New resin bee species in the genus Mielkeanthidium Urban (Hymenoptera, Megachilinae) Author Parizotto, Daniele R. Author Urban, Danúncia text Zootaxa 2011 3139 55 62 journal article 45730 10.5281/zenodo.207366 ba2ef412-9186-4dae-9820-b26701639225 1175-5326 207366 Key to Mielkeanthidium species Note. Males of M. ornatum and females of M. albertinoi sp. nov. and M. tucumanum sp. nov. , are unknown. 1 Males ............................................................................................... 2 - Females............................................................................................ 6 2 Sixth tergum with straight distal margin, without a median projection; distal tergum with truncate lateral lobes, lobe bases as wide as apices, space between lobes narrower or same as lobes width ( Fig. 27 ); apex of third sternum with a median emargination on distal margin and without long curved hairs ( Fig. 30 ).................................................. 3 - Sixth tergum with an apical projection at middle; distal tergum with acute lateral lobes, lobes wider basally than distally, space between lobes about twice as wide as lobe width ( Fig. 28, 29 ); apex of third sternum without a median emargination and with long curved hairs ( Fig. 31 )............................................................................. 4 3 Clypeus yellow in the first apical 2/3 (Fig. 5); scutellum black; basal tergum and third to fifth terga with a complete yellow band; sixth tergum black; distal tergum darkish brown with two lateral maculae; third to fifth sterna darkish brown.................................................................................................... M. nigripes - Clypeus totally yellow (Fig. 7); scutellum with apical yellow band; basal tergum with yellow lateral bands only; third to fifth terga with discal yellow band only; sixth tergum with distal yellow band; distal tergum almost entirely yellow; third to fifth sterna almost entirely yellow................................................................... M. rubripes 4 Vertex with coarse, darkish brown hairs; pronotal lobe black; axillae and scutellum without yellow maculae, or with weak yellow maculae (Fig. 11); basal half of second tergum densely punctate, punctures separated by almost half of a puncture diameter ( Fig. 25 )............................................................................. M dissimile sp. nov. - Vertex with fine and amber hairs; pronotal lobe with a yellow macula; axillae and scutellum with wide yellow band (Figs. 10, 12); punctures of basal half of second tergum sparse, punctures separated by a puncture diameter or more ( Figs. 24, 26 ).... 5 5 Third to sixth terga densely punctate, punctures separated by less than a half of a puncture diameter; sixth and seventh terga almost totally yellow; sixth tergum with median projection short, truncate ( Fig. 28 ); third sternum light brown............................................................................................... M. albertinoi sp. nov. - Third to sixth terga with large punctures, punctures separated by more than half than punctures diameter; sixth and seventh terga with a large yellow band, wider medially on sixth; sixth tergum with median projection elongated, acute; third sternum yellow ( Fig. 29 )..................................................................... M. tucumanum sp. nov. 6 Mandible with four-toothed; propodeum base with well-developed row of pits across its upper margin.. M. dissimile sp. nov. - Mandible with three-toothed; propodeum base with a row of pits larger laterally and narrowed medially................. 7 7 Paraocular area with large yellow maculae almost reaching median ocellus (Fig. 9); postocellar band reaching the first third of gena and narrower at middle (Fig. 20); distal tergum with a large yellow maculae (Fig. 16).................. M. ornatum - Paraocular area with a little yellow spot at sides of antennal sockets (Figs. 6, 8); postocellar area with two small yellow lines behind eyes (Figs. 17, 18); distal tergum black (Fig. 14)....................................................... 8 8 Second and third terga with finer punctures on disc than in the remaining surface; third to fifth terga with compete yellow band, emarginated at middle (Fig. 13); scutellum black (Fig. 17); legs dark brown, without ferruginous areas.... M. nigripes - Second and third terga uniformly punctate; third to fifth terga with discal yellow band only (Fig. 14); scutellum with distal yellow band (Fig. 18); fore and mid tibiae and basitarsus with ferruginous areas............................. M. rubripes