New Euryglossa ( Euhesma) bees 
421 
11(10). Fronto-clypeal suture clearly evident. 
.£. meeka sp. nov. 
Fronto-clypeal suture not clearly evident... 12 
12(11). Clypeus with a median longitudinal furrow 
.E. sulcata sp. nov. 
Clypeus without a median longitudinal 
furrow.E. granitica sp. nov. 
13(1). Only known from Northern Territory and 
Queensland.E. sturtiensis sp. nov. 
Only known from Western Australia and 
South Australia.14 
14(13). Tibiae, tarsi and terminal gastral terga 
golden brown.E. aurata sp. nov. 
Tibiae, tarsi and terminal gastral terga 
predominantly dark brown.15 
15(14). Labial palp longer than antennal flagellum 
.16 
Labial palp not longer than antennal 
flagellum. 17 
16(15). Supraclypeal area almost glabrous and 
highly polished.E. symmetra sp. nov. 
Supraclypeal area neither glabrous nor 
polished..E. nalbarra sp. nov. 
17(15). Dorsal surface of clypeus concave medianly 
(indented).E. atra sp. nov. 
Dorsal surface of clypeus with a slight 
median longitudinal furrow. 
.E. scoparia sp. nov. 
Dorsal surface of clypeus in no way 
concave.....18 
18(17). Fronto-clypeal suture distinct, labial and 
maxillary palps about equal. 
.E. balladonia sp. nov. 
Fronto-clypeal suture not distinct, labial 
palps clearly longer than maxillary palps 
.E. leonora sp. nov. 
Because the size and shape of the head and labial 
palps are the most easily distinguishable characters 
of these bees, they are used to place them into the 
following groups: 
Group 1. Eight species in which the labial 
palps although longer than the maxillary palps 
are relatively normal and not as long as the head 
(Figure 14). In the venation of the forewing, the 
first recurrent vein is mostly interstitial with the 
first transverse cubital. Males are described for 5 
species. Species included: E. (E) atra; E. (E) 
aurata; E. (E) balladonia; E. (E) leonora; E. (E) 
nalbarra; E. (E) scoparia; E. (E) sturtiensis; E. (E) 
symmetra. 
Group 2. Eight species with enormously 
extended labial palps in which segments 1 and 2 are 
short and dark brown and segments 3 and 4 are 
long, pale white or yellowish and mostly ribbon-like 
(Figures 15, 17). In tire venation of the forewing, the 
first recurrent vein is distal to the first transverse 
cubital. Males are known for 5 species. Species 
included: E. (E) alicia; E. (E) cuneifolia; E. (E) 
granitica; E. (E) meeka; E. (E) pantoni; E. (E) sulcata; E. 
(E) wiluna; E. (E) yellowdinetisis. 
Group 3. Four species with enormously 
extended labial palps in which only segment 1 is 
short and dark brown, segments 2, 3 and 4 are all 
extended and paler (Figure 16). In the venation of 
the forewing, the first recurrent vein is distal to the 
first transverse cubital. Males are recognised for 2 
species in this group. They differ from others in 
that their heads are as wide as or wider than long 
(appear square). The area behind the eyes and 
ocelli is expanded (Figures 18, 19). Species 
included: £. (E) coppinensis; E. (E) macrayae; E. (E) 
newmanensis; E. (E) walkeri. 
In the descriptions that follow species are arranged 
in alphabetical order in each of these groups. 
Group 1 
Euryglossa (Euhesma) atra sp. nov. 
Figure 49 
Material Examined 
Holotype 
$, Boorabbin Rock, Western Australia, 31°12'S, 
120°17'E, 4-9 October 1981, T.F. Houston, on 
flowers of Eremophila (WAM). 
Description 
Female 
Length about 5.0 mm; wing length about 4.0 
mm. Relative head measurements: width 7.7; 
length 8.0; clypeal length 2.4; lower interocular 
distance 4.5; upper interocular distance 5.0; 
clypeo-antennal distance 0.5; interantennal 
distance 1.5; antennocular distance 1.0; 
interocellar distance 1.4; ocellocular distance 1.3. 
Anterior margin of clypeus truncate, upper 
margin of clypeus slightly concave; malar space 
evident; labial palp segments in increasing lengths 
in the order 2,1, 3, 4. 
Frons and dorsum of thorax with dense reticulation 
and dull; whole of face below antennal insertions 
covered with dense reticulation and few punctures, 
clypeus with median indentation. Labial palp 
segments 1 and 2 dark brown, 3 and 4 yellowish. 
Forewing with first recurrent vein slightly distal 
to first transverse cubital. 
Etymology 
The specific name relates to the dull black colour 
of head and thorax. 
