different between maleless vs muleless

English

male +? -less

maleless (not comparable)

Devoid of males.
- 2004, Geoffrey A. Hammerson, Connecticut wildlife: biodiversity, natural history, and conservation
  The small woolly females of this maleless species give rise to more females that feed by inserting their tubular mouthparts into the bark.

mule +? -less

muleless (not comparable)

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