scholarly journals The larval structures and bionomics of Idgia iriomoteana (Coleoptera: Prionoceridae)

2021 ◽  
pp. 427-434
Author(s):  
Makoto Asano
Keyword(s):  
Life Cycle ◽  
Larval Instar ◽  
Instar Larva ◽  
Adaptive Significance ◽  
Winter Dormancy ◽  
First Instar ◽  
Complete Life Cycle ◽  
The Family ◽  
In Captivity

The life cycle, bionomics and mature larval structures of the Japanese prionocerid species, Idgia iriomoteana Nakane, 1980 were investigated in captivity. The results showed that I. iriomoteana has the following characteristics: (1) the larval morph is less advanced in terms of miniaturization, and larvae pass seven larval molts before they pupate; (2) the life cycle is univoltine with summer, not winter, dormancy; (3) the first instar larvae are larger than the size of the egg, but foetomorphic larval instar (which is observed in the Melyridae: Malachiinae) is not shown. Based on comparison with melyrid species, the degree of miniaturization, dormancy behaviour, adaptation to the tropical and subtropical climates and the adaptive significance of a large first instar larva are all discussed. This study is the first to report the complete life cycle of a member of the family Prionoceridae.

The comparative morphology of the male and female postabdomen of the Australian Tachinidae (Diptera), with descriptions of some first-instar larvae and pupae

1988 ◽  
Vol 2 (1) ◽  
pp. 81 ◽  
Author(s):  
BK Cantrell
Keyword(s):  
Comparative Morphology ◽  
Instar Larva ◽  
Taxonomic Position ◽  
Specific Level ◽  
Male And Female ◽  
First Instar ◽  
New Information ◽  
The Family ◽  
First Time

The comparactive morphology of the male and female postabdomen of the Australian Tachinidae was studied in a survey which included 152 species of representative genera from all subfamilies except Dufouriinae. The value of the structure of the postabdomen for the higher classification of the family was ascertained, and new information gained which has allowed a better understanding of the correct taxonomic position of some problem groups of tachinids. It was possible to recognise suites of characters for each sex to define each subfamily, but this was not possible at tribal or generic levels in most groups. The male terininalia are diagnostic at specific level. The survey also allowed the discovery of, or confirmed, the reproductive habit of the included genera and provided information on the first-instar larva of 52 species, many of which larvae are described below for the first time. Characters of puparia which may have taxonomic value are discussed and illustrated.

The first larval description in the genus Diaphorocera Heyden (Coleoptera: Meloidae: Cerocomini): D. chrysoprasis Fairmaire

Zootaxa ◽  
2006 ◽  
Vol 1295 (1) ◽  
pp. 29 ◽  
Author(s):  
FEDERICA TURCO ◽  
ANDREA DI GIULIO ◽  
MARCO A. BOLOGNA
Keyword(s):  
Light Microscope ◽  
Instar Larva ◽  
Phylogenetic Placement ◽  
Laboratory Conditions ◽  
First Instar ◽  
The Family ◽  
First Time

The first instar larva of Diaphorocera chrysoprasis Fairmaire, 1863, a Western Saharan species, is described and figured for the first time. Adults of D. chrysoprasis were collected in Tunisia and larvae were reared ex ovo under laboratory conditions. Both egg and triungulin are described and illustrated by SEM and light microscope. The triungulin shows a campodeiform morphology, typical of non phoretic Meloinae. From the comparison between the first instar larvae of Cerocoma, the single other genus of the tribe Cerocomini whose larvae were known, and Diaphorocera, some distinctive characters are recognised. The phylogenetic placement of the tribe Cerocomini within the family is discussed.

