Podonomus quinquesetosus, Siri, Augusto & Donato, Mariano, 2012

Siri, Augusto & Donato, Mariano, 2012, Two new species of Podonomus (Diptera: Chironomidae: Podonominae) of the Brundin’s decarthrus group from Ventania system, Argentina, Zootaxa 3548, pp. 39-54 : 47

Podonomus quinquesetosus sp. n.

Type material. Holotype: pharate male, Argentina, Buenos Aires province, Sierra de la Ventana, Parque Provincial E. Torquinst, in rock pool in the Ventana stream, 38º03’09.0’’S / 62º01’08.8’’W, 782 m a.s.l., collected on 21.v.2011, D-net, M. Donato, A. Siri & F. Spaccesi. Allotype: adult female, same data as holotype but sweep net, M. Donato, A. Siri & F. Spaccesi. Paratypes: 4 pupal exuviae, same data as holotype, but 5.xi.2011; 1 pharate male and 1 pupa, Argentina, Buenos Aires province, Sierra de la Ventana, Parque Provincial E. Torquinst, Ventana stream, 38º03’31.7’’S / 62º01’11.8’’W, 574 m, 5.xi.2011.

Etymology. The specific epithet " quinquesetosus " refers to the characteristic number of five lateral wavy setae in the anal lobe of the pupa.

Diagnostic characters. The species can be separated from the other species of the Brundin’s decarthrus group by the following combination of characters. Male. Eyes hairy; subapical lobe short and rounded; the " x " and " y " setae inserted in the base of the apical lobe; " p " seta inconspicuous. Female. Eyes hairy; antenna with 10 flagellomeres; 3 long and strong apical setae on cercus; postgenital plate long and thin, reaching the apex of the cercus. Pupa. Respiratory atrium of the thoracic horn oval and robust; plastron plate with more or less parallel sides; shagreen practically absent, except for the mid anterior darker border of each abdominal segment with 2–4 rows of very short spines fused by its bases, and AL with short single spines. Dorsal and ventral setae very thin, not surrounded by tubercles. Segment VIII with 6; AL with 5 wavy setae.