scholarly journals Morphological characters of adult and immature stages of Cheyletus malaccensis Oudemans, 1903

1975 ◽  
Vol 26 (2-3) ◽  
pp. 151-165
Author(s):  
Eikichi NAKADA
Keyword(s):  
Morphological Characters ◽  
Immature Stages ◽  
Cheyletus Malaccensis

Immature stages of Calycopis bellera (Hewitson) and C. janeirica (Felder) (Lepidoptera, Lycaenidae, Theclinae, Eumaeini): Taxonomic significance and new evidence for detritivory

Zootaxa ◽  
2009 ◽  
Vol 2325 (1) ◽  
pp. 39-61 ◽  
Author(s):  
MARCELO DUARTE ◽  
ROBERT K. ROBBINS
Keyword(s):  
Morphological Characters ◽  
Sexually Dimorphic ◽  
Immature Stages ◽  
Taxonomic Significance ◽  
Larval Instars ◽  
Species Groups ◽  
Males And Females ◽  
First Time ◽  
New Evidence

Details of egg, larval, and pupal morphology are described and illustrated for Calycopis bellera (Hewitson) and C. janeirica (Felder), with a special emphasis on larval chaetotaxy. Wild-caught Calycopis females laid eggs on dead leaves in the laboratory, and the caterpillars successfully completed development on an artificial agar diet to which no leaves were added. Males and females of the sexually dimorphic C. bellera had been previously placed in different genera or different species groups. Calycopis janeirica had been chronically misidentified (and misspelled C. jeneirica). Males and females of this species appear to be correctly associated for the first time. Whereas C. bellera has five larval instars—as reported previously for C. caulonia—C. janeirica has four. Morphological characters of the immatures of C. bellera and C. janeirica are summarized in a table and compared with those of other reared Calycopis species.

Bryobia arborea n. sp. and Morphological Characters Distinguishing It from B. praetiosa Koch (Acarina: Tetranychidae)

1957 ◽  
Vol 89 (11) ◽  
pp. 485-490 ◽  
Author(s):  
C. V. G. Morgan ◽  
N. H. Anderson
Keyword(s):  
New Species ◽  
Body Size ◽  
Morphological Characters ◽  
Valid Species ◽  
Species Number ◽  
Modern Trend ◽  
Immature Stages ◽  
Type Specimens ◽  
Size And Shape

The clover, or brown, mite, Bryobia praetiosa Koch, was described in 1836 from specimens collected an shrubbery in Germany. The systematics of the species is complex and confusing. By 1838, Koch had described four species in the genus Bryobia but he preserved no type specimens and his descriptions do not agree with his illustrations (7, 12). Subsequent workers either placed Koch's species in synonomy nor described new species. Two species, speciosa Koch and ribis Thomas, have created the most controversv. B. speciosa was accepted as valid by Koch, Berlese, Canestrini and Fanzago, ind Oudemans, but rejected by von Hanstein and Trägårdh (2, 12). The gooseberry mite, B. ribis, was recognized as a valid species by Thomas and von Hanstein but Oudemans and Trägårdh placed it in synonomy with B. praetiosa (12). Further confusion was caused by the descriptions of additional new species of Bryobia and by descriptions of immature stages of B. praetiosa (8). The following taxonomic characters used by early acarologists in describing species of Bryobia have since been considered too variable for distinguishing species: number of femoral and tarsal hairs on the foreleg, body size, concavity of dorsum, and size and shape of cephalothoracic plate (7, 8, 12). Consequently, taxonomists have been at a loss to interpret Koch's original descriptions and subsequent redescriptions became inevitable. Because of the lack of morphological distinctions the modern trend has been to group all previously proposed species into one valid species (7, 8). As a result, 20 synonyms are now recognized for B. praetiosa (8).

scholarly journals Detailed description and illustration of larva, pupa and imago of Holorusia mikado (Westwood, 1876) (Diptera: Tipulidae) from Japan

