AGGREGATING BEHAVIOR OF UMBONIA CRASSICORNIS (HOMOPTERA: MEMBRACIDAE)

1974 ◽  
Vol 106 (2) ◽  
pp. 169-173 ◽  
Author(s):  
T. K. Wood
Keyword(s):  
Mating Behavior ◽  
Adult Female ◽  
Egg Mass ◽  
Egg Hatching ◽  
Adult Females ◽  
First Instar ◽  
Umbonia Crassicornis ◽  
Sexually Mature

AbstractIndividuals of Umbonia crassicornis Amyot and Serville (Homoptera: Membracidae) form aggregations both as nymphs and adults. Each adult female deposits one set of eggs and remains with them. Prior to egg hatching the female moves off the egg mass and makes a series of spiral bark slits with the ovipositor. First instar nymphs aggregate along these slits with the female positioned below the cluster. Adult females use the front tarsi to stroke the backs of moving nymphs to return them to the aggregation.Adult females remain with the nymphs until they become adults. Aggregations of adults fragment when sexually mature; mating takes place before and during dispersal. Mating behavior consists of four components, the precopulatory position being prolonged.

New Margarodid species (Homoptera: Coccoidea : Margarodidae : Monophlebinae) from New Guinea

1989 ◽  
Vol 3 (7) ◽  
pp. 877 ◽  
Author(s):  
S Bhatti ◽  
PJ Gullan
Keyword(s):  
New Species ◽  
Adult Female ◽  
New Guinea ◽  
New Genera ◽  
Genital Opening ◽  
Adult Females ◽  
First Instar ◽  
Two New Species ◽  
First Time ◽  
One New Species

Three new genera and 11 new species from New Guinea are described in the tribe Monophlebulini. Erropera, gen, nov., contains four new species: E. ablusa, E. papuensis, E, pilosa and E. sedlaceki; Modicicoccus, gen. nov., contains four new species: M. gagnei, M. kaindiensis, M. monticolus and M. rtewsteadi; and Peengea, gen. nov., contains one new species: P. affinis. Two new species of Mottophlehirlus Cockerell, M. enarotalicus and M. gressitti, are described. The adult females of all 11 new species and the first instar nymphs of E. sedlaceki and P. affinis are described. A marsupium associated with the genital opening of the adult female is reported for the first time in the tribe Monophlebulini.

Parasitism of the commercial sand crab Portunus pelagicus (L.) by the rhizocephalan Sacculina granifera Boschma, 1973 in Moreton Bay, Queensland, Australia

1994 ◽  
Vol 45 (2) ◽  
pp. 169 ◽  
Author(s):  
WD Sumpton ◽  
MA Potter ◽  
GS Smith
Keyword(s):  
Adult Female ◽  
Egg Mass ◽  
Size Distributions ◽  
Adult Males ◽  
Infection Rates ◽  
Portunus Pelagicus ◽  
Female Population ◽  
Moreton Bay ◽  
Adult Females

In Moreton Bay, Queensland, externae of Sacculina granifera Boschma were found in 7.0% of adult males and 123% of adult females of Portunus pelagicus. Infection rates were seasonal for both sexes and higher in the adult female population, with more than 20% of adult females carrying externae during some summer months. Infection rates were less than 3% in areas outside the bay and generally highest in the southern and central bay. Nineteen males and 15 females had abdominal scars where externae had become dislodged. The gonads of most parasitized crabs were underdeveloped, but 5.6% of externa-bearing females and 10% of externa-bearing males also had well developed gonads. Two female sand crabs were found with both a small egg mass and a mature externa (a condition not previously reported). Size distributions of infected and uninfected adult crabs were similar, suggesting that large crabs as well as juvenile crabs were likely to be infected.

