Abstract
Neoseiulus HUGHES, 1948 is currently one of the largest genus of Phytoseiidae Berlese. Neoseiulus demitei sp. nov., a new species of phytoseiid mite from Rio Grande do Sul State, Brazil, is illustrated and described based on specimens collected on Tibouchina sp. (Melastomataceae) plants. This new species differs from others by having most of propodossomal setae reaching the base of nearby setae and a constriction of ventrianal shield at level of preanal pores. Nevertheless, this new species is the first of the species subgroup kennetti described from Brazil. A key of Neoseiulus species reported in Brazil is also included.
Highlights
Phytoseiidae (Acari: Mesostigmata) is a large family of predatory mites
Neoseiulus demitei sp. nov., a new species of phytoseiid mite from Rio Grande do Sul State, Brazil, is illustrated and described based on specimens collected on Tibouchina sp. (Melastomataceae) plants
This new species differs from others by having most of propodossomal setae reaching the base of nearby setae and a constriction of ventrianal shield at level of preanal pores
Summary
The mites were collected from leaves of Tibouchina sp. (Melastomataceae), observed under a binocular microscope, mounted on glass slides in Hoyer’s medium and observed under a phase contrast microscope Leica® DM 750. The setal nomenclature is that of ROWELL et al (1978) and CHANT & YOSHIDA-SHAUL (1992) for the dorsal and ventral surfaces of the idiosoma, respectively. Measurements are given in micrometers (μm), holotype measurements are shown in bold type followed by their mean and range within parentheses. Idiosomal setal pattern (CHANT & YOSHIDA-SHAUL 1992): 10A:9B/JV-3:ZV. Dorsum (Fig. 1): dorsal shield smooth, with a few striae anterolaterally; 6 pairs of lyrifissures and 9 pairs of pores, 367 363 (355-370) long and 227 224 (215-230) wide. All setae smooth and sharp-tipped, except Z5 slightly serrate. Venter (Fig. 2): sternal shield smooth, with three pairs of setae and two pairs of lyrifissures, seta St4 set on distinct metasternal shields; distances between St1-St3 67 64 (61-67), St2-St2 67 66 (65-67). 2014 Sociedade Brasileira de Zoologia | www.sbzoologia.org.br | www.scielo.br/zool All content of the journal, except where identified, is licensed under a Creative Commons attribution-type BY-NC
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