scholarly journals Biology and morphometrics of the immature stages of Epinotia aporema on artificial diet

2010 ◽  
Vol 45 (2) ◽  
pp. 221-223 ◽  
Author(s):  
Joel Arneodo ◽  
Graciela Quintana ◽  
Alicia Sciocco-Cap
Keyword(s):  
Biological Control ◽  
Larval Stage ◽  
Artificial Diet ◽  
Development Time ◽  
Head Capsule ◽  
Immature Stages ◽  
Larval Instars ◽  
Egg Incubation ◽  
Insect Interactions ◽  
Epinotia Aporema

The objective of this work was to establish a life table for the immature stages of Epinotia aporema, as part of a wider investigation on its biological control. Insects were reared on an artificial diet at 25±1ºC and a 16:8 (light:dark) hour photoperiod. For the identification of larval instars for the study of pathogen-insect interactions under laboratory conditions, head capsule widths (HCWs) were also determined. The egg incubation period was 4.13±0.30 days, larval stage took 11.64±0.49 days, and the development time of the pupal phase was sex-dependent with 8.51±0.69 days for the females and 9.41±0.65 days for the males. Five larval instars were identified.

scholarly journals Descriptions of immature stages of Octodonta nipae (Maulik) (Coleoptera, Chrysomelidae, Cassidinae, Cryptonychini)

ZooKeys ◽  
2018 ◽  
Vol 764 ◽  
pp. 91-109 ◽  
Author(s):  
Ling-fei Peng ◽  
Jin-lei Li ◽  
You-ming Hou ◽  
Xiang Zhang
Keyword(s):  
Invasive Species ◽  
Electron Micrographs ◽  
Head Capsule ◽  
Scanning Electron Micrographs ◽  
Immature Stages ◽  
Larval Instars ◽  
Palm Trees ◽  
Scanning Electron

Octodontanipae(Maulik, 1921), a hispid that damages several species of palm trees, was introduced accidently into China in 2001. The egg, larva, prepupa and pupa ofO.nipaeare illustrated and described in detail and compared with another invasive species,Brontispalongissima(Gestro, 1885); the scanning electron micrographs of the head capsule, antenna, maxilla, labium and lateral scoli are provided, as well as photos of body of all larval instars and pupa. It is the second description of immature stages in the genusOctodontaChapuis.

Characteristics of Attack of Coastal Timbers by Pselactus spadix (Herbst) (Col.: Curc.: Cossoninae) and an Investigation of its Life History

Holzforschung ◽  
2002 ◽  
Vol 56 (4) ◽  
pp. 335-359 ◽  
Author(s):  
P. Oevering ◽  
A.J. Pitman
Keyword(s):  
Life History ◽  
Life Cycle ◽  
Pinus Sylvestris ◽  
Scots Pine ◽  
Wood Surface ◽  
Development Time ◽  
Adult Emergence ◽  
Head Capsule ◽  
Adult Longevity ◽  
Larval Instars

Summary Pselactus spadix attack of marine timbers was characterised by circular emergence holes 1.48±0.05 mm in diameter and adult tunnels (1.49±0.34 mm) breaking through the wood surface. Larval tunnels measured 0.407–1.892 mm in diameter, initiated from adult tunnels and increased in diameter away from the adult tunnel terminating in frass free pupal chambers (1.6±0.3 mm × 3.5±0.7 mm). Observations of larval tunnel locations indicated oviposition occurred inside the adult tunnels. P. spadix life history was investigated in Scots pine (Pinus sylvestris) heartwood at 22±2 °C and 99±1% r.h. Mean adult longevity was 11.5±6.5 months, with mean post-mating longevity for males (11.7±2.9 months) significantly longer than for females (6.3±1.1 months). Adults of at least 2–3 months old were found mating in galleries, which, with observations of the larval tunnel pattern, indicated P. spadix can complete its life cycle without emerging from wood. Five larval instars were identified by measurement of 1722 head capsule widths and application of Dyar's law. Mean development time from 2nd instar to adult emergence was 70.5±6.9 weeks and pupation took 14.6±5.8 days. Development from 2nd instar to reproductive adult took between 17–20 months, with life cycle approximating 24 months at 22±2 °C and 99±1%

scholarly journals Morphology of immature stages of Helophorus (Gephelophorus) auriculatus (Coleoptera, Helophoridae)

2020 ◽  
Vol 60 (1) ◽  
pp. 319-332 ◽  
Author(s):  
Yusuke N. Minoshima ◽  
Reiya Watanabe
Keyword(s):  
Head Capsule ◽  
Immature Stages ◽  
Taxonomic Character ◽  
Larval Instars ◽  
Larval Stages ◽  
First Instar ◽  
Egg Case ◽  
Morphological Transformations

