Metaleptobasis paludicola, Ellenrieder, 2013

Ellenrieder, Natalia Von, 2013, <p> <strong> A revision of <em> Metaleptobasis </ em> Calvert (Odonata: Coenagrionidae) with seven synonymies and the description of eighteen new species from South America </ strong> </ p>, Zootaxa 3738 (1), pp. 1-155: 59-60

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Metaleptobasis paludicola

new species

Metaleptobasis paludicola   new species

Figs. 1u View FIGURE 1 ; 3u View FIGURE 3 ; 4u View FIGURE 4 ; 5u View FIGURE 5 ; 8u View FIGURE 8 ; 9s View FIGURE 9 ; 10u View FIGURE 10 ; 11u View FIGURE 11 ; 12u View FIGURE 12 ; 13i View FIGURE 13 ; 14e

Metaleptobasis amazonica   nec Sjöstedt, 1918 — Garrison & von Ellenrieder (2009: 48; mention).— Misidentification.

Etymology. From Latin paludicola   (adjective), meaning 'dwelling in swamps or marshes', referring to the habitat at which the holotype was found.

Types. ( all *) Holotype ♂: PERU, Loreto Dep., Tamshiyacu-Tahuayo Reserve, swamp (4°23'49''S, 73°14'57''W), 27 ii 2009, TF leg. [ RMNH]; 1 ♂ paratype: same as holotype but [ TF]; 1 ♀ paratype: same as holotype but (4°23'40''S, 73°14'56''W) [ TF]; 1 ♂ paratype: same as holotype but forest interior (4°23'40''S, 73°14'56''W) [ TF]; 1 ♂ paratype: same as holotype but higher restinga, forest along stream (4°20'37''S, 73°13'45''W), 17 ii 2010, TF leg. [ TF]; 1 ♂, 2 ♀ paratypes: same as holotype but (4°23'47''S, 73°15'13''W), 23 ii 2010 [ TF]; 1 ♂ paratype: same as holotype but (4°23'49''S, 73°14'57''W), 27 ii 2010 [ TF]; 1 ♀ paratype: PERU, Loreto dep., Iquitos {3°46'S, 73°15'W, 106 m}, iii 1936, G.G. Klug leg. [ BMNH]; 1 ♂ paratype: BRAZIL, Amazonas State, Igarapé Tarumanzinho, 46 km N of Manaus {2°35'S, 60°2'W, 64 m}, 6 ii 1979, O.S. Flint, Jr. leg. [ USNM]; 1 ♂ paratype: same data but [ RWG]; 1 ♂ paratype: Manaus , Lugones, Igarapé do Mariano {2°57'44''S, 60°06'20''W, 11 m}, xi 1959, Elias leg. [ MNRJ]; 1 ♂ paratype: Manaus , campus of Federal University {3°5'57"S 59°58'5"W}, 25 xi 1984, H. Lima leg. [ INPA]. GoogleMaps  

Specimens examined. Total: 10 ♂, 4 ♀.

