Tuberculobasis inversa ( Selys, 1876 ) Selys, 1876

Machado, Angelo B. M., 2009, Denticulobasis and Tuberculobasis, new genera close to Leptobasis, with description of ten new species (Odonata: Coenagrionidae)., Zootaxa 2108, pp. 1-36 : 22-23

Tuberculobasis inversa ( Selys, 1876) comb. nov.

Figures 31–32 , 49 , 63 , 66–68

Telagrion inversum Selys (1876: 969) ; Kirby (1890: 155).

Leptobasis tuberculata Santos (1961: 171) .

Leptobasis inversum Santos (1965: 9) ; Bridges (1994: VII:119).

Leptobasis inversa Davies & Tobin (1984: 77) ; Garrison (1991: 13); Tsuda (2000: 38); Lencioni (2006: 156).

Specimens examined: Holotype 3. BRASIL, Pará State, Santarém (2º25´S, 54º42´W) (IRSN). 1 3, Amazonas State, Tefé (3º22´S, 64º42´W), XII.1960, Carvalho leg. (A.B.M.M.). 1 Ƥ, PERU, Loreto Department. Explorama Lodge, 50 miles NE of Iquitos on Amazon River at the junction with Yanomano River, 30.VIII.1989, S.W. Dunkle leg (SWD).

Distribution. Brazil, Amazonas, Pará, and Rondônia States. Peru, Loreto Department.

Remarks. Tuberculobasis inversa was described by Selys (1876) based on a single male from Santarém, Pará, Brazil. Santos (1961) described and illustrated both sexes of Leptobasis tuberculata from Porto Velho, Rondônia, Brazil but after examining the holotype of T. inversa synonymized L. tuberculata with L. inversa ( Santos, 1965) . The holotype lacks head and right wings, but color is well preserved. The descriptions made by Selys (1876) and Santos (1961) are adequate. Until recently the only illustrations known for females specimen of T. inversa were those provided by Santos (1961) under L. tuberculata . I had the opportunity to study and provide an illustration of the thoracic structures of a specimen from Peru that agreed well with the specimen described by Santos (1961) especially on the unique shape of the hind prothoracic lobe ( Fig. 49 ). R.W. Garrison identified as T. inversa a male in his collection found in the same month and at the same place where the female illustrated herein had been collected and suggested, and I agree, that it is the female of T. inversa . However, the Peruvian specimen has a pair of small but very evident mesepisternal tubercles that are apparently lacking in the Brazilian specimen described by Santos. I believe these small tubercle might have been overlooked by Santos (1961) as he did with the tubercles of the females of T. costalimai (see Remarks under T. costalimai ). Besides, by its male character T. inversa belongs in the costalimai group in which the known females ( T. costalimai , T. williamsoni ) have tubercles, whereas the known females ( T.mammilaris , T. tirio and T. yanomami ) of the mammilaris group the known females ( T. mammilaris , T. tirio and T. yanomami ) have no tubercles. In the costalimai species group T. inversa can be easily separated from the other species by its subparallel mesepisternal tubercles, with anterior borders connected to mesostigmal plate by a curved plate ( Figs. 31, 32 ).

Figures

FIGURES 25 – 34. Tuberculobasis, male thorax in dorsal and lateral view in T. arara, holotype (25, 26); T. costalimai, holotype (27, 28); T. guarani, holotype (29, 30); T. inversa, holotype (31, 32); T. williamsoni, holotype (33, 34).

FIGURES 47 – 54. Tuberculobasis female thorax, in dorsal view: T. cardinalis, holotype (47); T. costalimai, allotype (48); T. inversa, Peru, Loreto (49); T. mammilaris, Venezuela (50); T. tirio, allotype (51); T. williamsoni, allotype (52); T. yanomami, paratype (53), and in dorso-lateral view: Tuberculobasis sp. 1, Manaus, Amazonas (54) [47 by N. von Ellenrieder; 50, 53 by J. De Marmels].

FIGURES 57 – 65. Tuberculobasis, male appendages in dorsal, lateral, and posterior view: T. arara, holotype (57 – 59); T. costalimai, paratypes (60 – 62); T. guarani, holotype (64, 65), T. inversa holotype in dorsal (63), dorso-lateral (66), and lateral (68) views. T. inversa, Tefé, Amazonas State, in postero-lateral (68) view [66, 67 by R. W. Garrison].