Monomorium minimum species group

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DuBios revised the North and Central American Monomorium species, placing all the species in the Monomorium minimum species group. This page is based on this study.

Species

Diagnosis

DuBois defined the subgenus Monomorium:

Queen: Antenna 12-segmented with distinct 3-segmented club (lengths of club segments increasing distally); propodeum unarmed (small bump may be present); clypeus with carinae usually extended anteriorly into teeth; masticatory border of mandible with 2-5 teeth, usually 4. Worker: As in queen; promesonotal suture reduced or absent; metanotal sulcus present as pronounced constriction. Male: Antennal scape cylindrical, never surpassing occiput.

DuBois also provided the following details about the Monomerium (Monomorium) minimum species-group:

Diagnosis: All Castes: Anepisternum and katepisternum always smooth and shining; propodeum with distinct parallel longitudinal rugae on side.

Notes

This species group as here understood includes only those species which are native to North and Central America. Further revisionary work within this genus may reveal this to be a paraphyletic group and may show that certain South American and Asiatic species are members of this group. However, it is a group of species (somewhat isolated geographically) well suited for revisionary study.

Additional Resources

References