A new species of Monohelea Kieffer, M. uruguayensis, is described and illustrated from a male specimen from Uruguay.Facultad de Ciencias Naturales y Muse

Felippe Bauer, Maria Luiza

Spinelli, Gustavo Ricardo

Memórias do Instituto Oswaldo Cruz

Servicio de Difusión de la Creación Intelectual

63Mem Inst Oswaldo Cruz, Rio de Janeiro, Vol. 93(1): 63-64, Jan./Feb. 1998A New Neotropical Species of Monohelea Kieffer fromUruguay (Diptera: Ceratopogonidae)Maria Luiza Felippe-Bauer,  Gustavo R Spinelli *Departamento de Entomologia, Instituto Oswaldo Cruz, Av. Brasil 4365, 21045-900  Rio de Janeiro, RJ, Brasil*Instituto de Limnología “Dr. Raúl A. Ringuelet”, Casilla de Correo 712, 1900 La Plata, ArgentinaA new species of Monohelea Kieffer, M. uruguayensis, is described and illustrated from a malespecimen from Uruguay.Key words: Neotropical predaceous midge - Monohelea uruguayensis sp.n. - UruguayStudying material from light trap collectionmade by one of us (GRS) in the Department ofArtigas, Uruguay, we found a male of anundescribed species of Monohelea Kieffer, whichis here described and illustrated.In our study we used the terminology explainedin Monohelea revisions by Wirth & Williams(1964) for Northamerican species, Lane & Wirth(1964) for Neotropical species, and Ratana-worabhan & Wirth (1972) for Oriental species.Monohelea uruguayensis Felippe-Bauer &Spinelli  new species(Figs 1-7)40; A.R. (12-15/3-11) 0.96. Palpus uniformly palebrown; segments compressed.Thorax: without definite pattern in slide mountedspecimen. Legs (Fig. 3) brown; coxae and trochant-ers dark brown; hind leg darker; proximal ½ offemora dark; femora with a narrow, oblique, darkbrown stripe in middle, and a subapical, dorsal darkbrown mark; knees yellowish; hind tibia with adorsal dark brown mark basally and a dark brownstripe in middle; apices of tibiae dark brown; foreand mid tibiae slightly dark mesally; fore and hindtibiae with apical spur, longer in fore leg; hind tibialcomb with 5-7 bristles; lengths of trochanters,femora and tibiae of fore, mid and hind legs in pro-portion of 12-74-70, 15-87-80, 18-95-90. Tarsi(Fig. 5) pale, pilose; hind basitarsus darker onproximal 1/2, with one row of ventral palisade se-tae; fore and hind basitarsi with one basal and oneapical spine; mid basitarsus with 2 basal and 2 api-cal spines; apical spines of tarsomeres 2-4 of fore,mid and hind legs as follows: 1-1-1, 2-2-2, 1-1-1,basal spines absent; lenghts of fore, mid and hindtarsomeres in proportion of 38-19-15-11-11, 48-22-15-11-11, 46-26-19-15-12; fore, mid and hindtarsal ratios 2.0, 2.1, 1.7; claws paired, equal-sized,about 0.4 times as long as 5th tarsomere. Wing (Fig.1): with irregular dark areas and spots, definingthe hieroglyphic pattern ; macrotrichia absent; 2ndradial cell nearly twice as long as 1st; costal ratio0.74. Halter missing.Abdomen: pale brown. Genitalia (Fig. 7): Ninthsternum spiculate except on basal portion; 9th ter-gum tapered. Gonocoxite moderately stout, nearly1.4 as long as basal wide; gonostylus curved inapical portion, gradually narrowed to apex, about0.55 times as long as gonocoxite, moderatelly pi-lose basally. Aedeagus (Fig. 6) triangular, with 2pointed ventral plates, and slightly sclerotized dor-sal structure which arises in the middle way toaedeagus base, and produced beyond the apices ofventral plates. Parameres (Fig. 4) nearly 1.8 timesas long as aedeagus, separated with trilobed base;Type locality: Colonia San Gregorio, Artigas, Uru-guay.Male Holotype: wing length 1.05 mm; breadth 0.41mm.Head: eyes black, bare, widely separated. Antenna(Fig.2) appearing pale brown in the slide mountedspecimen; pedicel, distal half of flagellomere 12and flagellomeres 13-15 brown, 4-11 somewhatbarrel-shaped, 12 about 2,5 times as long as wide,13-15 elongated; flagellomeres with lengths in pro-portion of 40-13-13-12-12-11-11-11-10-15-38-36-Fig. 1: wing photograph of Monohelea uruguayensis sp.n.+Corresponding author. Fax: +55-21-290.9339Received 4 April 1997Accepted 23 June 199764 New Neotropical Species of Monohelea Kieffer  ML Felippe-Bauer, GR Spinellieach with a curved, strongly sclerotized, medianhook-shape process which measure 0.62 times aslong as distal portion of the paramere; basal armsgreatly sclerotized; distal portion narrowing gradu-ally and curved to blunt tip.Female: unknown.Distribution: known only from the type locality.Type: holotype male, Colonia San Gregorio, Dept.Artigas, Uruguay, 20.X.1987, G. Spinelli col.,CDC trap. In the collection of the Museo de LaPlata, Argentina.Etymology: this species is named after the Coun-try of Uruguay, where the type was collected.DISCUSSIONMonohelea uruguayensis most closely re-sembles M. poncai Lane & Wirth by the wing andlegs patterns. It can be readily distinguished fromponcai by the distinct parameres with more stoutapex; the median hook-shaped process is greatlysclerotized and measure 0.62 times as long as dis-tal portion of parameres (0.37 in poncai).ACKNOWLEDGEMENTSTo Genilton José Vieira and Rodrigo Mexas forassisteance in the wing photos.REFERENCESLane J, Wirth WW 1964. The biting midge genusMonohelea Kieffer in the Neotropical Region(Diptera:Ceratopogonidae) Studia Ent 7: 209-236.Ratanaworabhan NC, Wirth WW 1972. The biting midgegenus Monohelea Kieffer in the Oriental Region(Diptera:Ceratopogonidae) Pacif Ins 14:439-473.Wirth WW, Williams RW 1964. New species and recordsof North American Monohelea (Diptera:Ceratopogonidae). Ann Ent Soc Amer 57: 302-310.Monohelea uruguayensis sp.n., male. Fig. 2: antenna.  Fig. 3: legs (left to right) fore, mid, hind.  Fig. 4: parameres.  Fig. 5: tarsi (leftto right) fore, mid, hind.  Fig. 6: aedeagus.   Fig. 7: gonocoxite and gonostylus.