2021 ◽  
Vol 9 ◽  
Author(s):  
Levente-Péter Kolcsár ◽  
Takeyuki Nakamura ◽  
Daichi Kato ◽  
Kozo Watanabe
Keyword(s):  
Leaf Litter ◽  
North American ◽  
Morphological Characters ◽  
Wide Distribution ◽  
Female Genitalia ◽  
Immature Stages ◽  
Aquatic Habitats ◽  
Male And Female ◽  
The North ◽  
First Time

Holorusia Loew, 1863 (Diptera: Tipulidae) is a relatively large crane fly genus with a wide distribution in the Afrotropic, Australasian–Oceanian, Eastern Palearctic, Oriental and Nearctic Regions. Although the genus is well known to include the largest crane fly species, the immature stages are, thus far, only described for the larva and pupa of the North American Holorusia hesperea Arnaud & Byers, 1990. In this study, we describe for the first time the egg, larva and pupae of the Japanese Holorusia mikado (Westwood, 1876). Larvae were collected from semi-aquatic habitats, from slow flowing areas of streams and small waterfalls where leaf litter accumulates; the larvae are detritivores and feed on wet, decomposing leaves. The larvae were reared to adults in the laboratory. Morphological characters of immature stages discussed with comparison with the North American H. hespera. Male and female genitalia are illustrated and described in detail for the first time.

Distribution patterns and taxonomy of some legume-feeding psyllids (Hemiptera: Psylloidea) and their hosts from the Iberian Peninsula, Morocco and Macaronesia

2002 ◽  
Vol 33 (3) ◽  
pp. 291-310 ◽  
Author(s):  
Diana M. Percy
Keyword(s):  
New Species ◽  
Iberian Peninsula ◽  
Host Plant ◽  
Host Plants ◽  
Narrow Range ◽  
Distribution Patterns ◽  
Morphological Characters ◽  
Immature Stages ◽  
Macaronesian Islands ◽  
Incomplete Sampling

AbstractDistribution patterns between continental and continental-island sister taxa are compared for some legume-feeding psyllids (Arytaininae, Psylloidea) and their host plants (Genisteae, Leguminosae). The host plant genera Adenocarpus, Chamaecytisus, Retama and Teline are characterized by distribution disjunctions, which sometimes match the disjunctions in the associated psyllids. Sister taxa pairs of Retama- and Teline-feeding psyllids from the continent and Macaronesian islands exhibit a similar geographic disjunction as their host plants, but this pattern is not found in Adenocarpus- or Chamaecytisus-feeding psyllids and their hosts. In addition, three closely related continental psyllids reflect the distribution of their Adenocarpus hosts in the montane regions of Morocco and Andalusia, but are not related to other Adenocarpus-feeding species. These examples suggest that among the Genisteae-feeding psyllids, shared distribution patterns with their hosts are localized rather than characteristic of the group as a whole. Six new species of psyllid, which feed on legume shrubs in the Genisteae, and are endemic to the Iberian Peninsula and Morocco, are described and illustrated. These species are in two taxonomically complex arytainine genera, Arytainilla and Livilla. Immature stages provide additional morphological characters useful for resolving taxonomic relationships within the Arytaininae, and the 5th instar nymphs of several species are described and illustrated. Genistoid-feeding psyllids are not known from all genera in the Genisteae but this may be due to incomplete sampling of rarer genistoid legumes. The majority of psyllids newly described here are narrow range endemics in either Andalusia or Morocco; one species occurs in both Andalusia and Morocco, and one species is more widespread in the Iberian Peninsula.

