Six new species of Afrotropical Allodia (Diptera: Mycetophilidae): DNA barcodes indicate recent diversification with a single origin
Author
Magnussen, Trude
Author
Kjaerandsen, Jostein
Author
Johnsen, Arild
Author
Søli, Geir E. E.
text
Zootaxa
2018
2018-04-11
4407
3
301
320
journal article
30301
10.11646/zootaxa.4407.3.1
e16ee99a-5bf1-4889-b873-03ac7df253a0
1175-5326
1216502
9241C33E-D224-4ECC-829E-F9D9290BC7B5
Allodia jaschhofi
Magnussen
sp. nov.
(
FIgS 7
,
8
)
Diagnostic characters.
A. jaschhofi
CAN bEST bE SEPARATED fROM
THE OTHER SPECIES
DESCRIbED
HERE
, bASED ON
THE
fOLLOWINg COMbINATION Of CHARACTERS: LENgTH Of
RM
EQUAL
TO LENgTH
STEM
Of
THE POSTERIOR
fORK
; THE DORSAL LObE Of gONOSTyLUS IS SIMILAR TO
A. karkloofensis
, WHICH bOTH HAVE A LARgE MEMbRANOUS AREA ON THE INTERNAL APEX Of THE LObE (
FIg. 10
); THE MEDIAN LObE IS NOT DISTINCTLy SEPARAbLE fROM THE OTHER SPECIES; THE bASAL PART Of THE gONOSTyLUS IS SIMILAR TO THAT Of
A. karkloofensis
, bUT WITH A SMALL POINTED STRUCTURE PRESENT, WHICH IS AbSENT IN
A. karkloofensis
(
FIg. 9
). THE fEMALE (
FIg. 8
) CAN bE SEPARATED fROM
A. nyeriensis
ON SHAPE Of HyPOgyNAL VALVES (
FIg. 2
).
Type
material.
HOLOTyPE
♂
.
SOUTH AfRICA
:
CENTRAL
DRAKENSbERg,
CATHEDRAL PEAK NATURE RESERVE
, RAINbOW GORgE (
28.9516°S
,
29.2183°E
, 1500
MASL
),
SWEEP-NET
,
OLD
gROWTH INDIgENOUS fOREST. 0 4
DES
. 2005. TSZD-JKJ-
101654
. LEg. M. JASCHHOf. (TMU).
PARATyPE
1 ♀
,
DATA
AS
fOR
HOLOTyPE
. (TMU).
Measurements.
MALE: BODy LENgTH 3.10 MM; WINg LENgTH 2.6 MM. FEMALE: BODy LENgTH 3.65 MM; WINg LENgTH 2.78 MM.
Coloration.
HEAD AND CLyPEUS bROWN. MOUTHPARTS AND PALPOMERES WHITISH yELLOW. ANTENNAE bROWN, WITH SCAPE, PEDICEL AND fIRST HALf Of fIRST fLAgELLOMERE WHITISH yELLOW. SCUTUM bROWN. LATERAL SCLERITES bROWN. WINgS CLEAR WITHOUT MARKINgS. HALTERES WHITISH. LEgS WHITISH. AbDOMEN bROWN. TERMINALIA WHITISH yELLOW.
Head.
TWO OCELLI, LOCATED CLOSE TO THE EyE MARgIN. HEAD COVERED WITH fINE TRICHIA, EXCEPT fOR ROW Of AbOUT 5 SHORT SETAE NEAR EyE MARgIN, AbOVE OCELLUS. ANTENNAE IN MALE AbOUT TWICE
AS
LONg
AS
THORAX, IN fEMALE SLIgHTLy LONgER THAN THORAX (1.22 MM/0.74 MM, RESPECTIVELy). SCAPE AND PEDICEL WITH SEVERAL SETAE ON DISTAL THIRD. FLAgELLOMERES CyLINDRICAL, DENSELy CLOTHED WITH fINE TRICHIA. FIRST fLAgELLOMERE TWICE
AS
LONg
AS
SCAPE.
Thorax.
