• A study aiming to estimate the taxonomic diversity of insects in deep time is published by Schachat
et al. (2019). • A study on the phylogenetic relationships of the
Carboniferous insect
Stephanastus polinae is published by Beutel, Yan & Kukalová-Peck (2019). • A study on the age and depositional environment of the Xiaheyan insect fauna (
Ningxia,
China) is published online by Trümper
et al. (2019). • A study on 240-million-year-old insect fossils from the Mount San Giorgio
Lagerstätte (
Switzerland–
Italy), evaluating their implications for the knowledge of the time scale of insect evolution, is published by Montagna
et al. (2019). • A study on insect fossils from the
Upper Triassic Laohugou Formation (
Hebei,
China) is published by Huang
et al. (2019). • The earliest evidence of exophytic
oviposition (eggs laid directly on the outer surface of plants) known so far, in the form of insect eggs (probably produced by
roachoids) preserved on plant fossils, is reported from the
Carboniferous (
Gzhelian) of the Saale Basin (
Germany) by Laaß & Hauschke (2019). • A study on the frequency and diversity of damage types caused by insect oviposition in plants from the
Upper Triassic Yangcaogou Formation,
Middle Jurassic Jiulongshan Formation and
Lower Cretaceous Yixian Formation (
China), assessing the degree of plant host specificity, is published by Lin
et al. (2019). • A study on the plant specimens (ferns, gymnosperms and angiosperms) from the
Lower Cretaceous Araripe Basin (
Brazil) preserving evidence of plant–insect interactions and potentially of paleoecological relationships between plants and insects is published by Edilson Bezerra dos Santos Filho
et al. (2019). • Leaves of members of the family
Nymphaeaceae preserving evidence of insect herbivory are reported from the
Albian Utrillas Formation (
Spain) by Estévez-Gallardo
et al. (2019). • A study on changes in insect and plant communities across the
Paleocene–
Eocene boundary within the Hanna Basin (
Wyoming, United States) is published by Azevedo Schmidt
et al. (2019). • A study on insect
pupation structures from the
Campanian dinosaur nesting site at the Egg Mountain locality (
Two Medicine Formation;
Montana, United States) is published by Freimuth & Varricchio (2019). • Redescription and a study on the phylogenetic relationships of a
Permian orthopteran
Vologdoptera maculata is published by Aristov & Gorochov (2019). • A study on the phylogenetic relationships of the
Paleocene orthopteran
Hylophalangopsis chinensis is published by Wang
et al. (2019). • 308-million-years-old female
palaeodictyopteran
nymphs, preserving large pointing structures interpreted as
ovipositors, are described from the Piesberg quarry in northwestern
Germany by Kiesmüller
et al. (2019). • A study on the anatomy of immature stages and adult specimens of members of Palaeodictyopterida, evaluating its implications for different hypotheses about lifestyle strategies of these insects, is published by Prokop
et al. (2019). • A revision of
phyloblattid and
compsoblattid blattodeans from the
Carboniferous (
Kasimovian) of the Souss basin (southwestern
High Atlas mountains,
Morocco) is published by Belahmira
et al. (2019). • A fossil
ootheca resembling those of extant
mantises is described from the
Cretaceous amber from
Myanmar by Li & Huang (2019). • An assemblage of 14
dictyopterans is reported from the
Santonian amber from Yantardakh (
Taymyr Peninsula,
Russia) by Vršanský (2019). • A study on the anatomy and life habits of
alienopterans is published by Wipfler
et al. (2019). • A redescription of a female and a description of a male of the
parvaverrucosid species
Parvaverrucosa annulata from the Cretaceous amber from Myanmar is published by Węgierek, Cai & Huang (2019). • A gregarious assemblage of
protopsyllidioids belonging to the genus
Postopsyllidium is reported from a single piece of the Cretaceous amber from Myanmar by Hakim, Azar & Huang (2019). • A redescription of the fossil
water strider species
Aquarius lunpolaensis based on new specimens from the Lunpola and Nima basins of central
Tibet is published by Cai
et al. (2019). • New specimens of
Mesodiphthera grandis are described from the
Norian insect locality at Dinmore (
Queensland,
Australia) by Lambkin (2019), who interprets this taxon as a
hairy cicada and the oldest known
cicada reported so far. • A group of
heteropteran
nymphs preserved together with their eggs, including two nymphs caught in the act of hatching, is described from the
Dominican amber by Hörnig, Fischer & Haug (2019). • A female specimen of the
myopsocid species
Myopsocus arthuri is described from the
Dominican amber by Hakim
et al. (2019). • A study on the phylogenetic relationships of fossil
ichneumonid wasps is published by Klopfstein & Spasojevic (2019), who transfer the species
"Plectiscidea" lanhami to the genus
