A Review Of The Afrotropical Species Of Leptocera Olivier (Diptera: Sphaeroceridae)
Author
Papp, L.
text
Acta Zoologica Academiae Scientiarum Hungaricae
2012
2012-08-10
58
3
225
258
journal article
10.5281/zenodo.5735888
2064-2474
5735888
Leptocera austroafricana
sp. n.
(
Figs 1–12
)
Holotype
male (
NMSA
):
MALAWI
,
Zomba
Plateau
,
13–14. xii. 1980
,
1500 m
,
Londt
&
Stuckenberg.
1535
Ad. Montane forest
.
Paratypes
:
1 male
,
1 female
(
NMSA
)
,
1 male
(HNHM, abdomen and genitalia prepared and preserved in a plastic microvial with glycerol): same as for
holotype
;
1 female
(
NMSA
): ibid.,
Mtchisi forest
reserve, 1334
Ac
,
1500 m
, 3–4. xii..
Montane forest
& woodland.
SOUTH AFRICA
:
1 male
1 female
(
NMSA
): S AFRICA: E
Cape
#7, 5 km
W of Rhodes
,
30° 49’ S
:
27° 55’E
,
1800 m
.
Date
:
5. 11. 1992
.
Natal Museum Expedition
, grassland & ravine.
RWANDA
:
5 males
1 female
(
HNHM
,
2 males
with gen. prep.):
Rwanda
,
Volcanoes Nat. Park
–
1988.
V
. 7.
, leg.
Vojnits.
Paratypes
from
Rwanda
are slightly damaged: thoracic setae, and parts of legs missing, etc
.
Measurements in mm: body length 2.45 (
holotype
), 1.87–2.55 (
paratypes
), wing length 2.23 (
holotype
), 2.03–2.30 (
paratypes
), wing width 1.01 (
holotype
), 0.85–1.04 (
paratypes
).
Body including facial plate and frons dark brown with grey microtomentum.
Anterior fronto-orbital pair only 3/5 of the length of the posterior pair. Gena below eye
0.12 mm
, longest axis of eye
0.37 mm
. 3 interfrontal pairs plus 1 minute thin interfrontal seta anteriorly. Genal seta well above peristomal setae but only
0.14 mm
long. Aristal cilia
0.025 mm
, similarly to the apical cilia on first flagellomere.
1+3 dorsocentral pairs, anterior dorsocentral pair well anterior to suture. 5 acrostichal macrochaetae: first pair about as long as presutural
dc
, 2nd pair slightly longer than presutural dorsocentral pair; 2 pairs plus a right-side one, some short acrostichals between them. Second scutellar pair as long as apical pair, 3rd pair half as long. Wing light brownish grey, veins light brown (ochre), venation as in the related species. Legs dark brown, only mid and hind tarsi ochre. Mid tibia with antero-dorsals at 5/53, 10/53, 17/53, 34/53 (
0.22 mm
long), a dorsal seta at 32/53 and a
0.25 mm
long dorsal seta at 36/53; postero-dorsals at 10/53, 18/53, a perpendicular posterior seta at 36/53. Posterior apical setae on mid tibia both long: posterodorsal
0.10 mm
and posteroventral
0.13 mm
. Mid basitarsal seta
0.225 mm
long.
One long latero-caudal pair of setae each on tergite 3 to tergite 5. Male sternite 5 (
Figs 2–3, 5
) large, medio-caudal desclerotised area wide and shallow, with dense microtrichia. Synsternite (
Fig. 3
) comparatively small, sternite 6 medium-long, sternite 7 and 8 rather small. Epandrium with long setae, particularly so ventrally. Cercus (
Fig. 1
) long though small with 3–4 apical setae. Hypandrium (
Fig. 8
) with robust asymmetrical apodeme, which is much shorter than phallapodeme, medial part with the usual caudal process. Subepandrial sclerite (
Fig. 1
) small,
0.08 mm
broad but only
0.09 mm
high. Anterior part of surstylus (
Fig. 7
) with moderately long, tapered anteroventral process and broad rounded ventral lobe; the latter with numerous short setae on medial surface. Posterior part of mm for
Figs 4–5, 8
,
0.1 mm
for
Figs 1, 6–7
Figs 1–8.
Leptocera austroafricana
sp. n.
, male postabdomen. 1 = subepandrial sclerite, cercus and contours of posterior part of surstylus, caudal view, 2 = sternite 5 and sternite 6, 3 = contours of sternite 5 and synsternite 6–8, caudal view, 4 = phallus and phallapodeme, left lateral view, 5 = caudal part of sternite 5, ventral view, 6 = postgonite, left lateral view, 7 = anterior and posterior part of surstylus, lateral view, 8 = hypandrium, ventral view. Scale bars: 0.4 mm for Figs 2–3 (upper bar), 0.2
surstylus (
Figs 1, 7
) with apical bristle only half as long as body of the surstylus. Postgonite (
Fig. 6
) with extremely long but not broad basal part, which has a posteroventral process. Apical part of postgonite slender with curved apex. Phallus
0.15 mm
long with a strong melanised dorsal rib (
Fig. 4
). Phallapodeme (
Fig. 4
) much longer than hypandrial apodeme.
Figs 9–16.
Leptocera
spp.
, female postabdomen and spermathecae. 9–12.
L. austroafricana
sp. n.
: 9 = tergite 10 fused with cerci, dorsal view, 10 = tergite 8, lateral view, 11 = sternite 8, ventral view, 12 = spermathecae. 13–16.
L. elgonensis
RICHARDS
: 13 = tergite 10 fused with cerci, dorsal view, 14 = tergite 8, lateral view, 15 = spermathecae, 16 = sternite 7 and sternite 8, ventral view. Scale bars: 0.2
mm for
Figs 9–10, 13–14, 16
,
0.1 mm
for
Figs 11–12, 15
Female tergite 8 (
Fig. 10
) with rather few setae on dorsal half, ventral half with medium-long setae only. Sternite 8 (
Fig. 11
) with a broad but short posteromedial lamella and with 2 pairs of short caudal setulae. Tergite 10 completely fused with cerci (
Fig. 9
), with a pair of medium-long seta on tergal part and with a longer pair of setae on cercal part. Spermathecae (
Fig. 12
) very characteristic with very long sclerotised ducts; shape oval, unpaired spermatheca sub-globular, all the three spermathecae with thin apically curved spicules on most of their surface.
Etymology. The specific epithet (“south African”) of the new species refers to its occurrence in the southern half of Africa.