Review of the Eriococcidae (Hemiptera: Coccomorpha) infesting Fabaceae in Argentina, with descriptions of three new species of Acanthococcus Signoret Author González, Patricia Author Claps, Lucía E. Author Juárez, Andrea Author Moreno, Diego text Zootaxa 2017 4232 1 41 57 journal article 36547 10.11646/zootaxa.4232.1.3 5363e2a3-ce92-40df-8518-384275ad9570 1175-5326 292749 21D49668-D5AE-48B5-9C92-5C4F06D49F3F Acanthococcus gracielae González & Claps Acanthococcus gracielae González & Claps 2011 : 267 –268. Material examined. Holotype : Argentina , Salta , Río Colorado ( 24°48'0″ S , 62°27'0″ W ), unknown host, 6/XI/ 1993 , M.C.G. Willink col. ( IFML ) . Paratypes : 3 adult females with the same data as the holotype . Additional material examined. Argentina , Tucumán , San Miguel de Tucumán ( 26° 49′ 0″ S , 65° 13′ 0″ W ), on “tatané” Chloroleucon tenuiflorum , -/5/2015, Claps & Moreno col., 2(5); on “churqui” Acacia caven , same date and collector, 2(4) ( IFML ) . Diagnosis . Slide-mounted adult female with abundant dorsal conical setae in transverse lines on abdominal and thoracic segments; symmetrical macrotubular ducts; numerous microtubular ducts of type B on both surfaces; marginal setae undifferentiated from dorsal setae; metacoxa each with approximately 50 pores, 30 on dorsal surface and 20 on ventral surface; anal lobes with 2 ventral setae ( González & Claps 2011 ). Observations. Severe attacks have been noted on urban trees of Chloroleucon tenuiflorum ( Fig. 5 ), an unusual phenomenon among eriococcids in Argentina . Such attacks can damage hosts. Distribution. Argentina , Neotropical region, Chaco subregion, Chaco province .