Revision of Ephemerythus Gillies 1960 (Ephemeroptera: Tricorythidae)
Author
Kluge, Nikita J.
Author
Novikova, Eugenia A.
text
Zootaxa
2017
2017-11-10
4347
1
31
55
journal article
31571
10.11646/zootaxa.4347.1.2
913d9d2a-1d0a-4857-96d6-05a2a8297620
1175-5326
1044826
08E7E948-410A-4EA8-9DB3-6B0374C2A467
Ephemerythus gilliesi
sp.
n.
(
FIGS 88–97
)
Ephemerythus
Sp. C
:
Kluge 2010a
: 30
(larVa).
Etymology.
THE SPEcIES IS NAmED IN HONOR Of M.T. GILLIES, WHO PROvIDED uS WITH THE SPEcImEN DEScRIbED bELOW.
Material.
HOLOTyPE
: L/S
♀
:
CAMEROON
, YAOuNDé,
6.IX.1956
, cOLL.
M.T.
GILLIES (REcEIvED fROm
M.T.
GILLIES
IN 1991
).
Descriptions.
Female larva.
BITING EDGE
Of mAXILLA RELATIvELy NARROW: INNER-DORSAL ROW, bESIDES
TWO DENTISETAE
,
WITH
2
SETAE
PROXImAD Of PROXImAL DENTISETA; INNER-vENTRAL ROW cONSISTING Of 4–5
SETAE
; APIcAL TufT Of
LONG SETAE
cONSISTING Of 6
SHORT
ARcHED
ROWS
(
FIG. 88
). FEmORA
NOT
WIDE
; STOuT, SPATuLATE
SETAE LONG
, ON fORE fEmuR fORmING IRREGuLAR, TRANSvERSE ROW (
AS
IN
E. niger
– KLuGE 2010A:
FIGS
16, 17
).
FORE
TIbIA
WITH POINTED
, PEcTINATE
SETAE
ON
INNER SIDE
,
WITH
LONGITuDINAL ROW Of STOuT, bLuNT
SETAE
ON
ANTERIOR SIDE
,
AND WITH
IRREGuLARLy SITuATED, STOuT, bLuNT
SETAE
ON
POSTERIOR SIDE
(
FIG. 89
).
MIDDLE AND HIND
TIbIAE
WITH POINTED
, PEcTINATE
SETAE
ON
INNER SIDE AND TWO
LONGITuDINAL
ROWS
Of STOuT, bLuNT
SETAE
(
AS
IN
E. niger
– KLuGE 2010A:
FIG. 17
).
HIND PROTOPTERA
AbSENT. AbDOmINAL
TERGA AND STERNA WITH SPARSE
SImPLE
SETAE
, WITHOuT
OTHER
SOckETS (
IN
cONTRAST TO
E. pictus
). TERGALIuS V WITHOuT vENTRAL LObE; TERGALIuS VI AbSENT (
FIGS
90–93
;
AS
IN
E. pictus
–
FIGS
40–43
). CuTIcLE NEARLy uNIcOLOR, OcHER OR bROWNISH; HyPODERmAL cOLORATION uNkNOWN.
Winged female.
HIND WINGS AbSENT (
AS
IN
E. niger
AND
E. nigricolor
).
Egg
(
FIGS 94–96
).
AS
cHARAcTERIzED fOR
Ephemerythus
(SEE AbOvE)
; LENGTH (WITHOuT cAP AND TAIL) AbOuT
0.2 mm
; TAIL LENGTH
0.09–0.13 mm
. TAIL mucH LONGER THAN IN OTHER SPEcIES (AbOuT ½ Of EGG LENGTH), cONSISTING Of LONG, STOuT POINTED PROcESSES, WHIcH cAN bE fuSED ONE WITH ANOTHER by mEANS Of THIN WALLS; NumbER Of PROcESSES EITHER fOuR (
FIG. 94
), THREE (
FIG. 95
) OR TWO (
FIG. 96
).
Male.
UNkNOWN.
Size.
BODy LENGTH AbOuT
6 mm
.
Comparison.
E. gilliesi
SP.N.
DIffERS fROm
E. niger
AND
E. nigricolor
by THE STRucTuRES Of TERGALII, WHIcH ARE SImILAR TO THAT Of
E. pictus
; IT DIffERS fROm
E. pictus
by THE STRucTuRES Of mAXILLAE AND fEmORA, WHIcH ARE SImILAR TO THOSE Of
E. niger
AND
E. nigricolor
(SEE
TAbLE 1
).
Ephemerythus gilliesi
SP.
N. DIffERS fROm ALL OTHER EXAmINED SPEcIES Of
Ephemerythus
by ITS vERy LONG EGG TAILS (
FIGS 94–96
) AND by THE PRESENcE Of bLuNT SETAE ON THE POSTERIOR SIDE Of THE fORE TIbIA (
FIG. 89
).