Results 1 to 10 of about 1,025 (146)

Dorsal sex pheromone glands in female Geometridae (Lepidoptera: Geometroidea): a new apomorphy of the family [PDF]

open access: yesEuropean Journal of Entomology, 2001
The female Geometridae are characterized by the presence of saccular pheromone glands. They are paired structures, invaginated anteriorly and located dorso-laterally to the rectum.
Amel BENDIB
exaly   +4 more sources

Unusual lizard fossil from the Miocene of Nebraska and a minimum age for cnemidophorine teiids [PDF]

open access: yesRoyal Society Open Science, 2020
Teiid lizards are well represented in the fossil record and are common components of modern ecosystems in North and South America. Many fossils were referred to the cnemidophorine teiid group (whiptails, racerunners and relatives), particularly from ...
Simon G. Scarpetta
doaj   +2 more sources

The first known fossil Uma: ecological evolution and the origins of North American fringe-toed lizards [PDF]

open access: yesBMC Evolutionary Biology, 2019
Background Fossil evidence suggests that extant North American lizard genera (north of Mexico) evolved during the Miocene. Although fossils of the clade Phrynosomatidae (spiny lizards and sand lizards) have been reported, there have been no previously ...
Simon G. Scarpetta
doaj   +2 more sources

Using the Fossil Record to Evaluate Timetree Timescales [PDF]

open access: yesFrontiers in Genetics, 2019
The fossil and geologic records provide the primary data used to established absolute timescales for timetrees. For the paleontological evaluation of proposed timetree timescales, and for node-based methods for constructing timetrees, the fossil record ...
Charles R. Marshall, Charles R. Marshall
doaj   +2 more sources

A remarkable new genus of Thripinae (Thysanoptera, Thripidae) without anteocellar setae from India [PDF]

open access: yesZooKeys, 2023
Nandithrips pouzolziae gen. et sp. nov. (Thripidae, Thripinae) is described from the flowers of Pouzolzia petandra subsp. wightii (Urticaceae) found in Nandi hills, Karnataka, India.
Remani Rajan Rachana   +3 more
doaj   +3 more sources

Comparative morphology of the musculature of the sting apparatus in Ampulex compressa (Hymenoptera, Ampulicidae) and Sceliphron destillatorium (Hymenoptera, Sphecidae) [PDF]

open access: yesDeutsche Entomologische Zeitschrift, 2021
The sting apparatus of aculeate Hymenoptera is derived from the ovipositor and is their most prominent apomorphy. In contrast to the frequently analysed sclerites of the sting apparatus, the associated musculature has largely been neglected.
Stefan Graf   +2 more
doaj   +3 more sources

A new report of phytomelanin in cypselae of Vernonieae: the case of the type species of Lychnophora Mart

open access: yesAnais da Academia Brasileira de Ciências, 2021
Phytomelanin is a mechanically hard, blackish, and inert substance rarely found in plants. In Asteraceae, this substance was historically associated with the Heliantheae alliance, but recent studies have observed it in unrelated groups as Heterocoma and ...
DANILO MARQUES   +2 more
doaj   +1 more source

Anatomical notes and discussion of the first described aetosaur Stagonolepis robertsoni (Archosauria: Suchia) from the Upper Triassic of Europe, and the use of plesiomorphies in aetosaur biochronology [PDF]

open access: yesPeerJ, 2018
Stagonolepis robertsoni, from the Late Triassic of Scotland, was the first named aetosaurian. Known mostly from a series of natural molds from two localities, the osteology of this taxon has been difficult to interpret.
William G. Parker
doaj   +2 more sources

Oreocharis xieyongii, an unusual new species of Gesneriaceae from western Hunan, China

open access: yesPlant Diversity, 2022
A new species, Oreocharis xieyongii T. Deng, D.G. Zhang & H. Sun, from Hunan Province, central China, is described. The combination of purple zygomorphic corolla with longer adaxial lobes and exserted stamens defines the species and discriminates it ...
Zhen-Yu Lv   +8 more
doaj   +1 more source

Pterosaurs from the Late Cretaceous of Angola

open access: yesDiversity, 2022
Here, we describe the first pterosaur remains from Angola, an assemblage of fourteen bones from the Lower Maastrichtian marine deposits of Bentiaba, Namibe Province. One new species is introduced, Epapatelo otyikokolo, gen. et sp.
Alexandra E. Fernandes   +6 more
doaj   +1 more source

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