Our Work

Figure 5 External morphology of Pteraeolidia semperi species complex, Clade A. A. MIMB 49667; B. MIMB 49671; C. MIMB 49659; D. MIMB 49680.

Figure 4 TCS haplotype network of the Pteraeolidia semperi species complex and P. ianthina based on COI sequences, constructed in PopART. Colours indicate the geographic origin of each haplotype, as s…

Figure 4 TCS haplotype network of the Pteraeolidia semperi species complex and P. ianthina based on COI sequences, constructed in PopART. Colours indicate the geographic origin of each haplotype, as shown in the legend. Circle size is proportional to the number of sequences sharing the same haplotype. Hatch marks on the connecting lines indicate the number of mutational steps between haplotypes or haplogroups. Sequences obtained in the present study are shown in bold. The dashed line separates Clade A from Clade B.

Figure 3 Maximum-likelihood phylogenetic tree of the Pteraeolidia semperi species complex and P. ianthina based on COI sequences, with specimens grouped into molecular operational taxonomic units (MOT…

Figure 3 Maximum-likelihood phylogenetic tree of the Pteraeolidia semperi species complex and P. ianthina based on COI sequences, with specimens grouped into molecular operational taxonomic units (MOTUs) to provide a more concise representation. Coloured circles denote the sampling localities represented within each MOTU, as indicated in the legend. Numbers in parentheses after each MOTU name indicate the number of specimens included in that MOTU. Values above branches represent Bayesian posterior probabilities, whereas values below branches indicate bootstrap support values from the maximum-likelihood analysis. The five taxa at the base of the tree were used as outgroups.

Figure 2 Histogram of genetic distances generated using the ASAP algorithm (Puillandre et al. 2021). The x-axis shows the pairwise genetic distance between two sequences (computed under the JC69 model…

Figure 2 Histogram of genetic distances generated using the ASAP algorithm (Puillandre et al. 2021). The x-axis shows the pairwise genetic distance between two sequences (computed under the JC69 model), and the y-axis shows the frequency, i.e., the number of sequence pairs falling within each distance interval. The barcode gap is the trough separating the cluster of smaller (putatively intraspecific) distances from that of larger (putatively interspecific) distances; in this dataset several such gaps are present (see text), which underlies the ambiguity in the number of delimited MOTUs.

Figure 1 Map of the Indo-West Pacific representing collection sites of Pteraeolidia specimens studied herein and the localities of GenBank records, shown in different colours. The type locality of eac…

Figure 1 Map of the Indo-West Pacific representing collection sites of Pteraeolidia specimens studied herein and the localities of GenBank records, shown in different colours. The type locality of each species is also indicated, based on the original species descriptions (no genetic data are available from the type localities).

Figure 9 Distribution and habitat of Gobio soldatovi. A. Geographic distribution of G. soldatovi; B. The Liuhe River, a tributary of the Luanhe River drainage, habitat of G. soldatovi, photographed in…

Figure 9 Distribution and habitat of Gobio soldatovi. A. Geographic distribution of G. soldatovi; B. The Liuhe River, a tributary of the Luanhe River drainage, habitat of G. soldatovi, photographed in Pinganpu Township, Xinglong County, Chengde City, Hebei Province.

Figure 8 General view of Gobio soldatovi. A. Living individual, uncatalogued, Songfengshan Township, Acheng County, Harbin City, Heilongjiang Province, from the Toudaohe River; B. ASIZB 248243, 102.7 …

Figure 8 General view of Gobio soldatovi. A. Living individual, uncatalogued, Songfengshan Township, Acheng County, Harbin City, Heilongjiang Province, from the Toudaohe River; B. ASIZB 248243, 102.7 mm SL.

Figure 7 Distribution and habitat of Gobio coriparoides. A. Geographic distribution of G. coriparoides; B. The Fenhe River, a tributary of the Yellow River drainage, habitat of G. coriparoides, photog…

Figure 7 Distribution and habitat of Gobio coriparoides. A. Geographic distribution of G. coriparoides; B. The Fenhe River, a tributary of the Yellow River drainage, habitat of G. coriparoides, photographed in Duanjiazhai Township, Jingle County, Xinzhou City, Shanxi Province.

Figure 6 General view of Gobio coriparoides. A. Living individual, uncatalogued, Duanjiazhai Township, Jingle County, Xinzhou City, Shanxi Province, from the Fenhe River; B. ASIZB 242041, 68.3 mm SL (…

Figure 6 General view of Gobio coriparoides. A. Living individual, uncatalogued, Duanjiazhai Township, Jingle County, Xinzhou City, Shanxi Province, from the Fenhe River; B. ASIZB 242041, 68.3 mm SL (Fang et al. 2025).

Figure 5 Distribution and habitat of Gobio guentheri. A. Geographic distribution of G. guentheri; B. The Yellow River, habitat of G. guentheri, photographed in Liulin County, Lvliang City, Shanxi Prov…

Figure 5 Distribution and habitat of Gobio guentheri. A. Geographic distribution of G. guentheri; B. The Yellow River, habitat of G. guentheri, photographed in Liulin County, Lvliang City, Shanxi Province.