A new species of Marsipococcus Cockerell & Bueker (Hemiptera: Coccomorpha: Coccidae) from Malaysia

Zootaxa ◽  
2017 ◽  
Vol 4358 (2) ◽  
pp. 295
Author(s):  
BOZENA ŁAGOWSKA ◽  
JON H. MARTIN ◽  
CHRIS J. HODGSON
Keyword(s):  
New Species ◽  
Adult Female ◽  
Adult Male ◽  
Instar Nymph ◽  
Adult Females ◽  
First Instar ◽  
Female Pupa ◽  
A New Species

The adult female, first-instar nymph, second-instar male, third-instar female, pupa and adult male of a new species of Marsipococcus Cockerell & Bueker (Hemiptera: Coccomorpha: Coccidae) from Malaysia, M. ulubendulensis Łagowska & Martin sp. n., are described and illustrated, while the second-instar female is only described. Marsipococcus is rediagnosed and a key to the adult females of the four species now placed in this genus is included. 

scholarly journals Analysis of Cotton Chromosome 11 and 14 Root-Knot Nematode Resistance Quantitative Trait Loci Effects on Root-Knot Nematode Postinfection Development, Egg Mass Formation, and Fecundity

2020 ◽  
Vol 110 (4) ◽  
pp. 927-932 ◽  
Author(s):  
Martin J. Wubben ◽  
Amanda G. Gaudin ◽  
Jack C. McCarty ◽  
Johnie N. Jenkins
Keyword(s):  
Quantitative Trait Loci ◽  
Adult Female ◽  
Quantitative Trait ◽  
Egg Mass ◽  
Chromosome 11 ◽  
Root Knot Nematode ◽  
Female Fecundity ◽  
Adult Females ◽  
Trait Loci ◽  
Mass Formation

Cotton (Gossypium hirsutum) resistance to root-knot nematode (RKN) (Meloidogyne incognita) is controlled by quantitative trait loci (QTLs) on chromosomes 11 (CHR11) and 14 (CHR14). The individual contributions of these QTLs to resistance are not completely understood. We developed near isogenic lines susceptible at both loci (null), having CHR11 or CHR14 alone, and having both QTLs (CHR11/CHR14). RKN reproduction, postinfection development, egg mass formation, and adult female fecundity were evaluated. Total RKN reproduction was reduced more in CHR14 versus CHR11 but not as greatly as in CHR11/CHR14. Second-stage juvenile (J2) development to the J3 and J4 (J3+J4) life stages was delayed in CHR11, whereas the J2 transition to J3+J4 in CHR14 followed a similar track as in null plants. Development of J3+J4 nematodes to adult females was inhibited in CHR14 at 21 days after inoculation (DAI). Adult female numbers were decreased in CHR11 and CHR14 at 21 and 28 DAI, with CHR11/CHR14 showing an even greater reduction by 28 DAI. The number of egg masses per gram of root at 21, 28, and 35 DAI formed on CHR11 and CHR14 followed a similar track as numbers of adult females. RKN adult female fecundity (eggs/egg mass) was reduced for CHR11 and CHR14 compared with the null at 21 DAI; however, CHR11 eggs/egg mass was only slightly reduced versus the null by 28 DAI. In contrast, CHR14 eggs/egg mass was like CHR11/CHR14, showing a 4-fold decrease compared with CHR11 and the null.

Description of a new species of Kermicus Newstead (Hemiptera: Coccomorpha: Pseudococcidae) from bamboo in southeast China

Zootaxa ◽  
2020 ◽  
Vol 4859 (3) ◽  
pp. 440-450
Author(s):  
SAN-AN WU ◽  
SHAOBIN HUANG ◽  
CHUANGUAN LIANG
Keyword(s):  
New Species ◽  
Adult Female ◽  
Guangdong Province ◽  
Instar Nymph ◽  
Southeast China ◽  
Adult Females ◽  
First Instar ◽  
Anal Ring ◽  
A New Species ◽  
Marginal Region

A new species, Kermicus huizhouensis Wu & Huang sp. n. (Hemiptera: Coccomorpha: Pseudococcidae), is described and illustrated based on the adult female, second instar female and first-instar nymph. It was collected at Qianfeng village, Huiyang District, Huizhou City, Guangdong Province, P. R. China, inside the stem of bamboo Bambusa rigida (Poaceae) and attended by the ant Tetraponera binghami (Forel) (Hymenoptera: Formicidae). It differs from K. wroughtoni Newstead, 1897 by the adult female lacking multilocular disc pores in the marginal region of the venter, and both the adult female and first-instar nymph having the anal ring bearing 16–20 setae. Keys to genera of legless mealybugs on bamboo based on adult females, and the immature stages of Kermicus, are provided. 

