Metriocnemus (Metriocnemus) beringensis (Cranston & Oliver)

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 : 75-76

Metriocnemus (Metriocnemus) beringensis (Cranston & Oliver)

Apometriocnemus beringensis Cranston & Oliver, 1988: 428

Metriocnemus beringensis (Cranston & Oliver); Sæther (1995: 59)

Material examined.

CHINA: Tibet, Zhangmu, 28°46'26"N, 87°30'22"E, 1 male, 15.viii.1987, light trap, C. Deng. Tibet, Zhangmu, 28°46'26"N, 87°30'22"E, 1 male, 6.ix.1987, light trap, C. Deng.

Remarks.

Metriocnemus (Metriocnemus) beringiensis may be no more than a small form of Metriocnemus (Metriocnemus) fuscipes (Meigen, 1818) differing in having a strongly reduced or absent anal point and slightly fewer setae on squama. Chinese specimens have fewer setae (R with 18-28, R1 with 18-20, R4+5 with 15-38 setae) on the wing than Norwegian specimens (R with 39-69, 55, R1 with 27-47, 36, R4+5 with 37-81, 59 setae) ( Sæther 1995).

Distribution.

The species is previously recorded from the Nearctic and Palaearctic regions ( Ashe and O’Connor 2012). In China it was collected in Tibet in Oriental China for first time.