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A morphological study of S. boneti (Parisi, 1972) and its intraspecific variation is presented, providing a complete description with drawings, and photos. New records for this and other species are given. [ABSTRACT FROM AUTHOR]

Springtails (Collembola) from two temperate forest sites, "Ejido Los Búfalos" (LB) and "Bosque Mágico de Piedra Canteada, Santuario de la Luciérnaga" (PC), in Tlaxcala state, central Mexico, were sampled monthly with Malaise traps. More than 38,000 specimens from 10 species were collected and studied. Although abundance values between both study sites were highly different, no significant effect of locality and sampling date was found according to a two-way ANOVA unbalanced test because of the high variance between recorded data. Shannon's diversity index for LB was H'=0.61 and for PC was H'=1.08, with a significant difference in diversity between both sites. The most abundant springtails were Entomobryidae: Seira sp. (n=21,091 individuals in LB and n=6,424 in PC), Americabrya arida (6,214 and 2,860), and Willowsia mexicana (19 and 852); few Neanuridae: Pseudachorutes (241 and 169); Isotomidae: Isotoma (2 and 3); Katiannidae: Polykatianna (36 and 28); and Tomoceridae: Pogonognathellus flavescens (45 and 93). Two genera were only found at PC, Dicyrtomidae: Ptenothrix (31) and Entomobryidae: Lepidocyrtus (4). This is the first study to record abundance values of these high magnitudes for springtails captured with Malaise traps. Results are compared with previous studies at Mexican and French localities, respectively; Entomobryidae was the most abundant family captured with this method. [ABSTRACT FROM AUTHOR]

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Scapheremaeus dirzoius sp. nov. lives on the canopy of trees of Astrocaryum mexicanum Liebm. ex Mart (Arecaceae) and Guarea glabra Kunth (Meliaceae) in the tropical rainforest of Los Tuxtlas, Veracruz, it is similar to S. flamiferus Palacios-Vargas and Ríos, 1998, which lives on epiphytic Tillandsia (Bromeliaceae) from Nicaragua. They differ in the cuticular ornamentation, and the notogastral and ventral chaetotaxy, the new species has only 9 pairs of dorsal setae and 2 pairs of adanal setae versus 10 and 3 pairs in the Nicaraguan species. [ABSTRACT FROM AUTHOR]

A modification of the diagnosis of the genus Sensillanura Deharveng, 1981 is done and redescriptions of three of its species are presented: S. barberi (Handschin, 1928), S. bullsa (Wray, 1953), and S. caeca (Folsom, 1916). A comparison among the members of the genus is done and a key for the species is presented. [ABSTRACT FROM AUTHOR]

Temporal distribution of springtails was studied in four plant associations of in a semi - arid zone of Zacatecas, using yellow pan traps as collecting method. Sampling was carried out during 5 months (June to October) of 2009 in four zones with different vegetation: izotal, cultivated nopalera, wild nopalera and corn crop. The results obtained allow us to evaluate the efficiency of this methodology. Although this is not the traditional technique edaphic microarfthropod studies, a total of 7,230 springtails (of 17 species) were obtained. We also present the abundance and diversity data at each site, and a comparison among them and the monthly variation. This is the first time that the systematic study of springtails of an izotal and associated crops like nopaleras and of season corn crop is presented. [ABSTRACT FROM AUTHOR]

A new species of Sminthurinus is described and illustrated. The new species is unique because it has four small spines in posterior part of the head and 6-7 tenent hairs on each tibiotarsus. A key for the identification of the Central and South American species of the genus is also provided. [ABSTRACT FROM AUTHOR]