scholarly journals Notes on the larval biology of Xestia borealis (Lepidoptera: Noctuidae)

2001 ◽  
Vol 12 (2) ◽  
Author(s):  
Gergely Várkonyi ◽  
Matti Ahola
Keyword(s):  
Life Cycle ◽  
Larval Development ◽  
Larval Biology ◽  
Summer Diapause ◽  
First Time ◽  
Lepidoptera Noctuidae

Observations on a larva of Xestia borealis found in nature are presented. Our findings support the view that the species has a two-year life cycle with two obligatory winter diapauses. Like Xestia sincera, X. borealis seems to prefer buds and fresh shoots of spruce in its diet. Both species overwinter for the first time as large III–IV instar larvae, after overwintering rapidly complete their larval development, and subsequently fall into a long summer diapause. We also discuss some features of larval biology of other boreal Xestia species with a two-year life cycle.

scholarly journals Cleonis pigra (Scopoli, 1763) (Coleoptera: Curculionidae: Lixinae): Morphological Re-Description of the Immature Stages, Keys, Tribal Comparisons and Biology

Insects ◽  
2019 ◽  
Vol 10 (10) ◽  
pp. 325
Author(s):  
Jiří Skuhrovec ◽  
Semyon Volovnik ◽  
Rafał Gosik ◽  
Robert Stejskal ◽  
Filip Trnka
Keyword(s):  
Life Cycle ◽  
Larval Development ◽  
Host Plants ◽  
Biotic Interactions ◽  
Immature Stages ◽  
Adult Behavior ◽  
Plant Stem ◽  
First Time ◽  
Asteraceae Family

Mature larvae and pupae of Cleonis pigra (Scopoli, 1763) (Curculionidae: Lixinae: Cleonini) are morphologically described in detail for the first time and compared with known larvae and pupae of other Cleonini species. The results of measurements and characteristics most typical for larvae and pupae of Cleonini are newly extracted and critically discussed, along with some records given previously. Keys for the determination of selected Cleonini species based on their larval and pupal characteristics are attached. Dyar’s law was used for the estimation of a number of larval instars of C. pigra. Descriptions of habitats, adult behavior, host plants, life cycle, and biotic interactions are reported here. Adults and larvae feed on plants from the Asteraceae family only (genera Carduus, Cirsium, Centaurea, and Onopordum). Oviposition occurs on the base of the plant stem or the root neck. In the process of larval development, a fusiform gall forms. C. pigra and Cyphocleonus achates can coexist in the same locality. In open habitats, the weevils become the prey of carnivorous animals.

scholarly journals First record of a parasitoid, Megaselia (M) scalaris (Diptera: Phoridae) of fall armyworm, Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) from India

2021 ◽  
Vol 31 (1) ◽  
Author(s):  
Sharanabasappa S. Deshmukh ◽  
S. Kiran ◽  
Atanu Naskar ◽  
Palam Pradeep ◽  
C. M. Kalleshwaraswamy ◽  
...  
Keyword(s):  
Outer Surface ◽  
Spodoptera Frugiperda ◽  
Fall Armyworm ◽  
First Record ◽  
Instar Larva ◽  
Major Threat ◽  
Megaselia Scalaris ◽  
Maize Cultivation ◽  
First Time ◽  
Lepidoptera Noctuidae

AbstractThe fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae), has become a major threat in maize cultivation since its invasion to India in 2018. The humpbacked fly, Megaselia scalaris (Loew) (Diptera: Phoridae), was recorded as a laboratory parasitoid of FAW, for the first time in India. Initially, 30–40 maggots of M. (M) scalaris emerged out from the dead pre-pupa and pupa of laboratory-reared FAW. The fly laid up to 15 eggs on the outer surface of 6th instar larva or pre-pupa of the FAW. The incubation period was 1–2 days. The fly had 3 larval instars which lasted 3–4 days and a pupal period of 10–11 days. The adults survived for 6–7 days.

scholarly journals Life cycle of Agrotis malefida (Lepidoptera: Noctuidae): a diapausing cutworm

2013 ◽  
Vol 30 (4) ◽  
pp. 371-378 ◽  
Author(s):  
Alexandre Specht ◽  
Andrés O. Angulo ◽  
Tania S. Olivares ◽  
Edegar Fronza ◽  
Vânia F. Roque-Specht ◽  
...  
Keyword(s):  
Life Cycle ◽  
Lepidoptera Noctuidae

The influence of behaviour modifying chemicals on mating success of the red bollworm Diparopsis castanea Hmps. (Lepidoptera, Noctuidae) in Malawi

1976 ◽  
Vol 66 (2) ◽  
pp. 279-300 ◽  
Author(s):  
R. J. Marks
Keyword(s):  
Sex Pheromone ◽  
Sexual Attraction ◽  
Practical Method ◽  
Pheromone Trap ◽  
Cotton Field ◽  
Field Cage ◽  
Synthetic Sex Pheromone ◽  
Trap Catches ◽  
First Time ◽  
Lepidoptera Noctuidae