Descriptions and Illustrations of the First Instar Nymphs of the Cardiococcinae (Hemiptera: Coccidae)

2003 ◽  
Vol 38 (4) ◽  
pp. 494-501
Author(s):  
Gregory S. Hodges ◽  
Michael L. Williams
Keyword(s):  
Adult Female ◽  
Current Knowledge ◽  
Morphological Characters ◽  
Immature Stages ◽  
The Past ◽  
Taxonomic Information ◽  
First Instar

Taxonomic information on the Cardiococcinae is limited to morphological characters of the adult female. Morphological information on the immature stages has not been accomplished in the past. This work adds to the current knowledge of coccid immatures by providing descriptions and illustrations for the first-instar nymphs of Ceroplastodes dugesii (Signoret), Inglisia patella Maskell and Pseudokermes nitens Cockerell. Examination of the first instars indicated that morphological similarities exist between C. dugesii and P. nitens. However, I. patella differed morphologically from both of those species by lacking a rugose or papillated derm and by having greater than 34 marginal setae.

Taxonomy of Simulium guaporense Py-Daniel (Diptera: Simuliidae) from Brazil, with the first description of males and females

Zootaxa ◽  
2006 ◽  
Vol 1104 (1) ◽  
pp. 23
Author(s):  
NEUSA HAMADA ◽  
LUIS M. HERNANDEZ ◽  
SERGIO LUIZ BESSA LUZ
Keyword(s):  
Morphological Characters ◽  
Species Group ◽  
Type Locality ◽  
Immature Stages ◽  
Mato Grosso ◽  
Males And Females ◽  
First Time

We describe Simulium guaporense Py-Daniel adults and redescribe some morphological characters of its larvae and pupae based on specimens collected near the type locality in Rondônia State, Brazil. We report this species for the first time in Mato Grosso State. This species was placed originally in the S. siolii species group of the subgenus Psaroniocompsa; however, the thoracic pattern of the adults of S. guaporense is similar to that of species in the S. auristriatum species group. The immature stages were found on deciduous leaves and trailing vegetation in sandy-bottomed streams. Females were collected biting humans.

scholarly journals Shape of attachment structures in parasitic isopodan crustaceans: the influence of attachment site and ontogeny

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9181 ◽  
Author(s):  
Serita van der Wal ◽  
Joachim T. Haug
Keyword(s):  
Attachment Site ◽  
Morphological Characters ◽  
The Body ◽  
Immature Stages ◽  
Life Stages ◽  
Comprehensive Description ◽  
Additional Species ◽  
Critical Comparison ◽  
Statistical Representation ◽  
Attachment Structures

Many fields of modern systematic biology are adult-centred. This is unfortunately also the case for Cymothoidae, an ingroup of parasitic forms of Isopoda, with fishes as hosts. Different ingroups of Cymothoidae have specialised appendages that enable their fish associated lifestyles, attaching to different sites on the body of the host. The extent to which these structures vary among species and in relation different sites of attachment, and between different ontogenetic stages, is explored here. This study presents the detailed descriptions, illustrations, comparisons, and analysis of a variety of attachment structures of 13 adult and immature specimens representing three major groups Ceratothoa, Elthusa and Anilocra, along with full focus, detailed photographs of all the examined life stages. The three groups exhibit different strategies attaching to mouth, gill and externally, respectively. A statistical representation of the morphology of the dactyli, used for attaching to the host, was performed. This included a critical comparison of 10 additional species documented in literature. This is the first comprehensive description and photographs of specialised appendage morphology of immatures of Ceratothoa, as well as the first detailed micrographs of embryonic stages of Cymothoidae, and the first lateral and ventral views of immature stages of the examined species. Immature specimens possess morphological characters that can be used to distinguish between different species, but cannot be accurately identified based on diagnostic characters of adults. Quantitative analysis indicates that ontogeny plays a major role in the shape of the attachment structures (e.g. dactyli).

