Distribution and ecology of dictyostelids in Madagascar

Phytotaxa ◽  
2021 ◽  
Vol 505 (2) ◽  
pp. 176-186
Author(s):  
JAMES C. CAVENDER ◽  
JOHN C. LANDOLT ◽  
EDUARDO M. VADELL ◽  
ALLISON L. PERRIGO ◽  
STEVEN L. STEPHENSON ◽  
...  
Keyword(s):  
Species Richness ◽  
New Species ◽  
Vegetation Types ◽  
Slime Molds ◽  
Soil Humus ◽  
South Central ◽  
The World ◽  
Cellular Slime ◽  
Distribution And Ecology ◽  
Southeastern Madagascar

Samples for isolation of dictyostelid cellular slime molds were obtained from 20 collecting sites at 18 localities in south central and southeastern Madagascar during May 2009. At least thirty species of dictyostelids representing seven genera were recovered from 52 samples of soil/humus. This total included 17 species described as new to science, 13 species already known from various localities throughout the world, and four isolates that remain unidentified. Fourteen of the new species isolated from these samples are members of the whorl-branched, light-spored genus Heterostelium (formerly Polysphondylium). The overall level of species richness of dictyostelids in Madagascar is greater than what is known for all of mainland Africa sampled to date. Levels of biodiversity in Madagascar were higher for mesic than for xeric vegetation types, and each of the newly described species of Heterostelium appeared to have a limited distribution among the localities sampled.

A new otarionine trilobite from the Henryhouse Formation (Silurian, Ludlow) of Oklahoma

1996 ◽  
Vol 70 (4) ◽  
pp. 611-614 ◽  
Author(s):  
Jonathan M. Adrain
Keyword(s):  
New Species ◽  
South Central ◽  
The Family ◽  
The World

Cyphaspis wessmani new species is a morphologically aberrant taxon from the Ludlow Henryhouse Formation of south-central Oklahoma. Its long, scoop-shaped cephalic border is without close comparison in the family Aulacopleuridae, but its possession of eleven thoracic segments with an axial spine on the sixth, an inflated glabella with tiny L1 and dorsal tuberculate sculpture, a prominently expressed bilobate eye socle, and a micropygous pygidium all support assignment to Cyphaspis. The genus is common in Silurian rocks from most parts of the world, but C. wessmani is the first published record from southern Laurentia.

Descriptions of Acrasid Cellular Slime Molds: Pocheina Rosea and a New Species, Pocheina Flagellata

Mycologia ◽  
1983 ◽  
Vol 75 (6) ◽  
pp. 1019-1029 ◽  
Author(s):  
L. S. Olive ◽  
Carmen Stoianovitch ◽  
W. E. Bennett
Keyword(s):  
New Species ◽  
Slime Molds ◽  
Cellular Slime ◽  
Cellular Slime Molds ◽  
A New Species

Rhagovelia of Madagascar and adjacent Indian Ocean islands (Heteroptera: Veliidae), Part 2: Revision of the tesari species group

2015 ◽  
Vol 46 (2) ◽  
pp. 115-220
Author(s):  
Dan A. Polhemus ◽  
Nils Möller Andersen
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Morphological Characters ◽  
Species Group ◽  
Current Paper ◽  
Species Status ◽  
Distribution Maps ◽  
South Central ◽  
Full Species ◽  
Southeastern Madagascar

Riffle bugs in the genus Rhagovelia have diversified extensively on the island of Madagascar. The current paper defines and segregates a distinct set of species within this endemic assemblage as the tesari species-group, containing the previously described species R. tesari Hoberlandt, R. adrienneaebrasili Poisson, R. hovana Hoberlandt, R. abalienata Hoberlandt, R. tsaratananae Poisson, and R. mohelii Poisson (originally described as a subspecies of R. tesari but here raised to full species status), as well as the following 13 new species described herein: R. aquacola n. sp., R. ambra n. sp., and R. sahabe n. sp. from northern Madagascar; R. mandraka n. sp., R. faratsihoi n. sp., and R. wenzeli n. sp. from central Madagascar; R. enckelli n. sp., R. takona n. sp., R. manga n. sp., R. brincki n. sp., and R. sandoka n. sp. from eastern Madagascar; R. andringitrae n. sp. from south-central Madagascar; and R. mondena n. sp. from southeastern Madagascar. Rhagovelia tesari flavomarginata Hoberlandt 1951 is synonymized under R. adrienneaebrasili Poisson 1945. Figures of key morphological characters, including male parameres are provided for all species, accompanied by distribution maps.

scholarly journals Dictyostelid Cellular Slime Molds from Christmas Island, Indian Ocean

mSphere ◽  
2019 ◽  
Vol 4 (2) ◽  
Author(s):  
Pu Liu ◽  
Yue Zou ◽  
Wenxiu Li ◽  
Yu Li ◽  
Xinru Li ◽  
...  
Keyword(s):  
Indian Ocean ◽  
Litter Layer ◽  
Slime Molds ◽  
Content Type ◽  
Christmas Island ◽  
Land Crabs ◽  
The World ◽  
Cellular Slime ◽  
The Indian Ocean ◽  
Cellular Slime Molds

ABSTRACT Christmas Island (10°30′S, 105°40′E) is an Australian external territory located in the Indian Ocean, approximately 350 km south of Java and Sumatra and about 1,550 km northwest of the closest point on the Australian mainland. In May 2017, 20 samples of soil/humus were collected on Christmas Island and processed for dictyostelid cellular slime molds. Four species were recovered. Two of these (Dictyostelium purpureum and Cavenderia aureostipes) are common and widely distributed throughout the world, but two other species (Dictyostelium insulinativitatis sp. nov. and Dictyostelium barbarae sp. nov.) were found to be new to science and are described here. IMPORTANCE Reported here are the results of a study for dictyostelids carried out on Christmas Island, Indian Ocean. Six isolates representing four species of dictyostelid cellular slime molds were obtained from two of the four localities from which samples were collected on the island. Two of the species (Dictyostelium insulinativitatis and D. barbarae) belong to the Dictyosteliaceae, genus Dictyostelium, and are new to science. These are described based on both morphology and phylogeny. The diversity and abundance of dictyostelids on Christmas Island appear to be low, which might in part be due to the abundance of land crabs, which considerably reduce the extent of the litter layer on the forest floor.

