Drepanoneura tennesseni, Ellenrieder, Natalia Von & Garrison, Rosser W., 2008

Ellenrieder, Natalia Von & Garrison, Rosser W., 2008, Drepanoneura gen. nov. for Epipleoneura letitia and Protoneura peruviensis, with descriptions of eight new Protoneuridae from South America (Odonata: Protoneuridae), Zootaxa 1842, pp. 1-34 : 26-28

publication ID	https://doi.org/ 10.5281/zenodo.183222
DOI	https://doi.org/10.5281/zenodo.6231954
persistent identifier	https://treatment.plazi.org/id/038087FC-FFC2-491B-FF66-D1AB70A4FDAE
treatment provided by	Plazi
scientific name	Drepanoneura tennesseni
status	sp. nov.

Treatment

Drepanoneura tennesseni View in CoL sp. nov.

Figures 2 View FIGURE 2 n–o, 9, 20, 27h–30h, 36j, 37

Etymology. We name this species tennesseni (noun in the genitive case) in honor of our good friend and colleague Kenneth J. Tennessen, who first collected this species and recognized it as different from D. peruviensis , in recognition of his contributions to the knowledge of New World Odonata and his friendship and assistance.

Specimens examined. Total 45 ɗ, 6 Ψ.— Holotype ɗ: Ecuador, Napo Province, Río Chinchipino, E of Jatún Sacha, 27.7 km E of Puerto Napo (01°04'24''S, 77°35'12''W, 400 m), 13 vii 1996, leg. K.J. Tennessen (FSCA). Paratypes: Ecuador, Sucumbíos Province: 2 ɗ, Santa Cecilia, Río Aguarico (00°05'06''S, 76°59'33''W, 458 m), 25/ 31 iii 1969, leg. P.M. & P.J. Spangler (USNM); 1 ɗ, Limoncocha, Río Playaco (00°24'S, 76°36'W, 243 m), 22 viii 1980, leg. K.W. Knopf (RWG). Orellana Province: 1 ɗ, 1 Ψ, stream 8.5 km E of Loreto (00°37'06''S, 77°17'42''W, 400 m), 14 xi 1997, leg. K.J. Tennessen (KJT). Napo Province: 1 ɗ, Río Jatún Yacu (01°01'S, 77°50'W, 700 m), xii 1934, leg. W. Clarke-Macintyre (UMMZ); 1 ɗ, same data (RWG); 1 ɗ, side branch of Río Sinde, 5.3 km E of Puerto Napo on Jatún Sacha Road (01°03'S, 77°47'W, 522 m), 15 vi 1995, leg. K.J. Tennessen (KJT); 1 ɗ, same data but 13 vii 1996, leg. K.J. Tennessen (KJT); 1 ɗ, same data (RWG); 1 ɗ, 1 Ψ, same data but 12 xi 1997, leg. J.J. Daigle (RWG); 6 ɗ, same data but leg. B. Mauffray (FSCA); 2 ɗ, 1 Ψ, same data (RWG); 1 ɗ, same data but 6 km E of hwy 45 on Jatún Sacha road, 15 vi 1995 (FSCA); 1 ɗ, same data but leg. K.J. Tennessen (KJT); 4 ɗ, same data but 12 xi 1997 (KJT); 2 ɗ, same data but leg. T.W. Donnelly (TWD); 1 ɗ, same data (RWG); 1 ɗ, same data but 11.2 km E of hwy 45 on Jatún Sacha Road, RíoTiyuyacu, 13 xi 1997, leg. B. Mauffray (FSCA); 1 ɗ, 1 Ψ, same data as holotype but 22 vii 1996 (KJT); 1 ɗ, same data but 15 vi 1995 (KJT); 2 ɗ, same data but 13 xi 1997 (KJT); 1 ɗ, 1 Ψ, same data but leg. T.W. Donnelly (TWD); 1 ɗ, same data (RWG); 2 ɗ, Río Anzu, Hacienda Ila (01°12'S, 77°50'W, 700 m), 18 xii 1937, leg. W. Clarke-Macintyre (UMMZ); 1 ɗ, same data (RWG). Pastaza Province: 3 ɗ, 1 Ψ, Río Sandalias, 5 km S Puyo (01°30'01''S, 77°57'08''W, 700 m), 11 xi 1997, leg. K.J. Tennessen (KJT); 1 ɗ, same data (RWG); 2 ɗ, same data but leg. B. Mauffray (FSCA); 1 ɗ, same data but leg. T.W. Donnelly (TWD).