Ripiphorus caboverdianus sp. nov.—the first ripiphorid record from the Macaronesian volcanic islands (Coleaoptera: Ripiphoridae: Ripiphorinae)

Zootaxa ◽  
2011 ◽  
Vol 2792 (1) ◽  
pp. 51 ◽  
Author(s):  
JAN BATELKA ◽  
JAKUB STRAKA
Keyword(s):  
New Species ◽  
Hind Tibia ◽  
First Record ◽  
Ventral Surface ◽  
Instar Larva ◽  
Conservation Implications ◽  
First Instar ◽  
The Family ◽  
Dispersal Abilities ◽  
Volcanic Islands

Ripiphorus caboverdianus sp. nov. (Ripiphoridae, Ripiphorinae) from Boavista Island (Cape Verde archipelago) represents the first record of the family Ripiphoridae from the volcanic islands west of Africa and the first record of the genus Ripiphorus on an isolated volcanic archipelago worldwide. Its significance for our understanding of oceanic dispersal abilities of the subfamily Ripiphorinae is discussed. The new species is characterized by milky white elytra, hyaline hind wings and translucent membranous suture between dorsal and ventral surface of the first abdominal segments in both sexes. Female has a slightly curved hind tibia, 2× wider at the apex than at its base, and a slender, parallel-sided first metatarsomere, 5× as long as wide. Morphology of the free-living first instar larva is described; it is very similar to R. smithi Linsley & MacSwain, 1950. Behavioral observations of the adults and the first instar larvae in the type locality are given. Known hosts of the genus Ripiphorus are reviewed; possible host-association and conservation implications for the new species are discussed.

Larval morphology, biology and distribution of Agabus setulosus (Coleoptera: Dytiscidae)

1988 ◽  
Vol 19 (3) ◽  
pp. 381-391 ◽  
Author(s):  
Anders N. Nilsson
Keyword(s):  
Life Cycle ◽  
Abdominal Segment ◽  
Instar Larva ◽  
Larval Morphology ◽  
Northern Sweden ◽  
Swedish Population ◽  
The Third ◽  
Northern Fennoscandia ◽  
First Instar ◽  
First Time

AbstractA lectotype is designated for Agabus setulosus (J. Sahlberg, 1895), a rare rheophilous dytiscid known mainly from northern Fennoscandia. The larval instars are described for the first time, based on material from northern Sweden. The first-instar larva is characterized by the presence of two dorsal spines on each femur and a pair of mediodorsal setae on last abdominal segment; both characters are seemingly unique among Agabus. The third instar differs from all other Palaearctic Agabus species in the complete sclerotization of the ring-like abdominal segment 6. The biology of A. setulosus is described from a Swedish population; semivoltine life cycle with overwintering eggs laid in summer followed by adult overwintering prior to breeding is suggested.

scholarly journals Observational developments of the culture of big-belly seahorse, Hippocampus abdominalis (Lesson, 1827): A conservation effort for the future

2019 ◽  
pp. 08-13
Author(s):  
Mohamad Saupi Ismail ◽  
Chee Kong Yap
Keyword(s):  
Life Cycle ◽  
First Generation ◽  
Survival Rates ◽  
Culture Technique ◽  
Significant Finding ◽  
Growth And Survival ◽  
Complete Life Cycle ◽  
The Future ◽  
In Captivity ◽  
Hippocampus Abdominalis

The objective of the present study was to document the growth and survival rates of Hippocampus abdominalis, beginning from captive-born to adulthood, and finally to the complete life cycle. The most significant finding from this culture study was that, after day 193, the life cycle of first generation of captive-born H. abdominalis in AkuaTAR was successfully observed. It is claimed that this is the first successful life cycle in captivity and production of the next generation of H. abdominalis in Malaysia. Our finding was obviously better because the survival rate was significantly higher when compared to those previously reported for this seahorse species. In short, the present observational study presented a simple culture technique that can produce optimum growth and survival through to adult stage of seahorse H. abdominalis. Hence, the present finding is important for conservation of seahorse H. abdominals in the future. Keywords: Seahorse; Hippocampus abdominalis; Closure of life cycle; Conservation

scholarly journals Succession pattern of invertebrates on an unburied corpse of a cat suffering from cancer: A case study

