A GENETIC AND MORPHOLOGICAL STUDY OF CLARKIA STELLATA (ONAGRACEAE) AND RELATED SPECIES IN NORTHEASTERN CALIFORNIA

Crepidotus lutescens is described as new from Chang bai Mountain, Jilin Province, China. This species is distinctive due to its ochraceous salmon pileus, clamped hyphae, subglobose to broadly ellipsoid basidiospores with a granular to warty ornamentation, and lageniform cheilocystidia with capitate apices. Illustrations, photographs of basidiocarps, and microscopic features of this species are provided in this paper. Based on morphological study, this species is unique compared to existing Crepidotus species. Phylogenetic analyses based on ITS sequences with Maximum Likelihood (ML) and Bayesian Analysis (BA) also showed that C. lutescens was clearly independent from related species.

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First report of Navicula jakovljevicii Hustedt (Bacillariophyta) from Hungary: distribution, comparative morphology and a related species

Acta Botanica Croatica ◽

10.1515/botcro-2015-0027 ◽

2015 ◽

Vol 74 (2) ◽

pp. 253-264 ◽

Cited By ~ 1

Author(s):

Viktória B-Béres ◽

István Bácsi ◽

Enikő T-Krasznai ◽

Zsuzsanna Kókai ◽

Krisztina Buczkó

Keyword(s):

Related Species ◽

Catchment Area ◽

Morphological Study ◽

Comparative Morphology ◽

Morphological Features ◽

Elodea Nuttallii ◽

First Report ◽

Fossil Material ◽

River Danube ◽

Hungarian Population

Abstract In Hungary Navicula jakovljevicii was firstly recorded in biofilm of Elodea nuttallii in 2005 in an oxbow of the catchment area of the River Danube. Subsequently, in 2006, N. jakovljevicii was also found in the same oxbow on reed stems as well. In the following years it appeared in another oxbow, suggesting an expanding distribution in the tributaries of the Danube in Hungary. The Hungarian population can be characterised as having mixed morphological features in comparison with other known N. jakovljevicii populations of Europe. When the morphological study was expanded, a similar, but 'giant form' was detect ed in fossil material. We found similarities and a possible connection between N. jakovljevicii and Navicula lucida, a diatom taxon described from a Neogene deposit in the Carpathian Basin. Despite the morphological similarities in the shape, apices, striae pattern and raphe structure of these two species, there are significant differences in valve dimensions: the valves of N. lucida are larger and more heavily silicified than N. jakovljevicii.

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Observations on the morphology of Australorbis nigricans

Memórias do Instituto Oswaldo Cruz ◽

10.1590/s0074-02761955000100012 ◽

1955 ◽

Vol 53 (1) ◽

pp. 121-134 ◽

Cited By ~ 18

Author(s):

W. Lobato Paraense ◽

Newton Deslandes

Keyword(s):

