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Issue: Vol. 5875 No. 4: 7 Sept. 2026
Type: Article
Published: 2026-09-07
DOI: 10.11646/zootaxa.5875.4.3
Page range: 349-364
Abstract views: 347
PDF downloaded: 220

Cantobrillia risa gen. nov. et sp. nov. of the Brillia-group (Diptera: Chironomidae: Orthocladiinae) from Oriental China

School of Biological Sciences; The University of Hong Kong; Hong Kong SAR; China
School of Biological Sciences; The University of Hong Kong; Hong Kong SAR; China
Life Science and Technology College; Jinan University; Guangzhou 510632; China
Evolution & Ecology; Australian National University; Canberra; ACT 0200; Australia
School of Biological Sciences; The University of Hong Kong; Hong Kong SAR; China
Diptera Brillia-group Oriental region integrative taxonomy southern African sister-group

Abstract

Cantobrillia Tang & Chan gen. nov. for Cantobrillia risa Chan & Han sp. nov. (Chironomidae: Orthocladiinae) are described from Hong Kong and Guangdong, China. Morphological descriptions and illustrations of the adult male, pupa and larva stages are provided, along with DNA barcodes (CO1-5P). A phylogenetic position for Cantobrillia within the Brillia-group is proposed using five combined genetic markers (18S, 28S, CAD1, CAD4 and CO1-3P) analysed with mixed-model Bayesian inference and maximum likelihood methods. Morphological and molecular evidence (BS = 100; PP = 1) strongly supports Cantobrillia gen. nov. as sister group to the southern African Elpiscladius Harrison & Cranston. It is a second genus within the Brillia-group in having a true anal point, joining Austrobrillia Freeman.

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How to Cite

Chan, T.-Y., Han, W., Tang, H.-Q., Cranston, P.S. & Seymour, M. (2026) Cantobrillia risa gen. nov. et sp. nov. of the Brillia-group (Diptera: Chironomidae: Orthocladiinae) from Oriental China. Zootaxa, 5875 (4), 349–364. https://doi.org/10.11646/zootaxa.5875.4.3