scholarly journals Behavior of First Instar Nymphs ofEdessa meditabunda(F.) (Hemiptera: Pentatomidae) on the Egg Mass

2014 ◽  
Vol 97 (1) ◽  
pp. 277-280 ◽  
Author(s):  
Giulianne S. Calizotti ◽  
Antônio R. Panizzi
Keyword(s):  
Egg Mass ◽  
First Instar

scholarly journals Pathogenicity and Volatile Nematicidal Metabolites from Duddingtonia flagrans against Meloidogyne incognita

2021 ◽  
Vol 9 (11) ◽  
pp. 2268
Author(s):  
Xiaoyu Mei ◽  
Xin Wang ◽  
Guohong Li
Keyword(s):  
Meloidogyne Incognita ◽  
Plant Pathogens ◽  
Plant Root ◽  
Nematicidal Activity ◽  
Mass Spectrometry Analysis ◽  
Gas Chromatography Mass Spectrometry ◽  
Egg Mass ◽  
Duddingtonia Flagrans ◽  
Egg Hatching ◽  
Root Knot Nematodes

Plant parasitic nematodes, especially parasitic root-knot nematodes, are one of the most destructive plant pathogens worldwide. The control of plant root-knot nematodes is extremely challenging. Duddingtonia flagrans is a type of nematode-trapping fungi (NTF), which produces three-dimensional adhesive networks to trap nematodes. In this study, the pathogenicity and volatile organic compounds (VOCs) of the NTF D. flagrans against the plant root-knot nematode, Meloidogyne incognita, were investigated. The predatory process of D. flagrans trapping M. incognita was observed using scanning electron microscopy. Gas chromatography-mass spectrometry analysis of the VOCs from D. flagrans led to the identification of 52 metabolites, of which 11 main compounds were tested individually for their activity against M. incognita. Three compounds, cyclohexanamine, cyclohexanone, and cyclohexanol, were toxic to M. incognita. Furthermore, these three VOCs inhibited egg hatching of M. incognita. Cyclohexanamine showed the highest nematicidal activity, which can cause 97.93% mortality of M. incognita at 8.71 µM within 12 h. The number of hatched juveniles per egg mass after 3 days was just 8.44 when treated with 26.14 µM cyclohexanamine. This study is the first to demonstrate the nematicidal activity of VOCs produced by D. flagrans against M. incognita, which indicates that D. flagrans has the potential to biocontrol plant root-knot nematodes.

Taxonomy of Kermes greeni Bodenheimer (Hemiptera: Coccoidea: Kermesidae) with a new synonymy

Zootaxa ◽  
2012 ◽  
Vol 3545 (1) ◽  
pp. 67 ◽  
Author(s):  
MALKIE SPODEK ◽  
YAIR BEN-DOV ◽  
ALEX PROTASOV
Keyword(s):  
Adult Female ◽  
Instar Nymph ◽  
Type Material ◽  
First Instar ◽  
New Synonymy

The first-instar nymph and adult female of Kermes greeni Bodenheimer, 1931 are redescribed and a lectotype is designated. Kermes palestiniensis Balachowsky, 1953 is synonymized with K. greeni. This synonymy is based on a study of the type material of K. greeni and K. palestiniensis, as well as on fresh, topotypic material collected from Quercus calliprinos Webb in Israel.

Taxonomic revision of the myrmecophilous, meliponiphilous and rhizophilous soft scale genus Cryptostigma Ferris (Hemiptera: Coccoidea: Coccidae)

Zootaxa ◽  
2019 ◽  
Vol 2709 (1) ◽  
pp. 1 ◽  
Author(s):  
TAKUMASA KONDO
Keyword(s):  
New Species ◽  
Host Plants ◽  
New World ◽  
Taxonomic Revision ◽  
Scale Insects ◽  
Biological Information ◽  
World Species ◽  
Soft Scale ◽  
Adult Females ◽  
First Instar

