Int. J. Diptorol. Res. 7(2) ISSN 1021-1020

10 May 1996 0 1996 An International Journal of Dipterological Research

Afrotropical species of the genus Tenuopus Curran

(Diptera: Dolichopodidae)

IGOR YA. GRICHANOV

Grichanov, I.Ya.1996.Afrotropical species of the genus Tenuopus Curran

(Diptera: Dolichopodidae). Int. J. Dipterol. Res., 7(2): 125 - 131.

Four species of the genus Tenuopus are described from Liberia, Uganda and Zaire.

New records, catalogue and a key to Afrotropical species of Tenopus are given.

I.Ya. Grichanov, All-Russian lnstitute of Plant Protection, Podbelskogo 3,

St.Petersburg-Pushkin, 189620, Russia.

Key Words. Diptera, Dolichopodidae, Tenuopus, Africa.

Introduction

The genus Tenuopus was established by Curran

(1924) for new species T. univittatus Curran nec

Loew (misidentification) from South Africa. In sub-

sequent publications he described T. acrosticalis and

T. frontalis (female) and transferred Saucropus

cyanescens Loew to the genus Tenuopus, relating it

with the subfamily Chrysosomatinae (Curran 1927a,

1927b). Later Parent (1931. 1934, 1939) described

three new species and excluded Saucropus univittatus

Loew and S. cyanescens Loew from the genus. Dyte

k. Smith (1980) transferred Psilopus unicolor Becker

to the genus Tenuopus, listing it within the sub-

family Neurigoninae. All species are known from

South and Tropical Africa, though an undescribed

species was mentioned by Dyte (1975) from Orien-

tal Region.

In this paper four new species of Tenuopus are

described and new records for kuown species are

given on the basis of the collections from the Natu-

ral History Museum, Londoa (NHML) and the

Hungarian Natural History Museum (HNHM).

All the species examined and described have the

following features. Long, mostly yellow body; one

pair of ocellar, occipital and postvertical bristles;

probosois with a pair of black lateral setae and yellow

hairs; scape bare, pedicel with digitated appendix

upon first tlagellomere, more developed in males;

arista dorsal, short pubescent. Mesonotum convex,

no mesoscutal flattening; six or seven dorsocentral

bristles with tirst bristle somewhat smaller; scutel-

lum with two strong bristles. Legs mostly yellow,

coxae with yellow hairs and black bristles, hind coxa

with one external bristle. Wing vein R2+3, reachs costa

in apical fifth of wing, being nearly parallel with

R4+5;M1 with gentle arc to apex, reaching costa before

wing apex, near R4+5; M2 usually present as fold on

membrane; m-cu straight, bm-cu reduced. Abdomen

of six segments with strong marginal bristles, with-

out tergal window in segment 1, and with less scle-

rotized "pseudotergit" between segments 1 and 2 (see

Parent, 193B; Bickel, 1994); seventh segment and

hypopygium small, epandrium usually concealed;

cercus short and simple, surstylus usually long, oBen

bifurcated; at least one very long and a few short

epandrial lobes.

llolotypes and paratypes of the new specics are

conserved in the Natural History Museum (London).

List of known Tenuopus species from

Afrotropical Region

Tenuopus Curran

Tenuopus Curran, 1924: 228. Typc-species Saucro-

pus univittatus Loew, 1868 sensu Curran (misident.)

= Tenuopus erroneus Parent, 1934, by original des-

ignation.
 
 

acrrosticalis Curran, 1927: ]3 - Uganda, Nigeria,

Zaire, Kenya (!), Ghana (!)

cognatus Parent, 1934: 122 - South Africa

erroneus Parent, 1934: 123 - South Africa

=univittatus Curran nec Loew

frontalis Curran, 1927: 265 - Congo, Ghana,

Nigeria, Sierra Leone

fursovi sp. n. - Liberia

guttatus Parent, 1939: 269 - Ghana, Zaire

kononenkoi sp. n. - Uganda

maculatus Parent, 1931: 46 - Malawi, Tanzania

(!)

shcherbakovi sp. n. - Uganda

unicolor Becker, 1914: 126 (Psilopus) - Kenya,

Zaire (?)

zverevi sp. n. - Zaire

Key to known species of Tenuopus

1. Wings with maculations........................ 2

Wings monochrome, usually hyaline.............. ..3

2. Wings with one apical spot along costa.....

...............................maculatus Parent

- Wings with three rounded spots in apical half,

in females somewhat diffused.....,.............

