Thyreus

Abstract: Abstract A lateral gynandromorph of Thyreus redactulus? Cockerell is described and figured, with a particular emphasis on the genitalic sclerites. As such, the sting morphology and mechanism are described for T. ramosus (Lepeletier de Saint Fargeau) to provide a comparative framework for understanding the gynandromorph. The implications of the gynandromorph's genitalic arrangements for intersexual homologies are explored.

Abstract: Pupae of the following cleptoparasitic Apidae are described and compared with pupae of other cleptoparasitic members in that family: Neolarra (Neolarra) californica Michener and N. (Phileremulus) vigilans (Cockerell) (Neolarrini); Holcopasites (Trichopasites) insoletus (Linsley) (Ammobatoidini); Osiris pallidus Smith? (Osirini); Mesoplia (Mesoplia) rufipes (Perty) and M. (Eumelissa) species (Ericrocidini); Isepeolus viperinus (Holmberg) (Isepeolini); and Xeromelecta (Melectomorpha) californica (Cresson) and Thyreus species? (Melectini). Pupae of the Neolarrini and Ammobatoidini have not been described before, nor has the pupa of Mesoplia although the pupa of the related Ericrocis is known. The pupa of Isepeolus was briefly described before but not illustrated. The pupa of Xeromelecta californica was illustrated earlier but not described. A preliminary generic key to known pupae of cleptoparasitic Apoidea exclusive of the Sphecidae is presented.

Abstract: i Immature stages of two species in each of the two tribes, Anthophorini and Melectini, of Anthophorinae found in Australia were studied for the first time. The larvae and pupa of Amegilla (Amegilla) pulchra (Smith), the mature larva and pupa of Amegilla (Asarapoda) sp., the mature larva of Thyreus lugubris (Smith) and the pupa of Thyreus caeruleopunctatus (Blanchard) are described and the larvae are figured, and information is given on their behaviour and development.