Xylochironomus meng, Liu & Tang, 2025
|
publication ID |
https://doi.org/10.3897/zookeys.1257.163285 |
|
publication LSID |
lsid:zoobank.org:pub:3476CC85-DFAF-47FE-818E-05AA26B19E54 |
|
DOI |
https://doi.org/10.5281/zenodo.17477527 |
|
persistent identifier |
https://treatment.plazi.org/id/DB099F96-B628-5384-BC8D-6A65D4969E16 |
|
treatment provided by |
|
|
scientific name |
Xylochironomus meng |
| status |
sp. nov. |
Xylochironomus meng sp. nov.
Figs 1 A View Figure 1 , 1 E View Figure 1 , 2 A, B View Figure 2
Material examined.
Holotype: M, China • Yunnan Province, Pu’er City, Ximeng Wa Autonomous County, Longtan Pool in Mengsuo Town , 22°38'N, 99°35'E, alt. 1,917 m, light traps, 27. viii. 2014, HQ Tang GoogleMaps . Paratype: • 1 M, same as holotype except 26. iv. 2022 GoogleMaps .
Diagnosis.
The new species is characterised by the gonostylus with an acute apex and high leg value (LR 1 2.2–2.4).
Etymology.
For the type locality, “ meng ” is a term used to refer to certain places in Yunnan dialect, similar to a town or county. The name is a noun in apposition.
Description.
Male imago ( N = 2).
Total length 2.8–3.3 mm. Wing length 1.6–1.7 mm. Total length / Wing length 1.71–1.97.
Head. Antennal terminal flagellomere 460–490 μm long, AR 0.72–0.80; apex with 2–3 long terminal setae, 85–110 μm long. Frontal tubercle ca. 2–3 μm long. Temporals with 4–6 verticals. Clypeus with 15–21 setae. Palpomeres 1–5 (in μm): 25–30; 50–55; 110–130; 110–125; 200–240 in length.
Thorax. Acrostichals 10–12; dorsocentrals 8–10; prealars 3–4; scutellars 8–10.
Wing. VR 1.16–1.21. R with 45–55 setae; R 1 with more than 50 setae; R 4 + 5 with more than 150 setae. Square 2–3 setae.
Legs. Scale of fore tibia round, 25–35 μm long, spurs of mid tibia and hind tibia 35–55 μm and 50–65 μm long, respectively. Lengths and proportions of legs as Table 1 View Table 1 .
Hypopygium (Figs 1 E View Figure 1 , 2 B View Figure 2 ). Tergite IX with 5–8 median setae, arranged in one or two rows. Anal point parallel, 45–48 μm long, not reaching the apex of inferior volsella. Gonocoxite 150–165 μm long, superior volsella 40–50 μm long, with two basal inner setae and one additional (‘ outer’) seta, arising from the basal margin of superior volsella, 75–80 μm long, extending near the apex of inferior volsella. Gonostylus 120–125 μm long, with acute apex. HR 1.28–1.38.
Remarks.
The new species somewhat resembles the Okinawa species Polypedilum ( Pentapedilum) acristylum Yamamoto, Hirowatari & Yamamoto, 2012 ( Yamamoto et al. 2012). Both have an acute apex to the gonostylus, and the location of the outer seta of the superior volsella is more basal. However, in P. acristylum , the outer seta of the superior volsella is relatively short, not extending beyond the apex of the superior volsella, the squama has 9 setae, and the ratio of ta 4 / ta 5 in the middle leg is 1.5, and thus P. acristylum is not a member of Xylochironomus , but an atypical species of Polypedilum ( Pentapedilum) .
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
|
Kingdom |
|
|
Phylum |
|
|
Class |
|
|
Order |
|
|
Family |
|
|
Genus |