Special Reference ◽

Related Species ◽

Morphological Study ◽

Vas Deferens ◽

Morphological Characteristics ◽

Ventral Surface ◽

Sperm Duct ◽

Caudal Portion ◽

Great Body ◽

The Right

A morphological study was done on A. nigricans, based on the observation of shell, radula, renal region and genitalia of 50 specimens measuring 18 mm in diameter. The data obtained are to be compared with those recorded in our previous paper (PARAENSE & DESLANDES, 1955) on A. glabratus. The characteristics common to both species will not be mentioned here. The numerals refere to the means and their standard deviations: no special reference being done, they correspond to length measurementes. Shell - 18 mm in diameter, 6.37 ± 0.29 mm in greatest width, 6 whorls. Prevailing colur ferruginous sepia, a minority of olivaceous, ochreous, nigrescent and deeply black specimens being found. Right side variously depressed, umbilicated, 1.5 to 3.5 mm deep from the bottom of the umblicus to the highest level of the last whorl. Left side more depressed than the right one, broadly concave, 1.5 to 3.5 mm deep. Both sides show a varously distinct keel, that looks sharper at the left. Aperture deltoid, varying in outline and width. Body, extended - 60.26 ± 3.62 mm, less pigmented than in glabratus. Renal tube - 30.68 ± 1.69 mm, showing neither ridge nor pigmented line along its ventral surface, this negative character affording a sure means of separation from glabratus. Ovotestis - 14.48 ± 1.93 mm. Ovisperm duct - 13.04 ± 1.60 mm, including the non-unwound seminal vesicle. The latter was 0.97 ± 0,21 mm in greatest width. Carrefour - Resembling that of glabratus. Sperm duct - 21.36 ± 1.53 mm. Prostate - Prostate duct 7.14 ± 0.74 mm, collecting a row of long diverticula numbering 19.6 ± 3.1 and more separate than in glabratus. Last diverticulum generally bifurcate or arborescent, the remaining ones arborescent. Vas deferens - 28.68 ± 1.38. Ratio vas deferens/vergic sac = 6.8±0.8. Verge - 3.08 ± 0.28 mm long, 0.11 ± 0.02 mm wide. Vergic sac - 3.07 ± 0.28 mm long, about 0.20 mm wide. Ratio vergic sac/preputium = 0.84 ± 0.12. Preputium - 3.69 ± 0.47 mm long, 0.85 ± 0.10 mm wide. Albumen gland - Resembling taht of glabratus. Oviduct - 16.26 ± 1.41 mm, swollen at the cephalic end. Uterus - 13.24 ± 1.19 mm. Vagina - 1.70 ± 0.22 mm, swolen at the caudal portion. Spermatheca - 2.78 ± 0.40 mm long, 0.86 ± 0.16 mm wide. Spermathecal duct 1.11 ± 0.20 mm. Radula - 125 to 168 horizontal rows of teeth (mean 153.9 ± 8.4). Radula formula 28-1-28 to 36-1-36 (mean 31.8 ± 1.9). Mode formula 31-1-31. The morphological characteristics of the renal region and shell, and the great body length in the same condition of shell diameter, distinguish A. nigricans from the most related species A. glabratus, giving support to considering it a good species from a txonomic or phenotypic standpoint (morphospecies).

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Description and Morphology of the Immature Stages of Three Closely Related Species of Contarinia Rond. (Diptera: Cecidomyiidae) from Galls on Douglas-fir Needles

The Canadian Entomologist ◽

10.4039/ent93833-10 ◽

1961 ◽

Vol 93 (10) ◽

pp. 833-851 ◽

Cited By ~ 5

Author(s):

S. F. Condrashoff

Keyword(s):

Related Species ◽

Morphological Study ◽

Douglas Fir ◽

Immature Stages ◽

Closely Related Species ◽

Larval Instars

A detailed morphological study of the immature stages of Contarinia pseudotsugae Condr., C. constricta Condr. and C. cuniculator Condr., along with their description, is presented in this paper. This work is based on examinations of several hundred larvae of each species, with numerous observations of larvae in the act of moulting and pupating which confirmed the morphological indications of three larval instars. Included also is a brief description of the galls associated with each midge species. Terminology used in the larval descriptions follows that of Möhn 1955.

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The Male Hindwing Costal Roll in Cochylina (Lepidoptera: Tortricidae): Morphological Variation, Phylogenetic Distribution, and Relationship to Host Utilization

Insect Systematics and Diversity ◽

10.1093/isd/ixab030 ◽

2022 ◽

Vol 6 (1) ◽

Author(s):

José V Pérez Santa-Rita ◽

John W Brown ◽

Joaquín Baixeras

Keyword(s):

