Apianthidium

Taxonomy

Family: Megachilidae
Subfamily: Megachilinae
Tribe: Anthidiini
Genus: Apianthidium Pasteels, 1969
Subgenera: none
Common name: none

Overview

Apianthidium range in body length from 12–13 mm and have mostly yellow to yellow-reddish head and thorax. Their tergaterga:
the segments on the top side of the abdomen, often abbreviated when referring to a specific segment to T1, T2, T3, T4, T5, T6, or T7
are mostly yellow at the base with the posterior half of each tergumtergum:
the segments on the top side of the abdomen, often abbreviated when referring to a specific segment to T1, T2, T3, T4, T5, T6, or T7
black (Michener 2007Michener 2007:
Michener, C.D. 2007. The Bees of the World (2nd ed.). Johns Hopkins University Press, Baltimore and London, 953 pp.).

Diversity

Apianthidium contains one species, A. apiforme (Michener 2007Michener 2007:
Michener, C.D. 2007. The Bees of the World (2nd ed.). Johns Hopkins University Press, Baltimore and London, 953 pp.); none are known to occur in the U.S. or Canada.

Diagnostic characteristics

(modified from Michener 2007Michener 2007:
Michener, C.D. 2007. The Bees of the World (2nd ed.). Johns Hopkins University Press, Baltimore and London, 953 pp. unless otherwise stated)

• Arolia absent.
• Hind tibial spurs with apices strongly hooked.
• Juxtantennal carinacarina:
  a clearly defined ridge or keel, not necessarily high or acute; usually appears on bees as simply a raised line
  absent.
• Middle tibiatibia:
  the segment of the leg, between the femur and the tarsus
  with anterioranterior:
  toward the head or on the head side of a segment being described
  margin strongly convexconvex:
  curved outward
  .
• Middle tibiatibia:
  the segment of the leg, between the femur and the tarsus
  as broad, or nearly as broad, as hind tibiatibia:
  the segment of the leg, between the femur and the tarsus
  .
• Preoccipital ridge preoccipital ridge:
  the carina that dorsolaterally surrounds the back of the head
  without carinacarina:
  a clearly defined ridge or keel, not necessarily high or acute; usually appears on bees as simply a raised line
  (Pasteels 1969Pasteels 1969:
  Pasteels, J.J. 1969. La systeacute;matique geacute;neacute;rique et subgeacute;neacute;rique des Anthidiinae (Hymenoptera, Apoidea, Megachilidae de l#39;ancien monde. Socieacute;teacute; royale d#39;entomologie de Belgique 31: 3ndash;148.).
• Female mandiblemandible:
  bee teeth, so to speak, usually crossed and folded in front of the mouth
  with three or four teeth.
• Female tarsal claws bifurcatebifurcate:
  divided into two branches; forked
  .
• Male T7T7:
  the segments on the top side of the abdomen, often abbreviated when referring to a specific segment to T1, T2, T3, T4, T5, T6, or T7
  simple, unmodified (Pasteels 1969Pasteels 1969:
  Pasteels, J.J. 1969. La systeacute;matique geacute;neacute;rique et subgeacute;neacute;rique des Anthidiinae (Hymenoptera, Apoidea, Megachilidae de l#39;ancien monde. Socieacute;teacute; royale d#39;entomologie de Belgique 31: 3ndash;148.).

May be confused with

Apianthidium resembles Trachusa due to similar body form and size. However, Apianthidium can be differentiated from Trachusa by the distinctly hooked apices of the hind tibial spurs, and the middle tibiatibia:
the segment of the leg, between the femur and the tarsus
as broad, or nearly as broad, as hind tibiatibia:
the segment of the leg, between the femur and the tarsus
(Michener 2007Michener 2007:
Michener, C.D. 2007. The Bees of the World (2nd ed.). Johns Hopkins University Press, Baltimore and London, 953 pp.).

Known invasives

There are no known invasives.

Host associations

Floral associations are unknown.

Nesting behavior

Nesting behavior is unknown.

Distribution

Apianthidium is only known to occur in Borneo (Michener 2007Michener 2007:
Michener, C.D. 2007. The Bees of the World (2nd ed.). Johns Hopkins University Press, Baltimore and London, 953 pp.).

Distribution map generated by Discover Life -- click on map for details, credits, and terms of use.

References

Michener, C.D. 2007. The Bees of the World (2nd ed.). Johns Hopkins University Press, Baltimore and London, 953 pp.
 
Pasteels, J.J. 1969. La systématique générique et subgénérique des Anthidiinae (Hymenoptera, Apoidea, Megachilidae de l'ancien monde. Société royale d'entomologie de Belgique 31: 3-148.