A TAXONOMIC REVISION OF THE GENUS CORDYLOSPASTA (COLEOPTERA: MELOIDAE) WITH AN ANALYSIS OF GEOGRAPHIC VARIATION IN C. OPACA

1972 ◽  
Vol 104 (8) ◽  
pp. 1161-1180 ◽  
Author(s):  
John D. Pinto
Keyword(s):  
Geographic Variation ◽  
North American ◽  
Southern California ◽  
Taxonomic Revision ◽  
Current Concept ◽  
Anatomical Characteristics ◽  
Infraspecific Taxa ◽  
Anatomical Characters ◽  
Informal Approach

AbstractDistributional and anatomical characteristics of the species of the western North American genus Cordylospasta are analyzed. The current concept of this genus is a considerable modification from that of earlier classifications.Of the two species belonging to Cordylospasta, C. fulleri Horn is unique among North American blister beetles in having antennae with 8 to 10 antennal segments. This species is strictly allopatric to the second species, C. opaca (Horn), in which the antennae are 11-segmented.Step-clinal geographic variation in seven anatomical characters is recorded for C. opaca. On this basis six biological races are recognized as occurring in central and southern California. These are considered the equivalent of subspecies. An informal approach to the recognition of these infraspecific taxa is followed since, due to limited material, interracial reproductive relationships cannot be inferred confidently at the present time.

A Taxonomic Revision of the Genus Megetra (Coleoptera: Meloidae) with Ecological and Behavioral Notes

1965 ◽  
Vol 97 (6) ◽  
pp. 561-580 ◽  
Author(s):  
Richard B. Selander
Keyword(s):  
New Species ◽  
New Mexico ◽  
Intraspecific Variation ◽  
North American ◽  
Taxonomic Revision ◽  
Seasonal Distribution ◽  
The State ◽  
Northern Arizona ◽  
The North ◽  
And Behavior

Abstract>Three species are recognized in the North American genus Megetra LeConte. The most distinctive of these anatomically and ecologically is M. cancellata (Brandt and Erichson), which ranges discontinuously from Arizona and New Mexico to the state of Hidalgo in México and occurs in limited sympatry with both of its congeners. Megetra vittata (LeConte) ranges from northern Arizona to western Texas. It appears to be strictly allopatric with, and similar ecologically to, M. punctata, new species, which ranges from southern Arizona and New Mexico to Durango, México. Specific diagnoses are made on the basis of characters of adult and, for M. cancellata and M. punctata, larval anatomy. Intraspecific variation in several adult characters is analyzed. Notes on the seasonal distribution, habitat, and behavior of the adult beetles are included.

scholarly journals Generic revision of the Holocystitidae of North America (Diploporita, Echinodermata) based on universal elemental homology

2017 ◽  
Vol 91 (4) ◽  
pp. 755-766 ◽  
Author(s):  
Sarah L. Sheffield ◽  
Colin D. Sumrall
Keyword(s):  
North America ◽  
North American ◽  
Taxonomic Revision ◽  
Junior Synonym ◽  
Oral Plate ◽  
Fundamental Misunderstanding ◽  
Oral Area

AbstractThe Holocystites Fauna is an enigmatic group of North American diploporitans that presents a rare window into unusual middle Silurian echinoderm communities. Multiple systematic revisions have subdivided holocystitids on the basis of presumed differences in oral area plating and respiratory structures. However, these differences were based on a fundamental misunderstanding of the homologous elements of the oral area and the taphonomic process; taphonomic disarticulation of the oral area formed the basis for the erection of Pentacystis and Osgoodicystis as separate genera, and Osgoodicystis is interpreted as the junior synonym of Pentacystis. Holocystitids show a conservative peristomial bordering plate pattern that is shared among all described genera. The peristome is bordered by seven interradially positioned oral plates as is typical for oral plate–bearing blastozoans. A second open circlet of facetal plates lies distal to the oral plates; five of these facetal plates bear facets for feeding appendages (lost on the A ambulacrum in some taxa), while two lateral facets (present in all taxa except Pustulocystis) do not. Holocystitid taxa show minor modifications to this basic peristomial bordering plate pattern. As thecal morphologies are highly variable within populations, taxonomic revision of holocystitids is based on modifications of the plating of the oral area.

scholarly journals Taxonomic revision of Russula subsection Amoeninae from South Korea

MycoKeys ◽  
2020 ◽  
Vol 75 ◽  
pp. 1-29
Author(s):  
Komsit Wisitrassameewong ◽  
Myung Soo Park ◽  
Hyun Lee ◽  
Aniket Ghosh ◽  
Kanad Das ◽  
...  
Keyword(s):  
New Species ◽  
South Korea ◽  
Central America ◽  
North American ◽  
Internal Transcribed Spacer ◽  
Phylogenetic Analyses ◽  
Taxonomic Revision ◽  
Molecular Phylogenetic ◽  
Pileus Surface ◽  
A New Species

Russula subsection Amoeninae is morphologically defined by a dry velvety pileus surface, a complete absence of cystidia with heteromorphous contents in all tissues, and spores without amyloid suprahilar spot. Thirty-four species within subsection Amoeninae have been published worldwide. Although most Russula species in South Korea have been assigned European or North American names, recent molecular studies have shown that Russula species from different continents are not conspecific. Therefore, the present study aims to: 1) define which species of Russula subsection Amoeninae occur on each continent using molecular phylogenetic analyses; 2) revise the taxonomy of Korean Amoeninae. The phylogenetic analyses using the internal transcribed spacer (ITS) and multilocus sequences showed that subsection Amoeninae is monophyletic within subgenus Heterophyllidiae section Heterophyllae. A total of 21 Russula subsection Amoeninae species were confirmed from Asia, Australia, Europe, North America, and Central America, and species from different continents formed separate clades. Three species were recognized from South Korea and were clearly separated from the European and North American species. These species are R. bella, also reported from Japan, a new species described herein, Russula orientipurpurea, and a new species undescribed due to insufficient material.