............................... guttatus Parent

3. Males........................................ .4

- Females....................................... .9

4. Ac.rostichals weak, in a single row on the ante-

rior fourth of mesonotum........................ .5

- Acrostichals strong, arranged ia two rows ex-

tending to posterior third of mesonotum ........ .6

5. Hind tarsi entirely black, fore tarsi simple....

................................... cognatus Parent

- Hind tarsi yellow at base, 4 - 5th tarsomeres of

fore tarsi with short lateral black plumage ......

.................................... erroneus Parent

6. Middle femora with 6 - 8 long black veatral bris-

tles in the middle half, louger than diameter

of femora, and with some white hairs; fore

basitarsomere 1.5 times as long as fore tibia,

with four dorsal setae.............. zverevi sp. n.

- Middle femora with numerous hairs only, fore

basitarsomere no much longer than fore tibia,

with one or two dorsal setae.................... .7

7. Middle femora with black ciliation, hind femora

bare, fore basitarsomere with one dorsal seta

...................................kononenkoi sp. n.

- Middle and hind femora with white hairs be-

neath, fore basitarsomere with 2 dorsal setae .

................................................. 8

8. Median green-brownish vitta of mesonotum half

as wide as surface between dorsocentral bris-

tles, surstylus not bifurcated ......fisrsovi sp. n.

- All the surface between dorsocentrals black-green,

surstylus bifurcated........... acrosticalis Curran

9. Acrostichals in a single row or absent........ 10

- Acrostichals in two rows, sometimes irregular ...

................................................. 13

10. Acrostichals strong, extending to posterior third

of mesonotum, frons black, pollinose............. 11

- Acrostichals weak and restricted to anteriormost

of mesonotum, or absent, frons shining blue .....

..................................................12

11. First flagellomere oval, with rounded apex ... .

................................... unicolor Becker

- First flagellomere subtriangular, with sharp or

right-angle apex................ shcherbakovi sp. n.

12. Hind tarsi entirely black; R,, and V, reach

costa at wing apex.................. cognatus Parent

- Hind tarsi yellow at base; rV, reach costa be-

fore wing apex...................... erroneus Parent

13. Acrostichals weak, arranged in irregular two

rows; fore tibia with two basal dorsal setae

only, fore basitarsomere wiihout dorsal s tae .

.................................. kononenkoi sp. n.

- Acrostiohals arrang d in two regular rows; fore

tibia with two basal dorsal and two dorsal setae

in the middle; fore basitarsomere with 1 - 2

dorsal setae..................................... 14

14. Frons entirely pollinose, fore basitarsomere 1.2

times as long as fore tibia.......................

................................ acrosticalis Curran

- Frons more than half shining green; fore

basitarsomere as long as fore tibia.......... ......

....................................frontalis Curran

Descriptions and new records

Tenuopus kononenkoi sp. n.

(Fig. l)

Holotype. Male, Uganda: Ruwenzori Range, XII.

1934 - I.1935, B.M.E.Afr.Exp. B.M. 1935 - 203 /

Mobuku Valley, 7300 ft (F. W. Edwards).

Pararypes. Female, Uganda: Kigezi Dist., XI.1934,

B.M.E.A&.Exp. B.M. 1935 - 203 / Mt. Mgahinza, 8000

B (F. W. Edwards); female, Uganda: Ruwenzori Range,

Nyinabitaba, 8650 ft, 7 - 13.VII.1952 (D. S. Fletcher)/

Ruwenzory Exp. B.M. 1952 - 566.