Description of male holotype. Head. Labium, base of mandible, and rear of head ivory; labrum pale yellowish blue with dark brown line along latero-basal margins; eyes brown, in life bright green with a bright orange oval spot along margin of postocular lobes ( Fig. 13i i View FIGURE 13 ); remainder of head pale bluish brown, with a pair of medio-lateral diffuse brown spots on anteclypeus, a dark brown stripe along anterior margin of postclypeus, black line over epicranial suture, black spots on epicranium as depicted in Fig. 1u i View FIGURE 1 , and posterior margin of postocular region orange; postocular lobes slightly angled. Thorax. Color as for genus, with mid-dorsal dark stripe black with metallic greenish-blue reflections, wider than inter-laminal sinus at anterior end, as wide as 0.33 of mesepisterna width, parallel sided and slightly narrowing at posterior end ( Fig. 3u i View FIGURE 3 ). Anterior lobe of pronotum ( Figs. 4u i View FIGURE 4 ; 5u i View FIGURE 5 ) smooth; anterior and middle lobes of pronotum separated dorso-laterally by a fissure (f.); anterior area of propleuron with a low rounded tubercle (t.) and a c-shaped crest (c.); middle lobe of pronotum with anterior margin smooth; pronotum posterior lobe trilobed, with medial lobe smoothly convex, and lateral lobes entire and smoothly convex, slightly shorter than medial lobe. Mesanepisternal horns with bases separated, well developed, slightly shorter than 2 times mesostigmal plate width, of medium thickness and parallel sided at basal portion, narrowing to bluntly pointed apex and diverging along distal portion, directed antero-dorsally at an angle of 70° with dorsum in lateral view. Wings hyaline, veins dark brown; Pt sub-rectangular, with anterior and posterior sides longer than distal side, with membrane reddish brown margined by pale yellow; 14 (right) and 13 (left) pnx in Fw, 12 in Hw. Abdomen. Postmortem background color pale yellow on S1–2, 9–10, pale grayish blue on S3–8 (pale greenish blue in life, as in Fig. 13i i View FIGURE 13 ); S1 with a brown dorso-posterior spot and ventral carina of lateral tergum margined with black; S2–7 with dark reddish-brown dorsum, with a basal pale incomplete ring on S2–7 at anterior edge interrupted by dorso-longitudinal dark line, and with a small diffuse pale transverse spot near posterior margin on each side, on S3–6 dark dorsal color posterior to pale transverse spot extended ventrally along sides of lateral terga; dorsum of S10 dark reddish brown; medio-longitudinal carina on sterna black; cercus reddish brown, with apex black; paraproct base and inner surface pale, remainder dark brown becoming black at apex. Genital lobe short, less than 0.50 of anterior hamule height, smoothly curved; posterior hamule digit-like and small, shortly surpassing ventral margin of genital fossa in lateral view; curvature of basal segment of genital ligula marked by a slight concave depression; genital ligula distal segment pear-shaped, with ratio maximum width/length of 0.68, with apex transverse with a narrow ectal fold (e.f., Fig. 8u i View FIGURE 8 ), at rest not surrounding sides of basal segment. Medial portion of S10 postero-dorsal margin ( Figs. 10u i View FIGURE 10 ; 11u i View FIGURE 11 ; 12u i View FIGURE 12 ) projected posteriorly, with a small incision, with sides close together and bent ventrally, thickened forming dorsal prominence curved surrounding incision. Cercus in dorsal view ( Fig. 10u i View FIGURE 10 ) sub-cylindrical, gradually narrowing distally, slightly curved medially; tip pointed, slightly depressed dorso-ventrally, ending on single incurved tooth directed medio-ventrally; ratio of cercus length to S10 maximum length in lateral view 1.05; ratio of cercus length to paraproct length in lateral view 0.57; paraproct with base sub-cylindrical, distal 0.66 compressed with an inner concavity, of uniform width along medial third in lateral view, slightly widened sub-apically.

Dimensions. Hw 21.7; abdomen 37.9; total length 45.6.

Female paratype (collected in the vicinity of holotype, Fig. 13i View FIGURE 13 ii). Head. As in holotype but black areas on epicranium less extensive (as in Fig. 1u View FIGURE 1 vi).— Thorax. As in holotype but medial lobe of pronotum posterior lobe with medial lobe bluntly pointed and narrower (as in Fig. 4u v View FIGURE 4 ); mesanepisternal horns parallel sided along basal half and slightly converging along apical portion ( Fig. 3u View FIGURE 3 iv); 13 pnx in Fw, 12 in Hw; Pt pale yellow becoming pale brown towards center.— Abdomen. Color pattern as in holotype but ventral carina of lateral tergum S1–2 margined with black; dark dorsum on S1–3 with metallic green reflections, on S4–10 dark reddish brown, not reaching posterior margin with dorsum pale yellow on posterior 0.25 in S9 and 0.1 in S10; posterior margin of S8 sternum smooth, lacking any denticles, spines, or processes ( Fig. 9s View FIGURE 9 ); external valve of ovipositor pale with dark reddish brown stylus, ovipositor slightly surpassing level of tip of cercus; cercus dark reddish brown, epiproct and paraproct pale yellow.

