Buenoa truxali Nieser

Barbosa, Julianna Freires & Nessimian, Jorge Luiz, 2013, The genus Buenoa Kirkaldy, 1904 (Hemiptera: Heteroptera: Nepomorpha: Notonectidae) in northern Brazil: inventory, new records, and new species, Zootaxa 3694 (2), pp. 101-130 : 116-117

Buenoa truxali Nieser

Fig. 53–56

Buenoa truxali Nieser, 1968: 128 [Type localities: Carolinakreek; Sarakreek; and Afobaka; Types in Leiden Museum ( Netherlands); Truxal F. S. Collection (Los Angeles County – U.S.A.); and Nieser N. Collection]; Nieser (1969): 97 [ Trinidad and Tobago]; Nieser (1970): 87 [Survey: South America; record: Brazil]; Nieser (1975): 195 [Record: Suriname]; Nieser and Alkins-Koo (1991): 36 [Note: Trinidad]; Pereira and Melo (2007): 645 [Key to Nepomorpha in Central Amazonia, Brazil]; Heckman (2011): 486 [Key to Buenoa of South America]; Moreira et al. (2011): 55 [Check-list of Brazil].

Comments. Only the macropterous form of this species is known, and is easily recognized by its body color being predominantly brown and the internal margin of the fore tibia being acutely projected at apex ( Fig. 55 ).

The general appearance of B. truxali resembles B. tibialis because of the color, the approximate body length, and the synthlipsis being narrow, shorter than one-half of the vertex width. Buenoa truxali can be recognized by the internal margin of the fore femur being rounded near the base and with its apex being broad ( Fig. 54 ); the apex of the fore tibia is acute ( Fig. 55 ); and the stridulatory teeth of the fore tibia is wide at extremities and shorter at the median region of the stridulatory comb ( Fig. 54 ). In Buenoa tibialis the internal margin of the fore femur is straight near the base and the apex is comparatively narrow ( Fig. 51 ); the apex of the fore tibia is rounded (e.g. Fig. 9 ); and the stridulatory teeth are of similar size ( Fig. 51 ). Furthermore, in B. tibialis the mid-tibia are enlarged at the median region of the external margin (e.g. Fig. 10 ), and the hind femur is sinuous with a line of short spines on its inner surface (e.g. Fig. 11 ). Both features are absent in B. truxali . The female of both species can be differentiated by the expansion at the mid-tibia and by the shape of the hind femur of B. tibialis .

Material. BRAZIL: Estado do Rondônia, Município de Ariquemes, Rio Formoso, tributário do Jaciparaná, igarapé (Ig. 15:05) [10.388ºS / 64.617ºW], 14.VIII.1985 (V. Py-Daniel & L. S. Aquino), det. J. F. Barbosa: 6 m and 1 f macropterous (DZRJ); Estado do Amazonas, Município de Barcelos, Serra do Aracá, base, igarapé da Anta, poça em rocha, laje, 152m [0.87913ºN / 63.45395ºW], 03.VIII.2009 (U. G. Neiss): 4 m and 5 f macropterous (DZRJ); Serra do Aracá, acima do acampamento, igarapé da Cobra, [poças em pedra], 157 m [0.87617ºN / 63.45100ºW], 29.VII.2009 (N. Ferreira Jr.): 1 m and 4 f macropterous (INPA); Acampamento base, poça com folhiço, 157 m [0.87617ºN / 63.45100ºW], 05.VIII.2009 (N. Ferreira Jr.): 1 m and 1 f macropterous (INPA); Município de Presidente Figueiredo, Sítio do Seu José [2.01807ºS / 59.82380ºW], 21.I.2009 (P. V. Cruz): 1 m and 2 f macropterous (DZRJ); Estado do Pará, Município de São Miguel do Guamá, igarapé Arinteua [1.6ºS / 47.4ºW], 19.X.1987 (R. Lima): 1 m macropterous (MPEG).

Figures

FIGURES 50 – 62. 50 – 52. Buenoa tibialis Truxal. 50, Lateral view of male rostrum with rostral prong shorter than third rostral segment. 51, Ventral view of male fore leg with stridulatory area on femur and slightly dissimilar teeth on tibia; 52, Claspers. 53 – 56. Buenoa truxali Nieser. 53, Lateral view of male rostrum with rostral prong as long about third rostral segment; 54, Ventral view of male fore leg with stridulatory area on femur, anterior margin of fore tibia acutely projected at apex and dissimilar teeth; 55, Detail of apex of fore tibia acutely projected; 56, Claspers. 57 – 59. Buenoa unguis Truxal. 57, Lateral view of male rostrum with rostral prong shorter than third rostral segment; 58, Ventral view of male fore leg without stridulatory area on femur, dissimilar teeth on tibia, and tarsus swollen with claws hooked; 59, Claspers. 60 – 62. Buenoa amnigenoidea Nieser. 60, Lateral view of male rostrum with rostral prong longer than third rostral segment; 61, Ventral view of male fore leg with a projection on trochanter, without stridulatory area on femur and dissimilar teeth on tibia; 62, Claspers.

FIGURES 1 – 12. 1 – 4. Buenoa sp. 1, Ventral view of head with frons narrow; 2, Ventral view of head with frons wide; 3, Lateral view of rostrum with measures used; 4, Ventral view of male fore femur with measures used. flt, femur length; fwd, femur width; lbm, labrum; rpl, rostral prong length; tls, tylus; trl, third rostral segment length; trs, third rostral segment. 5 – 6. Buenoa communis Truxal. 5, Lateral view of male rostrum with rostral prong slightly longer than third rostral segment; 6, Ventral view of male fore leg with stridulatory area on fore femur and dissimilar stridulatory teeth on tibia. 7 – 12. Buenoa deplanatylus sp. nov. 7, Lateral view of male rostrum with rostral prong shorter than third rostral segment; 8, Ventral view of male fore leg without stridulatory area on femur, internal margin of tibia bluntly projected, and with dissimilar stridulatory teeth; 9, Dorsal view of fore tibia with apex bluntly projected; 10, external margin of mid-tibia with dilatation at median region; 11, Ventral view of hind femur sinuous with a line of short spines; 12, Claspers.