A new cockroach (Blattodea, Corydiidae) with pectinate antennae from mid-Cretaceous Burmese amber

Guanyu Chen; Lifang Xiao; Junhui Liang; Chungkun Shih; Dong Ren

doi:10.3897/zookeys.1060.67216

A new cockroach (Blattodea, Corydiidae) with pectinate antennae from mid-Cretaceous Burmese amber

Zookeys. 2021 Sep 24:1060:155-169. doi: 10.3897/zookeys.1060.67216. eCollection 2021.

Authors

Guanyu Chen¹, Lifang Xiao¹, Junhui Liang², Chungkun Shih^{1

3}, Dong Ren¹

Affiliations

¹ College of Life Sciences and Academy for Multidisciplinary Studies, Capital Normal University, 105 Xisanhuanbeilu, Haidian District, Beijing 100048, China Capital Normal University Beijing China.
² Tianjin Natural History Museum, 31 Youyi Road, Hexi District, Tianjin, 300203, China Tianjin Natural History Museum Tianjin China.
³ Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, DC, 20013-7012, USA National Museum of Natural History, Smithsonian Institution Washington United States of America.

Abstract

A new species of fossil cockroach, Fragosublattapectinata gen. et sp. nov., is described from mid-Cretaceous Burmese amber. The new species is assigned to the family Corydiidae based on the following combination of characters: pronotum with tubercles, tegmina obovate with smallish anal region and spinules on the antero-ventral margin of the front femur (type C1). The new species is the second reported cockroach with ramified antennae. This finding broadens the diversity of Blattodea in mid-Cretaceous Burmese amber and provides further evidence of convergent evolution for antennal structures among different insect lineages.

Keywords: Convergent evolution; Myanmar; new genus; new species; pectinate antenna; sexual dimorphism; systematic palaeoentomology.

Guanyu Chen, Lifang Xiao, Junhui Liang, Chungkun Shih, Dong Ren.