2020 ◽  
Vol 76 (03) ◽  
pp. 6366-2020
Author(s):  
KATARZYNA CZEPIEL-MIL ◽  
ROBERT STRYJECKI ◽  
PIOTR LISTOS ◽  
DANUTA KOWALCZYK-PECKA ◽  
KAMIL WYDRA ◽  
...  
Keyword(s):  
Life Cycle ◽  
Forensic Entomology ◽  
Calliphora Vicina ◽  
Second Phase ◽  
Time Of Death ◽  
The Third ◽  
Third Phase ◽  
First Instar ◽  
The Family

Forensic entomology frequently assists forensic medicine in legal investigations. It makes it possible to estimate the time of death when a cadaver is recovered at a relatively advanced stage of decomposition. In criminalistics practice, unburied bodies are found the most commonly, and therefore the fauna of these cadavers is the best investigated. The aim of this study was to collect a succession of insects and other invertebrates occurring on an unburied corpse. The experiment was conducted on the carcass of a cat euthanized due to an advanced cancer process. The carcass was colonized by three phyla of animals: Annelidae, Mollusca, and Arthropoda. They belonged to 7 classes and 10 orders. The most diverse were Arthropoda. They were classified into 5 classes: Insecta, Diplopoda, Malacostraca, Entognata, and Arachnida, and into 8 orders: Julida, Isopoda, Collembola, Diptera, Coleoptera, Hemiptera, Araneae, and Acari. The fly species Calliphora vicina from the family Calliphoridae is of particular interest among the insects collected because it is one of the fundamental indicator species whose life cycle makes it possible to determine an approximate time of death. During the study it was noted that arthropods occurred in a certain pattern of succession, predictable in forensic entomology. The first group was Calliphora vicina (Calliphoridae, Diptera), which laid eggs. The next (second) group consisted of first-instar C. vicina larvae and insects feeding on these larvae, such as Philonthus tenuicornis (Staphylinidae, Coleoptera). The first stage of succession was the appearance of eggs of C. vicina. The second phase was the appearance of adult flies other than Calliphoridae and of accidental species, as well as beetles (e.g. Philonthus tenuicornis, Staphylinidae, Coleoptera) feeding on larvae of C. vicina. The third phase of succession was the appearance of all larvae stages of C. vicina that continued and finished their life cycle.

THE DEVELOPMENT AND HABITS OF LINSLEYA SPHAERICOLLIS (COLEOPTERA: MELOIDAE),

1977 ◽  
Vol 109 (3) ◽  
pp. 375-380 ◽  
Author(s):  
N. S. Church ◽  
G. H. Gerber
Keyword(s):  
Instar Larva ◽  
Natural Food ◽  
Fraxinus Pennsylvanica ◽  
Green Ash ◽  
Larval Instars ◽  
Wheat Stem Sawfly ◽  
First Instar ◽  
Common Lilac ◽  
In Captivity ◽  
Hatching Temperature

AbstractLinsleya sphaericollis (Say) adults have been seen in various parts of Manitoba, Saskatchewan, and Alberta from mid-June to mid-August, and will feed on western snowberry, Symphoricarpos occidentalis Hooker, species of wild and cultivated honeysuckle, Lonicera spp., common lilac, Syringia vulgaris L., and green ash, Fraxinus pennsylvanica Marsh. Field-collected adults lived for up to 8 weeks in captivity and laid on the average nearly one batch of eggs per female, with each batch containing an average of 50–51 eggs. The eggs were killed if exposed to temperatures of 0–10°C for 3 weeks, but endured these temperatures for a week. Embryonic development was slow, hatching was unusually irregular, and the best hatching temperature was 25°C. The incubation period was about 50% longer at 20°C, and hatching was inhibited at 15° and 30°C. The first instar larvae lived for up to 7 weeks without food. Some of the larvae fed on the eggs of Melanoplus sanguinipes (Fabricius) and M. bivittatus (Say), but the response was poor; they did not feed on ant larvae and pupae, or on the larvae of wheat stem sawfly (Cephus cinctus Norton). The data indicate that there are five vorant larval instars, that the typical meloid hypnothecal and non-vorant larval instars are omitted, that this insect overwinters as a fifth instar larva, that the natural food of the larvae is grasshopper eggs, and that the genus Linsleya should be included in the subtribe Epicautina.