Electron Microscopy ◽

Network Analysis ◽

Food Web ◽

Morphological Variation ◽

Related Species ◽

Morphological Study ◽

Phylogenetic Signal ◽

Phylogenetic Distribution ◽

Closely Related Species ◽

Male Scent

Abstract This is the first morphological study of the male hindwing costal roll (CR), a scent organ of tortricid moths of the subtribe Cochylina (Lepidoptera, Tortricidae). This composite organ varies from a simple membranous roll of the hindwing costa to a complex roll that incorporates a hairpencil and two types of microscales. All the components show taxon-dependent traits. Both optical and electron microscopy are used to elucidate the structure. The costal roll is associated primarily with the Aethes Billberg, Saphenista Walsingham, Phalonidia Le Marchand, and Cochylis Treitschke groups of genera. The general notions that wing male scent organs are phylogenetically labile and that they may have arisen among closely related species as a consequence of habitat sharing are explored using network analysis and phylogenetic signal. Taxa with a costal roll certainly support a more complex area of the food web, however, the character shows a strong phylogenetic signal and is not the result of a sporadic evolution.

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The metendosternite and penile flagellum: two unexplored character systems of pleasing fungus beetles (Coleoptera: Erotylidae)

Zoological Journal of the Linnean Society ◽

10.1093/zoolinnean/zlaa152 ◽

2020 ◽

Author(s):

Italo Salvatore De Castro Pecci-Maddalena ◽

Cristiano Lopes-Andrade ◽

Paul Skelley

Keyword(s):

Related Species ◽

Morphological Study ◽

Phylogenetic Signal ◽

Morphological Features ◽

The Other ◽

Generic Level ◽

Phylogenetic Studies ◽

Other Hand

Abstract Erotylidae (Cucujoidea) are currently divided into six subfamilies, which are regarded as monophyletic. However, there are doubts on the monophyly of lower ranked taxa within Erotylidae, including its most diverse tribe (Tritomini) and the highly diverse genus Mycotretus (Tritomini). The next steps in phylogenetic studies on these taxa rely on better sampling and on studies of unexplored character sets. Here, we conduct a comparative morphological study of the metendosternite and the penile flagellum within Erotylidae, with emphasis on Tritomini and Mycotretus, establishing a naming system for these structures. Representatives of 56 species belonging to all subfamilies of Erotylidae were analysed. A total of 17 genera and 45 species of Tritomini were selected, of which 21 species were Mycotretus. A total of 17 characters (eight of the metendosternite and nine of the penile flagellum) with potential phylogenetic value were recognized. Within Tritomini there is evidence of phylogenetic signal for the presence or absence of the metendosternal lamina at the generic level and above. On the other hand, the penile flagellum may be more informative for levels below the genus and morphological features of the flagellar ‘head’ seem to have phylogenetic signal for groups of potentially related species of Mycotretus.

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Techniques for preparing the Lolium perenne coleorhiza for scanning electron microscope evaluation

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100124239 ◽

1992 ◽

Vol 50 (1) ◽

pp. 766-767

Author(s):

Susan B.G. Debaene ◽

John S. Gardner ◽

Phil S. Allen

Keyword(s):

Electron Microscope ◽

Scanning Electron Microscope ◽

Lolium Perenne ◽

Morphological Study ◽

Root Hairs ◽

Inner Pressure ◽

Water Potentials ◽

Radicle Emergence ◽

Standard Fixation ◽

Scanning Electron

The coleorhiza is a nonvascular sheath that encloses the embryonic radicle in Poaceae, and is generally the first tissue to emerge during germination. Delicate hairlike extensions develop from some coleorhiza cells prior to radicle emergence. Similar to root hairs, coleorhiza hairs are extremely sensitive to desiccation and are damaged by exposure to negative water potentials. The coleorhiza of Lolium perenne is somewhat spherical when first visible, after which a knob forms at a right angle to the caryopsis due to inner pressure from the elongating radicle. This knob increases in length until the radicle finally punctures the coleorhiza. Standard fixation procedures cause severe desiccation of coleorhiza cells and hairs, making morphological study of the coleorhiza difficult. This study was conducted to determine a more successful process for coleorhiza preservation.

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