——————— Cl Or rrr TOO Fr 
19 
20 
21 
22 
23 
TACHINIDAE OF AUSTRALIA 95 
Head with one pair of reclinate orbital setae (strong and isolated, but 2 sometimes 
with a smaller erect seta ventrad and mesad of the true reclinate orbital) . : 22 
Gena conspicuously broad, two-fifths or more ofeye height. Facial ridges prominent 
at least lower half well visible in profile. Parafacials about three times as wide 
as third antennal segment. Three sternopleural setae (exceptionally four but 
if so not arranged 2 + 2). Basal node of vein R,,,; with four or more small 
setulae. Mid tibia with at least two strong ad setae. Head thickly golden 
pollinose. Dorsum of thorax bright yellow or golden pollinose with four bold 
black vittae (inner pair shorter than outer pair) : UGIMEIGENIA Townsend 
Gena narrow, not exceeding one-sixth of eye height. Facial ridges not visible in 
profile or only just visible immediately above vibrissae. Parafacials less than 
twice as wide as third antennal segment. Four sternopleural setae (2 + 2). 
Basal node of vein Ry, , with one setula (rarely also with one minute super- 
numerary hair). Mid tibia with one ad seta (except in Zygobothvia atropivora). 
Head not thickly golden te at most only partially pale yellow. Dorsum 
of thorax not so - 20 
Ocellar setae very strong, subequal i in size to reclinate orbital setae, inserted slightly 
in front of anterior ocellus. Parafacials totally bare. Mid tibia with one or 
two ad setae é : ZYGOBOTHRIA Mik 
Ocellar setae absent or very weak and much smaller than reclinate orbital setae, 
when present not inserted at all forwards of the anterior ocellus. Parafacials 
finely haired on upper parts (bare in Dvino which is not yet positively known 
from Australia). Mid tibia with one ad seta . : 3 : A : : 21 
Parafacials finely haired on upper parts (Text-fig. 51), hair sometimes extending 
slightly on to lower halves, occasionally only a few hairs immediately below 
lowest frontal setae but parafacials never entirely bare. Ocellar setae present, 
weak and wiry. Each side of venter of fourth abdominal tergite of ¢ with 
well defined hair-patch, usually large and dense with hair very long and converging 
into a distinct fascicle : : : : : . PALEXORISTA Townsend 
Parafacials completely bare. Ocellar setae absent. Each side of venter of fourth 
abdominal tergite of g with unmodified hair or with a large area of short fine 
close-set hair not formed into a definite fascicle : . DRINO Robineau-Desvoidy 
Scutellum with subapical setae inserted very far apart, distance between their 
bases conspicuously greater than that between a subapical seta and its corres- 
ponding basal seta. Apical scutellar setae very strong, horizontal or almost so, 
nearly as strong as lateral setae. Four sternopleural setae (2 + 2). Abdomen 
of 3 with a large area of very long dense hair around the sides of T4 
STURMIA Robineau-Desvoidy 
Scutellum with subapical setae not very widely separated, distance between their 
bases less than or at most subequal to that between a subapical seta and its 
corresponding basal seta. Apical scutellar setae very weak and directed at least 
slightly upwards, very much weaker than lateral setae. Three or four sterno- 
pleural setae. Abdomen of $ with or without such hair : 23 
Abdomen with last tergite conspicuously small in relation to preceding tergite 
(T5 usually not more than about half as long as T4). Three or four sternopleural 
setae (normally three in g and four in 9, but males with four and females with 
three occur). Lateral scutellar setae very strong, subequal in size to basals 
and subapicals (often a second pair of laterals developed in addition to main 
pair). Abdomen of ¢ with large area of very dense long hair around sides of 
T4. Txr+2 and T3 always without median marginal setae. Larger forms 
(length 9-15 mm) : : : BLEPHARIPA Rondani 
Abdomen with last tergite Hoe gue small in relation to preceding tergite 
(T5 subequal in length to T4 in ¢, about two-thirds as long in 9). Four sterno- 
pleural setae in both sexes. Lateral scutellar setae well developed but distinctly 
