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Scanning electron microscopy of the larval instars of Cochliomyia hominivorax
Medical and Veterinary Entomology, 1993Abstract. Descriptions are given of the morphological features of laboratory‐reared first to third larval stages of Cochliomyia hominivorax. The pseudo‐cephalon, spines and papillae of the segments, and the anterior and posterior spiracles of all three larval stages were ...
A C, Leite, J D, Guevara
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INSTAR DIFFERENTIATION IN LARVAL CHIRONOMIDAE (DIPTERA)
The Canadian Entomologist, 1974AbstractExamination of the most commonly used criteria for separating instars in larval chironomids, based on a study of 29 species from three subfamilies in Marion Lake, British Columbia, revealed that only head capsule width or length is suitable. Most chironomids appear to have four larval instars.
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Characterization of larval instars of artemisia weevil, Adosomus sp.
Forestry Studies in China, 2009The artemisia weevil, Adosomus sp., has become an important wormwood (Artemisia ordosoca and A. sphaerocephala) pest in recent years in Ningxia Province, China. The number of larval instars should be determined before further studies on its life history, biology and integrate management of pest (IMP).
Jian-wei Wang +4 more
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Does the insect brain count larval instars?
Experientia, 1979It has been presumed on the basis of transplantations of the neuroendocrine complex that the ‘counting of instars’ mechanism lies within the brain. The brain is programmed already in the 3rd instar to inactivate the corpus allatum. The inactivation sets in in the late penultimate (4th) instar.
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Size compensation in moth larvae: attention to larval instars
Physiological Entomology, 2010Environmental perturbations such as starvation and poor diet often prevent animals from attaining their optimal sizes. When the perturbation has a transient character, compensatory responses are expected in terms of faster growth or a prolonged developmental period.
TOOMAS ESPERK, TOOMAS TAMMARU
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Cannibalism and early instar survival in a larval damselfly
Oecologia, 1994Cannibalism by larval damselflies late in larval development on larvae a few instars smaller has been widely documented. I examine here the survival of eggs oviposited near the end of the flight season of adult Enallagma boreale in the presence and absence of potential cannibals, individuals that hatched from eggs earlier in the season, over an ...
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Number Of Larval Instars Of Simulium (Psilopelmia) Haematopotum
2002(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Coscarón Arias, Cecilia L. +1 more
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The Larval Instars of Wohlfahrtia Pattoni (Diptera: Calliphoridae: Sarcophaginae)
Journal of Medical Entomology, 1973Wohlfahrtia pattoni was colonized in the laboratory from pupae collected in Sharjah, Sharjah State. Like other members of the genus this fly is ovoviviparous but it is not known whether larvae are deposited on living animals or dead organic matter. In 6-way choice trials in the laboratory using lean meat as a larviposition substrate, females preferred ...
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Juvenoid-induced supernumerary larval instars in certain stored grain insects
Proceedings: Animal Sciences, 1983InEphestia cautella, Corcyra cephalonica andTribolium castaneum, multiple and viable supernumerary larval moults are brought about by treatment of the last larval instar with juvenoids. The normal last larval instar responds to such treatment throughout its life but the number of extra moults is age and dose-related.
U S Srivastava, R C Srivastava
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Recognition of Five Larval Instars in Conotrachelus perseae (Coleoptera: Curculionidae)
Journal of Entomological Science, 2019Head capsule widths of Conotrachelus perseae Barber (Coleoptera: Curculionidae) larvae extracted from avocado, Persea americana Mill. cv. Fuerte, were measured by computerized imagery. Head capsule widths ranged from 212 to 1,562 µm and, according to an analysis of frequency distribution using the HCAP program and Dyar's rule, formed five well-defined ...
Á. Castañeda-Vildózola +5 more
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