A taxonomic revision, biology and morphology of immature stages of the<i>Entedon sparetus</i>species group (Hymenoptera: Eulophidae), egg-larval endoparasitoids of weevils (Coleoptera: Curculionidae)

Gumovsky, Alex

doi:10.1017/s0007485307004798

Cited by 11 publications

(10 citation statements)

References 25 publications

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“…Parasites of Gymnetron are few (May 1993, Gumovsky 2007), and during this study, only one parasite was found in the larvae of Gymnetron . Low parasitism may due to the following two reasons.…”

Section: Discussionmentioning

confidence: 55%

The genus Gymnetron from China with description of pre-imaginal stages of G. miyoshii, G. auliense and G. vittipenne (Coleoptera,Curculionidae)

Jiang¹,

Zhang²

2015

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There are four species of Gymnetron in China recorded to date including Gymnetron miyoshii Miyoshi, 1922, Gymnetron villosipenne Roelofs, 1875, Gymnetron auliense Reitter, 1907 and Gymnetron vittipenne Marseul, 1876, of which the last two are new country records. The pre-imaginal stages including eggs, mature larvae and pupae of Gymnetron miyoshii, Gymnetron auliense and Gymnetron vittipenne are described and illustrated. In addition, their diagnostic characters (larvae and pupae) are discussed and differentiated, and notes on some of their biological parameters are provided. Potential ecological impacts between Gymnetron weevils and their host Veronica spp. also are provided.

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Section: Discussionmentioning

confidence: 55%

The genus Gymnetron from China with description of pre-imaginal stages of G. miyoshii, G. auliense and G. vittipenne (Coleoptera,Curculionidae)

Jiang¹,

Zhang²

2015

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“…7b, d). Shortly afterwards the ovipositor's needle appears within the egg yolk, the female carries out rhythmic, twisting movements of her gaster, similarly to other species of the genus (Gumovsky, 2007(Gumovsky, , 2008. Oviposition lasts 1-3 min or longer.…”

Section: The Parasitoid Entedon Erythrinaementioning

confidence: 99%

“…The other known gregarious parasitoids of Entedon (the cioni group) attack the larvae of their hosts, Cionus weevils (Curculionidae) (Gumovsky, 1997). The other known egg-larval species of genus are all solitary parasitoids (Gumovsky, 2007(Gumovsky, , 2008. Entedon erythrinae is proovigenic species.…”

Section: Parasitoid Developmentmentioning

confidence: 99%

“…Entedon erythrinae is proovigenic species. Its egg is &0.1 × the size of the egg of E. thomsonianus Erdös (& 450 μm long: Gumovsky, 2007), &0.2-0.3 × the size of the egg of E. sparetus Walker (& 250 μm long: Gumovsky, 2007), &0.2-0.3 × the size of the egg of E. sylvestris Szelényi (260-300 μm long: Gumovsky, 2006), &0.2 × the size of the eggs of E. costalis Dalman (& 300 μm long: Gumovsky, 2008) and of the species of the cioni-group (& 310 μm long: Gumovsky, unpublished data). The small size of the eggs of E. erythrinae is likely associated with the relatively small size of the eggs of the host beetle (if compared with the eggs of most weevils) and the number of the eggs laid by the parasitoid female.…”

Section: Parasitoid Developmentmentioning

confidence: 99%

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Biology, immature and adult morphology, and molecular characterization of a new species of the genusEntedon(Hymenoptera: Eulophidae) associated with the invasive pestSpecularius impressithorax(Coleoptera: Chrysomelidae, Bruchinae) onErythrinaplants

Gumovsky

Ramadan²

2011

Bull. Entomol. Res.

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Entedon erythrinae sp. n. (Hymenoptera: Eulophidae), a gregarious egg-larval endoparasitoid of the Erythrina bruchine Specularius impressithorax, an invasive pest of the coral tree seeds (Erythrina spp.), is described from the Hawaiian Islands and Africa (South Africa, Tanzania and Mozambique). The biology and morphology of preimaginal stages of this new species are described in details.It is remarkable that the early embryo of the parasitoid represents a mass of undifferentiated cells surrounded by a peculiar membrane formed by the peripheral enlarged polygonal cells. The young larva developing inside this membrane corresponds morphologically to the second instar of congeneric species. Various peculiarities of the parasitoid-host relationships in gregarious and solitary Entedon parasitoids are discussed. The DNA sequences of 28S D2 (nuclear), Cytochrome Oxidase I (COI, mitochondrial) and Cytochrome B (CytB, mitochondrial) genes are provided for this new species and compared with the sequences of some other Afrotropical and Palearctic species of the genus.

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“…The morphological characterizations of immature stages aiding in taxonomy (Gumovsky 2007). However, for this species does not well elucidated.…”

Section: Introductionmentioning

confidence: 97%

Morphological characterization of immature stages of Habrobracon hebetor (Hymenoptera, Braconidae) ectoparasitoid of Ephestia kuehniella (Lepidoptera, Pyralidae)

Pezzini¹,

Jahnke²,

Köhler³

2017

JHR

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Habrobracon hebetor (Say) is a cosmopolitan idiobiont braconid which parasitizes Pyralidae larvae, a pest of stored products, such as Ephestia kuehniella (Zeller). The objective was to describe the morphology of immature forms of H. hebetor and morphological changes throughout its development. Mated females of H. hebetor were individualized in Petri dishes containing larvae of E. kuehniella for parasitism for six hours. Then, the females were removed, leaving only the eggs placed on the host. The development was evaluated every 12 hours, recording all stages and changes until the emergence of adults. Using stereoscopic optical and scanning electron microscopy, photographs of immature individuals were taken. The results showed that this parasitoid completes its development between 10-12 days. There were stages overlaps during egg to adult development. Eggs are hymenopteriform, with a smooth surface. According to cephalic capsule and larval length measurements of H. hebetor, it was possible to determine four instars. In general, the instars are similar to each other, differing mainly in the size and shape of segments. Larvae present a gradual loss of transparency, becoming opaquer at each successive instar. Last instar larvae distanced from the host to form the cocoon and to pupate. This study was relevant for a better understanding of the physiological interactions between E. kuehniella and H. hebetor.

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A taxonomic revision, biology and morphology of immature stages of theEntedon sparetusspecies group (Hymenoptera: Eulophidae), egg-larval endoparasitoids of weevils (Coleoptera: Curculionidae)

Cited by 11 publications

References 25 publications

The genus Gymnetron from China with description of pre-imaginal stages of G. miyoshii, G. auliense and G. vittipenne (Coleoptera,Curculionidae)

The genus Gymnetron from China with description of pre-imaginal stages of G. miyoshii, G. auliense and G. vittipenne (Coleoptera,Curculionidae)

Biology, immature and adult morphology, and molecular characterization of a new species of the genusEntedon(Hymenoptera: Eulophidae) associated with the invasive pestSpecularius impressithorax(Coleoptera: Chrysomelidae, Bruchinae) onErythrinaplants

Morphological characterization of immature stages of Habrobracon hebetor (Hymenoptera, Braconidae) ectoparasitoid of Ephestia kuehniella (Lepidoptera, Pyralidae)

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