Description of life cycle and preimaginal stages of Alecton discoidalis Laporte, 1833 (Coleoptera: Lampyridae) under laboratory conditions

Zootaxa ◽  
2020 ◽  
Vol 4816 (1) ◽  
pp. 81-91 ◽  
Author(s):  
ORMAILY MADRUGA ◽  
MARC A. BRANHAM
Keyword(s):  
Egg Production ◽  
Body Shape ◽  
Adult Stage ◽  
Widespread Species ◽  
Larval Instars ◽  
General Body ◽  
Laboratory Conditions ◽  
Preimaginal Stages ◽  
Terrestrial Snails ◽  
Western Half

Alecton discoidalis Laporte, 1833 is the most widespread species of the only firefly genus endemic to Cuba. It is commonly found in limestone landscapes across the western half of the country. Larvae of A. discoidalis were collected at Pan de Matanzas and reared through the adult stage under laboratory conditions. Larvae were fed mainly terrestrial snails from the families Potamiidae and Helicinidae. Alecton discoidalis underwent between four and eight larval instars. Females had more larval instars than males likely due to the need to gain more body mass for egg production. Eggs, larvae and pupae are described and illustrated, with emphasis on general body shape, as well as details of the larval head, antennae and mouthparts. Alecton discoidalis females are both brachypterous and physogastric. 

The Hydraenidae of Cuba (Insecta: Coleoptera) II: Morphology of preimaginal stages of six species and notes on their biology

Zootaxa ◽  
2017 ◽  
Vol 4238 (4) ◽  
pp. 451 ◽  
Author(s):  
ALBERT DELER-HERNÁNDEZ ◽  
JUAN A. DELGADO
Keyword(s):  
Instar Larva ◽  
Morphological Characters ◽  
Larval Instars ◽  
First Instar ◽  
Preimaginal Stages ◽  
First Time ◽  
Third Instar Larvae

Preimaginal stages of the six species of Hydraenidae presently known from Cuba were obtained by rearing adults in the laboratory. Eggs of Hydraena perkinsi Spangler, 1980, H. decui Spangler, 1980 and H. franklyni Deler-Hernández & Delgado, 2012 are described and illustrated for the first time. The first instar larva of Gymnochthebius fossatus (LeConte, 1855) is redescribed, adding some new remarkable morphological characters including what could be the first abdominal egg-burster reported for this family. All larval instars of H. perkinsi, H. guadelupensis Orchymont, 1923 and Ochthebius attritus LeConte, 1878 are described and illustrated for the first time, with a special emphasis on their chaetotaxy. The second instar larva of G. fossatus along with first and third instar larvae of H. decui and H. franklyni are also studied for the first time. The pupal morphology and vestiture of a species belonging to the genus Hydraena are described for the first time, based on the pupa of H. perkinsi. Biological notes for several preimaginal stages of the studied species are also given. 

scholarly journals Effects of Insecticides for Controlling Hogplum Beetle Podontia 14-punctata under Laboratory and Field Conditions

2015 ◽  
Vol 8 (1) ◽  
pp. 79-83
Author(s):  
MJ Uddin ◽  
MMH Khan
Keyword(s):  
Natural Resources ◽  
Field Condition ◽  
Field Trial ◽  
Adult Stage ◽  
Control Treatment ◽  
Larval Instars ◽  
Significant Difference ◽  
Laboratory Trial ◽  
The Mean ◽  
Hog Plum