XV.—Observations on the Life Cycle and Immature Stages of Culicoides circumscriptus Kieff. (Diptera, Ceratopogonidæ).

1960 ◽  
Vol 67 (4) ◽  
pp. 363-386 ◽  
Author(s):  
P. Becker
Keyword(s):  
Life Cycle ◽  
Salt Marsh ◽  
Salt Marshes ◽  
Oviposition Site ◽  
Immature Stages ◽  
Large Batch ◽  
First Instar ◽  
Laboratory Cultures ◽  
In Captivity ◽  
Two Generations

SynopsisThe immature stages of C. circumscriptus Kieff. are found in the mud of most Scottish salt marshes. The life cycle has been studied by means of laboratory cultures and by observation and periodic sampling at a salt marsh near Dumbarton. Data are given concerning the life cycle in the laboratory and out of doors. In the field there are two generations a year.In captivity the female lays a single large batch of eggs which adhere to the substrate by means of structures on the chorion. The eggs and the manner of oviposition and hatching are described. Descriptions of the larvae, supplementing those of previous authors are given. The first instar differs from older larvae in possessing a retractable prothoracic proleg, and is more sluggish in its movements, probably remaining near the oviposition site until the first ecdysis. Before pupation the larva comes to the surface. This is necessary for successful pupation, enabling the pupa to breathe and to form the buoyancy space. The pupa buries itself in the mud emerging only under flooded conditions to float on the surface or prior to ecdysis.

Change in Setal Pattern during Early Development of Eupolymnia Nebulosa (Polychaeta: Terebellidae) Grown in Simulated Natural Conditions

1988 ◽  
Vol 68 (4) ◽  
pp. 677-687 ◽  
Author(s):  
M. Bhaud
Keyword(s):  
Growth Rate ◽  
Life Cycle ◽  
Adaptive Significance ◽  
Mediterranean Coast ◽  
Evolutionary Relationships ◽  
Juvenile Growth ◽  
Natural Conditions ◽  
Morphological Organization ◽  
Yield Information ◽  
The Family

Eupolymnia nebulosa (Montagu) is a tubicolous worm with its body divided into two regions: thorax with biramous segments and three pairs of gills; abdomen with numerous segments lacking notopodia. The head bears grooved foodgathering tentacles which are not retractile into the mouth. The worm, a typical deposit feeder, lives in mucous tubes encrusted with sand. Although the family Terebellidae is homogeneous in terms of body organization and feeding ecology, there is a remarkable heterogeneity of developmental pattern. In the genera Lanice and Loimia, the life-cycle involves two pelagic stages separated by a short benthic larval stage; in other genera the development is mixed or direct (Bhaud et al. 1987; Pechenik, 1979; Caswell, 1981). It is important to study the development of representatives of the family which may reveal the adaptive significance of the different modes of development or may yield information about evolutionary relationships within the family. In several previous papers larval development (Bhaud & Grémare, 1988 a, b) and reproductive biology (Bhaud et al. 1987) of E. nebulosa have been reported from the Mediterranean coast. The present article reports observations on juvenile growth and morphological organization in natural conditions. This is the first step to growth rate studies in terms of temperature and food supply (Bhaud, 1988).

New species of Corotoca Schiødte, 1853 from South America and description of first instar larva

Zootaxa ◽  
2018 ◽  
Vol 4527 (4) ◽  
pp. 521
Author(s):  
BRUNO ZILBERMAN ◽  
SÔNIA A. CASARI
Keyword(s):  
New Species ◽  
South America ◽  
Related Species ◽  
Larval Instar ◽  
First Record ◽  
Instar Larva ◽  
First Instar ◽  
A New Species

Corotoca Schiødte, 1853 is a Neotropical genus of termitophile beetles, with five species. The establishment of this genus marks the first record of insects living associated to termites. A new species, Corotoca pseudomelantho Zilberman, sp. nov. from Brazil and Argentina, based on adult and first larval instar, is described and illustrated. The first instar larva of C. melantho Schiødte, 1853, a related species, is redescribed and illustrated. This is the first record of Corotoca species from Argentina. 

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