scholarly journals Laboratory studies on larval feeding habits of Amara macronota (Coleoptera: Carabidae: Zabrini)

2007 ◽  
Vol 42 (4) ◽  
pp. 669-674 ◽  
Author(s):  
Kôji Sasakawa
Keyword(s):  
Feeding Habits ◽  
Larval Feeding ◽  
Laboratory Studies

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.

Some recent Observations on Busseola fusca (Fuller) (Lep., Noctuidae) in Southern Rhodesia

1960 ◽  
Vol 50 (4) ◽  
pp. 809-819 ◽  
Author(s):  
C. N. Smithers
Keyword(s):  
Feeding Habits ◽  
Light Trap ◽  
Busseola Fusca ◽  
Pupal Stage ◽  
Dry Season ◽  
Egg Laying ◽  
Food Plants ◽  
Larval Feeding ◽  
Appreciable Change ◽  
Southern Rhodesia

The life-history and seasonal cycle of the Lepidopterous borer, Busseola fusca (Fuller), the most serious pest of maize in Southern Rhodesia, have been studied there.There are two generations in the year, the majority of the full-grown larvae of the second entering diapause, in which condition the dry season is passed in the maize stem, but a proportion of the second-generation consists of short-cycle individuals that give rise to moths irregularly during the dry season.In the field, the egg stage lasts about 7–11 days, according to the time of year. In the laboratory, there are six, very occasionally seven, larval instars in the first generation, occupying about 37 days, and the pupal stage lasts about 17 days. In the second (diapausing) generation there may be one or two additional moults without appreciable change in size, and there is considerable variation in the length of instars and in the date of entry into diapause, but by mid-June the bulk of the larvae that will survive are in diapause. The majority of diapause larvae pupate in early November, the pupal stage lasting about 23 days.The feeding habits of the larvae are described and reference is made to other food-plants.The length of life of the adult, in cage conditions, averages 6–7 days, but there is great variation. When provided with diluted honey, adults were not observed to feed, and absence of such food did not appear to impair egg-laying. The sex ratio was 1:1, but in catches at a light-trap the ratio of males to females was 5:1. Copulation takes place shortly after emergence, and oviposition may begin within 24 hours of emergence.The average number of eggs laid per female in cages was 360 over an average of four days, one female laying 1,032. Several batches of eggs may be laid in one night. A single mating appears to be sufficient, but males may copulate with more than one female. Eggs laid by virgin females do not hatch.Diapause is thought to be induced by larval feeding on drying food. Continuous rearing of non-diapause generations can be achieved by feeding the larvae on fresh, green maize. Similarly, in the field, irrigated out-of-season maize will support non-diapause generations and constitute a source of infestation that may render ineffectual the normal routine destruction of all plants of the previous dry-land farming season.The main parasite is the Tachinid, Sturmiopsis parasitica (Curr.), which may destroy more than 33 per cent, of the larvae in either generation.

POTENTIAL OF ANTIFEEDANTS TO CONTROL LARVAL FEEDING OF SELECTED NEODIPRION SAWFLIES (HYMENOPTERA: DIPRIONIDAE)

1976 ◽  
Vol 108 (11) ◽  
pp. 1137-1144 ◽  
Author(s):  
J. N. All ◽  
D. M. Benjamin
Keyword(s):  
Pinus Banksiana ◽  
Feeding Habits ◽  
Field Tests ◽  
Field Studies ◽  
Jack Pine ◽  
Larval Feeding ◽  
Pine Sawfly ◽  
European Pine Sawfly ◽  
Feeding Development ◽  
Laboratory Bioassays

AbstractAntifeedants for controlling larval feeding of several Neodiprion sawflies were evaluated in laboratory and field studies. Nine commercially available insect antifeedants and a hexane extract of the juvenile foliage of jack pine, Pinus banksiana Lambert, were tested on larvae of six species. In laboratory bioassays larvae exhibited varying sensitivity to antifeedants; generally species with monophagous or restricted oligophagous feeding habits were most sensitive. In the laboratory the Swaine jack pine sawfly, Neodiprion swainei Middleton, had severely restricted feeding, development, survival, and fecundity. Triphenyltin hydroxide was toxic to N. swainei and to European pine sawfly, N. sertifer (Geoffroy). In field tests certain antifeedants disrupted N. swainei feeding and development. The colonial behavior of larvae often was disrupted and solitary larvae fell from trees or wandered on twigs. Colony disruption by most antifeedants was temporary and many larvae resumed feeding.

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. 

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