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| Photo Galleries |
 Colorado
Plateau |
| Fieldwork |
| Labs
& Facilities |
| Non-pinyon
Organisms |
| Pinyon
Needle Scales |
| Pinyon
Reproduction |
| Sunset
Crater |
| Stem-boring
Moths |
| Susceptible/Resistant
Trees |
Pinyon Needle Scales |
 Matsucoccus acalyptus female |
 Female crawling by a needle on her way to lay eggs at the base |
 Pre-Emergence Female Needle Scale |
 2nd Instar Emerged Female (lower left) / Pre-Emergence Female (lower right) |
 Early 2nd Instar (upper left) / Late 2nd Instar (upper right) |
 Scale infested Needle |
 Scale infested Needles |
 Scale infested Needles |