Rheocricotopus (Psilocricotopus) chalybeatus (Edwards, 1929)

Liu, Wenbin, Lin, Xiaolong & Wang, Xinhua, 2014, A review of Rheocricotopus (Psilocricotopus) chalybeatus species group from China, with the description of three new species (Diptera, Chironomidae), ZooKeys 388, pp. 17-34 : 21-22

Rheocricotopus (Psilocricotopus) chalybeatus (Edwards, 1929)

Spaniotoma chalybeatus Edwards, 1929: 331.

Eukiefferiella urbanus Goetghebuer, 1932: 101.

Trichocladius lerutbi Goetghebuer, 1939: 2.

Rheocricotopus chalybeatus Lehmann, 1969: 354; Hirvenoja 1973: 340; Langton 1984: 98.

Rheocricotopus (Psilocricotopus) chalybeatus Sæther, 1985: 82; Wang 2000: 639, Ashe and O’Connor 2012: 561.

Specimens examined.

2♂♂, Liaoning Province, Dandong City, Fengcheng City, Cao River, 40°62'50"N, 124°06'96"E, 1.iv.1993, sweeping, Wang JC; 4♂♂, Gansu Province, Longnan City, Gankang County, 33°33'10"N, 105°90'31"E, 2.viii.1982, sweeping, Bu WJ; 1♂, Shandong Province, Zaozhuang City, Shanting District, Beizhuang Town, 34°99'20"N, 102°52'32"E, 28.v.1994, sweeping, Wang XH; 1♂, Shandong Province, Yantai City, Muping District, 37°38'62"N, 121°59'57"E, 28.viii.1988, sweeping, Li HY; 1♂, Shaanxi Province, Baoji City, Feng County, Tsinling Moun tains, 34°23'44"N, 106°90'01"E, 27.vii.1994, sweeping, Ji BC; 3♂♂, Zhejiang Province, Wenzhou City, Yueqing City, Furong Town, 33°64'03"N, 121°02'73"E, 2.viii.2010, light trap, Lin XL.

Diagnosis.

This species can be separated from its congeners by the following combination of characters: AR 0.89-1.15; R with 2-4 setae; squama with 8-14 setae; Costa not produced or scarcely produced.

Remarks.

The additional specimens mainly agree with the description of Lehmann and other workers. But costal extension of specimens from Oriental Region (35-40 μm long) longer than from Palearctic Region (0-15 μm long).

Distribution.

China (Liaoning, Gansu, Shandong, Shaanxi and Zhejiang Provinces), Algeria, Balearic Islands, Belarus, Belgium, Corsica, Czech Republic, Denmark, Finland, France, Germany, Great Britain, Hungary, Ireland, Italy, Japan, Lebanon, Luxembourg, Mongolia, Morocco, Netherlands, Poland, Portugal, Romania, Russia, Slovakia, Spain, Switzerland, Syria, Tunisia, Turkey, Ukraine.