Metaleptobasis gibbosa Tennessen, 2012

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 : 41-42

publication ID

https://dx.doi.org/10.11646/zootaxa.3738.1.1

publication LSID

lsid:zoobank.org:pub:77D1A6F6-C320-442B-AF31-83324E5EAF3B

persistent identifier

https://treatment.plazi.org/id/03E187ED-661E-FF91-D7A8-FC0EE09FFB14

treatment provided by

Felipe

scientific name

Metaleptobasis gibbosa Tennessen, 2012
status

 

Metaleptobasis gibbosa Tennessen, 2012

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

Metaleptobasis gibbosa Tennessen, 2012: 88–90 , figs. 1–13 (description of ♂ ♀, illustrations of ♂ head, pterothorax, mesanepisternal horn, pretarsal claw, S1, S10, genital ligula, and ♀ pronotum, mesanepisternum, S8, and S8–10).

Types. Holotype ♂: ECUADOR, Pastaza Prov., forest wetlands, Los Copales , between Mera and Shell (1°29'30''S, 78°04'19''W, 1,070 m), 22 ix 2005, KJT leg. [ FSCA]; 1 ♀ allotype *: same but 20 ix 2005 [ FSCA]; 1 ♂ paratype *: same data as holotype but J.J. Daigle [ FSCA]; 1 ♂ paratype *: same data as holotype but W.F. Mauffray leg. [ FSCA]. GoogleMaps

Specimens examined. Total: 2 ♂, 1 ♀: 2 ♂ paratypes, 1 ♀ allotype.

Characterization. Head. Labrum mostly pale; black on head dorsum extensive; postocular lobes rounded ( Fig. 1k View FIGURE 1 ). Thorax. Lateral margin of pronotum anterior lobe not projected in male ( Figs. 4k i View FIGURE 4 ; 5k i View FIGURE 5 ), in female projected ventrally forming a denticulated ridge (d.r.) ending on a rounded tip apressed against anterior tubercle (t.) on propleuron ( Figs. 4k View FIGURE 4 ii;5k ii); propleuron with prominent rounded tubercle on anterior area in both male and female (t.); anterior and middle lobes of pronotum separated dorso-laterally by a groove; anterior margin of middle lobe of pronotum smooth; pronotum posterior lobe entire, smoothly convex, with lateral lobes rounded in male ( Figs. 4k i View FIGURE 4 ; 5k i View FIGURE 5 ), and fused at an acute angle to middle lobe in female ( Figs. 4k i View FIGURE 4 ; 5k i View FIGURE 5 ); mesanepisternal horns in male well developed, about as long as 1.2 times mesostigmal plate width, thin, oriented antero-dorsally at an angle of 45° with dorsum, with bluntly pointed tips and bases separated, in female vestigial, about 0.20 of mesostigmal plate width; mid-dorsal dark stripe as wide as about 0.50 of mesanepisterna, with sides slightly narrowing anteriorly and posteriorly ( Fig. 3k View FIGURE 3 ); Pt short rectangular, with posterior side about as long as anterior side and slightly longer than distal side, to squarish, with all sides about equal. Abdomen. Male genital lobe short, less than 0.50 of anterior hamule height, smoothly curved; male posterior hamule laminar and large, clearly surpassing ventral margin of genital fossa in lateral view but shorter than anterior hamule, sickle-shaped, with posterior side smoothly convex, tip bluntly pointed ( Fig. 8k View FIGURE 8 ); curvature of basal segment of genital ligula marked by a deep concave depression, followed by a prominent convex protuberance; genital ligula distal segment subrectangular, apex transverse with a narrow ectal fold (e.f., Fig. 8k View FIGURE 8 ); posterior margin of female S8 sternum with six small denticles ( Fig. 9k View FIGURE 9 ); distal end of ovipositor reaching tip of cercus; male S10 postero-dorsal margin about transverse ( Fig. 10k View FIGURE 10 ), lacking a medio-posterior projection, lacking a medial incision, with dorsal prominence divided into two lateral portions (pr., Fig. 11k View FIGURE 11 ); male cercus in dorsal view curved medially at apex, about straight along medial third and uniform in width; tip pointed medially gradually, ending on a single point directed medioventrally; ratio of male cercus length to S10 maximum length in lateral view 1.0–1.1; ratio of male cercus length to paraproct length in lateral view 0.65–0.80; male paraproct in lateral view ( Fig. 12k View FIGURE 12 ) about straight, slightly narrowing distally; tip gradually curved medially, ending on single point directed medio-ventrally.

Dimensions. Males (n 2): Hw 23.5 ± 0.99 [22.7–24.1]; abdomen 38.75 ± 2.47 [37–40.5]; total length 46.3 ± 2.97 [44.2–48.4]. Females (n 1): Hw 25.8; abdomen 40.6; total length 48.4.

Diagnosis. Among the species with large laminar male posterior hamule clearly surpassing ventral margin of genital fossa in lateral view and with posterior margin of female S8 sternum with denticles, spines, or processes, M. gibbosa shares male posterior hamule not surpassing anterior hamule ventrally and propleuron with an anterior prominent rounded tubercle only with M. gabrielae , M. guillermoi , M. mauffrayi , and M. panguanae . Among them, it shares only with M. guillermoi and M. mauffrayi the distal segment of male genital ligula sub-rectangular and female sternum S8 with denticles or small spines (distal segment of male genital ligula pear-shaped and female S8 with strong spines or processes in the other six species). The male of M. gibbosa differs from M. guillermoi and M. mauffrayi by posterior margin of S10 lacking a medio-dorsal posterior projection and postero-medial prominence low and divided into two lateral portions (pr., Figs. 10k View FIGURE 10 ; 11k View FIGURE 11 ), vs. with a medio-dorsal projection (which can be folded ventrally and hidden in lateral and dorsal views depending on preservation, but is always present and visible in medio-dorsal view, Figs. 10l View FIGURE 10 ; 11l, r View FIGURE 11 ) and postero-medial prominence tall, as high as medio-dorsal posterior projection length, and undivided in the other two species. Female differs from those two species by having the lateral margin of the anterior lobe projected ventrally, forming a prominent denticulated ridge (d.r.) ending on a rounded tip, middle-lobe of pronotum smooth, and lateral margins of posterior lobe of pronotum fused to middle lobe ( Figs. 4k View FIGURE 4 ii; 5k ii; vs. lateral margins of anterior lobe not projected, middle lobe of pronotum with antero-dorsal ear-like lobes (e-l.), and lateral margins of posterior lobe of pronotum free ( Figs. 4 l View FIGURE 4 ii; 5l ii, r ii).

The only known female of M. gibbosa differs from male in shape of both pronotal hind lobe and of mesanepisternal horns.

Habitat. Type specimens found near a small, partially shaded seepage pool at the edge of the forest at Los Copales, with very little water. The few individuals detected perched low on stems but when disturbed flew high toward and into overhanging bushes ( Tennessen 2012).

Distribution. Pastaza Prov. in Ecuador ( Fig. 14g).

FSCA

Florida State Collection of Arthropods, The Museum of Entomology

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Odonata

Family

Coenagrionidae

Genus

Metaleptobasis

Loc

Metaleptobasis gibbosa Tennessen, 2012

Ellenrieder, Natalia Von 2013
2013
Loc

Metaleptobasis gibbosa

Tennessen, K. J. 2012: 90
2012