New records of NoN-bitiNg midges ( diptera : chiroNomidae , orthocladiiNae ) from mallorca , spaiN

Ten species of non-biting midges belonging to the subfamily Orthocladiinae were found in samples from predominantly madicolous habitats in Mallorca, Spain. One species, Bryophaenocladius nidorum (Edwards, 1929), has not previously been recorded from Spain, while Smittia pratorum (Goetghebuer, 1927), Bryophaenocladius inconstans (Brundin, 1947), Orthocladius (O.) maius Goetghebuer, 1942, Paracladius conversus (Walker, 1856) and Paraphaenocladius impensus (Walker, 1856) are recorded for the first time from the Balearic Islands.


Introduction
Non-biting midges (Diptera, Chironomidae) from the Mediterranean are of particular interest for taxonomists, biogeographists and ecologists due to the unique history of the region during the Paleogene and Neogene, as well as the high degree of the local endemism (Laville andReiss 1992, Moubayed-Breil et al. 2012).Considerable attention has been given to the chironomid faunas of the Mediterranean islands in connection with studies on island biogeography and the ecology of intermittent rivers (Álvarez et al. 2010(Álvarez et al. , Raposeiro et al. 2009).
However, from the Balearic Islands, the only Chironomidae studies are based on immature stages, mainly larvae and pupal exuviae (Álvarez et al. 2010, Malo andGarcia-Aviles, 1999).Here we present new records of adult Chironomidae from Mallorca.

Material and Methods
Specimens were sampled at nine locations in Mallorca (Fig. 1) in February 2015 using sweep nets and aspirators and preserved in 70-100% ethanol.All material was collected by Gunnar M. Kvifte.For subsequent identification, males were slidemounted in Euparal following the procedure in Langton and Pinder (2007).

Results
Ten species of Orthocladiinae were found.One of them -Bryophaenocladius nidorum (Edwards, 1929), have not previously been recorded from Spain, while five additional species, Orthocladius (O.) maius Goetghebuer, 1942, Paracladius conversus (Walker, 1856) and Paraphaenocladius impensus (Walker, 1856), Smittia pratorum (Goetghebuer, 1927), Bryophaenocladius inconstans (Brundin, 1947)  The species recorded here is the same as the one illustrated by Langton and Pinder (2007), which appears to be quite different from the B. scanicus sensu stricto redescribed and illustrated in Du et al. (2011).Bryophaenocladius scanicus sensu stricto is listed as occurring in Spain (Soriano et al. 1997, Ashe andO'Connor 2012), but the species must be considered as new to the fauna of the Balearic Islands.However, further studies of Bryophaenocladius sp.cf.scanicus sensu Langton and Pinder 2007 is required to clarify its status and distribution.(Brundin, 1947) Locality:
Distribution: Widespread in the Holarctic region (Ashe and O'Connor 2012, Spies and Saether 2013, Soriano et al 1997).New to the Balearic Islands.
Remarks: The male collected at Banyalbufar exhibits a curious abnormality in the development of the anal point as the apex of the anal point is bifurcate and Y-shaped (Fig. 2).We have not found similar examples in the literature, but a wide variety of other developmental abnormalities resulting from parasites or gene or chromosomal mutations have been thoroughly documented (see Rempel 1940;Martin and Lee 2000).

Concluding remarks
The present study is based on a small sample of chironomids collected as by-catch in a study targeted at moth flies (Diptera, Psychodidae) and emphasis was thus on madicolous habitats (Kvifte et al. 2016).Chironomidae from such habitats have received a lot less attention than those of larger aquatic habitats such as lakes and rivers (Przhibroro and Baranov, 2014).The records of six new species records for the Balearic Islands from such a small sample highlights that madicolous habitats in the Mediterranean accommodate a large and still comparatively poorly understood diversity of Chironomidae.

Figure 2 .
Figure 2. Hypopygium of Smittia pratorum (Goetghebuer, 1927) male with abnormal anal point.Black arrow pointing to the bifurcation in anal point.