A review of Afrotropical Trichardis Hermann, 1906, and the description of the first Oriental representative of the genus (Diptera: Asilidae: Laphriinae)
Author
Londt, Jason G. H.
text
African Invertebrates
2008
2008-12-31
49
2
171
171
http://www.bioone.org/doi/abs/10.5733/afin.049.0210
journal article
10.5733/afin.049.0210
2305-2562
7917381
Trichardis zinidi
sp. n.
Figs 53, 54
Etymology: Named for the collector Dr I. Abu-Zinid, who donated a number of East African
Asilidae
to the Natal Museum.
Redescription (based on
holotype
in excellent condition):
Head
: Orange-brown anteriorly dark red-brown posteriorly, colours masked by silver pruinescence covering entire head, pale yellow and white setose.Antenna brown-orange, postpedicel dark red-brown, yellow setose; postpedicel clavate (L:D=2.6:1). Mystax shiny yellowish. Ocellar tubercle with 4 macrosetae. Proboscis and palpi dark red-brown.
Thorax
: Orange-brown and dark red-brown patches, gold-silver pruinose, shiny pale yellow setose. Postpronotum entirely pruinose, mesonotum extensively apruinose centrally margins silver pruinose, macrosetae and setulae shiny yellowish. Scutellum apruinose except for narrow anterior margin. Anepisternum with pale yellow posterior macroseta, pruinose except for large anteroventral area. Proepimeron, katepisternum and anepisternum entirely pruinose. Legs: Orange-brown, femora dark red-brown dorsally, pulvilli and empodium of similar length. Hind femur orange-brown, dark red-brown dorsally, length:height ratio 3.6:1, ventral tubercles poorly developed. Hind tibia lacking ventrodistal spur. Wing: 4.8×
1.8 mm
. Costal vein strongly developed as far as wing tip, then very weakly developed along posterior margin of wing and absent from alula. Membrane extensively microtrichose; discal cell microtrichose but weak proximally, cell r
5
microtrichose in distal half only.
Abdomen
: Dark red-brown, extensively silver pruinose, shiny pale yellowish setose. T2 dark red-brown, extensively pruinose (central area apruinose).
ơ
genitalia (
Figs 53, 54
): Epandrium in lateral view slightly longer than basal part of gonocoxite (i.e. excluding distal projection of gonocoxite and gonostylus). Proctiger moderately dorsoventrally compressed. Hypandrium greatly reduced and simple. Gonocoxite in ventral view lacking projections and with about 6 medially directed distal macrosetae; mediodistal projections stout, converging distally, with fairly sharply upturned sclerotised distal part. Gonostyli well-developed, bulky, converging distally to upturned flange-like tips. Aedeagal prongs small, more or less straight, with small terminal filamentous tubules.
Holotype
:
KENYA
:
ơ
‘
Kenya
:
Kajiado Dist.
/
Nguruman area
700 m
/
01°50'S
:
36°56'E
/ coll:
I. Abu-Zinid
/
Date
:
28.iv.1990
’ (
NMSA
).
Paratypes
:
KENYA
:
1^same
data as holotype (
NMSA
)
.
TANZANIA
:
1^‘
Tanzania:
10 km
N–NE /
di Mto Wa Mbu
[?], presso bosco / di euforbia (
1100 m
), alla luce’ (
MZUF
)
.
UNKNOWN:
1^‘
Afrique / Laga Arba [?] / 25 juillet’, ‘Museum Paris’, ‘
Trichardis
/
H. Oldroyd
det. 1965’ (
MNHN
)
.
Distribution and biology: Recorded from
Kenya
and
Tanzania
.Adults collected in April and July (Table 1). Little label data relating to habitat preference exists, although
one specimen
is labelled ‘presso bosco di euforbia’ which suggests an arid environment. The life history and prey preferences are unknown.
Similar species:
T. zinidi
has an entirely pruinose postpronotal lobe and in this respect can be grouped with
apicalis
,
grisescens
,
ornata
,
picta
,
terminalis
,
testacea
and
turneri
.
The species is, however, most similar to
apicalis
.
ORIENTAL
SPECIES
While this paper focuses on the Afrotropical fauna I have identified a single new species of
Trichardis
from
India
that represents the first record of the genus from the Oriental Region.