The second genus of the ‘libelluloid’ family Araripephlebiidae (Odonata, Clavilabiata)

2020 ◽  
Vol 3 (3) ◽  
pp. 240-244
Author(s):  
ANDRÉ NEL ◽  
JEAN-MARC POUILLON
Keyword(s):  
Lower Cretaceous ◽  
Hind Wing ◽  
Longitudinal Vein ◽  
Anal Area

The Lower Cretaceous Crato Formation is a well-known Konservat Lagerstätte with a very rich entomofauna. The Odonata are especially very diverse and extensively studied (Bechly, 1998, 2000, 2007, 2010; Nel et al., 1998; Bechly et al., 2001; Bechly & Ueda, 2002) with representatives of all the extant anisopteran main subgroups. This fauna is especially interesting because it comprises some of the oldest and most ‘basal’ groups of the highly diverse extant ‘libelluloid’ dragonflies, or Clavilabiata Bechly, 1996. Among these, the monospecific family Araripephlebiidae Bechly, 1998 is remarkable in the highly specialized hind wing cubito-anal area that contains a curious supplementary longitudinal vein more or less parallel to AA and CuA, unique among the Odonata. Nevertheless, this family remained rather poorly known by three described specimens, only females.

scholarly journals Completely preserved cockroaches of the family Mesoblattinidae from the Upper Jurassic-Lower Cretaceous Yixian Formation (Liaoning Province, NE China)

2013 ◽  
Vol 64 (4) ◽  
pp. 291-304 ◽  
Author(s):  
Dandan Wei ◽  
Dong Ren
Keyword(s):  
Lower Cretaceous ◽  
Hind Wing ◽  
Upper Jurassic ◽  
Morphological Characters ◽  
Yixian Formation ◽  
Liaoning Province ◽  
Tergal Glands ◽  
The Family ◽  
Left And Right ◽  
First Time

Abstract Although cockroaches were the dominant insects in various Paleozoic and Mesozoic insect assemblages, their general morphology was extremely conservative. One of the most common of them, the Jurassic-Cretaceous family Mesoblattinidae, is described here for the first time on the basis of completely preserved specimens. Ninety-two specimens of Perlucipecta aurea gen. et sp. n. reveal details of head, mandible, male tergal glands and terminal hook; cercal, leg and antennal sensilla. Its congener, P. vrsanskyi is described from the same sediments of the Yixian Formation (Upper Jurassic-Lower Cretaceous). The forewing venation variability of P. aurea, analysed for the first time in this family is nearly identical (CV = 6.23 %) with variability of two species of family Blattulidae that occur at the same locality (CV = 6.22 %; 5.72 %). The transitional nature of morphological characters represented by asymmetry between left and right wings (simple/branched forewing SC and hind wing M) in P. aurea documents the phylogenetic relation between the families Mesoblattinidae and Ectobiidae

scholarly journals A new sawfly of Megalodontesidae (Insecta, Hymenoptera, Pamphilioidea) with pectinate antennae from the Early Cretaceous of China

ZooKeys ◽  
2019 ◽  
Vol 893 ◽  
pp. 115-123 ◽  
Author(s):  
Yimo Wang ◽  
Mei Wang ◽  
ChungKun Shih ◽  
Alexandr P. Rasnitsyn ◽  
Jun Yao ◽  
...  
Keyword(s):  
Early Cretaceous ◽  
Lower Cretaceous ◽  
Hind Wing ◽  
Northeastern China ◽  
Yixian Formation ◽  
Wing Vein

A new sawfly of Megalodontesidae, Jibaissodes peichenaesp. nov., is described from the Lower Cretaceous Yixian Formation of Northeastern China. It is established mainly based on the pectinate antenna comprising 42 flagellomeres and the proximal 28 bearing apical rami, which gradually shorten in length toward the apex of the flagellum. The pterostigma of the forewing is infuscated apically and on the hind wing, vein 1-Rs is nearly equal to 1r-m and slightly shorter than 1-M. The first tergum is widely excised posteriorly and roundly protruding laterally alike in Megalodontes. This find supports that pectinate antennae in extant sawflies of Megalodontesidae originated at least during or before the Early Cretaceous.

