Dineura parcivalvis (KONOW, 1901)

Liston, Andrew D., 2015, New records and host plants of Symphyta (Hymenoptera) for Germany, Berlin and Brandenburg, Beiträge Zur Entomologie = Contributions to Entomology 65 (2), pp. 383-391: 385

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http://doi.org/ 10.21248/contrib.entomol.65.2.383-391

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Dineura parcivalvis (KONOW, 1901)


* Dineura parcivalvis (KONOW, 1901)  

Brandenburg: 2 ♀, Landkreis Märkisch-Oderland, Waldsieversdorf , 52.548°N 14.065°E, 19/ 25.05.2006, swept from Prunus padus   GoogleMaps   .

First record from Germany.

These specimens were identified by LISTON (2006b) as D. testaceipes (KLUG)   . MUCHE (1968) also recorded D. testaceipes   from Brandenburg. Although it is highly probable that D. testaceipes   does occur here, no voucher specimens have so far been examined. Accordingly, D. testaceipes   is deleted from the faunal list of Berlin- Brandenburg. D. parcivalvis   und D. testaceipes   are morphologically very similar, although LINDQVIST (1955, 1972) noted conspicuous differences in the structure of the male penis valves. I had no males of D. parcivalvis   available for examination. The most reliable single external character for distinguishing females seems to be the length of the antenna and proportions of the flagellomeres, at least in European specimens. However, two females in the SDEI from the Russian Far East, with characters that otherwise fit D. testaceipes   , have more slender flagellomeres, like D. parcivalvis   . The body colour of D. parcivalvis   females is always relatively pale, with the abdomen underside extensively pale (yellow). The coloration of D. testaceipes   varies much more than in D. parcivalvis   , but most specimens of the former are darker than the latter. Most D. testaceipes   imagines from northern Europe can be identified using only colour characters: the underside of the abdomen is usually nearly entirely dark (black / dark brown). On the other hand, some Austrian individuals reared from Sorbus aucuparia   have been examined, that are just as pale as D. parcivalvis   . Other characters mentioned by LINDQVIST seem less useful. The presence or absence of vein 2r-rs in the fore wing is certainly not a good character: this varies in both species. There is indeed a slight difference in the sculpture of the upper head, particularly on the temples, The identification of the D. parcivalvis   specimens from Brandenburg is further supported by two non-morphological characters: a significant divergence in CO1 barcoding (4.4 %) from D. testaceipes   and the fact that both females were collected from Prunus padus   . KONTU- NIEMI (1960) established that Prunus padus   is the larval host of D. parcivalvis   . On the other hand, D. testaceipes   has generally been regarded as monophagous on Sorbus aucuparia   (e.g. BENSON 1958). Previously, D. parcivalvis   has been definitely recorded only from Finland, Estonia and Latvia, but possibly also occurs in Moravia, Czech Republic (see LINDQVIST 1955). Its global range reaches to the Russian Far East: 1♀, Khabarovskiy Kray, Bikin N 20 km, Boitsovo, Bolshoi Sontsepyok Hill, 47.033°N 134.350°E, 26.05.1993, leg. A. Taeger (SDEI); 1 ♀, Primorskij Kray, Partisan, 13 km S Ussuriysk, 43.691°N 131.957°E, 15.06.1993, leg. A. Taeger (SDEI).