Arachnids of North Carolina
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View Neobisiidae Members: NC Records

Microbisium parvulum - No Common Name

Microbisium parvulum
Taxonomy
Order: PSEUDOSCORPIONESFamily: Neobisiidae                                                                                 
Comments: Synonyms: Obisium parvulum, Microbisium confusum. 12 species in the genus worldwide, 2 in the US, both occur in NC
Identification
Online Description/Photos: BugGuide Google, iNaturalist, Wikipedia, GBIFTechnical Description: Nelson, S.O., J., 1982. The external morphology and life history of the pseudoscorpion Microbisium confusum Hoff. Journal of Arachnology, 10, p.261-274. Nelson, S.O., J., 1984. The genus Microbisium in North and Central America (Pseudoscorpionida, Neobisiidae). Journal of Arachnology, 12, p.341-350. Buddle, C., 2010, Photographic key to the pseudoscorpions of Canada and the adjacent USA, Canadian Journal of Arthropod Identification, No. 10.
Comments: ID the family by each leg with six segments, dentate inner margin on moveable finger of chelicera, and pleural membranes granular. ID the genus by spinneret on moveable finger of chelicera is a rounded knob, four eyes, palpal chela with 3 trichobothria on moveable finger and 7 on fixed finger (Novobisium has 4 and 8, respectively). M. parvulum is smaller than M. brunneum, with differences in spacing of trichobothria.
Total Length: Body length 1.5 - 2 mm
Distribution in North Carolina
Comments: Widespread throughout North America
County Map: Clicking on a county returns the records for the species in that county.
Microbisium parvulum
Adult phenology:
 High Mountains (HM) ≥ 4,000 ft.
 Low Mountains (LM) < 4,000 ft.
 Piedmont (Pd)
 Coastal Plain (CP)

Click on graph to enlarge
Habitats and Life History
Habitats: Leaf litter, very diverse habitats, from dry open fields to swamps and floodplains.
Observation Methods:
Abundance/Frequency: A study in upstate New York found Microbisium parvulum in the leaf litter year round, even under snow, at densities ranging from 25 to more than 300 individuals per square meter.
Status in North Carolina
Natural Heritage Program Status:
Natural Heritage Program Ranks:
State Protection:
Comments:

 Photo Gallery for Microbisium parvulum - No common name

Photos: 9

Recorded by: Carol Tingley on 2024-05-19
Brunswick Co.
Comment: 		Recorded by: Carol Tingley on 2021-06-06
Durham Co.
Comment:
Recorded by: Carol Tingley on 2020-03-06
Carteret Co.
Comment: 		Recorded by: Carol Tingley on 2020-03-06
Carteret Co.
Comment:
Recorded by: Carol Tingley on 2017-11-16
Robeson Co.
Comment: 		Recorded by: Carol Tingley on 2017-04-01
Chatham Co.
Comment:
Recorded by: Carol Tingley on 2016-11-20
Washington Co.
Comment: 		Recorded by: Carol Tingley on 2016-10-16
Orange Co.
Comment: Leaf litter
Recorded by: Carol Tingley on 2016-10-16
Orange Co.
Comment: Leaf litter