Experiments on hogplum beetle, Podontia 14-punctata were carried out to find out the suitable insecticide(s) with appropriate dose(s) for suppressing both larvae and adults. Results revealed that the highest mortality (100%) was found in 1st instar larvae after 24 hours at each dose of superior 505EC and the lowest mortality was in T4 treated leaves. The highest mortality was also found in 2nd, 3rd, 4th and adult stages of hog-plum beetle by T5 and T6 treatments. No mortality was observed in control treatment in laboratory trial. The mean number of larvae ranged from 1.5 to 7.6 per square meter of quadrate at one week after last spray. No significant difference was observed among treatments regarding percent leaf infestation at one day before 1st spray. The percent leaf infestation ranged from 5.01 to 9.82 at one week after last spray. The lowest percent (5.87%) leaf infestation was found in T6 treated plants while the highest percent (15.76%) leaf infestation was found in untreated control plants. The highest mortality was observed in T5 and T6 treated plants at all larval instars and no significant difference was found between two doses of each insecticide under field condition. The results of field trial also revealed that the minimum dose (0.75 ml L-1 of water) of Superior 505 EC is sufficient to suppress the field population of larvae and adults of Podontia 14-punctata effectively. Finally, it may be concluded that the highest mortality was found in all larval instars and adult stage of hog-plum beetle after 24 hours at each dose of superior 505 EC (T5 and T6 treatments) both in laboratory and field trials.J. Environ. Sci. & Natural Resources, 8(1): 79-83 2015

scholarly journals The efficiency of Paecilomyce farinosus as biocontrol to larve stage on second ad sixith instar larve of Trogoderma granarium (Everts)

2013 ◽  
Vol 10 (4) ◽  
pp. 1096-1101
Author(s):  
Baghdad Science Journal
Keyword(s):  
Larval Instar ◽  
The Other ◽  
Biocontrol Agents ◽  
Larval Instars ◽  
Paecilomyces Farinosus ◽  
Trogoderma Granarium ◽  
Laboratory Conditions ◽  
Other Hand ◽  
Laboratory Results ◽  
Treatment Concentration

The present study was conducted to determine the pathogenicity of Paecilomyces farinosus as biocontrol agents against Tragoderma granarium (khapra) under laboratory conditions with three concentrations ( 2.8 x 108 , 2.8 x 106 ,2.8 x104 spores/ ml). The laboratory results revealed that fungi showed it's higher pathogencity to larve stage on 2nd instar and 6th instar , although their capability differs according to the fungi concentrations this fungi caused higher mortality of 2nd larval instar 70% and 60% ,55% when it was used at concentrations 2 .8 x 106 ,2.8 x104 spores/ ml respectively. On the other hand on 6th larval instars 55% , 35% , 30% at concentrations ( 2.8 x 108 , 2.8 x 106 ,2.8 x104 spores/ ml) respectively, and the highest rate of distortions in the adult insects from the 2nd instar treatment than the adult insects from the 6th instar treatment concentration of this fungi.

Some aspects of the life cycle of the tick ixodes pilosus under laboratory conditions

1991 ◽  
Vol 62 (1) ◽  
pp. 15-16 ◽  
Author(s):  
Y. Rechav
Keyword(s):  
Life Cycle ◽  
Egg Production ◽  
Feeding Time ◽  
Laboratory Conditions ◽  
Preoviposition Period ◽  
The Mean

Some aspects of the life cycle of the tick Ixodes pilosus were studied under laboratory conditions. The preoviposition period was 7,2 ± 0,6 d. Maximum egg production was on Day 4 after oviposition commenced, with total egg production of 2 395 ± 128,7 eggs per female. The mean feeding time of larvae was 3,3 ± 0,1 d. The life cycle could not be completed due to the specific requirements of this species.

Description of last instar and pupa of Pyropyg nigricans (Coleoptera: Lampyridae, Photinini) and comparison with larvae of other Photinini genera

2001 ◽  
Vol 133 (2) ◽  
pp. 155-164 ◽  
Author(s):  
Miguel Archangelsky ◽  
Marc A. Branham
Keyword(s):  
Body Shape ◽  
Head Capsule ◽  
Color Pattern ◽  
The Other ◽  
General Body

AbstractThe last instar and pupa of Pyropyga nigricans (Say, 1823) are described, illustrated, and compared to those of Pyropyga modesta Green, 1961; these species differ in the color pattern of the pronotum and abdominal tergites, and the morphology of the maxilla and labium. Larvae of the genus Pyropyga Motschulsky, 1852 are compared to those of the genera Lamprohiza Motschulsky, 1853, Lucidota LeConte, 1833, and Phosphaenus Laporte, 1833 (all belonging to the tribe Photinini but to different subtribes); on the basis of general body shape and morphology of the head capsule, antennae, and mouthparts, larvae of the genus Pyropyga seem more closely related to those of the genus Lucidota than to those of the other two genera.