The present study revises the soft scale insects of the genus Cryptostigma Ferris (Hemiptera: Coccoidea: Coccidae), which comprises a group of New World species associated with ants or bees or of hypogeal habit. It includes 17 species, of which 10 species are new to science. The study is based on the external, mostly cuticular morphology of the adult females and first-instar nymphs. Taxonomic keys based on adult females and known first-instar nymphs are provided. For each species a description or redescription is given, followed by information on its distribution, host plants, and known biological information including associated ants or bees. The new species described are Cryptostigma chacoensis sp. nov., C. gullanae sp. nov., C. jonmartini sp. nov., C. longinoi sp. nov., C. melissophilum sp. nov., C. mexicanum sp. nov., C. philwardi , sp. nov. C. rhizophilum sp. nov., C. serratum sp. nov., and C. tuberculosum sp. nov. Neolecanium urichi (Cockerell) is transferred to Cryptostigma as C. urichi (Cockerell) comb. nov., and C. quinquepori (Newstead) is synonymized with Cryptostigma urichi, comb. nov. Lectotypes are designated for Cryptostigma saundersi Laing, Lecanium silveirai Hempel, Lecanium urichi Cockerell and Akermes quinquepori Newstead. Cryptostigma inquilina (Newstead) is amended to C. inquilinum in order to match the neutral ending “stigma”. The following names are treated as nomina nuda: Cryptostigma jamaicensis and Lecanopsis jamaicensis (Ben-Dov, 1993: 97).

scholarly journals Subolesin vaccination inhibits blood feeding and reproduction of Haemaphysalis longicornis in rabbits

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Seung-Hun Lee ◽  
Jixu Li ◽  
Paul Franck Adjou Moumouni ◽  
Kiyoshi Okado ◽  
Weiqing Zheng ◽  
...  
Keyword(s):  
Body Weight ◽  
Weight Ratio ◽  
Blood Feeding ◽  
Open Reading Frame ◽  
Egg Mass ◽  
Haemaphysalis Longicornis ◽  
Body Weight Ratio ◽  
Egg Hatching ◽  
Reading Frame ◽  
Tick Vaccine

Abstract Background Ticks can transmit numerous tick-borne pathogens and cause a huge economic loss to the livestock industry. Tick vaccines can contribute to the prevention of tick-borne diseases by inhibiting tick infestation or reproduction. Subolesin is an antigenic molecule proven to be a potential tick vaccine against different tick species and even some tick-borne pathogens. However, its effectivity has not been verified in Haemaphysalis longicornis, which is a widely distributed tick species, especially in East Asian countries. Therefore, the purpose of this study was to evaluate the effectivity of subolesin vaccination against H. longicornis in a rabbit model. Methods Haemaphysalis longicornis (Okayama strain, female, adult, parthenogenetic strain) and Japanese white rabbits were used as the model tick and animal, respectively. The whole open reading frame of H. longicornis subolesin (HlSu) was identified and expressed as a recombinant protein using E. coli. The expression was verified using sodium dodecyl sulfate polyacrylamide gel electrophoresis, and the immunogenicity of rHlSu against anti-H. longicornis rabbit serum was confirmed using Western blotting. After vaccination of rHlSu in rabbits, experimental infestation of H. longicornis was performed. Variables related to blood-feeding periods, pre-oviposition periods, body weight at engorgement, egg mass, egg mass to body weight ratio, and egg-hatching periods were measured to evaluate the effectiveness of subolesin vaccination. Results The whole open reading frame of HlSu was 540 bp, and it was expressed as a recombinant protein. Vaccination with rHlSu stimulated an immune response in rabbits. In the rHlSu-vaccinated group, body weight at engorgement, egg mass, and egg mass to body weight ratio were statistically significantly lower than those in the control group. Besides, egg-hatching periods were extended significantly. Blood-feeding periods and pre-oviposition periods were not different between the two groups. In total, the calculated vaccine efficacy was 37.4%. Conclusions Vaccination of rabbits with rHlSu significantly affected the blood-feeding and reproduction in H. longicornis. Combined with findings from previous studies, our findings suggest subolesin has the potential to be used as a universal tick vaccine.

Sign in / Sign up

Export Citation Format

Share Document