Allomacrus. • A fossilized hind wing of a member of the family Ichneumonidae is described from a
Calabrian sandstone from
Madeira by Góis-Marques
et al. (2019). • Revision of fossil
figitids from the Late Eocene of
Florissant (
United States) and from the Oligocene–Miocene boundary of Rott-am-Siebengebirge (
Germany) is published by Pujade-Villar & Peñalver (2019). • A study on the evolutionary history of
colletid bees belonging to the group
Neopasiphaeinae, as indicated by phylogenetic,
biogeographic and paleontological data, is published by Almeida
et al. (2019). • The first
corydalid larva preserved with gut contents is described from the Lower Cretaceous
Yixian Formation (
China) by Zhao
et al. (2019). • Seed of the
ginkgoalean Yimaia capituliformis with damage interpreted as likely oviposition lesions inflicted by a
kalligrammatid lacewing is described from the
Middle Jurassic Jiulongshan Formation (
China) by Meng
et al. (2019). • A long-necked neuropteran larva, preserving a unique combination of anatomical characters present in various neuropterans families, is described from the Cretaceous amber from
Myanmar by Haug
et al. (2019). • A larval lacewing with unusually large mandibulo-maxillary piercing stylets is described from the Cretaceous amber from Myanmar by Haug, Müller & Haug (2019). • A neuropteran larva with prominent curved stylets is described from the Cretaceous amber from Myanmar by Haug, Müller & Haug (2019). • A late
instar strepsipteran larva, probably belonging to the genus
Mengea, is described from the
Eocene Baltic amber by Pohl
et al. (2019). • A review of plants, fungi and animals found associated with fossil beetles from Myanmar,
Dominican and
Mexican amber is published by
Poinar (2019). • A study on the phylogenetic relationships of
Tunguskagyrus is published by Beutel, Yan & Lawrence (2019). • A study on the phylogenetic relationships of
Leehermania prorova is published online by Fikáček
et al. (2019). • Extremely miniaturized insects interpreted as larvae of beetles belonging to the family
Ripiphoridae and the subfamily
Ripidiinae are described from the Cretaceous amber from Myanmar by Batelka
et al. (2019). • A male specimen of the
monotomid beetle species
Cretakarenni birmanicus is described from the Cretaceous amber from Myanmar by Jiang, Liu & Wang (2019). • A protrusible prey-capture apparatus is reported in two
stenine rove beetles from the
Cretaceous amber from
Myanmar (a specimen of
Festenus gracilis and a specimen representing a new species of
Festenus) by Cai
et al. (2019). • The first case of aggregation behaviour of the rove beetle
Clidicostigus arachnipes is reported from the Cretaceous amber from Myanmar by Yin & Zhuo (2019). • Six well-preserved specimens of the
silvanid beetle
Protoliota, confirming the presence of remarkable
sexual dimorphism in this genus, are reported from the Cretaceous amber from Myanmar by Cai & Huang (2019). • A study on the phylogenetic relationships of extant and fossil members of the
scarab beetle subfamily
Aclopinae is published by Neita-Moreno
et al. (2019). • A
flower chafer belonging to the tribe
Trichiini is described from the
Baltic amber by Alekseev (2019), representing the earliest fossil record of the tribe Trichiini and the first known flower chafer in Baltic amber. • Two beetle larvae with unusually large terminal end compared to that in extant forms, identified as representatives of
Scraptiidae, are described from the
Eocene Baltic amber by Haug & Haug (2019). • A study comparing extant beetle fauna from
Maungatautari (
New Zealand) with the late
Holocene beetle assemblage from two central
North Island fossil sites is published by
Watts et al. (2019). • Poisonous
setae are identified in a small caterpillar from the Eocene
Baltic amber by
Poinar & Vega (2019). • A revision of putative fossil members of the family
Hepialidae is published by Simonsen, Wagner & Heikkilä (2019). • A study on the
holotype specimen of the
Late Jurassic acrocerid fly
Archocyrtus kovalevi is published by Khramov & Lukashevich (2019), who report evidence of an extremely long
proboscis, almost twice the length of the body of this insect. • A study on the phylogenetic relationships of extant and fossil acrocerid flies is published by Gillung & Winterton (2019). • A study on the phylogenetic relationships of the
Cretaceous members of the family
Ceratopogonidae is published by Borkent (2019). • A study on the morphology and phylogenetic relationships of
Lebanoculicoides daheri, as indicated by data from a male specimen from the Cretaceous
Lebanese amber, is published by Borkent (2019). • The first record of
chironomid larva from amber, comparable to larvae of modern representatives of the genus
Bryophaenocladius, is reported from the
Eocene Baltic amber by Baranov
et al. (2019). ==References==