Metaleptobasis panguanae, 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 : 60-62

publication ID 10.11646/zootaxa.3738.1.1

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Metaleptobasis panguanae

sp. nov.

Metaleptobasis panguanae View in CoL new species

Figs. 1v View FIGURE 1 ; 3v View FIGURE 3 ; 4v View FIGURE 4 ; 5v View FIGURE 5 ; 8v View FIGURE 8 ; 9u View FIGURE 9 ; 10v View FIGURE 10 ; 11v View FIGURE 11 ; 12v View FIGURE 12 ; 14g

Etymology. Latinized noun in apposition referring to Panguana, the type locality of this species.

Types. ( all *) Holotype ♂, teneral: PERU, Huánuco Dep., Biological Station Panguana, Río Yuyapichis , E side (9°37'S, 74°57'W), 6–17 iv 2003, H.J. & E.-G. Burmeister leg. [ ZSM, in ETOH]; 1 ♀ paratype, teneral: same data as holotype [ ZSM, in ETOH]; 1 ♀ paratype, teneral missing S7-10, same data [ ZSM]; 1 ♀ paratype, same data but right tributary of Río Pachitea , 28 ix/ 6 x 2000, E.-G. Burmeister, E. Diller, & T. Kothe & W. Schlang leg. [ ZSM]. GoogleMaps

Specimens examined. 1 ♂, 3 ♀.

Description of male holotype (teneral). Labium and rear of head ivory; base of mandible pale yellow with a brown spot; labrum yellow with dark brown line along latero-basal margins; gena pale yellow with a brown spot to the side of antefrons; anteclypeus yellow with a pair of medio-lateral brown spots; postclypeus distal half black, basal half pale yellow; antefrons pale yellow; postfrons and epicranium dark brown with metallic green reflections and with pale spots and stripes as depicted in Fig. 1v i View FIGURE 1 ; eyes grey, color in life unknown; postocular lobes rounded. Thorax. Color as described for genus, with mid-dorsal dark stripe on pterothorax brown with metallic bluish green reflections, wider than inter-laminal sinus, maximum width at 0.30 of pterothoracic length of 0.50 of mesanepisterna width, with sides straight and slightly narrowing posteriorly, extended to mid-length of sides of antealar sinus ( Fig. 3v i View FIGURE 3 ). Pronotum anterior lobe ( Figs. 4v i View FIGURE 4 ; 5v i View FIGURE 5 ) smooth; anterior and middle lobes of pronotum separated dorso-laterally by a groove; anterior area of propleuron with a pronounced rounded antero-ventral tubercle (t.); middle lobe of pronotum smooth; posterior lobe slightly trilobed, with medial lobe pointed medially and lateral lobes narrowing to free angled lateral corners, as long as 0.50 of medial lobe length. Mesanepisternal horns with bases separated, horns as long as 1.2 times mesostigmal plate width, thin, cylindrical, diverging from each other in posterior view, directed antero-dorsally at an angle of 30° with dorsum in lateral view, ending on a bluntly pointed tip. Wings hyaline, veins pale reddish brown; Pt sub-rectangular, with anterior and posterior sides longer than distal side, and membrane pale yellow margined by white; 14 pnx in Fw and Hw. Abdomen. Postmortem background color pale yellow; S1 with a reddish brown dorso-posterior spot; dorsum of S2–7 reddish brown, with a basal pale incomplete ring at anterior edge interrupted by dorso-longitudinal dark line, on S2–4 with a small diffuse pale transverse spot near posterior margin on each side, and on S3–6 dark dorsal color posterior to pale transverse spot extended ventrally along sides of lateral terga; dorsum of S8 reddish brown; dorsum of S9 reddish brown along basal 0.50, pale yellow distally; dorsum of S10 pale yellow; medio-longitudinal carina on sterna brown; caudal appendages pale yellow with distal portion reddish brown and black apex. Genital lobe (g.l.) short, less than 0.50 of anterior hamule height, smoothly curved in lateral view; posterior hamule (p.h.) laminar and large, clearly surpassing ventral margin of genital fossa, slightly shorter than anterior hamule (a.h.), with anterior margin smoothly curved and posterior margin widened into a heel, with tip curved medially gradually and rounded in ventral view; curvature of basal segment of genital ligula marked by a deep concave depression (d.d.), followed by a prominent convex protuberance; genital ligula distal segment pear-shaped, distinctly widened sub-apically, with ratio maximum width/length of 0.60, apex slightly concave, with a narrow ectal fold (e.f., Fig. 8v View FIGURE 8 ). Medial portion of male S10 postero-dorsal margin ( Figs. 10v View FIGURE 10 ; 11v View FIGURE 11 ; 12v View FIGURE 12 ) projected posteriorly, lacking a medial incision, with dorsal prominence represented by an entire transverse sub-apical swelling. Cercus sub-cylindrical, slightly narrowing distally in lateral view ( Fig. 12v View FIGURE 12 ), with a longitudinal medial concavity, in dorsal view ( Fig. 10v View FIGURE 10 ) about straight along medial portion, with tip curved medio-ventrally at an angle of about 80°, narrower than medial third of cercus, and ending on a single point directed medio-ventrally; ratio of cercus length to S10 maximum length in lateral view 1.25; ratio of cercus length to paraproct length in lateral view 0.87; paraproct in lateral view subcylindrical, of uniform width along medial portion and slightly widening distally, in dorsal view with a mediolongitudinal concavity extended almost to tip, tip curved medially at about 95°, ending on a single ventral tooth.