The Helminth Parasites of Embiotocid Fishes. III. A New Species of the Genus Cucullanellus Törnquist, 1931 (Nematoda: Cucullanidae) from the Shiner Perch, Cymatogaster aggregata Gibbons

1974 ◽  
Vol 31 (2) ◽  
pp. 205-209 ◽  
Author(s):  
Gordon L. Walder ◽  
Hisao P. Arai
Keyword(s):  
British Columbia ◽  
New Species ◽  
Body Shape ◽  
Helminth Parasites ◽  
General Body ◽  
A New Species

Cucullanellus kanabus sp. nov., parasitic in the intestine of the embiotocid fish, Cymatogaster aggregata Gibbons from Departure Bay, British Columbia is described and illustrated. The main features distinguishing C. kanabus from previously described species in the genus are the arrangement of the caudal papillae in males, the general body shape and various measurements. The species considered referable to Cucullanellus Törnquist 1931 are listed.

The influence of population density on the number of eggs laid by females of Cardiaspina albitextura (Psyllidae)

1963 ◽  
Vol 11 (2) ◽  
pp. 190 ◽  
Author(s):  
LR Clark
Keyword(s):  
Egg Production ◽  
Adult Stage ◽  
Limiting Factor ◽  
Severe Damage ◽  
Population Densities ◽  
Experimental Conditions ◽  
Nymphal Development ◽  
The Mean ◽  
Peak Abundance ◽  
Oviposition Sites

Field observations and experiments suggest that crowding during the period of nymphal development does not greatly affect the mean number of eggs laid by Cardiaspina albitextura females. Under experimental conditions, crowding in the adult stage on foliage undamaged by nymphs resulted in reduction of the mean number of eggs laid, the supply of favourable food being probably the limiting factor. In association with increase in the number of adults per shoot, mean egg production declined at a progressively decreasing rate. At the highest population densities tested, the mean number of eggs laid per female was approximately one-third to one-fifth of the number laid by uncrowded females. Both at low and high population densities, the mean number of eggs laid per female on previously unoccupied foliage was about twice as high as on foliage which had been occupied previously by numerous other adults of the same psyllid generation. At times of peak abundance in areas of outbreak, the foliage damage caused during the period of nymphal development greatly limits both the quantity of favourable food and the number of oviposition sites available when C. albitextura reaches the adult stage. The experimental results suggest that the crowding of adults which occurs on the small amount of foliage that escapes very severe damage by nymphs contributes towards the observed limitation of egg production. However, the scattered distribution of such foliage and the poor dispersal powers of C. albitextura females probably play a more important part in determining the very low mean number of eggs laid per female reaching the adult stage. It appears that many females fail to find favourable foliage and consequently lay scarcely any eggs.

On the systematic position of Dino Loman and Toccolus Roewer (Opiliones, Laniatores, Epedanidae), with the description of a new species from western Java, Indonesia

Zootaxa ◽  
2008 ◽  
Vol 1932 (1) ◽  
pp. 61-68 ◽  
Author(s):  
ADRIANO B. KURY
Keyword(s):  
New Species ◽  
Body Shape ◽  
Systematic Position ◽  
Related Genus ◽  
General Body ◽  
Se Asia ◽  
Fourth Species ◽  
A New Species

