scholarly journals Occurrence of new species of mealybug on cotton fields in the states of Bahia and Paraíba, Brazil

Bragantia ◽  
2013 ◽  
Vol 71 (4) ◽  
pp. 467-470 ◽  
Author(s):  
Carlos Alberto Domingues da Silva

The cotton mealybug, Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) has been reported occurring in several countries causing severe losses in economically important crops, including cotton. Based on information reported by farmers in the regions of the Southwest and Middle São Francisco, Bahia and also in the regions of the Agreste and Semi-arid of the Paraiba State, high infestations of cotton mealybugs have occurred in these regions during the cotton season of 2007 and 2008. The cotton mealybug was identified as P. solenopsis and this represents the first record of this insect attacking cotton in Brazil.

2016 ◽  
Vol 56 (2) ◽  
pp. 111-115 ◽  
Author(s):  
El-Zahi Saber El-Zahi ◽  
Safwat Abd El-Salam Aref ◽  
Samy Kamal Mohammad Korish

Abstract The cotton mealybug, Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) is a polyphagous sap sucking insect with a wide geographical and host range causing severe losses in economically important crops. This study represents the first record of P. solenopsis as a new insect attacking cotton plants (Gossypium barbadense var. Giza 86) in Kafr El-Sheikh governorate, Egypt. The insect was noticed on cotton plants for the first time during its growing season of 2014. The mealybug specimens were collected from infested cotton plants and identified as P. solenopsis. In an attempt to control this pest, eight toxic materials viz., imidacloprid, thiamethoxam, flonicamid, emamectin-benzoate, chlorpyrifos, methomyl, deltamethrin and mineral oil (KZ-oil), belonging to different chemical groups, were tested for their influence against P. solenopsis on cotton under field conditions. Methomyl, imidacloprid, thiamethoxam and chlorpyrifos showed the highest efficacy against P. solenopsis recording 92.3 to 80.4% reduction of the insect population. Flonicamid, emamectin-benzoate and KZ-oil failed to exhibit sufficient P. solenopsis control.


2015 ◽  
Vol 55 (1) ◽  
pp. 48-51 ◽  
Author(s):  
Samah Sayed Ibrahim ◽  
Fatma Abdelhalim Moharum ◽  
Nesreen Mohamed Abd El-Ghany

Abstract Recently, the mealybug Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) was recorded as a new pest on tomato plants (Lycopersicon esculentum Mill) growing in Egypt. The mealybugs specimens were collected from tomato plants in the Qalyoubia governorate during summer season of 2014. The mealybug was identified as P. solenopsis based on the morphological characters and taxonomic key of this species. This study represents the first record of P. solenopsis as a new insect pest attacking tomato plants in Egypt


Zootaxa ◽  
2010 ◽  
Vol 2677 (1) ◽  
pp. 1 ◽  
Author(s):  
LEILA A. SOUZA ◽  
ANDRÉ R. SENNA ◽  
ADRIANO B. KURY

A new species of terrestrial isopod, Gabunillo aridicola sp. nov., is described from Ceará and Rio Grande do Norte States, in Karstic formations in the Brazilian semi-arid (caatinga). This genus, hitherto monotypic, was known only from Gabon. This occurrence is remarkable because very few genera of Armadillidae are known from both Afrotropics and Neotropics, and because it offers evidence of a tropical Gondwana biogeographical component.


ZooKeys ◽  
2020 ◽  
Vol 974 ◽  
pp. 23-29
Author(s):  
Zhuomiao Li ◽  
Tingting Yao ◽  
Zhihong Xu ◽  
Ling Meng ◽  
Baoping Li

A new species, Cheiloneurus nankingensissp. nov., from Eastern China is described. It is similar to C. arabiacus Hayat but distinct from it in a number of morphological characters. It is a hyperparasitoid with the encyrtid wasp Aenasius arizonensis Girault, 1915 as the primary host and the cotton mealybug Phenacoccus solenopsis Tinsley, 1898 (Hemiptera: Pseudococcidae) as the secondary host. A key to all seven species of Cheiloneurus known from China is presented.


2007 ◽  
Vol 7 (2) ◽  
pp. 325-328 ◽  
Author(s):  
Freddy Bravo

A new species of Australopericoma Vaillant from Brazil is described and illustrated. It is the first record of Australopericoma from the semi-arid region of northeastern Brazil.


2020 ◽  
Vol 54 (2) ◽  
pp. 313-320
Author(s):  
O. V. Anissimova

Euastrum lacustre is reported for Russia for the first time. This alcaliphilic species was found in the periphyton and plankton of three lakes in the Kursk Region (European Russia). A description of morphology, including the relief of cell wall, and habitats where this taxon is found are represented. LM and SEM microphotographs are provided. Morphological differences of E. lacustre from similar species are discussed. New species for region, namely Closterium aciculare, Cosmarium formosulum, C. granatum, C. pseudoinsigne, C. reniforme and Staurastrum pingue, are found in the samples together with E. lacustre.


2020 ◽  
Vol 129 (1) ◽  
pp. 63
Author(s):  
Khaoula Aroua ◽  
Mehmet Bora Kaydan ◽  
Cansu Ercan ◽  
Mohammed Biche

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