Description: Male. Frons black-violet, grey pol-

linose. One pair of well developed ocellar, occipital

and postvertical bristles, the last one present nearly

at end of postocular row. Ventral postcranium cov-

ered with irregular white hairs. Face silvery-white,

narrow, 10 times as high as wide in the middle, and

half as wide as first flagellomere. Epistome nearly

half as wide as slightly bulging clypeus. Palpi and

proboscis short, yellow, covered with white hairs,

proboscis also with a pair of black lateral setae.

Antennae yellow-orange, as long as height of head.

Pedicel witb n srown of short black bristles. First

flagellomere slightly longer than its height al. base,

rounded. Arista dorsal, microscopically haired, twice

as long as articles of antcnna together.

Mesonotum and pleura yellow-orange. Area between

dorsocentrals and scutellum mostly metallic blue-

green. Seven dorsocentral bristles with first bristle

somewhat smaller and with a few hairs in front of

them; short acrostichals in two regular rows, restricted

to anterior two thirds of mesonotum. Scutellum with

two strong bristles and two hairs from the outside.

Propleuron with 1 - 2 yellow setae.

Legs yellow, apical segments of middle and hind

tarsi dark. Fore and middle coxae from the front

with hairs and some black apical bristles of various

length. Hind coxae with one long black external

bristle. Middle and hind femora with a preapical

anterior bristle. Fore femora with many pale fine

postero-ventral hairs, as long as diameter of femo-

ra. Fore tibia with one anterodorsal and one poster-

odorsal in basal part, one or two posterodorsal in

the middle and on or two apical bristles. Fore

basitarsomere with one dorsal cheta in thc middle.

Length ratio of fore coxa to femora to tibia to tar-

sus (segments from first to fifth) - 3.0: 3.8: 5.1:

5.5: 3.8: 1.4: 0.8: 0.6. Middle femora bears a

row of black ventral hairs, nearly as long as diam-

eter of femora. Middle tibia with three anterior, three

dorsal, five antero-ventral, three postero-ventral, four

or five apical bristles. Middle basitarsomere with a

few short dorsal and ventral setae. Lcngth ratio of

middle coxa to femora to tibia to tarsus (segments

from first to fifth) - 2.0 . 4.3: 6.9: 5.7: 2.2 .

1.7: O.B: 0.4. Hind femora without long hairs. Hind

tibia witb four or five anterior, two or three antero-

dorsal, four or five postero-dorsal bristles, with some-

what elongated numerous postero-ventral setulae, with

two or three apical bristles. Hind basitarsomere with

a few short dorsal and ventral setae. Length ratio of

hind coxa to femora to tibia to tarsus (segments first

to second) - 1.5: 5.9: 9.8: 3.6: 3.2.

Wings slightly darkened, veins brown. Ratio of parts

of costa between R2+3, and R4+5, to those between

R4+5, and M1 - 3.3 : 0.2. M1 with gentle arc to

apex, reach costa before wing apex; M2 present as

fold on membrane; crossvein ei-irc straight. Ratio

of crossvein m-cu to apical part of M1+2,, (fork-han-

dle) to apical part of CuA1 - 2.0: 5.7: 5.3. Anal

vein reduced. Anal angle obtuse. Squamae yellow,

with brown apex and pale bristles. Halteres yellow

with orange knob, halter stem thin and long.

Abdomen mostly yellow-brown, black setose: 1st

segment yellow, 2nd and 3rd - yellow with brown

edgings, 4th and 5th - mostly brown, rest of ab-

domen and hypopygium brown, cerci and surstyli

yellow. Cercus scoop-shaped, densely haired. Sursty-

lus deeply bifurcated, lobes thin and long, ventral

lobe with thin appendix expanded backwards, dor-

sal lobe with long apical bristle. Epandrial lobes

prominent, with long setae.

Female. Similar to male except lacking male sec-

ondary sexual characters, otherwise as follows: frons

dark-green-violet, slightly grey pollinose; face yel-

low-brown, silvery-grey pollinose, wide, nearly thrice

as long as wide; palpi and proboscis as well as

antennae dark-orange; ratio of length lo height of

first flagellomere to length of arista - 1.5: 1.0: 7.5.

