BIOLOGY AND IMMATURE STAGES OF LEUCOPIS PIMCOLA AND CHAMAEMYIA POLYSTIGMA (DIPTERA: CHAMAEMYIIDAE)

1973 ◽  
Vol 105 (11) ◽  
pp. 1443-1452 ◽  
Author(s):  
Thomas P. Sluss ◽  
B. A. Foote
Keyword(s):  
Lolium Perenne ◽  
Feeding Habits ◽  
Life Cycles ◽  
Pine Bark ◽  
Larval Feeding ◽  
Immature Stages ◽  
Larval Instars ◽  
Larval Stages ◽  
Rye Grass ◽  
Two Generations

AbstractThe life cycles and larval feeding habits of Leucopis (Neoleucopis) pinicola Malloch and Chamaemyia polystigma Meigen were studied in northeastern Ohio. The larval stages of L. pinicola are predators of the pine bark aphid, Pineus strobi (Hartig) (Homoptera: Adelgidae). Probably there are only two generations a year, and overwintering occurs as mature larvae or pupae that are in diapause. Larvae of C. polystigma prey on the blue grass mealybug, Heterococcus nudus Green (Homoptera: Pseudococcidae), that infests perennial rye grass, Lolium perenne L. This species has three generations a year and overwinters as diapausing mature larvae and pupae.The eggs, three larval instars, and puparia of both species are described and illustrated.

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.

scholarly journals On the immature stages of the crazy ant Paratrechina longicornis (Latreille 1802) (Hymenoptera: Formicidae)

Zootaxa ◽  
2007 ◽  
Vol 1503 (1) ◽  
pp. 1-11 ◽  
Author(s):  
EDUARDO GONÇALVES PATERSON FOX ◽  
DANIEL RUSS SOLIS ◽  
CARLOS MASSURETTI DE JESUS ◽  
ODAIR CORREA BUENO ◽  
ANTONIO TENIYOSHI YABUKI ◽  
...  
Keyword(s):  
Original Description ◽  
Immature Stages ◽  
Larval Instars ◽  
Larval Stages ◽  
The World ◽  
Paratrechina Longicornis ◽  
First Time ◽  
Evident Variation ◽  
Third Instar Larvae

The ant Paratrechina longicornis is a cosmopolitan ant species that has been accidentally spread by commerce around the world, and now is a pest of houses and hospitals. The morphology of its larval stages has been previously described without knowledge of the number of instars. The present study revisits the original description of P. longicornis larvae by adding differences observed among the three larval instars. Compared to other Paratrechina species studied so far, P. longicornis presents smaller larvae, less evident variation in mandible morphology, and clear variation in the morphology of head hairs between the analysed specimens of the second and third instar larvae. Ultrastructural images of the eggs, larval spiracle ornamentation, and pupae are also presented for the first time.

A Taxonomic study of two species of Thiotricha Meyrick (Lepidoptera: Gelechiidae), from southwestern Japan, with notes on the biology of their immature stages

Zootaxa ◽  
2021 ◽  
Vol 4980 (2) ◽  
pp. 331-354
Author(s):  
KHINE MON MON KYAW ◽  
TATSUYA UEDA ◽  
SADAHISA YAGI ◽  
TOMOKO OKAMOTO ◽  
MIN WANG ◽  
...  
Keyword(s):  
Feeding Habits ◽  
Mainland China ◽  
Larval Feeding ◽  
Taxonomic Study ◽  
Immature Stages ◽  
Southeastern Part ◽  
Lumnitzera Racemosa

The taxonomy and biology of the immature stages of two gelechiid species of Thiotricha Meyrick, 1886, found in the southeastern part of the Sino-Japanese region is presented. Thiotricha lumnitzeriella Kyaw, Ueda & Hirowatari sp. nov., from islands in southwestern Japan is described. The larva of this species feeds as a portable case maker on Lumnitzera racemosa Willd. (Combretaceae). Thiotricha gemmulans Meyrick, 1931 originally described from India is newly recorded from Japan, mainland China, and Thailand. This species feeds as a portable case maker on Glochidion zeylanicum var. lanceolatum (Hayata) and G. zeylanicum var. zeylanicum (Gaertn.) A. Juss (Phyllanthaceae). Thiotricha acrophantis Meyrick, 1936 is newly synonymized with T. gemmulans.                Images of the adults of Thiotricha lumnitzeriella sp. nov. and T. gemmulans including genitalia, and images and illustrations of the larval chaetotaxy and pupa for both species are provided. Larval feeding habits are described in detail. 

The Separation of Conwentzia pineticola End. from Conwentzia psociformis (Curt.), and Notes on their Biology

1951 ◽  
Vol 42 (3) ◽  
pp. 555-564 ◽  
Author(s):  
Elsie Collyer
Keyword(s):  
Life History ◽  
Feeding Habits ◽  
Distinct Species ◽  
Immature Stages ◽  
Reliable Determination ◽  
Larval Stages ◽  
The Past ◽  
First Time

Conwentzia psociformis (Curt.) and Conwentzia pineticola End. differ as adults in only two characters, and since there are variable and intermediate forms occur, reliable determination is sometimes impossible. In the past, these two species have often been regarded as two forms of the same species.The immature stages of C. pineticola are, however, very different from those of C. psociformis and show that the two are distinct species and can readily be separated on larval characters. The larval stages and egg of C. pineticola are described for the first time, and an account of its life history given.The feeding habits of these two species are described, and mention is made of two other Coniopterygid species that occur in orchards.

