nec Beck, 1837, nec Popofsky, 1913, nec Graybill, 1923; Licaecilius nom. nov. (Caeciliusidae) for Neocaecilius Li Fasheng, 2002 nec Li Fasheng, 2000; Fashengocaecilius nom. nov. (Pseudocaeciliidae) for Calocaecilius Li Fasheng, 2002 nec Mockford, 1974; Fashenglianus nom. nov. (Psocidae) for Lativalva Li Fasheng, 2002 nec Amsel, 1956; Lipsocus (Psocidae) nom. nov. for Cyclotus Li Fasheng, 2002 nec Edwards, 1852. New species name (replacement name for junior homonym): Peripsocus lifashengi nom. nov. for P. orientalis Li Fasheng, 2002 nec P. orientalis Garcia Aldrete, 1999 (Peripsocidae). New synonymies: Lachesilla Westwood, 1840 (Lachesillidae) (=Dicrolachesillus Li Fasheng, 2002), Ectopsocus McLachlan, 1899 (Ectopsocidae) (=Ectotrichus Li Fasheng, 2002), Smithersia Thornton, 1992 (Myopsocidae) (=Polygonomyus Li Fasheng, 2002). Re-established synonymies: Heterocaecilius Lee & Thornton, 1967 (Pseudocaeciliidae) (=Orbocaecilius Li Fasheng, 1999), Trichadenotecnum Enderlein, 1909 (Psocidae) (=Trichadenopsocus Roesler, 1943). 43 new combinations are proposed and 30 combinations are re-established. For 19 genus names and 71 species names the correct original spelling is selected. Incorrect subsequent spellings are only mentioned in some particular cases, concerning 25 genus names and 46 species names. Up to the end of the year 2002 a total of about 5470 valid species and 440 valid genera of Psocoptera have been described worldwide. 2600 species (almost half of the known world fauna) have been recorded from Asia, in particular due to the activity of the Chinese entomologist Li Fasheng, who described himself about 1500 of the approximately 1530 species known from China.
TL;DR: Peripsocus nitens produces unusually large communal egg batches, sometimes of more than 300 eggs, and females tend to remain on the batches and return to them after they are disturbed.
Abstract: Peripsocus nitens produces unusually large communal egg batches, sometimes of more than 300 eggs. Females tend to remain on the batches and return to them after they are disturbed. Significance of these observations is briefly discussed.
TL;DR: Karyotypes of eight Psocoptera species are reported for the first time and all the data available on psocopteran karyotypes are tabulated and shortly reviewed.
Abstract: Karyotypes of eight Psocoptera species are reported for the fi rst time. In Va- lenzuela oyamai (Enderlein, 1906) (Caeciliusidae), Peripsocus golubae Lienhard, 2006 (Peripsocidae), Trichopsocus dalii (McLachlan, 1867) (Trichopsocidae), Hemineura dispar Tetens, 1891 (Elipsocidae), and Amphigerontia contaminata (Stephens, 1836) (Psocidae) 2n = 16 + XX/X0. In Elipsocus moebiusi Tetens, 1891 (Elipsocidae) 2n = 12 + XX/X0. Neopsocopsis hitricornis (Reuter, 1893) (Psocidae) has 2n = 14 + XX/ X0, and Kolbia quisquiliarum Bertkau, 1883 (Amphipsocidae) has 2n = 14 + neo-XY/ XX. In addition, three seminal follicles per testis have been established in V. oyamai, H. dispar, A. contaminata, and N. hitricornis and one follicle in P. golubae and T. dalii. All the data available on psocopteran karyotypes are tabulated and shortly reviewed.
TL;DR: In all species meiosis consisted of only a single, mitosis-like maturation division, i.e. meiosis was of apomictic type and models for the formation of polyploid parthenogenetic forms are discussed.
Abstract: A novel method was applied to study chromosomes and their behavior in female meiosis in three parthenogenetic psocid species (Psocoptera). Two of these species Valenzuela flavidus (Steph.), Caeciliusidae and Peripsocus subfasciatus (Rambur), Peripsocidae displayed a triploid chromosome number 3x=27 while the third species Trichadenotecnum majus (Kolbe) was diploid (2n=18). In all species meiosis consisted of only a single, mitosis-like maturation division, i.e. meiosis was of apomictic type. Models for the formation of polyploid parthenogenetic forms are discussed.