Coxoplectoptera, a new fossil order of Palaeoptera (Arthropoda: Insecta), with comments on the phylogeny of the stem group of mayflies (Ephemeroptera)

2011 ◽  
Vol 42 (2) ◽  
pp. 101-138 ◽  
Author(s):  
Roman Godunko ◽  
Arnold Staniczek ◽  
Günter Bechly
Keyword(s):  
Hind Wing ◽  
Sister Group ◽  
The Other ◽  
Costal Margin ◽  
New Family ◽  
Insect Order ◽  
Fossil Insect ◽  
Stem Group ◽  
Other Hand ◽  
Anal Area

AbstractMickoleitia longimanus gen. et sp.n. is described from the Lower Cretaceous limestone of the Crato Formation in Brazil. It is attributed to a new family Mickoleitiidae and a new fossil insect order Coxoplectoptera within the palaeopterous Ephemerida, based on the presence of an elongated costal brace. This fossil insect exhibits a very peculiar combination of derived characters like specialized forelegs with strongly elongated, free coxae, single-clawed pretarsus, and distinctly skewed pterothorax as in dragonflies. On the other hand, several plesiomorphies are present that exclude this taxon from modern Ephemeroptera, namely large hind wings with widened anal area and numerous cross veins that separate the elongate costal brace from the costal margin. Fossil larvae described by Willmann as larval Cretereismatidae are herein attributed to Mickoleitiidae fam.n., based on the shared presence of broad hind wing buds with distinctly broadened anal area, wing bud venation similar to the adult holotype, and subchelate forelegs with elongate free coxae. These larvae are also highly autapomorphic in the structure of their abdominal gills and laterally flattened body with vertically oval section that is unique within Ephemerida. On the other hand they possess plesiomorphic lateral wing pads with pronounced articulation like Palaeozoic pterygote larvae, while wing pads in modern insects are always secondarily fused to the tergum. A similar fossil larva from the Jurassic of Transbaikals was earlier described as Mesogenesia petersae and classified within modern mayflies. It is herein attributed to Mickoleitiidae fam.n. Coxoplectoptera are recognized as putative sister group of modern Ephemeroptera based on the shared presence of only 7 pairs of abdominal gills, while Permoplectoptera still have retained 9 pairs of gills. The phylogenetic reclassification of the mayfly stem group by Willmann is critically discussed and modified.

An unusual ephemeropteran larva from the Lower Cretaceous dysodiles of Lebanon

2019 ◽  
Vol 2 (2) ◽  
pp. 192-198 ◽  
Author(s):  
DANY AZAR ◽  
CLOTILDE DE LA FERTÉ ◽  
LAYLA EL HAJJ ◽  
ANDRÉ NEL ◽  
SIBELLE MAKSOUD
Keyword(s):  
Fore Wing ◽  
Lower Cretaceous ◽  
Hind Wing ◽  
Incertae Sedis

Libanoephemera inopinatabranchia gen. and sp. nov., an ephemeropteran nymph from the Lower Barremian dysodiles of Lebanon, is herein characterized, described, illustrated and assigned to an incertae sedis family. It differs from all known ephemeropteran nymphs and is characterized by hypognathous mouthparts, hind wing pads not covered by fore wing pads, legs with five-segmented tarsi and presence of five pairs of gills on abdominal segments; abdominal segments I and III–V with two-branched gills; segment VI bearing complex gills with six branches.

Description of Caenoephemera shangyuanensis, gen.nov., sp.nov. (Ephemeroptera), from the Yixian Formation

2001 ◽  
Vol 133 (6) ◽  
pp. 747-754 ◽  
Author(s):  
Qi-Bin Lin ◽  
Di-Ying Huang
Keyword(s):  
Fore Wing ◽  
Lower Cretaceous ◽  
Hind Wing ◽  
Upper Jurassic ◽  
Yixian Formation ◽  
Mayfly Nymph ◽  
Tracheal Gills

AbstractA fossil mayfly nymph Caenoephemera shangyuanensis, gen.nov., sp.nov., discovered in the lower part of the Upper Jurassic – Lower Cretaceous Yixian Formation of Jianshangou, Beipiao district, West Liaoning, China, is described. It has several archaic features typical of Paleozoic mayfly nymphs, such as 5 tarsal segments and hind wing pads not covered by fore wing pads, but also exhibits specialized modern features, such as a short metathorax, abdominal tracheal gills, and cerci. It appears to be intermediate in structure between Paleozoic and extant mayfly nymphs.

The oldest fossil record of Lymexylidae (Insecta: Coleoptera) from the Lower Cretaceous Crato Formation of Brazil

2011 ◽  
Vol 42 (2) ◽  
pp. 205-212 ◽  
Author(s):  
Karin Wolf-Schwenninger
Keyword(s):  
Early Cretaceous ◽  
Lower Cretaceous ◽  
Fossil Record ◽  
Hind Wing ◽  
Wing Venation ◽  
New Taxon

AbstractThe fossil ship-timber beetle Cratoatractocerus grimaldii gen. et sp.n. is described from the Lower Cretaceous of Brazil. The new taxon is placed within Atractocerinae. It is distinguished from all modern genera of the subfamily by a M+Cu fork in the hind wing venation. Cratoatractocerus grimaldii is the oldest known representative of Lymexylidae and considered as the most basal member of Atractocerinae. This fossil proves that this subfamily appeared at least by the Early Cretaceous.

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