IDENTIFICATION PAGE #1


FOR WILD BEES
OF THE NATIONAL BUTTERFLY CENTER

Mission, Texas

CONFIRMED ID's March - April 5, 2019

Hostile Leafcutter  (female) 
Megachile inimica 


Size:  14 mm

Associated plant at NBC:  
Resinbush / Skeleton-leaf Goldeneye

(Viguiera stenoloba)

Plant Family:  Asteraceae

April 2019  

Detailed Photographs: 

This female bee was found on skeletonleaf goldeneye. We removed it from the flower to eliminate any misleading color yellow cast resulting from light reflected by the yellow blossoms.

The hairs on the bee's face and body (including hair bands around the abdomen and the scopae) are light yellow. The bee's legs and leg spurs are entirely red. Part of each pedicel and scape are red as well. The tegulae are reddish-brown.

The bee has a narrow, long abdomen.

Its jaws have four teeth, with a cutting edge between the second and third tooth.

The jaws are pitted and ornately carved. The clypeus has a distinctive margin.

CLose-up of jaws & clypeus

The bee's lower face and jaw protrude forward.

The bee's vertex is finely pitted. F-1 and the pedicel of each antennae are partly red.

Dorsal view of the bee's abdomen.

Sternum of bee

Female bee

Female bee

2. Lithurgopsis littoralis (female)


Size:  14-15 mm (female)

Associated plant at NBC:  
Texas prickly pear

(Opuntia engelmannii)

March 2019  

Detailed Photographs: 

Lithurgopsis littoralis woodborer bee - (c) Copyright 2019 Paula Sharp

Female bee

Lithurgopsis littoralis woodborer bee - (c) Copyright 2019 Paula Sharp

Female bee

These are images of a male bee found in the same area on prickly pear cactus.  The made bee was, identified as Lithurgopsis littoralis. 

Lithurgopsis littoralis (female)

 

Size:  14-15 mm (female)

Associated plant at NBC:  
Texas prickly pear

(Opuntia engelmannii)

March 2019  

Detailed Photographs: 

Lithurgopsis littoralis wood-borer bee - (c) Copyright 2019 Paula Sharp

Female bee

This is a large bee, with a very long body and long hind legs.

This male bee has a pitted face and somewhat protuberant clypeus.

Face of bee. When the bee is viewed from underneath, a third tooth is visible on each jaw below and behind the other two.

WJPEG-Lithurgopsis-littoralis-F-carna-be
WJPEG-Lithurgopsis-littoralis-F-carna-be

This female Lithurgopsis was discovered feeding on the blossoms of prickly pear (Opuntia englemmannii) in April, 2019.

Dorsal view of female bee -- the bee has two curved hornlike protrusions on its face.

CLose-up showing protrusions, which curved outward and forward

Lithurgopsis littoralis wood-borer bee - (c) Copyright 2019 Paula Sharp

Female bee

Coquilleti Leafcutter (possibly)

Megachile (Litomegachille) possibly coquilletti

Size: 13-14 mm (female)

Associated plant at NBC:  
Texas thistle 

(Cirsium texanum)

Plat Family:  Asteraceae

April 2019  

Detailed Photographs: 

A female leafcutter with her abdomen tip raised in the air

Profile view of female bee: this bee was found feeding on a Texas thistle.

Trip of abdomen

View of abdomen from the side

T6 of the abdomen curves upward slightly; underneath is a distinctive fringe of black hair

sternum

Dorsal view of vertex & thorax

Face of female bee

Megachile parallela leafcutter female - (c) Copyright 2019 Paula Sharp

Female bee

Megachile parallela leafcutter female - (c) Copyright 2019 Paula Sharp

Female bee

Parallel Leafcutter
Megachile parallela

Size:  11-12 mm (male)

Associated plant at NBC:  
Blanketflower 

(Gaillardia pulchella)

March 2019  

Detailed Photographs: 

Dense light yellowish-brown hairs cover the bee's face. The bee's front legs are unmodified.

The male bee has four teeth in each jaw.

Close-up of jaws

Vertex & antennae. The vertex is long, and F1 is slightly longer than the pedicel, but shorter than F2.

T-6 is distinctly notched.

View of the sternum: lateral teeth on S4 are just barely visible here

Alternate view of notch. (Lateral teeth on S4 are visible behind the notch.)

