Megachile (Neocressoniella)

Taxonomy

Family: Megachilidae
Subfamily: Megachilinae
Tribe: Megachilini
Genus: Megachile Latreille, 1802
Subgenus: Neocressoniella Gupta, 1993
Common name: none

Overview

Megachile (Neocressoniella) are elongate bees with black integument and almost entirely dark brown or black hair. They range in body length from 12–21 mm (Michener 2007).

Diagnostic characteristics

(modified from Michener 2007)

  • Preoccipital carina present laterally.
  • Female mandible is four-toothed.
  • Female mandible outer acetabular groove with a tuft of orange hairs near the apex.
  • Female mandible with incomplete cutting edge in second interspace and complete cutting edge in the third interspace. The cutting edge in the third interspace is twice as long as the incomplete cutting edge in the second interspace.
  • Male front coxa without a spine.
  • Male front tarsi are not expanded or modified.
  • Male mandible is four-toothed and lacks a basal projection on the lower margin.
  • Male T6 preapical carina is large and has a small median emargination.
  • Male T6 apical margin with a slender, sharp lateral tooth as well as a broad sub-median tooth.

May be confused with

Megachile (Neocressoniella) may be confused with bees within the subgenera Megachile (Megella) as both have a strong preoccipital carina behind the gena (Gonzalez 2008). Megachile (Neocressoniella) can be differentiated from Megachile (Megella) by their less elongate body and almost entirely dark brown or black hair (Gonzalez 2008).

Host associations

Megachile (Neocressoniella) are known to visit flowers from the plant families Fabaceae, Lamiaceae, and Lythraceae (Kumari and Kumar 2016).

Nesting behavior

Nesting behavior is unknown.

Diversity

Megachile (Neocressoniella) includes three described species: M. anthracina, M. carbonaria, and M. elizabethae (Michener 2007; Kumari and Kumar 2016); none are known to occur in the U.S. or Canada. Placement of these species has been questioned, and it is possible that M. (Neocressoniella) is monotypic and only includes M. carbonaria (Baker and Engel 2006; Gonzalez et al. 2019).

Known invasives

There are no known invasives.

Distribution

Megachile (Neocressoniella) occurs throughout India and east to Burma (Michener 2007).

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

<p><em>Megachile elizabethae </em>female face, photo: Chelsey Ritner</p>
Megachile elizabethae female face, photo: Chelsey Ritner
<p><em>Megachile elizabethae </em>female lateral habitus, photo: Chelsey Ritner</p>
Megachile elizabethae female lateral habitus, photo: Chelsey Ritner
<p><em>Megachile elizabethae </em>female abdomen, photo: Chelsey Ritner</p>
Megachile elizabethae female abdomen, photo: Chelsey Ritner