Description of the larvae of three species of Laccophilus Leach and comments on the phylogenetic relationships of the Laccophilinae (Coleoptera: Dytiscidae) Author Michat, Mariano C. text Zootaxa 2008 1922 47 61 journal article 10.5281/zenodo.184741 abd27f14-0192-4987-bddf-6dccb8d6700d 1175-5326 184741 Laccophilus testudo Régimbart ( Figs. 4 , 7 , 10, 16 , 21 , 23 , Table 1 ) Distribution . This species is known from Brazil , and within Argentina from Catamarca, Córdoba, San Luis and Tucumán Provinces ( Trémouilles 1998 ). Source of material . Eight specimens of instar I were used for the description. Larvae were collected in association with adults at the following locality: Argentina , Córdoba Province, Altas Cumbres road, Las Suelas River, 4-I-1992 . Diagnosis . Color of cephalic capsule as in Fig. 7 (instar I). Head width = 0.50–0.52 mm (instar I) ( Table 1 ). Cephalic capsule subovate, with a faint neck constriction (instar I) ( Fig. 4 ). Distal third of ventrointernal margin of MN without denticles (instar I). Legs more densely covered with minute slender spinulae (instar I). Seta AN3 located ventrally (instar I) ( Fig. 10 ). Setae MX 5 and MX 6 straight (instar I) ( Fig. 16 ). Seta FE5 elongate on meso- and metaFE (instar I) ( Fig. 21 ). Seta AB11 elongate (instar I) ( Fig. 23 ). Measurements and ratios that characterize body shape are shown in Table 1 . Description of color . Instar I . Cephalic capsule testaceous except for one large light brown macula centrally and one light brown macula laterally on each ocular area ( Fig. 7 ); head appendages testaceous, MN slightly darker; thoracic and abdominal sclerites testaceous, eighth abdominal segment slightly darker; membranous parts white to testaceous; legs testaceous; U testaceous to light brown.