Male holotype. Head. Labium, labrum except medio-basal black spot, anteclypeus, and second antennal segment pale yellow; base of mandibles, genae, ventral half of antefrons, and triangular spot on anterior surface of antennifer pale blue, remainder of head black.

Thorax. Prothorax, mesepisternum, mesepimeron, and stripe along dorsal margin of metapleural suture black with metallic green and copper reflections; metepisternum, metepimeron, and pterothoracic venter pale yellow; a short yellow humeral stripe and spot at posterior end of suture (as in Fig. 2 View FIGURE 2 n); coxae and trochanters yellow; femora black with yellow base and stripe at outer distal fifth; tibiae yellow with black base and apex; tarsi and pretarsi yellow with black apices; 4 spurs on metafemora, 6–7 on metatibiae. Hw 5.5 times as long as wide; 12 Px in right Fw, 13 in left Fw, 10 Px in both Hw; MP reaching wing margin slightly distal to vein descending from subnodus; IR2 arising at vein descending from subnodus in Fw, slightly distal to it in Hw; IR2 and RP 3 separated by a short crossvein one cell posterior to their origin; RP 2 beginning closer to Px 5 in Fw and to Px 3 in Hw; pt pale brown with marginal yellow hairline, shorter than underlying cell, with costal side slightly shorter than posterior side.

Abdomen. Dorso-laterally black with metallic reflections except for narrow yellow bands interrupted medio-dorsally by black on base of S3–7; latero-ventral portion of terga and sterna pale brown to yellow. Apex of genital ligula with a deep u-shaped cleft ( Fig. 20 View FIGURES 13 – 20 a) with long and broad latero-distal lobes curved medially ( Figs. 20 View FIGURES 13 – 20 b–c). Dorso-posterior margin of S10 not projected posteriorly ( Figs. 27 View FIGURE 27 h–28h). Ventral branch of cercus as long as base of cercus, in lateral view flat, wide, and truncate apically (as in Fig. 28 View FIGURE 28 h), in posterior view aligned with inner margin of cercus at base and diverging distally from ventral branch of opposite cercus (as in Fig. 30 View FIGURE 30 h). Paraproct truncate ( Fig. 28 View FIGURE 28 h).

Dimensions. Total length 33.1 mm; abdomen length 28.3 mm; Hw 17.4 mm.

Paratypes. Paratypes are similar to holotype but vary as follows: some specimens with femora entirely brown; 5–6 spurs on metatibiae; Hw 5.7 times as long as wide; 10–13 Px in Fw, and 8–11 Px in Hw. Posterior margin of female pronotum is trilobate, with a medio-dorsal triangular projection, and laterally with a posteriorly directed ventro-lateral digitiform projection ( Fig. 9 View FIGURES 3 – 10 ). The sub-basal plate of ovipositor has a concave dorsal margin and slightly convex ventral margin ( Fig. 36 View FIGURE 36 j).

Dimensions. Males (n= 10): total length 33.1–36.0 mm [mean 34 mm; SD 1]; abdomen 27.4–31.0 mm [mean 29.1 mm; SD 0.9]; Hw 17.0– 19.2 mm [mean 17.7 mm; SD 0.7]. Females (n=6): total length 31.8–32.8 mm [mean 32.3 mm; SD 0.4]; abdomen 26.9–27.7 mm [mean 27.3 mm; SD 0.3]; Hw 18.0– 20.1 mm [mean 18.6 mm; SD 0.7].

Diagnosis. Male of D. tennesseni is unique by having the ventral branch of cercus in lateral view wide, laminar, and truncate apically ( Fig. 28 View FIGURE 28 h). Female is unique by its posterior margin of pronotum with a mediodorsal triangular projection and having only one pair of ventro-lateral digitiform processes ( Fig. 9 View FIGURES 3 – 10 ); see under D. loutoni for further diagnosis.

Biology. Adults were collected at rivers.

Distribution. Ecuador, from Sucumbíos to Napo Provinces ( Fig. 37 View FIGURE 37 ).