Acrostichals arranged in irregular two rows. Femo-

ra without long hairs. Four tibia with one antero-

dorsal and one posterodorsal bristles in basal fifth,

without distinct dorsal setae in the middle. Four and

hind basitarsomeres without bristles; middle basitarso-

mere with a few short ventral setae. l.ength ratio of

fore coxa to femora to tibia to tarsus (segments from

first to fifth) - 2.4: 3.2; 3.7: 3.4: 1.6: 1.1:

0.8: 0.5. Lengtlc ratio of middle coxa to femora to

tibia ro tarsus (segments from first to tifth) - 1.9:

4.2: 6.2; 3.7: 1.4: 1.0: 0.6: 0.4. Length ratio

of hind coxa to femora to tibia to tarsus (segments

from tirst to fifth) - 1.3: 5.0: 7.2: 2.0: 2.2:

1.3: 0.7: 0,5. Ratio of parts of costa between R2+3

and R4+5 to those between R4+5 and:M1 - 3.5: 0.5.

Ratio of crossvein m-cu to apical part of M1+2 (fork-

handle) to apical part of CuA1 - 2.0: 5.6; 4.7. All

abdominal segments yellow-orange with brown

edgings.

Lcngtb: male body 9.5 mm, body with antennae

11.1 mm, wing-length 6.9 mm, wing-width 2.2 mm;

female body 6.1 - 6.5 mm, body with antennae 7A -

7.8 mm, wing-lenglh 6.7 - 7.1 mm, wing-width 2.2 nun.

Distribution. Uganda,

Etymology. The species is named in honour of the

Russian entomologist Dr, A. P. Kononenko.

Diagnosis. T. kononenkoi is most closely related

to T. acrosticalis, differing in having black cilia-

tion on middle femora and only one dorsal seta on

fore basitarsomere. Male surstylus and epandrial lobes

have some similarity with those of T. acrosticalis.

Females, contrary to male, have weak acrostichals,

arranged in irregular two rows, only two basodorsal

setae on fore tibia and bare fore basitarsomere, though

thesc characters can be also used for diagnosis.

Tenuopus zverevi sp. n.

(Figs 2, 3)

Holotype. Male, Belg. Congo: Elisabethville, 22.VI.

l933 (Ch. Seydel). B.M. 1933 - 520.

Description. Male. Similar to T. kononenkoi ex-

cept as noted. Six dorsocentral bristles with first

bristle somewhat smaller. Fore femora with many

pale fine postero-ventral hairs, as long as diameter

of femora. Fore basitarsomere with four dorsal che-

tae. Length ratio of fore coxa to femora to tibia to

tarsus (segments from first to fifth) - 2.3: 3.9:

4.6: 6.8: 2.8: 1.5: 0.6: 0.5. Middle femora bears

a row of 6 - 8 black ventral bristles in the middle

half, 1.5 times as long as diameter of femora, and

same white hairs. Middle tibia with four anterior,

two dorsal and three ventral bristles. Length ratio

of middle coxa to femora to tibia to tarsus (seg-

ments from tirst to fifth) --- 1.6: 4.5: 6.8: 5.7:

2.0: 1.6: 0.7: 0.4. Hind femora without long hairs.

Length ratio of hind coxa to femora to tibia to tar-

sus (segments from first to fifth) - 1.4: 5.7: 9.3:

3.7; 2.8; 1.6: O.B: 0.5. Ratio of parts of costa

between R2+3, and R4+5 to those between R4+5 and

M1 - 2.8: 0.2. Ratio of crossvein m-cu to apical

part of M1+2 (fork-handle) to apical part of M3+4 -

1.9: 6.4: 6.1. Anal vein partly reduced. Anal angle

right.

