scholarly journals The cotton mealybug, Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) as a new menace to cotton in Egypt and its chemical control

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.

Zootaxa ◽  
2005 ◽  
Vol 964 (1) ◽  
pp. 1 ◽  
Author(s):  
MARK P. CULIK ◽  
PENNY J. GULLAN

Three mealybug (Hemiptera: Pseudococcidae) plant pest species: Dysmicoccus boninsis (Kuwana), Phenacoccus solenopsis Tinsley, and Pseudococcus viburni (Signoret), are recorded for the first time in the state of Espírito Santo, Brazil. This is the first record of Phenacoccus solenopsis in Brazil, where it was found infesting tomato plants. The species Antonina graminis (Maskell), a common pest of Bermuda grass, and Dysmicoccus brevipes (Cockerell), a major pest of pineapple, also were encountered.


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


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.


2017 ◽  
Vol 9 (1) ◽  
pp. 382-388 ◽  
Author(s):  
V. S. Nagrare ◽  
J. Annie Sheeba ◽  
Paresh Bhoyar ◽  
Bhausaheb Naikwadi

The study on biochemical changes in cotton plants (Gossypium hirsutum L.) due to infestation by cotton mealybug Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) was conducted at CICR Nagpur during 2014-15. Total protein contents estimated from the shoots of the healthy plants (4.29 mg/g) indicated 50.5% increase over the healthy plants (2.85 mg/g). Total phenol content increased by 185.7% in the mealybug infested plants (0.20μg/g) over the healthy plants (0.07μg/g). Insignificant difference in the level of total soluble sugar was observed in mealybug infested plants (1.00μg/g) as compared to healthy plants (0.90μg/g). Total reducing sugar was found to be unaffected with the mealybug infestation. Although there was depletion in all the photosynthetic pigments viz., chlorophyll a (19.1%), chlorophyll b (23.7%), total chlorophyll (21.2%) and carotenoids (20.8%) due to the mealybug infestation, these values were not statistically different in the healthy plants. This is the first report on biochemical changes in cotton plant due to infestation of P. solenopsis.


2020 ◽  
Vol 125 (4) ◽  
pp. 404-406
Author(s):  
Thibault Ramage

A Helorid wasp, Helorus ruficornis Förster, 1856, is reported for the first time on Tahiti (Society Islands), which is also the first record of both Proctotrupoidea and family Heloridae in French Polynesia. The potential hosts of Helorus ruficornis in French Polynesia are discussed.


2018 ◽  
Vol 24 (1) ◽  
Author(s):  
SHVETA PATEL ◽  
RAJENDRA SINGH

Extensive survey of mantids in the northeastern Uttar Pradesh was conducted. Two mantid species were recorded for the first time from the target area, viz.: Pyrgomantis pallida, 1917 and Bactromantis mexicana.


Author(s):  
Kefah Naser Abdul-Ameer ◽  
Fatima Khalaf Atwan

   The Ciliophoran Trichodina magna Van As and Basson, 1989 is recorded for the first time in in Iraq from gills of the blue tilapia Oreochromis aureus (Steindachner, 1864) Iraq from Al-Graiat location on the Tigris River at Baghdad city. The description and measurements of this external parasite as well as its illustrations are given.  


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