Amauromelpia ussu, Fernandes & Grazia, 1998

Amauromelpia ussu sp. n.

( Figs. 1 View Fig -5,10- 12,16, 18, 19)

Etymology. From tupy language; ussu = big.

Holotype male. BRAZIL. Amazonas: Janauacá , 29.VH. 1978, WBenson col. ( DZUP). Paratypes. COSTA RICA. Guanacaste: Las Cañas, Taboga , 10mt, 19, 20.III. 1965 (AMN1-1). FRENCH GUYANA. Cayenne , 1850, D. Jekel col., Spinolals collection ( MRSN). BRAZIL. Amazonas: same data as holotype, 1 d‘ ( MZSP), 1 d‘, 2Q ( UFRG); Igarapé Belém , near Rio Solimões about 70 km East of Leticia (Colombia), 10", V. 1970, B. Malkin col.(A1\/11\IH); Médio Purüs , 19, 17.X. 1979, J. Campbell col. ( INPA); Manaus, Puraquequara , 19, 6- 9. V 11 I.199l, C. S. Motta, EA. Peralta & B.R. Teles col. ( FUAM); Benjamin Constant , 19, H. l 962, A. Silva col. ( MZSP); Parintins , 3Q, VIII.1935, G. V. Vrebemburg col. (BMNI-I); Pará: Rio Parú , 1Q, V'11.1952, J.C. M. Carvalho col. ( QBUM), Prainha , 1d, 6.1.1920, D. Mendes col. ( UFRG), 1d, same data ( USNM), 19, same data ( LUND); Santarém, 1Q, VIH. 1936, Worontzow col. ( FIOC), Gurupaiti, 19, 16- 17.IX. 1930, Holt, Blake &Agostini col. (U SNM). BOLIVIA. Beni: Itenez river at mouth of Baures river, 19, 1X-X. 1964, J.K. Bouseman & J. Lussenhop col. ( AMNH).

Body length 7.6-9.6. Abdominal width 4.6-5.6 (fig. 1). Head length 1.5 -2.0. Head width 1.9-2.1. Pronotal length 1.9-2.3. Pronotal Width 4.5 -5.3. Scutellal length 2.9-3.5. Scutellal width 2.9-3.4. Tylus slightly longer than jugae (in two specimens of the sample tylus little shorter than jugae). Outer lateral margin of jugae anteriorly convergent. Punctures of head regularly distributed except for the tylus that is almost impunctate. Antero-lateral margins of pronotum almost rectilinear. Its anterior half slightly crenulated. Corium densely, uniformly punctured.

Pygophore. Diaphragma at each side of segment X with an excavation delimited by a dark-castaneous carena (figs. 2-5). Processus capitati reduced in relation to A. miri , with diameter almost half the aedeagus length. Processus conjunctivae 1 straight and stouter than in A. miri (figs. 10- 12).

Gonocoxites 8 uniformly tumid; posterior border convex. Posterior border of laterotergites 8 just surpassing apices of laterotergites 9 inner postero-lateral angle obtuse. Apices of laterotergites 9 not surpassing transverse band uniting laterotergites 8 dorsally (fig. 16). Gonocoxites 9 with turgid lateral areas; arms reach base of laterotergites 9. Secondary thickening of gonapophyses 9 large, partially hiding chitinellipsen (fig. 18). Ductus receptaculi (dr) extremely long (fig. 19), wound before and after vesicular area (va). Annular crests (aac, pac) little developed. Pars intermedialis (pi) with a narrow sclerotized ring at base. Capsula seminalis globose, shorter than pars intermedialis.

Distribution. Costa Rica: Guanacaste; French Guyana; Brazil: Amazonas, Pará; Bolivia: Beni.