scholarly journals External morphology of the immature stages of Neotropical heliconians: X. Heliconius sara apseudes (Lepidoptera, Nymphalidae, Heliconiinae)

2015 ◽  
Vol 105 (4) ◽  
pp. 523-533
Author(s):  
Kim R. Barão ◽  
Denis S. Silva ◽  
Gilson R. P. Moreira
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Instar Larva ◽  
External Morphology ◽  
Immature Stages ◽  
First Instar ◽  
Scanning Electron

ABSTRACT The biology and morphology of the immature stages of Heliconius sara apseudes (Hübner, [1813]) are still little known. External features of the egg, larvae and pupa of H. sara apseudes are described and illustrated, based upon light and scanning electron microscopy. Eggs with smooth carina, first instar larva with scaly setae, and body of second to fifth instars covered with scattered pinnacles distinguish H. sara apseudes from other heliconiine species.

External morphology of immature of Tynacantha marginata Dallas, 1851 (Hemiptera, Heteroptera, Pentatomidae)

Zootaxa ◽  
2018 ◽  
Vol 4378 (1) ◽  
pp. 121 ◽  
Author(s):  
RICARDO BRUGNERA ◽  
JOCÉLIA GRAZIA
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Early Identification ◽  
Smooth Surface ◽  
External Morphology ◽  
Immature Stages ◽  
First Instar ◽  
Lateral Margins ◽  
Heteroptera Pentatomidae ◽  
Scanning Electron

Immature stages of Neotropical Asopinae have been poorly studied. Here, the external morphology of eggs and nymphs of Tynacantha marginata Dallas are described using light and scanning electron microscopy. The egg is barrel-shaped with smooth surface, and long aero-micropylar processes. In the first instar, the color of abdomen varies along the development from yellow to red, the dorsal plates are pale, and the surface of evaporatorium bears spiked projections. From the second, the evaporatorium surface is reticulated. From third instar, the pronotum is orange with black lateral margins. The eggs and nymphs of T. marginata are unique among Neotropical Asopinae species of which the morphology is known, allowing the early identification of the species. 

Description of immatures of Galeacius martini Schouteden (Hemiptera: Heteroptera: Scutelleridae)

Zootaxa ◽  
2011 ◽  
Vol 3110 (1) ◽  
pp. 37 ◽  
Author(s):  
FILIPE M. BIANCHI ◽  
THEREZA A. GARBELOTTO ◽  
LUIZ A. CAMPOS
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
External Morphology ◽  
Immature Stages ◽  
Efferent System ◽  
Scanning Electron

Scutelleridae occur worldwide, and immature stages have been scarcely studied. Galeacius Distant is a Neotropical genus currently containing four species. Here the external morphology of immatures of Galeacius martini Schouteden is described. Adults and nymphs were maintained in laboratory and fed on branches of Miconia sellowiana with fruits. The egg of G. martini is semi-spherical, reddish brown, with reticulations surrounding smaller granulated sculpturing under scanning electron microscopy (S.E.M). The nymphs from first to fifth instar have a stridulitrum plus plectrum, and 2+2 trichobothria posterior to spiracles on abdominal sternites III–VII. The dorso-abdominal scent efferent system has an evaporatorium with two distinct mycoid sculpturing, and their are two types of peritreme on medial plates II and III in first and fifth instar. The color and chorion morphology may distinguish G. martini from other scutellerid eggs so far described. New descriptions of immatures of Scutelleridae are particularly desirable, mainly with emphasis some structures on S.E.M., as stridulatory devices, dorso-abdominal scent efferent system, and trichobothria, thus improving the knowledge about the taxon.

Systematic position of Bombyx incomposita (Lepidoptera: Bombycidae), with notes on its immature biology and hostplant association

Zootaxa ◽  
2021 ◽  
Vol 5052 (1) ◽  
pp. 91-104
Author(s):  
RUNG-JUEN LIN ◽  
YU-CHI LIN ◽  
YU-FENG HSU
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Phylogenetic Reconstruction ◽  
Systematic Position ◽  
Immature Stages ◽  
Male And Female ◽  
First Instar ◽  
Current Classification ◽  
Six Genes ◽  
Scanning Electron

