<i>Anomocephalobus</i>, a new genus of minute marsh-loving beetles from mid-Cretaceous Burmese amber (Coleoptera: Limnichidae)

Limnichidae are currently a moderately diverse beetle family with a sparse fossil record. Here we describe a new limnichid genus and species, Anomocephalobus liuhaoi Li, Jäch & Cai gen. et sp. nov., from the mid-Cretaceous amber from northern Myanmar. Anomocephalobus gen. nov. is tentatively assigned to the extant subfamily Cephalobyrrhinae, based on its transverse metacoxae, 5-segmented protarsi, and absence of grooves on the ventral surface for reception of legs, though its oval body shape is somewhat deviating from extant Cephalobyrrhinae. The generic placement of the recently described Erichia cretacea Yu, Ślipiński, Ren & Pang, 2018 is also discussed.

KEY WORDS:
Mesozoic; fossil; taxonomy; Myanmar; Cephalobyrrhinae

Authorship

Yan-Da Li

State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, and Centre for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences. Nanjing 210008, China.Chinese Academy of SciencesChinaNanjing, ChinaState Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, and Centre for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences. Nanjing 210008, China.

http://orcid.org/0000-0002-9439-202X

Ya-Li Yu

Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences. Guangzhou 510260, China.Guangdong Academy of SciencesChinaGuangzhou, ChinaGuangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences. Guangzhou 510260, China.

http://orcid.org/0000-0003-3275-1637

Manfred A. Jäch

Naturhistorisches Museum Wien. Burgring 7, 1010 Vienna, Austria.Naturhistorisches Museum WienAustriaVienna, AustriaNaturhistorisches Museum Wien. Burgring 7, 1010 Vienna, Austria.

http://orcid.org/0000-0002-2990-3604

Di-Ying Huang

http://orcid.org/0000-0002-5637-4867

Chen-Yang Cai

School of Earth Sciences, University of Bristol. Life Sciences Building, Tyndall Avenue, Bristol BS8 1TQ, United Kingdom.University of BristolUnited KingdomBristol, United KingdomSchool of Earth Sciences, University of Bristol. Life Sciences Building, Tyndall Avenue, Bristol BS8 1TQ, United Kingdom.

http://orcid.org/0000-0002-9283-8323

Corresponding author: Chen-Yang Cai (cycai@nigpas.ac.cn)

Editorial responsibility

Gabriel L.F. Mejdalani

Author Contributions

Y-DL and C-YC conceived the study. Y-DL acquired and processed the photomicrographs. Y-DL and C-YC drafted the manuscript, to which Y-LY and MAJ contributed. All authors commented on the manuscript and gave final approval for publication.

Competing Interests

The authors have declared that no competing interests exist.

Data Availability

The original confocal data are available in Zenodo repository (https://doi.org/10.5281/zenodo.5809388).

SCIMAGO INSTITUTIONS RANKINGS

Naturhistorisches Museum Wien. Burgring 7, 1010 Vienna, Austria.Naturhistorisches Museum WienAustriaVienna, AustriaNaturhistorisches Museum Wien. Burgring 7, 1010 Vienna, Austria.

Figures

Figures (5)

Thumbnail

Figures 1-2
General habitus of Anomocephalobus liuhaoi gen. et sp. nov., holotype, NIGP177044, under incident light: (1) dorsal view; (2) ventral view. Scale bars: 1 mm.

Thumbnail

Figures 3-4
General habitus of Anomocephalobus liuhaoi gen. et sp. nov., holotype, NIGP177044, under widefield fluorescence: (3) dorsal view; (4) ventral view. Scale bars: 1 mm.

Thumbnail

Figures 5-13
Details of Anomocephalobus liuhaoi gen. et sp. nov., holotype, NIGP177044, under confocal microscopy: (5) mouthparts, ventral view; (6) antenna, dorsal view; (7) compound eye, dorsal view; (8) compound eye, ventral view; (9) crenulate posterior pronotal margin (arrowhead), dorsal view; (10) pronotal hypomeron, ventral view; (11) mesothorax, ventral view; (12) metacoxa, ventral view; (13) ovipositor, ventral view. (an1-11) antennomeres 1-11, (cl) clypeus, (el) elytron, (ey) compound eye, (hy) hypomeron, (lb) labrum, (msv) mesoventrite, (mtc) metacoxa, (mttc) metatrochanter, (mtv) metaventrite, (ov) ovipositor, (pn) pronotum, (ps) prosternum, (v5) ventrite 5. Scale bars: 200 μm.