Geographic variation of the Anderson’s Niviventer (Niviventer andersoni) (Thomas, 1911) (Rodentia: Muridae) of two new subspecies in China verified with cranial morphometric variables and pelage characteristics

Zootaxa ◽  
2009 ◽  
Vol 2196 (1) ◽  
pp. 48-58 ◽  
Author(s):  
SONG LI ◽  
JUNXING YANG
Keyword(s):  
Geographic Variation ◽  
Yunnan Province ◽  
Principal Component ◽  
Taxonomic Revision ◽  
Western Yunnan ◽  
Principal Component Analyses ◽  
Discriminant Analyses ◽  
Southern Shaanxi ◽  
First Time ◽  
Northwestern Yunnan

A total of 66 specimens of Niviventer andersoni with intact skulls was investigated on pelage characteristics and cranial morphometric variables. The data were subjected to principal component analyses as well as to discriminant analyses, and measurement overlap was studied as compared with the coefficient of difference. The results indicate that three subspecies of N. andersoni can be recognized in China, including N. a. andersoni broadly distributed from northwestern Yunnan, Sichuan, northward to southern Shaanxi, and eastward to Hubei, N. a. pianmaensis subsp. nov. in western Yunnan, and N. a. ailaoshanensis subsp. nov. in Mt. Ailaoshan, central Yunnan province. Our study for the first time validates its subspecies differentiation that is most likely related to intra-specific geographic variation. In addition, a taxonomic revision of Niviventer andersoni in China is described.

Taxonomic significance of leaf and stem anatomy of Agalinis (Scrophulariaceae) from the U.S.A. and Canada

1991 ◽  
Vol 69 (9) ◽  
pp. 1935-1950 ◽  
Author(s):  
Judith M. Canne-Hilliker ◽  
Christine M. Kampny
Keyword(s):  
Key Words ◽  
North American ◽  
Fiber Bundles ◽  
Perennial Species ◽  
Taxonomic Significance ◽  
Stem Anatomy ◽  
Vascular Tissues ◽  
Anatomical Characters

Features of foliar and stem anatomy of 26 annual and 1 perennial species of North American Agalinis were examined from over 200 population samples. Several species including A. aphylla, A. densiflora, A. filicaulis, A. heterophylla, A. linifolia, A. maritima, and A. oligophylla have distinctive anatomy. Evidence from anatomy supports a reclassification of North American Agalinis at the sectional and subsectional ranks. Agalinis aphylla and A. oligophylla are allied with species of section Erectae, not section Purpureae subsection Setaceae. Agalinis edwardsiana (from section Tenuifoliae) and A. aspera (section Asperae) are most similar to members of section Purpureae subsection Pedunculares. Agalinis tenuifolia (section Tenuifoliae) is similar to species of section Purpureae subsection Purpureae. Anatomical characters range from those usually regarded as xeromorphic to those typical of hydromorphic species. However, different xeromorphic characters are present in species of sections Purpureae, Erectae, and Tenuifoliae. Species of section Purpureae subsection Setaceae have filiform, adaxially grooved leaves; species of section Erectae have narrow, short sclerenchyma-reinforced leaves and very slender stems usually having fiber bundles in their ridges. Species that we retain in section Tenuifoliae have a cylinder of sclerenchyma between the vascular tissues and the fiber-laden cortex. Key words: Agalinis, Scrophulariaceae, anatomy, systematics, taxonomy.

Taxonomic revision of Sabicea subgenus Anisophyllae (Ixoroideae, Rubiaceae) from Tropical Africa, with four new species

Phytotaxa ◽  
2017 ◽  
Vol 293 (1) ◽  
pp. 1 ◽  
Author(s):  
LISE A. ZEMAGHO ◽  
SIGRID LIEDE-SCHUMANN ◽  
OLIVIER LACHENAUD ◽  
STEVEN DESSEIN ◽  
BONAVENTURE SONKE
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Taxonomic Revision ◽  
Herbarium Specimens ◽  
Field Observations ◽  
Tropical Africa ◽  
Center Of Diversity ◽  
Infraspecific Taxa ◽  
Group A ◽  
Species Descriptions

A taxonomic revision of Sabicea subgenus Anisophyllae (Rubiaceae), a group restricted to Central and East Africa, is presented here. This work, based on a study of herbarium specimens and field observations in Cameroon and Gabon, includes a survey of the morphological features of the group, a key to the species, descriptions of all the taxa, and IUCN conservation status assessments. Fifteen species are recognised, four of which are described as new (Sabicea mapiana, S. ndjoleensis, S. parmentierae, S. sciaphilantha), three former varieties are raised to species rank (S. crystallina, S. jacfelicis, S. tersifolia), and one species previously sunk into synonymy is restored (S. bequaertii). Two new infraspecific taxa are also described, Sabicea crystallina subsp. engongensis and S. sciaphilantha subsp. hirsuta. The group has its center of diversity in Gabon, where 10 of the 15 species occur, three of them being endemic to the country.

Sign in / Sign up

Export Citation Format

Share Document