Diamesa lindrothi Goetghebuer in Goetghebuer & Lindroth, 1931

Montagna, Matteo, Urbanelli, Sandra & Rossaro, Bruno, 2016, The species of the genus Diamesa (Diptera, Chironomidae) known to occur in Italian Alps and Apennines, Zootaxa 4193 (2), pp. 317-331 : 322

Diamesa lindrothi Goetghebuer in Goetghebuer & Lindroth, 1931

( Fig. 2 A , B)

The examination of genitalia of many adult males suggests that in the Alps there are transition forms between this species and D. goetghebueri . The species D. lindrothi has a digitiform dorso-lateral lobe of inferior volsella ( Fig. 2 A , B), while in D. goetghebueri the lobe is larger and flat ( Fig. 2 C, D). According to Serra-Tosio (1973) this species is distributed throughout the Scandinavian Peninsula, but it is also present in the Alps. Examining larvae with barcode analysis confirms the existence of at least two separated species under this name in the Alps (Montagna et al. 2016).

Figures

FIGURE 2. A, Diamesa lindrothi Goetghebuer in Goetghebuer & Lindroth, inferior volsella with dorso-lateral and ventromedial lobes; B I, anal point, B II, male genitalia, B III, inferior volsella dorso-lateral lobe, B IV, inferior volsella ventromedial lobe; C, Diamesa goetghebueri Pagast, inferior volsella with dorso-lateral and ventro-medial lobe; D I, anal point, D II, male genitalia, D III, inferior volsella dorso-lateral lobe, D IV, inferior volsella ventro-medial lobe.