Thumbnail

Figures 14-16
Extant and extinct species of Erichia: (14) Erichia longicornis (= Jaechobyrrhinus amanosius), holotype of Jaechobyrrhinus amanosius, under incident light; (15-16) Erichia cretacea, holotype, CNU-COL-MA2018001, under widefield fluorescence. Scale bars: 500 μm.

Thumbnail

Figures 17-22
Details of Erichia cretacea, holotype, CNU-COL-MA2018001, under confocal microscopy: (17) head, ventral view; (18) pro- and mesothorax, ventral view; (19) metathorax, ventral view, showing the presence of median discrimen and katepisternal suture; (20) abdomen, ventral view; (21) prothorax, dorsal view, showing the crenulate posterior pronotal margin (arrowhead); (22) elytral apex, dorsal view. (cl) clypeus, (el) elytron, (fr) frons, (hy) hypomeron, (lb) labrum, (mtc) metacoxa, (mttb) metatibia, (mtv) metaventrite, (mxp) maxillary palp, (pf) profemur, (pn) pronotum, (ps) prosternum, (v2-5) ventrites 2-5. Scale bars: 200 μm.

Figures 1-2 General habitus of Anomocephalobus liuhaoi gen. et sp. nov., holotype, NIGP177044, under incident light: (1) dorsal view; (2) ventral view. Scale bars: 1 mm.

Figures 3-4 General habitus of Anomocephalobus liuhaoi gen. et sp. nov., holotype, NIGP177044, under widefield fluorescence: (3) dorsal view; (4) ventral view. Scale bars: 1 mm.

Figures 5-13 Details of Anomocephalobus liuhaoi gen. et sp. nov., holotype, NIGP177044, under confocal microscopy: (5) mouthparts, ventral view; (6) antenna, dorsal view; (7) compound eye, dorsal view; (8) compound eye, ventral view; (9) crenulate posterior pronotal margin (arrowhead), dorsal view; (10) pronotal hypomeron, ventral view; (11) mesothorax, ventral view; (12) metacoxa, ventral view; (13) ovipositor, ventral view. (an1-11) antennomeres 1-11, (cl) clypeus, (el) elytron, (ey) compound eye, (hy) hypomeron, (lb) labrum, (msv) mesoventrite, (mtc) metacoxa, (mttc) metatrochanter, (mtv) metaventrite, (ov) ovipositor, (pn) pronotum, (ps) prosternum, (v5) ventrite 5. Scale bars: 200 μm.

Figures 14-16 Extant and extinct species of Erichia: (14) Erichia longicornis (= Jaechobyrrhinus amanosius), holotype of Jaechobyrrhinus amanosius, under incident light; (15-16) Erichia cretacea, holotype, CNU-COL-MA2018001, under widefield fluorescence. Scale bars: 500 μm.

Figures 17-22 Details of Erichia cretacea, holotype, CNU-COL-MA2018001, under confocal microscopy: (17) head, ventral view; (18) pro- and mesothorax, ventral view; (19) metathorax, ventral view, showing the presence of median discrimen and katepisternal suture; (20) abdomen, ventral view; (21) prothorax, dorsal view, showing the crenulate posterior pronotal margin (arrowhead); (22) elytral apex, dorsal view. (cl) clypeus, (el) elytron, (fr) frons, (hy) hypomeron, (lb) labrum, (mtc) metacoxa, (mttb) metatibia, (mtv) metaventrite, (mxp) maxillary palp, (pf) profemur, (pn) pronotum, (ps) prosternum, (v2-5) ventrites 2-5. Scale bars: 200 μm.

How to cite

copy

Sociedade Brasileira de Zoologia Caixa Postal 19020, 81531-980 Curitiba PR Brasil, Tel./Fax: (55 41) 3266-6823 - Curitiba - PR - Brazil
E-mail: sbz@sbzoologia.org.br

Acompanhe os números deste periódico no seu leitor de RSS

Versão para download de PDF

PDF

Inglês

Versões e tradução automática

Versão original do texto

English

Tradução automática

Google Translator
Microsoft Translator

Como citar

RIS

BIBTEX

Outros formatos de citação e exportação:

SciELO - Scientific Electronic Library Online
Rua Dr. Diogo de Faria, 1087 – 9º andar – Vila Clementino 04037-003 São Paulo/SP - Brasil
E-mail: scielo@scielo.org

Leia a Declaração de Acesso Aberto

Métricas

<i>Anomocephalobus</i>, a new genus of minute marsh-loving beetles from mid-Cretaceous Burmese amber (Coleoptera: Limnichidae)

PlumX

Mensagem

[1] Corresponding author: Chen-Yang Cai (cycai@nigpas.ac.cn)