Giant among dwarfs: Meganannus lewisi, gen. n. and sp. n., a new genus and species of minute litter bugs from Costa Rica (Hemiptera: Schizopteridae)

Weirauch, Christiane; Whorrall, Kyle; Knyshov, Alexander; Hoey-Chamberlain, Rochelle

doi:10.11646/zootaxa.4370.2.4

Cited by 844 publications

(8 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Despite comprising only c . 350 described species (Weirauch et al ., ), it is the largest family of the heteropteran infraorder Dipsocoromorpha for which several hundred species remain to be described. Schizopteridae are minute (total length 1–2 mm) and typically dwell in leaf litter and other cryptic tropical forest microhabitats.…”

Section: Introductionmentioning

confidence: 99%

Hybrid enrichment of poorly preserved museum specimens refines homology hypotheses in a group of minute litter bugs (Hemiptera: Dipsocoromorpha: Schizopteridae)

Knyshov

Hoey-Chamberlain

Weirauch

2019

Systematic Entomology

Self Cite

View full text Add to dashboard Cite

Although they are a valuable source of specimens, insect natural history collections continue to be under‐utilized in molecular systematics, mostly due to difficulties in obtaining DNA sequences. Old specimens or specimens stored under suboptimal conditions are intractable for traditional Sanger sequencing. In this study we use an inexpensive hybrid capture with in‐house generated baits to retrieve commonly utilized ribosomal and mitochondrial loci from old museum specimens and combine them with a Sanger‐generated dataset comprising recently collected material. We focus on the Corixidea genus group (Schizopteridae), which comprises rarely collected, small (1–2 mm) and primarily tropical insects of which only c. 10–20% of the species have been described. A molecular phylogeny is needed to resolve relationships and revise the genus‐level classification to correctly place the c. 150 yet to be described species. Applying this approach, we constructed a dataset, containing 101 taxa, 11 of which were preserved in low‐percentage ethanol, 48 are dry and point‐mounted, and 40 are > 20 years old at DNA extraction. The obtained data proved sufficient for reconstructing a well‐supported phylogeny with c. 50% of the predicted diversity, and for the oldest successfully sequenced specimen (95 years) to be unambiguously placed in that phylogeny. We confirmed monophyly of the Corixidea genus group, showed paraphyly of the genus Corixidea, and recovered nine well‐supported clades within the group. Ancestral character states of selected morphological features were inferred and used to re‐examine primary homology hypotheses and inform an upcoming taxonomic revision.

show abstract

Section: Introductionmentioning

confidence: 99%

Hybrid enrichment of poorly preserved museum specimens refines homology hypotheses in a group of minute litter bugs (Hemiptera: Dipsocoromorpha: Schizopteridae)

Knyshov

Hoey-Chamberlain

Weirauch

2019

Systematic Entomology

Self Cite

View full text Add to dashboard Cite

show abstract

“…The small true bug family Schizopteridae (Hemiptera: Heteroptera) in the infraorder Dipsocoromorpha contains approximately 355 described species (Emsley 1969, Hill 1984, McAtee and Malloch 1925, Weirauch et al 2018, Wygodzinsky 1955). Although several species occur in temperate regions in Japan, Tasmania, and New Zealand, the great majority of species have been described from wet tropical and subtropical areas around the globe (Emsley 1969, Knyshov et al 2016, Wygodzinsky 1951).…”

Section: Introductionmentioning

confidence: 99%

Synopsis of Schizopteridae (Hemiptera, Heteroptera, Dipsocoromorpha) from the United States, with description of seven new species from the US and Mexico