Biology and immature stages of Dichetophora obliterata, a snail-killing fly (Diptera: Sciomyzidae)

1987 ◽  
Vol 65 (7) ◽  
pp. 1675-1680 ◽  
Author(s):  
Jean-Claude Vala ◽  
Christine Caillet ◽  
Charles Gasc
Keyword(s):  
Life Cycle ◽  
Feeding Behavior ◽  
Group Iv ◽  
Flight Period ◽  
Larval Feeding ◽  
Immature Stages ◽  
Larval Instars

We present descriptions of the egg, the three larval instars, and the puparium, and also some information on the biology of Dichetophora obliterata, a strictly terrestrial Sciomyzidae (Diptera). This life cycle is the first that has been published for a species in this genus. We provide information on the flight period of adults, the duration of preoviposition and all immature stages, and the larval feeding behavior. By all these characteristics, D. obliterata (palearctic) is placed in phenologic group IV of Berg et al. (Berg, C. O., Foote, B. A., Knutson, L. V., Barnes, J. K., Arnold, S. L., and Valley, K. 1982. Mem. Entomol. Soc. Wash. 10: 15–36).

scholarly journals Lifecycle and fecula measurements of Cheritra freja (Lepidoptera: Lycaenidae), as relevant to the different larval stages

2017 ◽  
Vol 9 (3) ◽  
pp. 10011
Author(s):  
Tharaka Sudesh Priyadarshana ◽  
Ishara Harshajith Wijewardhane
Keyword(s):  
New Method ◽  
Food Plants ◽  
Immature Stages ◽  
Larval Instars ◽  
Larval Stages

Here we present some hitherto undescribed details of the habitat, lifecycle, immature stages and a new method for finding different larval stages of Cheritra freja by analyzing the fecula measurements of various larval instars. This study should be very useful in helping researchers to find larvae and new food plants.

MAJOR FACTORS IN SURVIVAL OF THE IMMATURE STAGES OF FENUSA PUSILLA IN SOUTHWESTERN QUEBEC

1970 ◽  
Vol 102 (8) ◽  
pp. 995-1002 ◽  
Author(s):  
H. H. Cheng ◽  
E. J. LeRoux
Keyword(s):  
Population Dynamics ◽  
Leaf Miner ◽  
Immature Stages ◽  
Key Factors ◽  
Larval Stages ◽  
Fenusa Pusilla ◽  
Two Generations ◽  
Key Factor ◽  
Major Factors ◽  
Old Trees

AbstractIntensive studies on the population dynamics of the birch leaf miner, Fenusa pusilla (Lepeletier), were carried out in two stands of blue birch at the Morgan Arboretum, Macdonald College, Que., from 1964 to 1966. Life tables for nine and two generations, respectively, showed that mortality of the immature stages was lower on 3- to 5-year-old trees than on 9-year-old trees. The analysis of successive age-interval survivals in relation to generation survival revealed that predation during the late larval stages was the key factor in generation survival of the insect on the younger trees. Desiccation of the leaf during the early larval stages along with predation were key factors on the older trees.

Larval development of Metapenaeopsis barbata (de Haan, 1844) (Crustacea: Decapoda: Penaeidae)

1997 ◽  
Vol 48 (5) ◽  
pp. 401 ◽  
Author(s):  
Jesse D. Ronquillo ◽  
Toshio Saisho
Keyword(s):  
Morphological Characteristics ◽  
Larval Feeding ◽  
Feeding Apparatus ◽  
Filter Feeder ◽  
Closely Related Species ◽  
Larval Stages ◽  
Chaetoceros Gracilis ◽  
The Family ◽  
Gravid Females ◽  
Natural Means

Gravid females of Metapenaeopsis barbata spawned in the laboratory by natural means and the larvae were reared from hatching to postlarval stage at 27·0–29·8˚C and 33·5–34·5 g kg -1 salinity. The larvae metamorphosed into first postlarvae, with a survival rate of up to 98·4%, after about 10 days following hatching and subsistence on only an algal diet of Tetraselmis tetrathele and Chaetoceros gracilis. Six naupliar stages, three protozoeal stages, three mysis stages and the first postlarval stage are described and illustrated. On the basis of morphological characteristics, larval stages of M. barbata can be distinguished from similar stages of closely related species in the family Penaeidae. As inferred from the morphology of the larval feeding apparatus, M. barbata is still a filter-feeder even at the first postlarval stage.

scholarly journals New records of larval hostplants for ithomiinae butterflies (Nymphalidae)

1999 ◽  
Vol 59 (3) ◽  
pp. 455-459 ◽  
Author(s):  
F. A. P. L. COSTA
Keyword(s):  
Present State ◽  
New Records ◽  
Feeding Habits ◽  
Minas Gerais ◽  
Larval Feeding

Seventeen new records of larval hostplants are given for Ithomiinae butterflies (Lepidoptera: Nymphalidae) in southeastern Minas Gerais, and one in Brasília, DF. At the present state of knowledge, generalizations about larval feeding habits of these insects may be premature.

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