The morphology of immature stages of Helophorus (Gephelophorus) auriculatus Sharp, 1884 is described. This is the first description of the larva and pupa of the subgenus Gephelophorus Sharp, 1915. We describe the morphology of the egg-case, all larval stages (first to third instar, including chaetotaxy of the head) and pupa. Morphological transformations between larval instars were examined. Head chaetotaxy was nearly identical between instars. Ventral teeth on the nasale, considered as a useful taxonomic character, were absent in the first instar but well developed in later instars. Chaetotaxy differed among the subgenera Gephelophorus, Helophorus and Lihelophorus in the length and shape of setae on head capsule and maxilla. Pupal morphology was similar to that of previously described pupae: H. (Helophorus) aquaticus (Linnaeus, 1758) and H. (Rhopalohelophorus) orientalis Motschulsky, 1860. A key to families of the Hydrophiloidea of Japan based on larval characters is provided.

Life Cycle of Chrysomya rufifacies (Diptera: Calliphoridae) Under Semi-Controlled Laboratory Conditions

2021 ◽  
Author(s):  
Kepler Andrade-Herrera ◽  
Carolina Núñez-Vázquez ◽  
Erendira Estrella
Keyword(s):  
Life Cycle ◽  
Larval Stage ◽  
Forensic Entomology ◽  
Development Time ◽  
Adult Emergence ◽  
Immature Stages ◽  
Biological Cycle ◽  
Chrysomya Rufifacies ◽  
Post Feeding ◽  
Laboratory Conditions

Abstract Adult Calliphoridae flies, as well as their immature stages collected from carcasses, have been used as evidence in forensic investigations to estimate the postmortem interval (PMI), particularly those of the genus Chrysomya as it is one of the first genera to colonize a corpse. Chrysomya rufifacies (Macquart 1842), due to its appearance in cadaveric remains, plays a fundamental role in the study of forensic entomology. For this reason, we determined the biological cycle of C. rufifacies under semicontrolled laboratory conditions: uncontrolled average fluctuating temperature of 29. 76 ± 3. 22°C, uncontrolled average fluctuating humidity of 48. 91 ± 11.13%, and a controlled photoperiod of 12/12 (L/O). We established that the total development time from oviposition to adult emergence of C. rufifacies was 6. 5 d. The eggs took 12 h to hatch after oviposition. The complete larval stage took 60 h (instar 1 = 12 h, instar 2 = 12 h, instar 3 = 24 h, instar 3 post-feeding = 12 h). The pupa had a duration of 84 h. The species needed a total of 4642.8(±4.59) accumulated degree-hours (ADH) to complete its biological cycle.

Morphology of the immature stages of Meligethes aeneus (F.) and M. viridescens (F.) (Coleoptera, Nitidulidae)

1965 ◽  
Vol 55 (4) ◽  
pp. 747-759 ◽  
Author(s):  
P. Osborne
Keyword(s):  
Experimental Evidence ◽  
Head Capsule ◽  
Immature Stages ◽  
Meligethes Aeneus ◽  
Larval Instars ◽  
Head Capsule Width ◽  
Laboratory Conditions ◽  
First Time

Experimental evidence is given to show that only two larval instars occur during the development of Meligethes aeneus (F.) (Coleoptera, Nitidulidae) under laboratory conditions in Scotland, based on the facts that there is only one moult and only one increase in head-capsule width. The egg, first- and second-instar larvae, prepupa and pupa of M. aeneus are described and compared with the corresponding stages of M. viridescens (F.). The larvae of the two species are differentiated for the first time by the arrangement of dorsal cuticular tubercles, the size and form of the urogomphi and the width of the head capsules.

Redescription of Paracles vulpina (Hübner, [1825]) (Lepidoptera: Erebidae), with comments of the aquatic habit of larval instars

Zootaxa ◽  
2021 ◽  
Vol 5061 (1) ◽  
pp. 157-166
Author(s):  
HERNÁN MARIO BECCACECE ◽  
GABRIELA BENTANCUR VIGLIONE ◽  
PAMELA GRAFF ◽  
ENRIQUE MORELLI
Keyword(s):  
Aquatic Plants ◽  
Larval Stage ◽  
Current Knowledge ◽  
Feeding Habit ◽  
Immature Stages ◽  
Male And Female ◽  
Larval Instars ◽  
Brown Band ◽  
First Time ◽  
Flooded Areas

The genus Paracles Walker, 1855 is one of the most diverse genera present in Arctiinae and some species have larvae with aquatic habits. Several larvae were found swimming in flooded areas in different grasslands and were bred to adults to identify the species: Paracles vulpina (Hübner, [1825]). The current knowledge of immature stages of this species is not useful to identify and discriminate from other species of Paracles. For this reason, we proposed to redescribe adults of P. vulpina, showing for the first time the male and female genitalia, and improve the information on the immature stages and their habits. The adults can be recognized by the whitish paler brown band in the costal area in the forewing and whitish paler brown antenna. The final larval stage of P. vulpina can be differentiated from other species because it shows a body with a black pubescence except for a ferruginous subventral pubescence, blue dorsal verrucae, red lateral verrucae, and dorsal plastron with longest white setae. Because of its polyphagous feeding habit on aquatic and non aquatic plants we consider the aquatic larval habit is not a necessary strategy and could depend on the ground topography or weather of the locality.  

