Taken 20-Jul-13
Visitors 53


2 of 25 photos
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Categories & Keywords

Category:Animals
Subcategory:Insects
Subcategory Detail:
Keywords:America, Animals, Insect, Invertibrates, North America, Occaquan Bay NWR, Organ Pipe Mud Dauber, Trypoxylon politum, U.S., U.S.A., US, USA, United States of America, Virginia, WORLD REGIONS & COUNTRIES, Wasp, Wildlife, Woodbridge
Photo Info

Dimensions2671 x 3456
Original file size8.12 MB
Image typeJPEG
Color spacesRGB
Date taken21-Jul-13 05:24
Date modified25-Jul-13 19:49
Shooting Conditions

Camera makeCanon
Camera modelCanon EOS 7D
Focal length150 mm
Max lens aperturef/2.8
Exposure1/250 at f/13
FlashFired, compulsory mode
Exposure bias0 EV
Exposure modeAuto
Exposure prog.Aperture priority
ISO speedISO 1600
Metering modePattern
Organ Pipe Mud Dauber Wasps

Organ Pipe Mud Dauber Wasps

The organ pipe mud dauber (Trypoxylon politum) is a type of wasp in the family Crabronidae. They are fairly large wasps, shiny black with pale hind tarsi. Male organ pipe mud daubers are among the few male wasps of any species to stay at the nest. A male "stands guard" (to prevent theft of prey or nest materials, as well as to ward off parasites) while a female is away collecting spiders. Mating typically occurs on her visits to the nest. They typically build their nests in sheltered locations, and large aggregations may form with dozens to hundreds of nests in a small area.