Variation in paratypes. Head. As in holotype but labrum with branching pattern of dark lines in some specimens, black areas on epicranium more or less extensive ( Figs. 1u i View FIGURE 1 –vii), clypeus, frons, and epicranium pale bluish brown to pale greenish blue; postocular lobes slightly angled to rounded. Thorax. As in holotype but medial lobe of pronotum posterior lobe bluntly pointed ( Fig. 4u View FIGURE 4 ii) to slightly bilobed ( Fig. 4u View FIGURE 4 iii); mesanepisternal horns as long as 1.5–2 of mesostigmal plate width, forming an angle of 45°–75° with dorsum, parallel sided, slightly converging to slightly diverging along distal portion, with bases joined by a low ridge to separated ( Figs. 4u View FIGURE 4 ; 5u View FIGURE 5 ); Pt membrane from pale yellow with pale brown center to entirely reddish brown; pnx Fw 11–15; pnx Hw 10–13. Abdomen. Black areas on dorsum of abdominal segments as in holotype to dark reddish brown with S8–10 dark area limited to half of dorsum width; medio-longitudinal carina on sterna black to pale brown; male cercus ( Figs. 10u View FIGURE 10 ; 11u View FIGURE 11 ; 12u View FIGURE 12 ) as in holotype to pale brown with black tip; teneral female with dark areas of S1–7 with bluish-green metallic reflections, of S8–10 pale brown; pale areas, appendages, and ovipositor stylus pale yellow.

Dimensions. Males (n 9, excluding holotype): Hw 22 ± 0.5 [21.3–22.7]; abdomen 38.7 ± 1.3 [36–40.4]; total length 46.4 ± 1.3 [43.8–48.4]. Females (n 4): Hw 24.4 ± 0.4 [24–24.7]; abdomen 37.8 ± 0.7 [37.2–38.6]; total length 45.4 ± 0.8 [44.7–46.2].

Diagnosis. Metaleptobasis paludicola   shares only with M. brysonima   and M. furcifera   the following combination of characters: small digit-like male posterior hamule, smooth female posterior margin of S8 sternum lacking any denticles, spines, or processes, black on head dorsum covering about half to most of dorsal surface, labrum mostly pale, anterior margin of middle lobe of pronotum smooth, anterior portion of propleuron with a low rounded tubercle, and mesanepisternal horns sub-cylindrical. It differs from them by female pronotum trilobed with smoothly convex medial lobe ( Figs. 4u v View FIGURE 4 –vi; slightly trilobed to unlobed always with a medial incision in M. brysonima   and M. furcifera   , Figs. 4e v View FIGURE 4 –xiii; 4i iii–vi), dark mid-dorsal pterothoracic stripe as wide as 0.33 of mesanepisterna width ( Figs. 3u View FIGURE 3 ; as wide as 0.50 of mesanepisterna width in M. brysonima   and M. furcifera   , Figs. 3e, i View FIGURE 3 ), and male S 10 in lateral view with a well developed medial prominence on postero-dorsal margin ( Figs. 11u View FIGURE 11 ; 12u View FIGURE 12 ; male S 10 in lateral view flat, lacking a medial prominence on postero-dorsal margin in M. brysonima   and M. furcifera   , Figs. 11e, i View FIGURE 11 ; 12e, i View FIGURE 12 ).

All known females of M. paludicola   share the shape of posterior lobe of pronotum and length and orientation of mesanepisternal horns with males, and in both males and females these characters show considerable plasticity ( Figs. 4u View FIGURE 4 ; 5u View FIGURE 5 ).

Remarks. Metaleptobasis paludicola   displays a wide range of extension of dark areas on dorsum of head, with black stripes covering about half of dorsum to almost entire dorsum ( Fig. 1u i View FIGURE 1 –vii). Since this range of variability is found among specimens from the same area (Reserva Tamshiyacu) which do not differ otherwise sharing the same structural characters, I consider this to be part of the intraspecific variability within this species.

Habitat. Forest near first or third order streams of shallow water enclosed by forest canopy, flooded forest, and forest swamps.

Distribution. Loreto Dep. in Peru and Amazonas State in Brazil ( Fig. 14e).


National Museum of Natural History, Naturalis


Department of Mineral Resources


Smithsonian Institution, National Museum of Natural History


Museu Nacional/Universidade Federal de Rio de Janeiro


Instituto Nacional de Pesquisas da Amazonia














Metaleptobasis paludicola

Ellenrieder, Natalia Von 2013

Metaleptobasis amazonica

Garrison, R. W. & von Ellenrieder, N. 2009: 48