scholarly journals Immature stages of Spodoptera albula (Walker) (Lepidoptera: Noctuidae): Developmental parameters and host plants

2013 ◽  
Vol 85 (1) ◽  
pp. 271-284 ◽  
Author(s):  
DÉBORA G. MONTEZANO ◽  
ALEXANDRE SPECHT ◽  
TARCISO M. BORTOLIN ◽  
EDEGAR FRONZA ◽  
DANIEL R. SOSA-GÓMEZ ◽  
...  
Keyword(s):  
Larval Stage ◽  
Host Plants ◽  
Artificial Diet ◽  
Average Duration ◽  
Immature Stages ◽  
Biological Cycle ◽  
Larval Host ◽  
Rearing Methods ◽  
Lepidoptera Noctuidae ◽  
Larval Host Plants

This study aimed to detail the temporal and morphological parameters of the immature stages of Spodoptera albula (Walker 1857) under controlled conditions (25 ± 1°C, 70 ± 10% RH and 14 hour photophase) and to gather information about their larval host plants. For this purpose, a new rearing method and artificial diet was employed and validated. The viability of the egg, larval, pupal and pre-pupal stages was 94.54, 97.33, 93.84 and 92.34%, respectively. The average duration of the egg, larval, pupal and pre-pupal stages was 4.14, 16.37, 1.69, and 9.34 days, respectively. During the larval stage, 80.85% of females and 93.99% of males passed through six and remaining through seven instars, with significant larval protandry. The larvae that developed through six and seven instars exhibited a mean growth rate of 1.58 and 1.48, respectively. Fifty five host plant species belonging to 29 families are listed. The female pupae were significantly larger, exhibiting protogyny. Both the rearing methods as well as the larval diet proved adequate, providing more detailled observations of the biological cycle, especially the larval stage, and resulting in an overall survival of almost 80%.

THE EGGS AND LARVAE OF CRYPTOCEPHALUS QUADRUPLEX NEWMAN AND C. VENUSTUS FABRICIUS, WITH A KEY TO THE KNOWN IMMATURE STAGES OF THE NEARCTIC GENERA OF CRYPTOCEPHALINE LEAF BEETLES (COLEOPTERA: CHRYSOMELIDAE)

1986 ◽  
Vol 118 (2) ◽  
pp. 97-111 ◽  
Author(s):  
Laurent LeSage
Keyword(s):  
Leaf Litter ◽  
Larval Stage ◽  
Head Capsule ◽  
Oviposition Period ◽  
Immature Stages ◽  
Leaf Beetles ◽  
Eggs And Larvae

AbstractThe eggs and larvae of Cryptocephalus quadruplex Newman and C. venustus Fabricius are described and illustrated. Both species very likely overwinter in the larval stage. The adults emerge from the last week of May to mid-June. Before mating they feed on plants for about a week. The oviposition period is quite extended and lasts from mid-June to the end of July. The eggs are laid singly in the leaf litter. The hatching period was 10–15 days in the laboratory. The larvae develop through 5 instars and feed exclusively on dead or decaying leaves of various plants. By the end of September most of them have grown to the 4th instar, some to the 5th. At this moment they stop feeding and move deeper in the leaf litter for overwintering. The 1st instar is easily recognized by the presence of the egg bursters on meso- and metathorax, the large flattened-papillate setae of the head capsule, and the presence of 2 pairs of spiniform setae on tibiae. In the following instars the size varies as well as the number of spiniform setae on the tibiae and the number of secondary clubbed setae on the pronotum.

The lifespans of the potential biological control agents in the family Blattisociidae (Acari: Mesostigmata)

Zoosymposia ◽  
2021 ◽  
Vol 20 ◽  
Author(s):  
NA ZHANG ◽  
LIXIA XIE
Keyword(s):  
Biological Control ◽  
Low Temperature ◽  
Development Time ◽  
Prey Species ◽  
Immature Stages ◽  
Biological Control Agents ◽  
The Family ◽  
Main Factors

This review summarized the duration of immature stages (egg to adult) and adult lifespans of the mites in the family Blattisociidae based on literature published from 1965 to 2021. We found 57 articles with information on the ecology and biology of the blattisociids. The lifespan and duration of immature stages were only reported in 16 out of 400 species. Most of the experiments were conducted in the laboratory, which may not accurately reflect their lifespans in nature. Temperatures, diets, and pesticides are the main factors that affect the lifespan of blattisociids. Low temperature could significantly prolong the lifespan and duration of immature stages of blattisociids. Different prey species or stages also affect the development time and lifespan of blattisociids significantly.

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