Metriocnemus (Metriocnemus) tristellus Edwards

Li, Xing & Wang, Xin-hua, 2014, New species and records of Metriocnemus van der Wulp s. str. from China (Diptera, Chironomidae), ZooKeys 387, pp. 73-87 : 81-82

Metriocnemus (Metriocnemus) tristellus Edwards

Metriocnemus tristellus Edwards, 1929: 312

Metriocnemus gracei Edwards, 1929: 312 sensu Wang 2000: 637.

Material examined.

CHINA: Zhejiang Province, Qingyuan City, Baishanzu County, 27°43'51"N, 100°7'33"E, 2 males, 18-22.iv.1994, light trap, H. Wu.

Remarks.

The species has an AR = 1.2, very low inferior volsella, and weak anal point. Basal half of the wing membrane is bare, costa is strongly produced, and the distance C–M is rather less than M–Cu. The palp is unusually short, palpomeres 3 and 4 are less than three times as long as broad, palpomere 2 is rather longer. Wang (2000) recorded Metriocnemus gracei Edwards, 1929 from China, which should be Metriocnemus (Metriocnemus) tristellus Edwards after we re-examined the specimen.

Distribution.

The species is recorded from the Nearctic and Palaearctic regions ( Ashe and O’Connor 2012).The species has been collected in Oriental China for first time.