Close-up of hairs on sides and back of abdomen

Male bee

Male bee

CONFIRMED IDENTIFICATIONS MARCH 26 - April 1, 2019

Lithurgopsis littoralis   (male)

This male bee was identified on bugguide by John Ascher in March -- see:  https://bugguide.net/node/view/1646063


Size:  14 mm (male)

Associated plant at NBC:  
Texas prickly pear

(Opuntia engelmannii)

March 2019  

Detailed Photographs: 

This is a large bee, with a very long body and long hind legs.

This male bee has a pitted face and somewhat protuberant clypeus.

Face of bee. When the bee is viewed from underneath, a third tooth is visible on each jaw below and behind the other two.

Image of vertex: the space between the lateral ocelli is less than the distance from them to the back of the head.

The powerful hind legs of the male bee

Male bee

Male bee

Melissodes (Tachymelissodes) opuntiellus
 

Size:  8 mm (male)

Associated plant at NBC:  
Red prickly poppy 

(Argemone sanguinea )

March  2019  

Detailed Photographs: 

The male bee has a pale clypeus and very long tongue.

Closer view of clypeus. There are spots of yellow near the base of each jaw. The clypeus has a narrow dark margin on the bottom edge.

The scapes, pedicel and F-1 are dark.

View of abdomen

Male bee

Nomia fedorensis (not tetrazonata)

Size:  9  mm (male)

Associated plant at NBC:  
Berlandier's fiddlewood

(Citharexylum berlandieri)

Plant Family:  Verbenaceae

March 2019  

Detailed Photographs: 

WJPEG-Nomia-male-2-NBC-facing-left-NBC-#

Male bee

Megachile policaris

Size: 13  mm (male)

Associated plant at NBC:  
Skeleton-leaf Goldeneye

(Viguiera stenoloba)
Plant Family: Asteraceae

March 2019  

Detailed Photographs: 

Male bee

WJPEG-Megachile-policaris-male-1-facing-

Osmia (Diceratosmia) subfasciata
(chewing on Opuntia englemannii)

Size:  12  mm (female)

Associated plant at NBC:  
Texas Prickly Pear

(Opuntia engelmannii)

March 2019  

Detailed Photographs: 

Female bee

Xylocopa mexicanorum

Size:  22  mm (female)

Associated plant at NBC:  
Texas Prickly Pear

(Tecoma stans)

Sept., Nov., 2018, March 2019  

Detailed Photographs: 

Female bee

Ceratina texana?
 

Size:  6 mm (female)

Associated plant at NBC:  
Golden prickly poppy

(Argemone aenea)

March 2019  

Detailed Photographs: 

A female Ceratina measuring 6 mm. The bee has bronze coloring, and reddish antennae, legs and jaws.

The bee has a bell-shaped prominent ivory mark on its face. The entire face is densely pitted.

There is a conspicuous ivory mark on each pronotal lobe; an ivory stripe extends down most of teach tibia.

The bee's head & thorax are densely pitted.

VIewed in profile, T6 of the female bee's abdomen has a smooth, shallow slope and lacks a rounded or angular notch where the slope dips slightly.

Rear view of abdomen

Female bee

CONFIRMED IDENTIFICATIONS APRIL 1, 2019

Diadasia rinconis

Size:  11-12  mm (male)

Associated plant at NBC:  
Texas Prickly Pear

(Opuntia engelmannii)

March 2019  

Detailed Photographs: 

WJPEG-Diadasia-ONE-00-legs-sprawled-NBC-
WJPEG-Diadasia-ONE-00-legs-sprawled-NBC-

Male bee

Male bee

TIFF-Diadasia-ONE-00-legs-sprawled-GALLE

Diadasia rinconis (male)

Size:  11-12 mm (male)

Associated plant at NBC:  
Golden prickly poppy 

(Argemone aenea )

March  2019  

Detailed Photographs: 

Two Diadasia males inside a golden prickly poppy. The remaining images are of the bee at top left.

Profile of bee

Face of bee,

Hind leg

Male bee

Is this in all likelihood the same species as that shown at the top of the page?  It was found in a different location, and not on cactus.

Since posting this, we received your message that these male bees may be using pricly poppies solely as a resting place, but not as a food source.

Diadasia rinconis (female) (probably)

or Diadasia australis (possibly)

Size:  12  mm (female)

Associated plant at NBC:  
Texas Prickly Pear

(Opuntia engelmannii)

March 2019  

Detailed Photographs: 

The bee's clypeus is protuberant, and its eyes are long and narrow.

Hind leg

Dorsal view of abdomen

Female bee