Abdominal segments, except first, orange with

brown edgings, hypopygium orange-brown, cerci and

surstyli yellow, apex of surstyli brown. Cercus spoon-

shaped, densely haired. Surstylus shallow bifurcated

at apex. Epandrial lobes prominent, with long setae.

Length: body 8.2 mm, body with antennae 9.8 mm,

wing-length 6.8 mm, wing-width 2.2 mm.

Distribution.. Zaire.

Etymology. The species is named in honour of the

Russian entomologist Dr. A. A. Zverev.

Diagnosis. T. zverevi is close to T. acrosticalis

group. Howcvcr, male has additional 6 - 8 strong

black ventral bristles on the middle femora. Ii is

clearly distinguished by biseriate acrostichals, and

by four dorsal setae on four basitarsomcre. Details

of bypopygium are quite differcnt from those of other

species except T.maculatus.

Tenuopus fursovi sp. n.

(Fig. 4)

Holotype. Male, Liberis: Kpaine, 1400 ft (7'10'

N, 9'7' W), 7.1.1953. N L591 (Dr. W. Peters) / Pres.

Dr. W. Peters. B.M. 1954 - 410.

Description. Similar to T. acrosticalis Curran ex-

cept as noted. Ratio of length to height of first flag-

ellomere to length of arista - 17: 14: 85. Median

green-brownish vitta of mesonotum half as wide as

surface between dorsocentral bristles. Second tarso-

mere of fore tarsus with small basoventral cicatrix

covered with microscopic white hairs. Length ratia

of fore coxa to femora to tibia to tarsus (segments

from first to fifth) - 2.5: 3.5: 4.2: 4.9: 1.9:

1.9: 0.7 . 0.5. Length ratio of middle coxa to fem-

ora to tibia to tarsus (segments from first to fifth) -

1.5: 4.0; 5.7: 4.8: 1.7: 1.4: 0.7: 0.5. Length

ratio of hind coxa to femora to tibia to tarsus (scg-

ments from first to fifth) - 1.8: 5.0: 8.5: 3.2:

2.6: 1.7 . O.B: 0.6. Ratio of parts of costa between

R2+3, and R4+5, to those between R4+5, and M1 - 2.7:

0.2. M1+2 and M1 form obtuse angle. Ratio of cross-

vein m-cu to apical part of M1+2 (fork-handle) to

apical part of CuA1 (up to the wing edge) - 2.0:

4.9: 3.6. Hypopygium yellow, cercus spear-shaped,

with pointed apex, densely haired; surstylus dissected

on apex, with curved lobes; epandrial lobes promi-

nent, with long setac.

Length: body 7.4 mm, body with antennae B.7 mm,

wing-length 6.0 mm, wing-width 1.9 mm.

Distribution. Liberia.

Etymology. The species is named in honour of the

Russian entomologist Dr. V. Fursov.

Diagnosis. T. fursovi differs from males of the

other species of Tnuopus by small basoventral

cicatrix on second tarsomere of fore tarsus. It is very

closely related to T. acrosticalis, being separated

by the following characters. Median green-brown-

ish vitta of mesonotxuu half as wide as surface be-

tween dorsocentral bristles, surstylus not deeply bi-

furcated.

Tenuopus shcherbakovi sp. n.

(Fig. 5)

Holotype. Female, Uganda: Namanve, 11.10.1934

(J.Ford). N 148 / Uganda, J. Ford. B.M. 1937 -

273/ A191.

Description. Similar to T. unicolor except as noted.

Frons and face entirely silvery-white pollinose, ground

colour of frons black, face 4 times as high as its

width in the middle. Antenna yellow, first flagel-

lomere subtriangular, with distinct sharp or right-

angle apical angle (not pointed). Ratio of length to

height of first flagellomere to length of arista -

11: 11: 80. Length ratio of fore coxa to femora to

tibia to tarsus (segments from first to fifth) - 2.3:

3.5: 3.9 '. 3.2: 1.9 '. 1.4: 0.7: 0.4. Length ratio

of middle coxa to femora to tibia to tarsus (seg-

ments from first to fourth) --1.8: 4.1: 6.3: 3.8:

1.3: 1.0: 0.5. Length ratio of hind r:oxa to femora

to tibia to tarsus (segments from first to fifth) -

1.7: 4.9: 7.8: 2.0: 2.4: 1.4: 0.8: 0.4. Ratio of

parts of costa between R2+3 and R4+5 to those be-

tween R4+5 and M1 - 2.7 : 0.3. M1+2 and M1 form

obtuse angle. Ratio of crossvein m-cu to apical part

of;V, (fork-handle) to apical part of CuA1, (up to

the wing edge) - 3: 10: 8.

