scholarly journals Two new species of Phialiphora (Spermacoceae, Rubiaceae) exemplify drought adaptations in western Madagascar

2020 ◽  
Vol 153 (2) ◽  
pp. 267-282
Author(s):  
Petra De Block ◽  
Franck Rakotonasolo ◽  
Alexander Vrijdaghs ◽  
Steven Dessein

Background – Phialiphora (Spermacoceae, Rubiaceae) is a herbaceous genus restricted to unconsolidated white sands in open spaces in dry forests in northwestern Madagascar. The genus is characterized by the semi-succulent nature of its leaves and stems, its basal leaf rosette, its head-like inflorescences subtended by large leaf-like involucrate bracts and its isostylous flowers. Hitherto, only two species were described.Methods – Classical methods of herbarium taxonomy are followed.Key results – Two new Phialiphora species, P. glabrata De Block and P. valida De Block, are described, which brings the number of species in the genus to four. The two new species differ from the two previously described species by their glabrous branches, bracts, ovaries, calyces and fruits. They are easily distinguished from each other by the shape and size of the calyx lobes. A detailed description, illustration, distribution map and preliminary conservation assessment is given for the new species, which are assessed as critically endangered. We also present a key for the genus and discuss in detail the typical branching system, the capsules and the dispersal mechanism of Phialiphora. The description of these two new species exemplifies the uniqueness of the dry vegetations on unconsolidated white sands in western Madagascar, which are characterized by a high level of endemicity.

Zootaxa ◽  
2021 ◽  
Vol 4958 (1) ◽  
pp. 34-44
Author(s):  
DAN A. POLHEMUS

Two new species of Ocyochterus are described, O. graziae from Ecuador, and O. gilloglyi from Panama, and compared to the other two Andean species previously known in the genus. Dorsal habitus and anterior head photos are provided for all described species of Ocyochterus, and photomicrographs are provided for the male genitalic structures of O. graziae and O. gilloglyi. A distribution map is provided for all species in the genus. 


Phytotaxa ◽  
2021 ◽  
Vol 496 (3) ◽  
pp. 281-293
Author(s):  
LUÍS A. FUNEZ ◽  
GUSTAVO HASSEMER ◽  
NIVALDO PERONI ◽  
ELISANDRO R. DRECHSLER-SANTOS

Margyricarpus pinnatus is a poorly understood entity from natural grasslands of South America that it better considered as a species complex. In this work we contribute to the advancement of the taxonomic knowledge of this challenging species complex by describing two new species of Margyricarpus from southern Brazil. We present field photographs, illustrations, a distribution map and ecologic and conservation notes on the new species.


Zootaxa ◽  
2018 ◽  
Vol 4526 (2) ◽  
pp. 175
Author(s):  
RAFAEL SOBRAL ◽  
PASCHOAL C. GROSSI ◽  
JOSÉ W. DE MORAIS

Two new species of Aegopsis Burmeister, 1847 (Coleoptera: Scarabaeidae: Dynastinae: Agaocephalini), Aegopsis diceratops Sobral & Grossi new species and Aegopsis vazdemelloi Sobral & Grossi new species, are described and illustrated based on specimens collected in Cerrado habitat in the Brazilian states of Minas Gerais and Mato Grosso. The new species are similar to A. bolboceridus (Thomson, 1860). A redescription of A. bolboceridus is provided along with remarks comparing characters among these three species. A distribution map and a male and female key to the species in the genus are provided. 


2020 ◽  
Vol 29 (1) ◽  
pp. 101-114
Author(s):  
Oskar V. Conle ◽  
Frank H. Hennemann ◽  
Pablo Valero

Two new species of Taraxippus Moxey, 1971 are described and illustrated: T. samaraesp. nov. from Costa Rica and Panama and T. perezgelabertisp. nov. from the Dominican Republic. Both sexes and the previously unknown eggs are described. The genus is recorded from Central America for the first time. A distribution map and a discussion of the distributional pattern of Taraxippus are provided.


Phytotaxa ◽  
2021 ◽  
Vol 516 (1) ◽  
pp. 28-42
Author(s):  
XIN GU ◽  
RONG FU ◽  
RUI WANG ◽  
JING-ZU SUN

During an investigation of fungicolous fungi associated with mushrooms in China, four boleticolous fungi were collected from Sichuan Province. Based on the morphological features and multi-gene phylogenetic analyses this study introduces two new species, Hypomyces ampullaris, and H. sichuanensis. The new species are described and illustrated comprehensively and compared with their related fungi. Hypomyces ampullaris is similar to Sepedonium ampullosporum in forming candelabrum-like conidiophores and producing ampulliform conidia but differs from the latter in having shorter phialides and smaller ampulloconidia. Hypomyces sichuanensis is similar to H. chrysospermus, H. microspermus, and Sepedonium laevigatum in forming poorly developed verticills conidiophores and the shape and size of aleurioconidia. However, the asexual spores of H. sichuanensis averaged somewhat smaller than those of H. chrysospermus and S. laevigatum, and larger than that of H. microspermus. Additionally, H. ampullaris and H. sichuanensis distinct from their close relatives in no pigment discoloration of the PDA medium. These species introduced here, improve our understanding of the diversity of Hypomyces, especially of the boleticolous Hypomyces in China.


Zootaxa ◽  
2021 ◽  
Vol 4926 (4) ◽  
pp. 559-572
Author(s):  
ADELINE SOULIER-PERKINS ◽  
MAXIME LE CESNE

The lophopid genus Zophiuma Fennah, 1955 is revised with two new species described, Z. gitauae sp. nov. and Z. torricelli sp. nov. and Z. doreyensis (Distant, 1906) is placed in synonymy with Z. pupillata (Stål, 1863). A key to the species for the genus, distribution map and the male genitalia illustrations are provided.


Phytotaxa ◽  
2019 ◽  
Vol 397 (4) ◽  
pp. 280
Author(s):  
RODRIGO ALEJANDRO HERNÁNDEZ-CÁRDENAS ◽  
ANA ROSA LÓPEZ-FERRARI ◽  
ADOLFO ESPEJO-SERNA

Hechtia gypsophila and H. minuta, two new species from Oaxaca, Mexico are described and illustrated. The proposed species are compared with H. pumila, taxon that present some similarities and also with other species that grow near the type localities of the two new taxa proposed. Images and a distribution map of all taxa are included.


Zootaxa ◽  
2019 ◽  
Vol 4568 (3) ◽  
pp. 548
Author(s):  
JUSTIN B. RUNYON

Two new species of the long-legged fly genus Hurleyella Runyon & Robinson, 2010 are described and illustrated: Hurleyella belizensis sp. nov. from Belize and Hurleyella salina sp. nov. from alkali areas of the Northern Rockies of the USA (Idaho, Montana, Wyoming). The discovery of these new species greatly extends the known distribution of Hurleyella northward in the Nearctic and southward into the Neotropics. Notes, photos of habitats, a distribution map, and a key to the four known species of Hurleyella are provided. 


Phytotaxa ◽  
2019 ◽  
Vol 408 (2) ◽  
pp. 136-142 ◽  
Author(s):  
JOEL CALVO ◽  
HAMILTON BELTRÁN

Two new species of Werneria are described from the central Andes. Both species are compared with the morphologically closest taxa and useful characters for their proper identification are provided. Detailed pictures of living plants and a distribution map are also presented.


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