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Characterization of the internal reproductive organs and their state as diapause indicator in Phytalus sanctipauli Blanchard, 1850 (Coleoptera, Scarabaeidae)

The internal reproductive organs of females and males of Phytalus sanctipauli are described and illustrated and the state of diapause in this species, in Coxilha, RS, Brazil, is characterized.
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Chromosome studies in southern Brazilian wheat pest aphids Sitobion avenae, Schizaphis graminum, and Methopolophium dirhodum (Homoptera: Aphididae)

We examined the chromosome set of the aphid species Sitobion avenae, Schizaphis graminum and Methopolophium dirhodum by means of conventional staining and C, NOR, AluI and HaeIII banding methods.…
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LONGEVITY, FECUNDITY AND EMBRYOGENESIS IN BRAZILIAN APHIDS'

When the fecundily/longevity ratio was compared it was concluded that S. graminuni was dangerous lo wheal, and BR-35 wheal strain was most susceptible to aphid control.

Discrimination and comparison of three wheat aphid species based on isoenzyme patterns (Homoptera: Aphididae)

Morphometric observations on three populations of Schizaphis graminum (Rondani), a main wheat aphid pest in Brazil

The green aphid Schizaphis graminum (Rondani) is an important pest of Graminae and alatae and apterous viviparous forms were reared on the BR-35 wheat strain under controlled laboratory conditions and studied as to their variability in measures of body size and production of progeny.
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As minhocas e o manejo do solo: o caso do plantio direto do arroz irrigado

Subterranean insects harmful to crops in the south of Brazil.

Study on three species of wheat aphids (Homoptera: Aphididae) in Río Grande do Sul, Brazil

The most important morphological characteristics of aphids are reported, designed for use with specimens on microscope sudes and provide a simple identification key useful to classify multispecific infestations, as a contribution to biological control programs.

[Subterranean insects harmful to cultivation at South of Brazil]. [Portuguese]

Earthworms as new pests of irrigated rice in Brazil.

Earthworms have been reported as pests of rice in various countries, mainly in SE Asia and Australia, but only recently have they been accused of damage to rice cultivation in Brazil.
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