debilipalpis Lutz, 1913: 60 (female). Type locality: Brazil, São Paulo, Sierra da Bocaina. Type material (?). Distr.- Widespread from USA (Maryland, Kentucky, Nebraska south to Lousiana and Florida), Guatemala and Belize to Argentina (Salta: Aguas Blancas, 22°34'S, 64°22'W; El Oculto, 23°06'S, 64°30'W; San Ramón de la Nueva Orán, 23°08'S, 64°20'W. Tucumán: Departamento Famaillá, 27° 3'51.18"S, 65°23'30.10"W; La Montañita, 26°57'34.38"S, 65°23'20.84"W; Sargento Moya, 27°11'S, 65°38'W, 458 m; La Florida, 27°13'S, 65°37'W, 452 m; Capitán Cáceres, 27°11'S, 65°36'W, 414 m. Formosa: Estanislao del Campo, 25° 3'12.50"S, 60°5'38.10"W; El Coatí, 25°43'37.96"S, 59°37'49.22"W; Los Matacos, 25°29'53.59"S, 59°26'26.16"W; Palo Santo, 25°33'48.14"S, 59°20'4.22"W; Formosa city, 26°11'24.06"S, 58° 9'21.77"W. Chaco: Ciervo Petiso, 26°34'51.96"S, 59°37'53.94"W; Charadai, 27°39'16.64"S, 59°51'44.48"W; Colonia Elisa, 26°55'54.34"S, 59°31'5.34"W; Colonias Unidas, 26°41'53.95"S, 59°37'48.32"W; Laguna Limpia, 26°29'43.50"S, 59°40'52.36"W; Las Palmas, 27°3'2.58"S, 58°40'39.76"W; Quitilipi, 26°52'19.21"S, 60°13'16.21"W; Río de Oro, 26°54'45.57"S, 58°46'18.86"W. Misiones: Cataratas del Iguazú, 25°41'4.29"S, 54°26'32.29"W; Barra del Yacuí, 25°50'00''S, 54°09'00''W; río Paranaí, 26°40'33.82"S, 54°49'13.44"W; Corpus, 27°6'22.43"S, 55°31'24.71"W; Posadas, arroyo Zaimán, 27°25'46.64"S, 55°54'8.56"W. Corrientes: Ituzaingó, 27°35'22.76"S, 56°41'25.22"W. Entre Ríos: Ibicuy, 33°44'23.51"S, 59°10'6.53"W. Buenos Aires: isla Martín García, cantera basural, 34°10'56.94"S, 58°15'27.91"W; Ensenada, Reserva Natural Integral Punta Lara, marginal forest, 34º47'21.2''S, 57º59'56.8''W (as lahillei); Berisso, Los Talas, 34°52'16.47''S, 57°51'8.76''W). Refs.: Forattini, 1957: 383; Cavalieri & Chiossone, 1966: 148; Spinelli et al., 1989: 735 (as lahillei); Ronderos & Spinelli, 1995; Ronderos & Spinelli, 1995b; Spinelli & Ronderos, 1997: 304; Ronderos et al., 2003b: 22; Ronderos et al., 2010; Veggiani Aybar et al., 2010: 97; Ronderos et al., 2010: 43; Veggiani Aybar et al., 2011: 1021; Ronderos et al., 2011: 1188; Veggiani Aybar et al., 2012a: 4; Cazorla et al., 2018: 6.
ichesi Ronderos & Spinelli, 1995b: 77. Type locality: Argentina, Misiones, Posadas, arroyo Zaimán, 27°25'46.64"S, 55°54'8.56"W. HT F (MLPA). Other localities for C. ichesi from Argentina cited by Ronderos & Spinelli (1995): Jujuy: PN Calilegua, 23°40'17.58"S, 64°52'0.59"W. Misiones: Montecarlo, 26°34'10.62"S, 54°47'50.59"W;Salto Encantado, 27°05′06″S 54°49′58″W; Posadas, arroyo Mártires, 27°24'26.66"S, 55°57'29.29"W. Corrientes: Bella Vista, 28°30'39.91"S, 59°3'4.46"W; Santa Tecla, 27°36'57.67"S, 56°23'14.66"W; Ituzaingó, 27°35'22.76"S, 56°41'25.22"W; Monte Caseros, 30°15'23.77"S, 57°37'21.10"W; Mocoretá, 30°37'06.63"S, 57°58'31.17"W. Entre Ríos: Gualeguaychú, 33°0'26.40"S, 58°30'2.69"W. Ciudad Autónoma de Buenos Aires, 34°32'18.65"S, 58°27'3.69"W. Buenos Aires: Gonnet, 34°53'20.26"S, 58°1'17.15"W; General Belgrano, 35°45'56.68"S, 58°29'49.90"W.
NEW RECORDS:
Misiones: Paranay, 26°40'33.82"S, 54°49'13.44"W. Buenos Aires: San Nicolás, 33°19'56.49"S, 60°12'16.64"W.
ichesi Ronderos & Spinelli, 1995b: 77. Type locality: Argentina, Misiones, Posadas, arroyo Zaimán. hT F (MLPA). Other localities for C. ichesi from Argentina cited by Ronderos & Spinelli (1995): Jujuy: Parque Nacional Calilegua. Misiones: Montecarlo; Salto Encantado; Posadas, arroyo Mártires. Corrientes: Bella Vista; Santa Tecla; Ituzaingó, Monte Caseros, Mocoretá. Entre Ríos: Gualeguychú. Ciudad Autónoma de Buenos Aires. Buenos Aires: Gonnet; Punta Lara; General Belgrano.
Diagnosis.
A medium-sized species (wing length 0.76-0.95 mm) of the subgenus Haematomyidium Goeldi, 1905, distinguished by the following combination of characters: Eyes separated by a distance equal to one ommatidia! facet. Antenna! sensillar pattern 3, 8-10; flagellar segment 10 subequal or slightly longer than 11. Third palpal segment short and stout, pit deep and rounded; palpal ratio 2.00-2.60. P /H ratio 0.73-0.85. Mandible with 14-17 teeth. Distal pale spot of cell M1 separated from wing margin for a distance equal to its length; macrotrichia present in anal cell and in basal portion of cell M2. Halter brown. Two ovoid, subequal spermathecae, plus a vestigial third and sclerotized ring.
Ronderos et al., (2010) provided the firtst detailed description of larva and pupa with SEM, BCM and PCM microscopy. They were collected to remove water from tree-holes of Salix in Entre Ríos province.