Epeolus tarsalis Morawitz, 1874

Astafurova, Yulia V. & Proshchalykin, Maxim Yu., 2021, Review of the Epeolus tarsalis species group (Hymenoptera: Apidae, Epeolus Latreille, 1802), with description of a new species, Zootaxa 5006 (1), pp. 26-36 : 32

Epeolus tarsalis Morawitz, 1874

Figs 2, 4, 5 , 8, 10

Epeolus tarsalis Morawitz, 1874: 182–183 , ♀, ♂ (type locality: Dagestan, Russia).

Epeolus praeustus Pérez, 1884: 324–326 , ♀ (type locality: Pyrenees).

? Epeolus sibiricus Radoszkowski, 1887: 295 , ♀, ♂ (type locality: Vladivostok , Russia).

Epeolus rozenburgensis van Lith, 1949: 105–112 , ♀ (type locality: the Netherlands).

Epeolus himukanus Hirashima, 1955: 40–41 , ♂ (type locality: Kyushu , Japan).

Epeolus tarsalis ssp. tirolensis van Lith, 1956: 99 , ♀ (type locality: Tirol, Austria).

Epeolus tarsalis himukanus: Hirashima & Tadauchi 1979: 122 ; Mitai & Tadauchi 2009: 71.

Material examined. Russia: Chelyabinsk Province : 1 ♀, Kyshtym , 19.VIII.1928, leg. Burakova [ZISP]; Orenburg Province : 1 ♂, Orenburg , 18.VII.1925, leg. P. Vorontsovsky [ZISP]; Kemerovo Province : 1 ♀, Belovskiy distr., Buskuskan , 24.VIII.2007, leg. S. Luzyanin [ZISP]; Khakassia Republic : 1 ♂, Shira Lake , 24.VII.1897, leg. Yu. Vagner [ZISP] ; 2 ♂, Sosnovoe Lake , N53°26´13´´ E 90°90´11´´, 2.VIII.2018, leg. S. Luzyanin, D. Sidorov [ZISP]; Tyva Republic : 1 ♂, 11 km W of Ust-Elegest , N51,5526° E93,9894°, 27.VII.2018, leg. S. Luzyanin, D. Sidorov [ZISP] ; 2 ♂, 5 km E of Khandagayta , N50,7381° E 92,1479°, 30.VII.2018, leg. S. Luzyanin, D. Sidorov [ZISP]; Krasnoyarsk Territory : 1 ♂, Krasnoyarsk , coll. F. Morawitz [ZISP]; Irkutsk Province: 1 ♂, Baikal Lake, Olkhon Isl. , 12.VIII.1927, leg. Soldatov [ZISP] ; 5 ♀, 3 ♂, 15 km E of Ust-Ordynsky , 3, 6.VIII.1994, leg. AL [FSCV]; Buryatia Republic : 3 ♂, Dureny, Chikoi River , 5.VIII.1924, leg. PM [ZISP] ; 1 ♀, 2 ♂, Naushki, Selenga River , 30.VII.2007, leg. AL, MP, VL [FSCV] ; 1 ♂, Gusinoe Lake, Baraty , 25.VIII.2007, leg. AL, MP [FSCV] ; 1 ♂, Ivolginsky distr. , N51°44´E107°20´, 31.VII.2017, leg. S. Rudykh [FSCV]; Zabaikalsky Territory : 1 ♀, Zun- Torey Lake , 15.VIII.1996, leg. VD [ISEN] ; 1 ♀, Nizhny Tsasuchei, Onon River , 18.VIII.1996, leg. VD [ISEN]; Amur Province : 2 ♀, Ignat’evka , E of Blagoveshchensk, 4.IX.1928, leg. Formozov [ZISP] ; 2 ♀, 40 km SW of Svobodny , 27–29.VII.2003, leg. SB [ZISP]; Khabarovsk Territory : 1 ♀, Machtovy, Machtovaya River , 6.VIII.2005, leg. AL [FSCV]; Jewish Autonomous Province : 2 ♀, 1 ♂, Bastak Nature Reserve, Zabelovskoe Lake , 3–4.IX.2005, leg. V. Kuznetzov [ZISP]; Primorsky Territory : 1 ♂, Lazovsky Nature Reserve, Ta-Chingouz Bay , 27–28.VI.1981, leg. Yu. Pesenko [ZISP] ; 1 ♀, 2 ♂, Khasan, Golubiny Utes , 25–27.VIII.1988, leg. SB [ZISP] ; 1 ♀, 15 km SW of Slavyanka , 1–2.X.1995, leg. SB [ZISP] ; 1 ♀, 1 ♂, 20 km of SW Krounovka , 5.VII.1998, leg. SB [ZISP] ; 1 ♂, 25 km SW of Slavyanka , 8.VIII.1998, leg. SB [ZISP] ; 1 ♂, 20 km SW of Slavyanka , 18.VIII.1998, leg. SB ; 2 ♀, 1 ♂, Anisimovka , 26, 31.VIII.2003, leg. AL, MP [FSCV] ; 2 ♀, Novokachalinsk , 13–16.VIII.2003, leg. SB [ZISP] ; 6 ♀, 1 ♂, idem, 21.VIII.2009, leg. AL, MP, VL [FSCV] ; 1 ♀, Ryazanovka , 25.IX.2008, leg. AL [FSCV] ; 2 ♀, Khasan , 26.IX.2008, leg. AL [FSCV] ; 1 ♀, 1 ♂, Khasan distr., Kosa Nazimova , 26.VIII.2010, leg. AL [FSCV] . Kazakhstan: 1 ♂, Semipalatinsk , coll. F. Morawitz [ZISP] .