AbstractThe synthetic sex pheromone (dicastalure) of the red bollworm of cotton, Diparopsis castanea Hmps., in Central and Southern Africa, and an inhibitor of male sexual attraction (trans-9-dodecenyl acetate,=IIA), were used in an enclosed 0·2 ha cotton field-cage to reduce successful female matings. Over one month dicastalure at 21·0 and 42·3 g/ha produced average reductions in mating of 47·9% and 72·5% respectively and 37·9 g IIA/ha produced an overall reduction in mating of 71·5%, or 79·5% in released moth populations, over the same period. The proportion of virgin females present in disruption situations was significantly greater than in untreated populations and was density-independent for moth populations of up to 2 200/ha. The proportion of fertile eggs in disruption situations was correspondingly reduced to 30·2% from an average of 67·9% in control cycles. Reduction in sex pheromone trap catches is an unsatisfactory indicator of the extent to which males are prevented from inseminating females and considerably over-estimates the true degree of disruption. This is the first time that a naturally occurring inhibitor has been used successfully to disrupt mating in a field population of insects and it indicates the potential of the method for the control of high density pest populations in cotton. However, use of polyethylene dispensing mechanisms similar to those used in the field-cage disruption experiments would be unsuitable as a practical method of dispensing behaviour modifying chemicals and it is suggested that, for suitably controlled release of such chemicals, currently available microencapsulation technology offers the best prospects.

Research of Graphic User Interface of Carbon Dioxide Emission Evaluation Model in Construction Life Cycle Based on Matlab

2013 ◽  
Vol 689 ◽  
pp. 546-550
Author(s):  
Xue Hong Gan ◽  
Wei Wang ◽  
Shi Mei Liu
Keyword(s):  
Carbon Dioxide ◽  
Life Cycle ◽  
Evaluation Model ◽  
Carbon Dioxide Emission ◽  
Graphic User Interface ◽  
Property Management ◽  
Low Carbon ◽  
Management Responsibility ◽  
Residential Quarter ◽  
First Time

To build carbon dioxide emission evaluation model in construction life cycle is the key link to make low-carbon research of theoretical studies head towards practical application. For the first time, residential quarter is selected as the object in the study, carbon dioxide emission management responsibility of owner and property being considered and carbon dioxide emission evaluation model in construction life cycle based on matlab as well as database of carbon dioxide factor being built initially. Net carbon dioxide emission information will be shown timely, then carbon dioxide emission and absorption can be adjusted by property management accordingly.

Larval development of the epizoic barnacle Octolasmis unguisiformis Kobayashi & Kato, 2003 (Cirripedia, Pedunculata)

Crustaceana ◽  
2017 ◽  
Vol 90 (3) ◽  
pp. 321-336 ◽  
Author(s):  
H. Wijayanti ◽  
Y. Yusa ◽  
R. Kado
Keyword(s):  
Larval Development ◽  
Morphological Features ◽  
Free Swimming ◽  
First Time

Larvae of the androdioecious and endangered barnacle,Octolasmis unguisiformis, were cultured in the laboratory for the first time. The larvae passed through six free-swimming naupliar stages and a cyprid stage. The naupliar stages required a combined minimum of 44 days at 25°C, and the cyprid stage lasted up to 7 days. However, none of the cyprids settled, even if the host crab (Macrophthalmus milloti) was introduced. The morphological features of the naupliar stages are described and compared with otherOctolasmisspp.

Peribaea tibialis Rob.-Desv. (Diptera: Tachinidae), new to Krasnodar Territory, parasitizes the introduced moth Tarachidia candefacta Hübner (Lepidoptera: Noctuidae)

2005 ◽  
Vol 13 (2) ◽  
pp. 246-246
Author(s):  
V.A. Richter ◽  
O.S. Shevchenko
Keyword(s):  
First Time ◽  
Lepidoptera Noctuidae

A Palaearctic fly species, Peribaea tibialis Rob.-Desv. (Diptera: Tachinidae), was found to parasitize larvae of the introduced moth Tarachidia candefacta Hьbner (Lepidoptera: Noctuidae). P. tibialis is recorded from Krasnodar Terr. for the first time.

scholarly journals Nesting behaviour and larval biology of Sphex opacus Dahlbom (Hymenoptera, Sphecidae) from Brazil

2005 ◽  
Vol 22 (3) ◽  
pp. 709-711
Author(s):  
Sandor C. Buys
Keyword(s):  
Southeastern Brazil ◽  
Coastal Habitat ◽  
Larval Biology ◽  
Larval Behaviour ◽  
Nesting Behaviour ◽  
First Time

Aspects of the nesting behaviour of Sphex opacus Dahlbom, 1845 are presented for the first time, based on observations carried out in a coastal habitat from southeastern Brazil. Larval behaviour and development were studied in laboratorial conditions.

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