Muskovits József - György Zoltán - Ábrahám Levente (szerk.): Magyarország hangyadarazsai - Natura Somogyiensis 18. (Kaposvár, 2011)
Identification keys
100 NATURA SOMOGYIENSIS 5 (6) Process of metasomal segment 1 bending strongly backward (Fig. 39). Mandibles widening toward apex (Fig. 89). Mesosoma barely broadening posteriorly, sides nearly parallel-sided. Posterior half of metasomal tergites 4 and 5 with pale pubescence thing, indistinct. Anterior margin of clypeus more or less straight. Mandibles tridentate, strongly, with weak protrusion on inner side. Tubercle behind base of antennae not conspicuously high, with low carina between tubercle and eye. Mesosoma angular, much longer than broad. Head of most specimens collected in Hungary usually completely black, occasionally dark brown, tubercles behind base of antennae reddish brown. Mesosoma, clypeus and legs rusty brown, femora darker. Metasoma black, but occasionally metasomal segment 1 reddish brown. Head with dense shorter paler pubescence and longer erect darker setae. Frons, surface in front of mandibles and legs with pale setae, metasoma covered by dense appressed black pubescence and paler erect setae. Band of pubescence on tergite 2 produced triangularly forward in middle; pale pubescence covering entire surface on tergite 3. Length measurements falling in two categories: smaller (3-5 mm) and larger (6-9 mm). INVREA (1958) named the smaller variation as "Myrmilla calva forma perparvula". (Of course, this name is no longer valid.) The reason for this conspicuous size variation is probably the different size of hosts (Fig. 153). 3-9 mm. Palaearctic species, it occurs in Hungary nearly everywhere (with the exception of sandy regions, where it is relatively rare). This is by far the most common velvet ant species in Hungary (Fig. 5). Frequently it can be found in populated areas, even on streets. It has been observed to parasitize in the nests of the Halictus species. Of the nearly 3800 specimens collected two were found to be abnormally developed (gynandromorphic) form (Fig. 202). Known period of collection: 12. 1V-1. IX. Distribution: Albania, Austria, Bosnia-Herzegovina, Bulgaria, Croatia, Czech Republic, France, Germany, Greece, Hungary, Italy, Macedonia, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Switzerland and North Africa (Egypt, Libya, Morocco, Tunisia). Myrmilla {Myrmilla ) calva (VILLERS, 1789) 6 (5) Process of metasomal segment 1 small, projecting forward, barely visible (Fig. 40). Mandibles not widening toward apex (Fig. 92). Mesosoma strongly broadening posteriorly. Posterior half of metasomal tergites 4 and 5 with pale pubescence as dense as on tergites 2 and 3. Clypeus flat with transverse depression in front, two small tubercles on margin of depression situating nearer to base of mandibles than to each other. Mandibles tridentate, with apex black, and with obtuse basal protrusion. Tubercle behind base of antennae small, not conical. Mesosoma 1.4-1.5x longer than wide at narrowest point. Head and metasoma black, vertex occasionally with brownish red spot. Antennae and legs pitch brown, clypeus, mandibles (except black denticles) and mesosoma rusty red. Vertex and mesosoma with sparse, brown setae; head, ventral side of metasoma and legs with sparse, pale setae; tergites 1-5 with band of dense, yellowish setae, band of pubescence on posterior part of tergite 2 produced triangularly forward in middle. Tergites 4—6 covered by pale setae (Fig. 160). 5-8 mm. Myrmilla {Pseudomutilla) glabrata (FABRICIUS, 1775)
