Heterogenella bigibbata Mamaev & Berest, 1991,

Jaschhof, Mathias & Jaschhof, Catrin, 2015, New species and new distribution records of Lestremiinae, Micromyinae and Porricondylinae (Diptera: Cecidomyiidae) in Sweden, Zootaxa 3973 (1), pp. 159-174: 171

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Heterogenella bigibbata Mamaev & Berest, 1991


Heterogenella bigibbata Mamaev & Berest, 1991 

Fig. 8View FIGURE 8 A

This species, previously known only from the type locality in Ukraine ( Mamaev & Berest 1991), is here reported from two sites in south and central Sweden. Swedish specimens of H. bigibbata  are in line with the redescription of this species by Jaschhof (1998) as well as with an unpublished drawing of the genitalia of the male holotype, which the senior author made in 2007. Heterogenella biggibata  is distinguished from the congeneric species by short, almost circular gonostyli (↓); the ninth tergite lacking a T-shaped sclerotization (as is present in H. linearis Yukawa  ); and the ventral emargination of gonocoxae bordered by small, densely setulose swellings (↓).

Material. 3 males (CEC 33–35), Sweden, Skåne, Simrishamn, Stenshuvud National Park, 16 June – 31 July 2009, M. & C. Jaschhof; 9 males (CEC 24–32), Uppland, Uppsala, Fiby Nature Reserve, 23 June – 28 July 2009, 9 June – 23 July 2010, M. & C. Jaschhof.