Hylaeus (Dentigera) brevicornis Nylander, 1852

Proshchalykin, Maxim Yu. & Dathe, Holger H., 2016, Additional records of the genus Hylaeus Fabricius, 1793 (Hymenoptera: Apoidea: Colletidae) from Siberia, with description of a new species, Zootaxa 4105 (4), pp. 301-320 : 302-304

Hylaeus (Dentigera) brevicornis Nylander, 1852

Hylaeus brevicornis Nylander, 1852: 95 , ♀, ♂ (lectotype: ♀, designated by Erlandsson 1981: 177, Sweden: Bohusia, NHRM). Prosopis pygmaea Schenck, 1853: 214 –215, ♀, ♂ (type locality: Germany, Nassau).

Prosopis rubicola Smith, 1869 (nom. praeocc., nec Saunders, 1850): 74–75, ♀, ♂ (type locality: England). Hylaeus discretus Förster, 1871: 942 –943, ♂ (type locality: Belgium, Huy/Maas).

Hylaeus atratulus Förster, 1871 (nom. praeocc., nec Schenck, 1853): 979–980, ♀ (type locality: Hungary). Hylaeus suspectus Förster, 1871: 1075 –1076, ♀ (type locality: unknown).

Prosopis minuta sensu Alfken, 1905 a (nec Apis minuta Fabricius, 1793).

Prosopis brevicornis sardoa Alfken, 1934: 23 , ♀, ♂ (type locality: Italy, Sardinia).

Hylaeus parvulus Janvier, 1972 (nom. praeocc., nec Schenck, 1853): 113, ♀, ♂ (type locality: France, Île d'Oléron).

Material examined. Kemerovo Province: 1 ♂, Krapivinskii distr., Azhendarovo, 3.VIII. 2009, SNY (KSU); Altaiskiy Territory: 1 ♂, 8 km S Biisk, Ust'-Katun', 7.VII. 2007, SAB ( ZISP); 1 ♀, 40 km SSE Zmeinogorsk, Novoaltaiskoe, 6.VIII. 2007, SAB ( ZISP); 6 ♀, 30 km S Kur’ya, Savvushka, 31.VII– 1.VIII. 2007, SAB ( ZISP); Altai Republic: 1 ♀, Chemal, 19–21.VII. 2007, SAB ( ZISP); 1 ♀, 80 km SSE Ust'-Koksa, Zaichikha River, 25–28.VII. 2013, MYP, VML ( IBSS); Krasnoyarsk Territory: 1 ♀, Magansk, 30.VI. 2012, MYP, VML ( IBSS); 1 ♀, Krasnoyarsk, Bazaikha, 2.VII. 2012, MYP, VML ( IBSS).

Distribution in Siberia. *Kemerovo Province, *Altaiskiy Territory, *Altai Republic, *Krasnoyarsk Territory.

General distribution. North Africa ( Morocco), all Europe to 64 °N; in the Alps and Pyrenees to 1900 m altitude. Previously, the eastern edge of its range was thought to lie in Iran ( Dathe 1980). The new records show that the species is considerably more widely distributed.

Remarks. The taxonomic situation within the brevicornis group remains unsatisfactory and a revision including the Asian records is needed. Profound uncertainties exist even among the European taxa ( H. brevicornis, H. gredleri Förster, H. kahri Förster, H. intermedius Förster and H. imparilis Förster), so that the examined specimens are tentatively assigned to H. brevicornis. Nevertheless, morphological characters make possible an assignment to H. brevicornis. By analogy, this applies equally to H. gredleri. In southern Siberia and in Europe, where these species are partly sympatric, these two taxa apparently form a species pair in which the putative species should be distinguished.