A new neotropical species of Monohelea kieffer from Uruguay (Diptera: ceratopogonidae)

SEDICI - Repositorio de la UNLP

63Mem Inst Oswaldo Cruz, Rio de Janeiro, Vol. 93(1): 63-64, Jan./Feb. 1998
A New Neotropical Species of Monohelea Kieffer from
Uruguay (Diptera: Ceratopogonidae)
Maria Luiza Felippe-Bauer,  Gustavo R Spinelli *
Departamento de Entomologia, Instituto Oswaldo Cruz, Av. Brasil 4365, 21045-900  Rio de Janeiro, RJ, Brasil
*Instituto de Limnología “Dr. Raúl A. Ringuelet”, Casilla de Correo 712, 1900 La Plata, Argentina
A new species of Monohelea Kieffer, M. uruguayensis, is described and illustrated from a male
specimen from Uruguay.
Key words: Neotropical predaceous midge - Monohelea uruguayensis sp.n. - Uruguay
Studying material from light trap collection
made by one of us (GRS) in the Department of
Artigas, Uruguay, we found a male of an
undescribed species of Monohelea Kieffer, which
is here described and illustrated.
In our study we used the terminology explained
in Monohelea revisions by Wirth & Williams
(1964) for Northamerican species, Lane & Wirth
(1964) for Neotropical species, and Ratana-
worabhan & Wirth (1972) for Oriental species.
Monohelea uruguayensis Felippe-Bauer &
Spinelli  new species
(Figs 1-7)
40; A.R. (12-15/3-11) 0.96. Palpus uniformly pale
brown; segments compressed.
Thorax: without definite pattern in slide mounted
specimen. Legs (Fig. 3) brown; coxae and trochant-
ers dark brown; hind leg darker; proximal ½ of
femora dark; femora with a narrow, oblique, dark
brown stripe in middle, and a subapical, dorsal dark
brown mark; knees yellowish; hind tibia with a
dorsal dark brown mark basally and a dark brown
stripe in middle; apices of tibiae dark brown; fore
and mid tibiae slightly dark mesally; fore and hind
tibiae with apical spur, longer in fore leg; hind tibial
comb with 5-7 bristles; lengths of trochanters,
femora and tibiae of fore, mid and hind legs in pro-
portion of 12-74-70, 15-87-80, 18-95-90. Tarsi
(Fig. 5) pale, pilose; hind basitarsus darker on
proximal 1/2, with one row of ventral palisade se-
tae; fore and hind basitarsi with one basal and one
apical spine; mid basitarsus with 2 basal and 2 api-
cal spines; apical spines of tarsomeres 2-4 of fore,
mid and hind legs as follows: 1-1-1, 2-2-2, 1-1-1,
basal spines absent; lenghts of fore, mid and hind
tarsomeres in proportion of 38-19-15-11-11, 48-
22-15-11-11, 46-26-19-15-12; fore, mid and hind
tarsal ratios 2.0, 2.1, 1.7; claws paired, equal-sized,
about 0.4 times as long as 5th tarsomere. Wing (Fig.
1): with irregular dark areas and spots, defining
the hieroglyphic pattern ; macrotrichia absent; 2nd
radial cell nearly twice as long as 1st; costal ratio
0.74. Halter missing.
Abdomen: pale brown. Genitalia (Fig. 7): Ninth
sternum spiculate except on basal portion; 9th ter-
gum tapered. Gonocoxite moderately stout, nearly
1.4 as long as basal wide; gonostylus curved in
apical portion, gradually narrowed to apex, about