Weirauch¹,

Hoey-Chamberlain²,

Knyshov³

2018

Self Cite

View full text Add to dashboard Cite

Because species diversity of the small true bug family Schizopteridae is greatest in tropical and subtropical areas, it is not surprising that only four species have been described from the United States. As part of a larger project on the taxonomy and phylogenetics of Schizopteridae, 178 specimens from the United States were examined. This material contained representatives of the previously described species Glyptocombussaltator Heidemann, 1906, Corixideamajor McAtee & Malloch, 1925, Nannocorisarenarius Blatchley, 1926, and Schizopterabispina McAtee & Malloch, 1925, but also six undescribed species. These new taxa are described as Glyptocombushalbertaesp. n., Glyptocombussuterisp. n., Nannocorisanophorussp. n., Nannocorisbrevipilussp. n., Schizoptera (Cantharocoris) rileyisp. n., and Schizoptera (Schizoptera) henryisp. n. Habitus images and genitalic illustrations of the previously described and the new species are provided as well as a map showing distribution ranges of these species in the United States and Mexico. To provide a comprehensive treatment of the small genus Glyptocombus Heidemann, 1906, Glyptocombusmexicanussp. n. is also described that, to our knowledge, occurs only in Mexico, and the female of one additional undescribed Glyptocombus species is documented from Mexico.

show abstract

“…A recent surge in revisionary taxonomic research has started to document the vast undescribed diversity at the species level, while also discovering and describing new genera (e.g. Hill, 2014, 2015; Weirauch and Frankenberg, 2015; Knyshov et al, 2016; Leon and Weirauch, 2016a, 2016b; Weirauch et al, 2018c).…”

Section: Introductionmentioning

confidence: 99%

Phylogenetic relationships and revised classification of the true bug infraorder Dipsocoromorpha (Insecta: Hemiptera: Heteroptera)

2020

Self Cite

View full text Add to dashboard Cite

Currently comprising only about 430 species, Dipsocoromorpha or minute litter bugs are one of the small infraorders of Heteroptera. They are classified into five morphologically distinct families--Ceratocombidae, Dipsocoridae, Hypsipterygidae, Schizopteridae and Stemmocryptidae--but relationships among and within these families are poorly understood owing to the lack of phylogenetic studies. A phylogenetic hypothesis based on combined molecular and morphological data is important to both evaluate and revise the higher-level classification and to explore the evolutionary history of morphological features including elytriform (or beetle-like) forewings, that seem to have evolved multiple times in this group, jumping devices, and the highly modified and diverse male genitalia. We here use a dataset combining Sanger-derived (~4500 bp; 108 taxa) and Illumina-generated (~7500 bp; 24 taxa) sequence data with a morphological matrix (159 characters) and taxon sampling that comprises all currently recognized family-, subfamily-and tribal-level taxa and comprehensive genus-level sampling to investigate phylogenetic relationships within litter bugs. Our results support the monophyly of Dipsocoromorpha, Schizopteridae and Dipsocoridae, whereas Ceratocombidae and the schizopterine subfamily "Ogeriinae" are polyphyletic and paraphyletic, respectively. A new classification is proposed that recognizes six families, including Trichotonannidae, stat.n., and two subfamilies each within the two larger families Ceratocombidae and Schizopteridae. Ancestral state reconstructions outline the complex evolutionary history of many morphological characters, including 15 independent origins of elytriform forewings, and at least five shifts in the degree of genitalic asymmetry.

show abstract

Giant among dwarfs: Meganannus lewisi, gen. n. and sp. n., a new genus and species of minute litter bugs from Costa Rica (Hemiptera: Schizopteridae)

Cited by 844 publications

References 0 publications

Hybrid enrichment of poorly preserved museum specimens refines homology hypotheses in a group of minute litter bugs (Hemiptera: Dipsocoromorpha: Schizopteridae)

Hybrid enrichment of poorly preserved museum specimens refines homology hypotheses in a group of minute litter bugs (Hemiptera: Dipsocoromorpha: Schizopteridae)

Synopsis of Schizopteridae (Hemiptera, Heteroptera, Dipsocoromorpha) from the United States, with description of seven new species from the US and Mexico

Phylogenetic relationships and revised classification of the true bug infraorder Dipsocoromorpha (Insecta: Hemiptera: Heteroptera)

Contact Info

Product

Resources

About