Rhaphium tripartitum (Frey, 1913)

Grichanov, Igor Ya. & Khruleva, Olga A., 2020, New records of long-legged flies (Diptera, Dolichopodidae) from Wrangel Island Nature Reserve (Chukotka AD, Russia), Acta Biologica Sibirica 6, pp. 551-562 : 551

publication ID

https://dx.doi.org/10.3897/abs.6.e53065

publication LSID

lsid:zoobank.org:pub:6CB3CB88-0234-41FC-924F-D0B2321F899D

persistent identifier

https://treatment.plazi.org/id/BAC568D0-AC6B-574F-8A70-F0B65F1E70D8

treatment provided by

Acta Biologica Sibirica by Pensoft

scientific name

Rhaphium tripartitum (Frey, 1913)
status

 

Rhaphium tripartitum (Frey, 1913)

Figs 7 View Figure 7 , 8 View Figure 8 , 9 View Figure 9

Material.

♂, Upper reaches of the Neizvestnaya River, 71°13'N, 179°19'W, dry gravel southern edge of river terrace covered with forb-sedge “tundra-steppe” community (Fig. 6 View Figure 6 ), yellow pan traps, 4- 15.07.2015, O.A. Khruleva GoogleMaps .

Additional Material.

1♂, Chukotka : Krasnoarmeiskii, Chaunsky District, 10.07.1963, K. Gorodkov ( ZIN) .

Notes.

Rhaphium tripartitum was originally described ( Lundström and Frey 1913) from the North Russian locality Kambalnitsa (written later as Kambalnista) and probably was not recorded in the Palaearctic Region until recently. The only record of the species from the Nearctic Region (Northwest Territories of Canada) belonged to Vockeroth (1952). The species distribution was erroneously described in the Palaearctic Catalog ( Negrobov 1991) as "Type-locality: Kambalnista (?Finland). Distr.: Europe: North Europe; USSR: NET (Murmansk region, Leningrad region); North America". However, there were no original materials published for R. tripartitum from either Finland or Murmansk and Leningrad Regions. It was not included into the checklists of Finland ( Frey 1915; Kahanpää 2014), Leningrad ( Stackelberg 1962) and Murmansk Regions ( Grichanov 2004). In fact, the type locality of the species is a small Kambalnitsa River (68°19'N, 46°02'E) on the north-eastern coast of the Kanin Peninsula between the White Sea and the Barents Sea, belonging now to the Nenets Autonomous Okrug (formerly a part of the Arkhangelsk Region).

Recently Negrobov et al. (2012) have found R. tripartitum on the Taimyr Peninsula (Zakharova Rassokha River, 72.7°N, 101.08°E). Negrobov has identified also a male from the middle part of the Yamal Peninsula as R. tripartitum ( ZIN collection; Negrobov, pers. comm.).

Grichanov (2018) has reported the Nearctic Rhaphium nigrum (Van Duzee, 1923) from the Chaunskii District of Chukotka mainland, comparing a specimen in his hands with the original description of the species ( Van Duzee 1923). This species was described from Alaska (Katmai and Savonoski, Naknek Lake) and was never recorded again ( Pollet et al. 2004). A careful re-examination of the R. nigrum description has revealed that the two Chukchi males examined (from the Chaunsky District and the Wrangel Island) must be considered R. tripartitum . A male from the Chaunsky District (Fig. 7 View Figure 7 ) is somewhat lighter than a male from the Wrangel Island (Fig. 8 View Figure 8 ) because of its long-term storing in the museum collection (about 60 years). The hypopygium (Fig. 9 View Figure 9 ) is identical in both specimens. Nevertheless, the types of R. nigrum must be appropriately redescribed and illustrated, because the two names may be synonymous.

Distribution.

Type locality: Russia: Nenetsia, Kambalnitsa River. Palaearctic: Russia (Chukotka mainland, Wrangel Island, Nenetsia, Taimyria, Yamalia); Nearctic: Canada (Northwest Territories).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Dolichopodidae

Genus

Rhaphium