The Labor Day Ant

Sample information

Picture
Entry by: John C
Location
Collection date 09/28/2025
Captive / Cultivated? Wild-caught
Group Penn State University
Observations

An arthropod was observed in front of the HUB at approximately 6:30 PM. The weather conditions were cloudy, with an estimated temperature of around 75°F. The organism was found on the ground surface and was observed crawling slowly across the pavement. No interactions with other organisms were noted during the observation period.

The arthropod was discovered incidentally while walking through the area and was identified through general knowledge based on its small size, dark coloration, and typical movement pattern. The surrounding environment consisted of paved walkways and nearby grassy areas, which are consistent with the habitat of this organism.

Putative identification Arthropoda Insecta Hymenoptera Formicidae

Methods

Extraction kit DNeasy (Qiagen)
DNA extraction location Whole arthropod
Single or Duplex PCR Duplex Reaction
Gel electrophoresis system agarose gel electrophoresis
Buffer 1X TAE
DNA stain Ethidium Bromide
Gel images
Protocol notes

Care was taken to avoid cross-contamination by using clean pipette tips and changing tips between samples. Wells were loaded carefully to prevent sample overflow or mixing between lanes. Positive and negative controls were included on each gel to validate PCR and electrophoresis results. The gel was run long enough to allow clear separation of bands, and exposure to UV light was minimized to prevent DNA damage.

Results

Wolbachia presence No
Confidence level High
Explanation of confidence level

I am highly confident in the results because the positive and negative controls worked as expected. The positive control showed a clear Wolbachia-specific band, confirming that the PCR reaction and gel electrophoresis were functioning properly. The negative control showed no bands, demonstrating that there was no contamination. Since the Lasius neoniger sample showed no Wolbachia bands while the controls performed correctly, I can trust that this ant sample is indeed Wolbachia-negative

Wolbachia 16S sequence
Arthropod COI sequence
Summary The Formicidae was found to be negative for Wolbachia.
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