Cellular slime molds in tundra and forest soils of Alaska including a new species, Dictyostelium septentrionalis

1978 ◽  
Vol 56 (11) ◽  
pp. 1326-1332 ◽  
Author(s):  
James C. Cavender
Keyword(s):  
New Species ◽  
Forest Soils ◽  
Active Role ◽  
The Arctic ◽  
Slime Molds ◽  
Optimum Growth Temperature ◽  
Forest Region ◽  
Cellular Slime ◽  
Cellular Slime Molds ◽  
A New Species

The occurrence and distribution of cellular slime molds in Alaska were investigated. Particular emphasis was given to tundra soils since this habitat was not previously explored for cellular slime molds. Isolations were also made from the white spruce – aspen forest of the interior forest region and the western hemlock – Sitka spruce forest of the southeast coastal forest region. Three species Dictyostelium mucoroides, D. sphaerocephalum, and D. giganteum occur in tundra. The first two species are common and frequently very abundant indicating that cellular slime molds play an active role in tundra ecology. Six other species were found in forest soils. One, Dictyostelium septentrionalis, was found for the first time and is described as a new species. It is distinctive for its size and optimum growth temperature, which is below 20 °C. The study completes the investigation of the latitudinal distribution of cellular slime molds in the northern hemisphere, establishing their occurrence north of the Arctic Circle.

Diving into the unknown: fourteen new species of haplosclerid sponges (Demospongiae: Haplosclerida) revealed along the Peruvian coast (Southeastern Pacific)

Zootaxa ◽  
2022 ◽  
Vol 5087 (2) ◽  
pp. 201-252
Author(s):  
ANDRÉ BISPO ◽  
PHILIPPE WILLENZ ◽  
EDUARDO HAJDU
Keyword(s):  
Species Richness ◽  
New Species ◽  
Geographic Range ◽  
Marine Sponges ◽  
Southeastern Pacific ◽  
Peruvian Coast ◽  
The World ◽  
Great Species ◽  
First Time ◽  
Great Species Richness

The Peruvian coast is certainly one of the poorest studied areas in the world for marine sponges biodiversity, with only 20 species registered so far from over 2,400 km coastline. In spite of its great species richness worldwide, there is not a single record of Haplosclerida in Peru. Accordingly, in this study we aimed to describe the species belonging to this order present in the relatively recent collections undertaken along the Peruvian coast by two of us (PhW, EH). Here, we describe fourteen new species, provisionally endemic to the Peruvian coast. This finding represents a major addition to the knowledge of the biodiversity of sponges along the Peruvian coast, increasing the list of species known to occur in this area by about 68%. This is also the largest single proposal of new Haplosclerida in over 37 years of sponge taxonomy worldwide. Niphates is for the first time recorded in the Southeastern Pacific, and an identification key to the Haplosclerida from the Peruvian coast is provided. Regarding the distribution of the described species, most of them—except for Chalinula chelysa sp. nov.—have a narrow geographic range, which might indicate their rarity or that the haplosclerid fauna in Peru is still poorly known.  

A Checklist of Short-horned Grasshopper Species (Orthoptera: Caelifera) from Littoral Region of Cameroon with description of a new species of the genus Hemierianthus Saussure, 1903 (Orthoptera: Chorotypidae)

Zootaxa ◽  
2019 ◽  
Vol 4706 (2) ◽  
pp. 311-331
Author(s):  
JEANNE AGRIPPINE YETCHOM-FONDJO ◽  
SÉVILOR KEKEUNOU ◽  
MARTIN KENNE ◽  
ALAIN DIDIER MISSOUP ◽  
HUATENG HUANG ◽  
...  
Keyword(s):  
Species Richness ◽  
New Species ◽  
Sampling Method ◽  
Sampling Effort ◽  
Vegetation Types ◽  
Grasshopper Species ◽  
Littoral Region ◽  
High Species Richness ◽  
Study Sites ◽  
A New Species

The Littoral Region of Cameroon is one of the most highly disturbed regions in Cameroon that remain poorly studied and where no investigation regarding the grasshopper fauna has been conducted. Hence a survey was conducted from August 2015 to November 2018 in 11 localities of this region. In each locality, grasshoppers were sampled in three vegetation types (forests, fallows and cultivated farms) using sweep nets sampling method. We collected in total 51 short-horned grasshopper species belonging to the families Acrididae, Chorotypidae, Euschmidtiidae, Pyrgomorphidae and Thericleidae. Among these species, 43 belong to Acrididae, 5 to Pyrgomorphidae and only one belongs to the Chorotypidae, Euschmidtiidae and Thericleidae respectively. The Chorotypidae species Hemierianthus mbongueensis Yetchom & Xu sp.nov. is also described in this study. Twelve grasshopper species were widely distributed as they occurred in all study sites and 11 were recorded exclusively from one study site. This study showed that there is high species richness of short-horned grasshoppers in the Littoral Region of Cameroon. However, more sampling effort in different ecosystems of this region and other regions of Cameroon will certainly improve our understanding on grasshopper taxonomy, ecology and biogeography. 

Sign in / Sign up

Export Citation Format

Share Document