ANTEPRONOTUM WITH 5 STRONg SETAE. SCUTUM COVERED WITH UNIfORM SMALL, PALE SETAE, WITH STRONg LATERAL PREALAR AND POSTALAR SETAE. DISCAL bRISTLES AbSENT. SCUTELLUM WITH 2 STRONg bRISTLES. LATEROTERgITE WITH 6 LONg SETAE. OTHER LATERAL SCLERITES bARE.
Legs.
FORE-, MID AND HIND TIbIAE WITH SHORT SETAE ARRANgED IN ROWS. MID TIbIA WITH 8 ANTERODORSAL AND 25 POSTERODORSAL bRISTLES, ON DISTAL 3/4 Of SEgMENT. HIND TIbIA WITH 7 ANTERODORSAL AND 8 POSTERODORSAL bRISTLES.
Wings.
SC SHORT, ENDINg IN R, LENgTH Of
RM
EQUAL TO LENgTH Of STEM Of POSTERIOR fORK, bASE Of ANTERIOR fORK DISTINCTLy bEfORE bASE Of POSTERIOR fORK. R1 AND R5 WITH SETAE, AbSENT AT bASIS Of VEINS.
Male terminalia
(
FIg. 7
). TERgITE 9 MEDIALLy DIVIDED, EACH PART ROUNDED, COVERED WITH MINUTE TRICHIA, WITH TWO STRONg bRISTLES AND fOUR SMALL SETAE. CERCI CLOTHED WITH fINE TRICHIA, WITH LONg SETAE APICALLy; PSEUDOCERCI WITH SEVERAL LONg SETAE MEDIALLy AND APICALLy. DORSAL LObE Of gONOSTyLUS ObLONg, APEX PROMINENTLy ROUNDED, WITH LARgE, ROUND MEMbRANOUS AREA INTERNALLy; OUTER SURfACE WITH NUMEROUS STRONg SETAE. MEDIAN LObE WITH SLIgHTLy CURVED VENTRAL SIDE, bUT WITHOUT HEEL-SHAPED POSTEROVENTRAL CORNER; 8 STRONg AND 3 SHORTER SETAE ON POSTERIOR MARgIN; TWO SMALL SETAE ON DORSAL EDgE; ONE LONg SETA ON POSTERIOR EDgE, WITH LONg DISTANCE fROM VENTRAL MARgIN (LESS THAN HALf Of THE TOTAL DISTANCE fROM bASIS). VENTRAL LObE SLIgHTLy CLUb-SHAPED, WITH 5 LONg AND THREE SHORT SETAE AT APEX. BASAL PART Of gONOSTyLUS WITH THREE STRUCTURES; DORSAL STRUCTURE SMALL AND POINTED WITH 1-2 SMALL SETAE, MIDDLE STRUCTURE ROUND WITH ONE LONg SETA AND VENTRAL STRUCTURE LARgE, ROUNDED WITH SEVERAL SHORT SETAE (
FIg. 7C
).
FIGURE 7.
THe MALe TeRMINALIA OF
A. jaschhofi
.
A
, LeFT: DORSAL VIeW, RIGHT: VeNTRAL VIeW;
B
, GONOSTYLUS FROM INNeR SIDe;
C
, BASAL PART OF GONOSTYLUS. SCALe bAR = 1µM.
Female terminalia
(
FIg. 8
). TERgITE 8 SHORT. CERCI TWO-SEgMENTED; fIRST SEgMENT ObLONg, SLIgHTLy ARCUATE, fUSED AT bASIS; SECOND SEgMENT Egg-SHAPED, NARROWER THAN fIRST SEgMENT, WITH SEVERAL LONg SETAE (
FIgS 8A, 8B
). GONAPOPHySES fUSED, MEMbRANOUS, TONgUE-SHAPED WITH SMALL SETAE AROUND EDgE. HyPOgyNAL VALVES ELONgATED, TRIANgULAR SHAPED, bLUNT, SLIgHTLy CURVED TOWARDS APEX; ONE LONg SETA ON TIP; LAbIA MEMbRANOUS (
FIg. 8C
).
Etymology.
NAMED AfTER THE COLLECTOR.
Remarks.
THE SPECIMEN HAS bECOME PALE AfTER yEARS Of STORAgE IN ETHANOL. MEASUREMENTS WERE MADE ON SPECIMEN IN ETHANOL.