A new species, Toccolus javanensis sp. nova, is described from a rainforest in Gunung Puncak, western Java, Indonesia. It is the fourth species of the genus, which was hitherto known only from continental SE Asia. It possesses a low ocularium and general body shape strongly resembling Dino weberi Loman from Sumatra. The relationships of Toccolus are discussed and the closely related genus Dino Loman is transferred from Podoctinae (Podoctidae) to Epedaninae (Epedanidae).

scholarly journals Amblyomma nodosum (Neumann, 1899): observations on life cycle under laboratory conditions

2015 ◽  
Vol 24 (3) ◽  
pp. 357-360 ◽  
Author(s):  
Michele da Costa Pinheiro ◽  
Elizabete Captivo Lourenço ◽  
Iwine Joyce Barbosa de Sá-Hungaro ◽  
Kátia Maria Famadas
Keyword(s):  
Life Cycle ◽  
Relative Humidity ◽  
Environmental Conditions ◽  
Oryctolagus Cuniculus ◽  
Adult Stage ◽  
Immature Stages ◽  
Experimental Conditions ◽  
Laboratory Conditions ◽  
Natural Hosts

The natural hosts of Amblyomma nodosum in the immature stages are a variety of birds and the anteater in the adult stage. However, so far no data have been published about this tick’s life cycle. To fill this gap, a record was made of its development under laboratory conditions. All the procedures were controlled in a BOD chamber set at 27±1 °C and 80±10% relative humidity and scotophase. The parasitic stages were raised on rabbits (Oryctolagus cuniculus Linnaeus, 1758), from which more than 50% of larvae and nymphs were recovered, although only a small portion performed ecdysis. The adults did not fixed on the rabbits, which suggests that the experimental conditions were unsuitable for the requirements of this species. The data obtained here indicate that A. nodosum is highly dependent on its host and environment whereas under laboratory conditions and host chosen for the study was not obtained satisfactory results and new studies with different hosts and new environmental conditions should be elaborated.

scholarly journals Larval morphology ofMetaphycus flavusand its role in host attachment and larval cannibalism

2011 ◽  
Vol 101 (3) ◽  
pp. 365-372 ◽  
Author(s):  
A. Tena ◽  
A. Kapranas ◽  
G.P. Walker ◽  
F. Garcia-Marí ◽  
R.F. Luck
Keyword(s):  
Aqueous Medium ◽  
Fourth Instar ◽  
Larval Morphology ◽  
Sensory Organs ◽  
Larval Instars ◽  
Laboratory Conditions ◽  
Different Types ◽  
Aggressive Behaviours ◽  
Gustatory Sensilla

AbstractMetaphycus flavus(Howard) (Hymenoptera: Encyrtidae) is a facultatively gregarious endoparasitoid of soft scales (Hemiptera: Coccidae). When it develops in superparasitised hosts, the larvae often attack and consume brood mates six or more days post oviposition. Under our laboratory conditions (25±1°C and 14 hours of light followed by 18±1°C and ten hours of darkness in 50–70% R.H.),M. flavuseggs hatched three days after oviposition. Measurements of the mandibles and tentorium indicate there are four larval instars, andM. flavusreaches the fourth instar by day six post oviposition, and pupates on day eight. Thus, cannibalism amongM. flavuslarvae occurs during the fourth instar. During this instar,M. flavuslarvae separate from their attachment to the scale cuticle, to which they were tethered by a respiratory structure during the previous three larval instars. Once detached, they are free to move within the scale, which increases the probability of larval encounters and aggressive behaviours. Moreover, the mandibles of the fourth instar are better adapted for fighting than are those of the first three larval instars, since they are larger and more sclerotized. The cranium and mouthparts ofM. flavushave four different types of sensory organs, some of which are almost certainly olfactory, an unexpected function for a larva that presumably is surrounded by an aqueous medium where gustatory sensilla would seem to be more appropriate. The cranium also bears two pairs of what appear to be secretory pores.

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