Length: body 6.4 mm, body with antennae 7.8 mm,

wing-length 6.5 mm, wing-width 1.9 mm.

Distribution. Uganda.

Etymology. The sper:ies is named in honour of the

Russian entomologist Dr. D. Shcherbakov.

Diagnosis. T.shcherbakovi differs from all the other

species of Tenuopus by small short subtriangular

first tlagellomere. It is very closely related to T.

unicolr, being separated by mentioned above char-

acters.

Tenuopus unicolor (Becker)

(Fig. 6)

Material examined. Female, Kenya: 24 - 29.XII.1970

(A.E. Stubbs). B.M. 172 - 211 / Meru, 5 - 7 000 feet.

Diagnosis. A female from the NHML collection is

most closely related to T. unicolor as briefly de-

scribed by Becker (1914, 1923). It can be separated

from the other species by uniseriate acrostichals,

monochrome wings, weak pollinose black frons and

short oval first flagellomere. Additional diagnostic

features are as follows. Face white pollinose, 3.5

timcs as high as wide in the middle; ratio of length

to height of tirst tlagellomere to length of arista

14: 12: 80. Scutellum brown from above, with

metallic retlection, postscutumbrownish; six dorso-

centrals with first bristle somewhat smaller. Middle

and hind femora with strong anterior preapical bris-

tles, fore tibia with two basodorsal and two dorsal

setae in the middle. Length ratio of fore tibia to

first tarsomere - 4.0: 3.5, hind basitarsomere yel-

low except apex. M1+2 and M1 form right angle. M1

renches costa just before wing apex. Ratio of cross-

vein m-cu to apical part of M1+2 (fork-handle) to

apical part of Crcd, (up to the wing edge) - 3: 10: 10.

Distribution. Kenya, Zaire (?).

Tnuopus acrosticalis Curran

(Fig. 7)

Material examined. Male, Uganda: Mukono, 1909.

Rec-d from Col. Sir D. Bruce, A.M.S. 1910 - 154 /

Tenuopus acrosticalis Curr., O. Parent [det.]. 2 fe-

males, Uganda: Ruwenzori Range, X11.1934 - 1.1935.

B.M.E.Afr. Exp. B.M. 1935 - 203 / Kllembe, 4500

ft (F. W. Edwards). 2 females, Kenya: IS.Xll.l970

(A. E. Stubbs). B.M. 1972 - 211 / Kakamega For-

est, 5200 feet. Female, S. Nigeria: Ibadan, 8.XII.1913

(Dr. V. A. Lamborn) / Pres. by Imp. Inst. Ent. B.M.

1934 - 547 / Tenuopus acrosticalis Curr., O. Parent

[det.]. Male, Gold Cost, 1913 (A. E. Evans) [NHML]/

Terruopr~s frontalis Curr., O. Parent [det.). Male,

Ghana: Kwadaso / 21.V11.1969 (leg. Endrody-Y)

[HNHM].

Diagnosis. Frons entirely pollinose; all the surface

between dorsocentrals black-green, acrostichals

strong, arrnnged in two rows extending to posterior

third vf mesonotum; wings monochrome; fore, mid-

dle and hind femora with white hairs beneath, fore

basitarsomere 1.2 times as long as fore tibia, with

2 dorsal setae; surstylus bifurcated. Hypopygium

structure in T. acrosticalis male, identified by O.

