The genus Centris contains circa 250 species of large apid bees occurring in the Neotropical and Nearctic regions, from Kansas to Argentina. Most females of these bees possess adaptations for carrying floral oils rather than (or in addition to) pollen or nectar. They visit mainly plants of the family Malpighiaceae to collect oil, but also Plantaginaceae, Calceolariaceae, Krameriaceae and others. Recent studies have shown they are sister to the corbiculate bees, the most well-known and economically important group of bees 
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A C. pallida female will find a spot for her nest. She will then dig diagonally down about 12 inches (30 cm). At the end of this tunnel, she will dig an 1 inch (2.5 cm) long vertical chamber where the egg will be laid. The chamber will be about 8 inches (20 cm) below the surface. In this chamber, the female will form a brood pot lined with wax. The brood pot will contain nectar and pollen similar to the bee bread in other bees; however, unlike other bees, the bee bread is the consistency of molasses instead of being solid. The egg is laid on top of the bee bread and sealed in with wax, and the tunnel is partially filled with dirt to protect the egg. A female can create several of the burrows during her lifetime.
Details: *By default, the Macintosh Centris 610 only supports a single display, but a second one can be supported with the addition of a compatible PDS or NuBus video card. With the standard VRAM, the system is capable of supporting 512x384 at 16-bit color and 640x480, 800x600 and 832x624 at 8-bit color. With 1 MB of VRAM installed, it can support 640x480, 800x600 and 832x624 at 16-bit color and 832x624, 1024x768 and 1152x870 at 8-bit color.
This bee is black and densely covered in a grey pubescence or fur on the dorsal side. The thorax fur has a slightly yellow color. The legs have a mixture of black and reddish fur. The ventral side of the bee is covered in a brownish or dark yellow fur. The wings are fairly transparent except for the black veins that run through them. Males and females are similar in size at about 16–17 millimeters. Males have eyes more yellow in color, and their thorax fur is lighter. Females have eyes more green in color, and their thorax fur is more brown than grey.
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