Coenosia argentifrons (Malloch, 1934)
publication ID |
https://dx.doi.org/10.3897/asp.81.e104969 |
publication LSID |
lsid:zoobank.org:pub:8C3E7D06-3B25-4842-9F28-A76926D4A741 |
persistent identifier |
https://treatment.plazi.org/id/1D2BB185-8886-56A2-8AF2-36D1F9C5F992 |
treatment provided by |
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scientific name |
Coenosia argentifrons (Malloch, 1934) |
status |
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Coenosia argentifrons (Malloch, 1934) View in CoL
Male.
Thorax: (Fig. 13A, C View Figure 13 ). Chaetotaxy: dorsocentrals 1+3, eaDC is less than one fifth of the aDC. Katepisternum with 2-3 setulae. Abdomen: (Fig. 13D View Figure 13 ). Grey with sub-triangular lateral dark-brown marks on tergites 3-5. Tergite 6 poorly visible in dorsal view. Sternite 5 with similar wide and length, apical margin concave with “V” shape; setae long on all the plate (Fig. 13E View Figure 13 ). Terminalia: Cercus, curved in lateral view, keels placed from distal to apical margin, apical margin straight. Surstyli longer than broad, straight (Fig. 13F, G View Figure 13 ). Hypandrium tubular longer than wide, distal extreme exposing the phallapodema. Aedeagus with pregt developed; pgt developed; epiphalus slightly sclerotized, and distiph tubular, and slightly sclerotized at base, and without fine hair on ventral surface (Fig. 13G, H View Figure 13 ). - Female: Unknown.
Type material.
Holotype. Male; BMNH [pinned, glued on card, in good condition]. Original labels: "♂ [handwritten] / Holo- / type [printed]" on white circular paper, red frame; "Argentina: / Terr. Rio Negro. / F.& M. Edwards / B.M. 1927-63." printed on white paper; "Bariloche: / 25-28.x.1926." printed on white paper; " Austrocoenosia / Austrocoenosia argentifrons / Type [handwritten] / det. JRMALLOCH [printed]" on white paper, black frame. https://data.nhm.ac.uk/object/52fe9b69-4be6-4b8b-b54c-5683508ac9d9/1678924800000
Additional material examined.
ARGENTINA - Chubut province • 81 males; PNLA, Cabana La Cascada ; -42.888499, -71.592376; 532 m a.s.l.; Feb 2013; Olea, Mulieri & Patitucci leg.; Malaise trap; MACN GoogleMaps ; • 6 males; PNLA, Lago Verde ; -42.717506, -71.725197; 539 m a.s.l.; 24 Oct 2014; Patitucci leg.; MACN GoogleMaps • 13 males; PNLP, Gendarmería; -42.097468, -71.681953; 200 m a.s.l.; 07-11 Jan 2012; Mulieri & Patitucci leg.; Malaise trap; MACN GoogleMaps ; • 1 male; PNLP, Intendencia ; -42.085077, -71.614662; 12 Jan 2011; Mulieri & Patitucci leg.; MACN GoogleMaps • 1 male; PNLP, La Playita ; -42.099032, -71.607425; 205 m a.s.l.; 09 Jan 2012; Patitucci leg.; MACN GoogleMaps • 1 male; PNLP, Rio Azul ; -42.0916, -71.6155; 17 Jan 2011; Mulieri leg.; MACN GoogleMaps • 3 males, same locality; 13 Jan 2012; -42.0908, -71.6247; Mulieri & Patitucci leg.; MACN GoogleMaps . - Neuquén province • 1 male; ABM, -38.845457, -71.093002; 1400 m a.s.l.; Jan 2013; Mulieri & Patitucci leg.; MACN GoogleMaps • 3 males; ALE; -36.816253, -71.081845; 1502 m a.s.l.; 12 Feb 2018; Mulieri & Patitucci leg.; MACN • 2 males; AVD, Aguas Calientes ; -36.678063, -70.606343; 1760 m a.s.l.; 13 Feb 2018; Patitucci leg.; MACN GoogleMaps • 3 males; Las Ovejas ; -36.992243, -70.749499; 1260 m a.s.l.; 13 Feb 2018, Patitucci & Compagnucci leg.; MACN GoogleMaps • 7 males; Pampa Lonco Luan, Ruta 13; -38.897919, -70.890376; 1522 m a.s.l.; 09 Feb 2018; Patitucci leg.; MACN GoogleMaps • 1 male; Primeros Pinos ; -38.891693, -70.652192, 08 Feb 2018; Patitucci leg.; MACN GoogleMaps 1 male; PNL, Laguna Pudu-Pudu ; -40.364956, -71.468841; 1000 m a.s.l.; Feb 2013; Mulieri leg.; MACN GoogleMaps • 8 males; PNL, Ñorquinco; -39.146931, -71.232717; 1070 m a.s.l.; 09 Jan 2013; Olea, Mulieri & Patitucci leg.; Malaise trap; MACN GoogleMaps ; • 2 males; PNL, Seccional Bandurrias ; -40.144240, -71.342986; 864 m a.s.l.; Feb 2013; Mulieri & Patitucci leg.; Malaise trap; MACN GoogleMaps • 1 male; San Martín de los Andes, Truran Kura ; 18 Oct 1986, Gentilli leg.; IFML • 1 male; Villa Pehuenia ; -38.884694, -71.166337; 1170 m a.s.l.; Feb 2018, Patitucci leg.; MACN GoogleMaps . - Río Negro province • 17 males; PNNH, Mallin Playa Negra ; -41.357809, -71.571683; 797 m a.s.l.; 19 Jan-05 Feb 2009; Garré & Montes de Oca leg.; MLP; Malaise GoogleMaps . CHILE - Región de Coquimbo • 2 males; Valle dos Piuquenes, -30.4333, -70.4167; 7-12 Feb 1964; Peña leg.; MNRJ GoogleMaps . - Región Metropolitana de Santiago • 1 male; Quebrada de La Plata , La Rinconada; 25-29 Dec 1966; Stange leg.; IFML .
Distribution (Fig. 27A).
ARGENTINA: Chubut (new record), Neuquén (new record), Río Negro. CHILE: R. de La Araucanía, R. de Coquimbo, R. Metropolitana de Santiago (new record).
Remarks.
Malloch (1934) described C. argentifrons from several specimens from Argentina and Chile. This species can be distinguished from its congeners by the striking silver front (Fig. 13B View Figure 13 ). Later, Couri and Nuñez (2001) provided a complete redescription with details of male terminalia, and observed, for the first time, longitudinal median keels in the cercus. Our observations also showed this particular structure (keels) in all the species of the C. argentifrons group.
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