0.55 times as long as gonocoxite, moderatelly pi-
lose basally. Aedeagus (Fig. 6) triangular, with 2
pointed ventral plates, and slightly sclerotized dor-
sal structure which arises in the middle way to
aedeagus base, and produced beyond the apices of
ventral plates. Parameres (Fig. 4) nearly 1.8 times
as long as aedeagus, separated with trilobed base;
Type locality: Colonia San Gregorio, Artigas, Uru-
guay.
Male Holotype: wing length 1.05 mm; breadth 0.41
mm.
Head: eyes black, bare, widely separated. Antenna
(Fig.2) appearing pale brown in the slide mounted
specimen; pedicel, distal half of flagellomere 12
and flagellomeres 13-15 brown, 4-11 somewhat
barrel-shaped, 12 about 2,5 times as long as wide,
13-15 elongated; flagellomeres with lengths in pro-
portion of 40-13-13-12-12-11-11-11-10-15-38-36-
Fig. 1: wing photograph of Monohelea uruguayensis sp.n.
+Corresponding author. Fax: +55-21-290.9339
Received 4 April 1997
Accepted 23 June 1997
64 New Neotropical Species of Monohelea Kieffer  ML Felippe-Bauer, GR Spinelli
each with a curved, strongly sclerotized, median
hook-shape process which measure 0.62 times as
long as distal portion of the paramere; basal arms
greatly sclerotized; distal portion narrowing gradu-
ally and curved to blunt tip.
Female: unknown.
Distribution: known only from the type locality.
Type: holotype male, Colonia San Gregorio, Dept.
Artigas, Uruguay, 20.X.1987, G. Spinelli col.,
CDC trap. In the collection of the Museo de La
Plata, Argentina.
Etymology: this species is named after the Coun-
try of Uruguay, where the type was collected.
DISCUSSION
Monohelea uruguayensis most closely re-
sembles M. poncai Lane & Wirth by the wing and
legs patterns. It can be readily distinguished from
poncai by the distinct parameres with more stout
apex; the median hook-shaped process is greatly
sclerotized and measure 0.62 times as long as dis-
tal portion of parameres (0.37 in poncai).
ACKNOWLEDGEMENTS
To Genilton José Vieira and Rodrigo Mexas for
assisteance in the wing photos.
REFERENCES
Lane J, Wirth WW 1964. The biting midge genus
Monohelea Kieffer in the Neotropical Region
(Diptera:Ceratopogonidae) Studia Ent 7: 209-236.
Ratanaworabhan NC, Wirth WW 1972. The biting midge
genus Monohelea Kieffer in the Oriental Region
(Diptera:Ceratopogonidae) Pacif Ins 14:439-473.
Wirth WW, Williams RW 1964. New species and records
of North American Monohelea (Diptera:
Ceratopogonidae). Ann Ent Soc Amer 57: 302-310.
Monohelea uruguayensis sp.n., male. Fig. 2: antenna.  Fig. 3: legs (left to right) fore, mid, hind.  Fig. 4: parameres.  Fig. 5: tarsi (left
to right) fore, mid, hind.  Fig. 6: aedeagus.   Fig. 7: gonocoxite and gonostylus.


English

http://sedici.unlp.edu.ar/bitstream/handle/10915/35098/Documento_completo.pdf?sequence=1

A new neotropical species of Monohelea kieffer from Uruguay (Diptera: ceratopogonidae)

Abstract

Similar works

Full text

Available Versions

Servicio de Difusión de la Creación Intelectual

SEDICI - Repositorio de la UNLP