Distribution. Europe, Russia (South of the European part, North Caucasus, * Chelyabinsk Prov., * Orenburg Prov., * Kemerovo Prov., * Khakassia Rep., * Tyva Rep., * Krasnoyarsk Terr., * Irkutsk Prov., Zabaikalsky Terr., Buryatia Rep., Amur Prov., Khabarovsk Prov., * Jewish Autonomous Prov., Primorsky Terr.), * Kazakhstan (East Kazakhstan Prov.), Mongolia, Korean Peninsula, Japan (Honshu, Kyushu) ( Romankova 1995; Mitai et al. 2008; Proshchalykin & Kupianskaya 2009; Levchenko et al. 2017; Bogusch & Hadrava 2018).

Variation. The female of this species exhibits a considerable intraspecific variation in punctation of vertex, ocelloocular area and hind femora, degree of development of tergal tomentum spots, and coloration of mesoscutellum and axillae ( Pittoni 1947; van Lith 1956). In our materials from Siberia and Russian Far East, females exhibit almost no variation in coloration, most of species have entirely red mandibles, labrum, tegulae, axilla and mesoscutellum, pronotal lobe and legs (except of dark spurs and partially brownish coxae) ( Figs 8, 10 ), a few specimens with red apical margin of clypeus, black labrum, axilla and partially black pronotal lobes. In terms of integument coloration, examined specimens correspond to the description of female of Epeolus tarsalis himukanus by Mitai & Tadauchi (2009), except in having a black hypoepimeral area. Lateral fascia on T2 is complete (not reduced on to lateral spots), but the paired lateral spots on T3 vary in size or rarely are reduced to one spot (Fig, 10). The punctation of the ocello-ocular area slightly varies from entirely confluent to with interspaces ca a half puncture diameter. The punctation of hind femora on anterior surface varies from mostly confluent ( Fig. 4 ) to punctures separated by 1–2 puncture diameters ( Fig. 5 ). In the males lateral fasciae of T3 and T4 are often narrow medially ( Fig. 6 ) and sometimes reduced to paired spots ( Fig. 7 ).

Figures

FIGURES 1–7. Epeolus melectiformis Yasumatsu, female (1), E. tarsalis Morawitz, female (2, 4, 5); male (6, 7), E. coreanus Yasumatsu, male (3): 1–3—supraclypeal area, frontal, view, 4, 5—hind femora, lateral view; 6, 7—metasoma, dorso-lateral view. Scale bars: 0.3 mm (1–3); 0.5 mm (4–7).

FIGURES 8–11. Epeolus tarsalis Morawitz, female (8—from Jewish Autonomous Prov.; 10—from Irkutsk Prov.), E. melectiformis Yasumatsu (9, 11—both from Primorsky Terr.), lateral view. Scale bars: 1.0 mm.