Michaelshaffera gen. n. - a pyraloid taxon lacking an abdominal tympanal organ (Lepidoptera: Pyralidae)

1997 ◽  
Vol 28 (4) ◽  
pp. 391-402 ◽  
Author(s):  
M. Alma Solis
Keyword(s):  
New Species ◽  
South America ◽  
Type Species ◽  
French Guiana ◽  
Morphological Characters ◽  
New Combination ◽  
Immature Stages ◽  
Tympanal Organ ◽  
Lepidoptera Pyralidae ◽  
A New Species

AbstractMichaelshaffera gen. n. is comprised of two species, M. maidoa (Schaus), new combination, the type species, described from French Guiana, and a new species, M. beckeri, here described from South America. The assignment of taxa to the Pyraloidea is based primarily on characters of the tympanal organs and immature stages. Michaelshaffera lacks a tympanal organ and the immatures are unknown. The rationale for the placement of this genus in the Pyraloidea and lower hierarchical ranks is discussed based on other morphological characters.

Immature stages of two species of Evandromyia (Aldamyia) and the systematic importance of larval mouthparts within Psychodidae (Diptera, Phlebotominae, Psychodinae)

Zootaxa ◽  
2008 ◽  
Vol 1740 (1) ◽  
pp. 1 ◽  
Author(s):  
FELIPE ARLEY COSTA PESSOA ◽  
MARLISSON AUGUSTO COSTA FEITOSA ◽  
ELOY GUILLERMO CASTELLÓN-BERMÚDEZ ◽  
CLAUDIA MARÍA RÍOS-VELÁSQUEZ ◽  
RICHARD DOUGLAS WARD
Keyword(s):  
Electron Microscopy ◽  
Morphological Characters ◽  
Fourth Instar ◽  
Sand Fly ◽  
Similar Species ◽  
Sand Flies ◽  
Immature Stages ◽  
Phlebotomine Sand Flies ◽  
Systematic Importance ◽  
Scanning Electron

Phlebotomine sand flies (Diptera: Psychodidae) are vectors of Leishmania, Bartonella and several arboviruses. Sand fly taxonomy has been mainly based on adult morphological characters and few larval characters have been used. In this work the egg and all larval instars of Evandromyia carmelinoi (= Lutzomyia carmelinoi migonei group of authors) are described, as well as the fourth instar of E. lenti, two morphologically similar species. Scanning electron microscopy (SEM) and light microscopy were used to describe the species. The sand flies E. carmelinoi and E. lenti can be differentiated most readily by the antennae and the shoulder accessory b setae on the thoracic segments. Some information on the mouthpart morphology of Phlebotominae and Psychodinae that could be useful for future phylogenetic and systematic studies is also provided.

Mitochondrial DNA allows the association of life stages to facilitate species recognition and delimitation in Australian stoneflies (Plecoptera : Gripopterygidae : Newmanoperla)

2015 ◽  
Vol 29 (3) ◽  
pp. 223 ◽  
Author(s):  
Julia H. Mynott
Keyword(s):  
Aquatic Ecosystems ◽  
Species Recognition ◽  
Mitochondrial Gene ◽  
Morphological Characters ◽  
Immature Stages ◽  
Life Stages ◽  
Larval Morphology ◽  
Larval Life ◽  
Intraspecific Divergence ◽  
Dichotomous Key

The larvae of stoneflies (Plecoptera) are important indicators for monitoring aquatic ecosystems, but the immature stages of some relevant species have not been described. Here, mitochondrial gene sequences are used to associate the adult and larval life stages for species of Newmanoperla McLellan. This study finds molecular and morphological support for five species, which include the four previously described species (N. exigua, N. hackeri, N. prona and N. thoreyi) and a newly recognised species, N. theischingeri, sp. nov., which is described herein. Molecular divergences between species for the COI fragment had minimum values of 15–18% while the maximum intraspecific divergence was 6–9%, and there was no overlap between species. Morphological characters for distinguishing the larvae of the five species were observed on the femora and included variations in the type of setation present and the area of occurrence. The combination of molecular and morphological methods enabled the larval morphology to be reassessed and has led to the following outcomes: the first formal generic larval description, a newly recognised species, updated descriptions for larvae of all species of Newmanoperla and a dichotomous key to larvae.

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