The immature stages, morphology, and systematic position of Bombyx incomposita (van Eecke, 1929) are reported. The morphology of larva was investigated using scanning electron microscopy, and the phylogeny was inferred using six genes (COI, CAD, EF-1α, GAPDH, RpS5, and wgl). The molecular phylogeny strongly supported that B. incomposita is sister to B. huttoni Westwood, 1847. The divergence of the COI barcode, phylogenetic reconstruction, and difference in immature stages support the current classification, in which the species incomposita belongs to the genus Bombyx. We give illustrations of male and female genitalia and briefly discuss the utility of the chaetotaxy of the first instar larvae on taxonomy of silkmoths. The SV group bears six setae in B. mandarina, but eight in B. incomposita. The L1 bears three setae in Rotunda, but just single seta in Bombyx.  

scholarly journals Revision of the genus Trichomeloe Reitter, with the description of new species and first instar larvae (Coleoptera: Meloidae)

2008 ◽  
Vol 77 (4) ◽  
pp. 227-248 ◽  
Author(s):  
Marco A. Bologna ◽  
Andrea Di Giulio
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Near East ◽  
Instar Larva ◽  
First Instar ◽  
Annotated Catalogue ◽  
Scanning Electron

The Palaearctic genus Trichomeloe is reviewed and newly defined on the basis of larval and adult characters. Its position among the Lyttini tribe is discussed. Trichomeloe includes eight species, mostly from the Near East. The bionomics of the genus is summarized, together with a key to the species, an annotated catalogue and some taxonomic remarks. T. syriacus n. sp. from Syria and T. mesopotamicus n. sp. from northern Irak, are described. The first instar larva of T. syriacus is described and compared with that of T. chrysocomus, both figured by scanning electron microscopy photographs.

Morphology and chaetotaxy of the first instar larva of the scorpionfly Sinopanorpa tincta (Mecoptera: Panorpidae)

Zootaxa ◽  
2011 ◽  
Vol 2897 (1) ◽  
pp. 18 ◽  
Author(s):  
HONG-MIN CHEN ◽  
BAO-ZHEN HUA
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Light Microscopy ◽  
Instar Larva ◽  
First Instar ◽  
First Time ◽  
Scanning Electron

The morphology and chaetotaxy of the first instar larva of the scorpionfly Sinopanorpa tincta (Navás, 1931) are described and illustrated for the first time with the aid of light microscopy and scanning electron microscopy, with particular attention to the mouthparts and their sensilla. A comparison is made with the larvae of other known Mecoptera, especially Panorpa and Neopanorpa in Panorpidae.

scholarly journals Scanning electron microscopy of the egg and the first instar larva of Dermatobia hominis (Diptera, cuterebridae)

1988 ◽  
Vol 83 (2) ◽  
pp. 253-257 ◽  
Author(s):  
Antonio Cesar Rios Leite
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Instar Larva ◽  
Dermatobia Hominis ◽  
First Instar ◽  
Scanning Electron

The egg and the first instar larva of Dermatobia hominis were described based on observation with a scanning electron microscope.

External morphology of the egg and the first and fifth instars of Cyrtocoris egeris Packauskas & Schaefer (Hemiptera: Heteroptera: Pentatomidae: Cyrto-corinae)

Zootaxa ◽  
2011 ◽  
Vol 2991 (1) ◽  
pp. 29 ◽  
Author(s):  
FILIPE MICHELS BIANCHI ◽  
VIVIANA CAUDURO MATESCO ◽  
LUIZ ALEXANDRE CAMPOS ◽  
JOCELIA GRAZIA
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Rio Grande ◽  
External Morphology ◽  
Rio Grande Do Sul ◽  
Nymphal Stage ◽  
Efferent System ◽  
First Instar ◽  
Heteroptera Pentatomidae ◽  
Scanning Electron

Cyrtocorinae is an uncommon, small, and exclusively Neotropical group in Pentatomidae, whose immatures are poorly understood. In this paper, the egg and first and fifth instars of Cyrtocoris egeris Packauskas & Schaefer are studied with the scanning electron microscopy (SEM). Specimens were collected in Maquiné, Rio Grande do Sul, Brazil. Immatures were analyzed with light stereomicroscope and SEM. The egg’s chorion surface is predominantly smooth alternated with granulated areas, and an average of 54 clubbed aero-micropylar processes are arranged in three irregular rows. In the first and fifth instars, organization of the external dorso-abdominal scent efferent system suggests an analogy to the metathoracic external scent efferent system of the adult, because of structures similar to the evaporatorium, evaporatory channel, and auricle peritreme; the last structure is absent in the first instar. Abdominal sterna III–VII have 1+1 (first instar) and 2+2 trichobothria (fifth instar). Ultrastructural observations allowed recognition of unique characters at the egg stage and conserved features at the nymphal stage in C. egeris.

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