Parent, shows distinct diffcreuce from that in other

species except T. kononenkoi. A male with blue label

from the collection of NHML, identified hy O. Parent

as T. frontalis, is similar to male of T. acrosticalis,

except some subtle differences in colour features;

hypopygium morphology of both specimens with no

difference.

Distribution. Uganda, Nigeria, Zaire, Kenya, Ghana.

Tenuopus maculatus Parent

(Figs B, 9)

Material examined. Male, Zomba, Nyasaland (M.S.

Stannus) / Pres. by Imp. 1nst. Ent. B.M. 1933 - 414/

Tenuopus maculatus Par., O. Parent [det.]. Male,

Nyasaland, Zomba, 7.V.1911 (Dr. Y.... Cild.), 1911 -

250. Male, Shimba Hills, March 1941 (van Sommeren)/

Com. Inst. Ent. Coll. Yo. 13261. Female, Ngong, Feb.

1943 (van Sommeren) / Com. Inst. Ent. Coll. No.

13261. Female, Tanganyika, Amam, 3000 ft, 1956

(J. G. Halcrow) / Com. Inst. Ent. Coll. No. 15176 /

Psilopus not in B.M. nr. unicolor Beck., van Emden

det. 1957 / Brit. Mus. 1957 - 624. Female, Tanza-

nia, 2900 m, Ma. Kilimanjaro, First Bivouae on Umbwe

Route / 1985.02.14, Nr.77 (L. Peregovitz) [HNHM].

Diagnosis. Males and females of T. maculatus can

be easily identified by one dark apical spot along

wing costa. Hypopygium is very different from that

of the other species examined, except T. zverevi.

Distribution. Malawi, Tanzania.

Tenuopus erroneus Parent

(Fig. 10)

Material examined. 2 males, E.Cape Prov., Katberg,

1 - 13 XI.1932 / S. Africa (R. E. Turner). Brit. Mus.

1932 - 551. Male and 2 females, E.Capc Prov., Katberg,

4000 ft, XII.1932 / S.Africa (R. E. Turner). Brit.

Mus. 1933 - 69. Female, Mossel Bay, Cape Province,

Dec. 1921 / S.Africa (R. E. Turner), Brit. Mus. 1922 -

25 / Tenuopus erroneus nom. nov. = T. univittatus

Curr. nec Lw., O. Parent [det.]. Female, E.Cape Prov.,

Katberg, 4000 ft, I - 15.l.l933 / S. Africa (R. E.

Turner). Brit. Mus. 1933- - 79. Female, East London,

3.8.1924 (H. K. Munro) / S. Africa: Pres. by H. K.

Munro, B.M. 1928 - 255 / Tenuopus univittatus Lw.,

det. C. H. Curran. Female, on lab. windows, Eshowe,

Zululand (C. V. Meeser). Coll.738, 13.XI.1935 /

Tenuopus cognatus Par., det. D. Hollis, 1962. Fe-

male, caught in lab. on window, showing a green

phosphorus light / caught in lab.: Eshowc, Zululand.

Coll.1774, 15.1.1937 / Tenuopus cognatus Par., det.

D. Hollis, 1962.

Diagnosis. T. erroneus is a type species for the

genus, but it has extremely different hypopygium

morphology, comparing with the other species ex-

amined. In general hypopygium structure remains

the same, except that surstylus and epandrium lobes

are short, the former is curved and sclerotized. T.

erroneus males are clearly distinguished by short

lateral plumage on 4th and 5th tarsomeres of fore

tarsi. Females differ from the other species in hav-

ing the following complex of attributes. Acrostichals

absent, frons shining blue-violet, hind tarsi yellow

at base,M1 reaches costa before wing apex.

Distribution. South Africa.

Ackaowledgements

I am sincerely grateful to Dr. Brian Pitkin for his

kindness in giving me the opportunity to study the

collection of the Natural History Musemn (London).

Some specimens were kindly loaned for me by Dr.

Laszlo Papp from the Hungarian Natural History

Museum (Budapest).

References

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Received 4.Xl.l995