Dimensions. Hw 24.1; abdomen 40.5; total length 47.9.

Female paratype (complete mature female). Head. As in holotype but labrum with dendritic dark marks; pale color of base of mandible, gena, anteclypeus, and antefrons pale greenish yellow; pattern of epicranium as in Fig. 1v View FIGURE 1 ii, with pale areas orange.— Thorax. As in holotype but anterior margin of middle lobe with an antero-lateral laminar tongue-like lobe on each side, longer than wide, with rounded tip and posterior surface slightly concave; corners of lateral lobes of pronotum posterior lobe projected dorso-laterally; dark mid-dorsal stripe black with greenish blue metallic reflections, with sides parallel along basal 0.50, and slightly narrowing posteriorly along distal 0.50; 14 (right) and 13 (left) pnx in Hw; Pt yellowish orange margined with pale yellow.— Abdomen. Color pattern as in holotype but pale background color pale yellow on S1–6, and pale orange on S7–10; posterior margin of S8 sternum with two strong spines, with base bulbous and distal portion needle-shaped, parallel to each other and separated at their bases by a distance shorter that their individual width, as long as 0.66 of S9 and 0.33 of ovipositor external valve, extending along ventro-lateral margin of ovipositor external valve ( Fig. 9u i View FIGURE 9 ); ovipositor reaching level between tip of paraproct and tip of cercus; caudal appendages and ovipositor external valves pale orange; stylus dark reddish brown.

Variation in paratypes (teneral). Color pattern with pale areas pale yellow, and dark areas as in described female; spines on posterior margin of S8 sternum as long as about 0.50 of S9 ( Fig. 9u View FIGURE 9 ii); ovipositor reaching level of tip of paraproct.

Dimensions. Females (n 3): Hw 23.9 ± 0.2 [23.8–24.1]; abdomen (n 2) 38.2 ± 0.4 [37.9–38.5]; total length (n 2) 45.3 ± 0.4 [45–45.6].

Diagnosis. Among species with large laminar male posterior hamule clearly surpassing ventral margin of genital fossa in lateral view and posterior margin of female S8 sternum with denticles, spines, or processes, M. panguanae shares anterior portion of propleuron with a prominent rounded tubercle and male posterior hamule not surpassing anterior hamule ventrally only with M. gabrielae , M. gibbosa , M. guillermoi , and M. mauffrayi , and posterior margin of female sternum S8 with two strong straight sub-cylindrical spines separated at base and oriented ventro-laterally to ovipositor only with M. gabrielae ( Figs. 9j, u View FIGURE 9 ); in the other species of this group anterior portion of propleuron lacks a prominent rounded tubercle, male posterior hamule is as high or slightly higher than anterior hamule ( Figs. 8g, k–l, r, t, w View FIGURE 8 , ac), and posterior margin of female sternum S8 has denticles or small spines, a trifid projection, or bifid projection with prongs arising from a common base ( Figs. 9g, k–l, q, t, v View FIGURE 9 , ab). It differs from M. gibbosa , M. guillermoi , and M. mauffrayi by distal segment of male genital ligula pear-shaped and posterior margin of male posterior hamule widened into a heel ( Figs. 8w View FIGURE 8 ; vs. distal segment of male genital ligula subrectangular and posterior margin smoothly curved; Figs. 8k–l View FIGURE 8 ), and anterior portion of middle lobe of female pronotum with ear-like lobes, directed latero-posteriorly and longer than wide ( Figs. 4v View FIGURE 4 ii; 5v ii; vs. smooth or with ear-lobes upright or oriented dorso-ventrally, Figs. k ii; 4l ii; 5l ii), and further from M. gibbosa by male posterior margin of S10 with a medio-dorsal posterior projection ( Figs. 10v View FIGURE 10 ; 11v View FIGURE 11 ; 12v View FIGURE 12 ; vs. lacking a medio-dorsal posterior projection in M. gibbosa , Figs. 10k View FIGURE 10 ; 11k View FIGURE 11 ; 12k View FIGURE 12 ) and lateral margin of female anterior lobe of pronotum not projected ventrally ( Figs. 4v View FIGURE 4 ii; 5v ii; projected ventro-laterally in M. gibbosa , Figs. 4k View FIGURE 4 ii; 5k ii), and from M. guillermoi by male paraproct with a single ventral tooth at apex (s.t., Figs. 10v View FIGURE 10 ; 11v View FIGURE 11 ; paraproct ending on a distal carina with dorsal and ventral teeth in M. guillermoi , te., Figs. 10k View FIGURE 10 ; 11k View FIGURE 11 ). The male of M. panguanae differs from M. gabrielae by distal portion of cercus about as wide as medial third width ( Figs. 10v View FIGURE 10 ; vs. wider than medial third, Fig. 10j View FIGURE 10 ), and the female by ventro-lateral spines on posterior margin of sternum S8 separated at their bases by a distance shorter that their individual width ( Fig. 9u View FIGURE 9 ; separated at their bases by a distance greater that their individual width in M. gabrielae , Fig. 9j View FIGURE 9 ).

All known females are dimorphic in development of mesanepisternal horns and shape of pronotum posterior lobe.

Habitat. Forests near rivers.

Distribution. Huánuco Dep. in Peru ( Fig. 14g).


Bavarian State Collection of Zoology

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