Drepanoneura janirae, 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 : 19-20

publication ID	https://doi.org/ 10.5281/zenodo.183222
DOI	https://doi.org/10.5281/zenodo.6231942
persistent identifier	https://treatment.plazi.org/id/038087FC-FFC9-4913-FF66-D2867705FC4F
treatment provided by	Plazi
scientific name	Drepanoneura janirae
status	sp. nov.

Treatment

Drepanoneura janirae View in CoL sp. nov.

Figures 2 View FIGURE 2 e, 15, 27c–30c, 37

Etymology. We name this species janirae (noun in the genitive case) in honor of our friend and colleague Janira M. Costa, in recognition of her friendship and her contributions to the knowledge of New World Odonata .

Specimens examined. Total 12 ɗ.— Holotype ɗ: Brazil, Rondônia State, Villa Murtinho (10°21'S, 65°19'W, 133 m), 0 4 iv 1922, leg. J.H. Williamson & J.W. Strohm (UMMZ). Paratypes: 1 ɗ, same data as holotype (RWG); 1 ɗ, same data as holotype but 28 iii 1922 (RWG); 3 ɗ, same data but 0 4 iv 1922 (RWG); 1 ɗ, same data but 0 6 iv 1922 (MNRJ). Bolivia, Beni Department: 1 ɗ, Río Beni, Cachuela Esperanza (10°32'S, 65°38'W, 122 m), 10/ 13 iv 1922, leg. J.H. Williamson & J.W. Strohm (UMMZ); 4 ɗ, same data (RWG).

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

Thorax. Prothorax, mesepisternum, mesepimeron, and metepisternum posteriorly to metastigma black with metallic green and copper reflections; narrow faint yellow stripe along ventral margin of humeral suture, metepimeron, and pterothoracic venter pale yellow (as in Fig. 2 View FIGURE 2 e); coxae and trochanters yellow; femora yellow with four faint black bands; tibiae, tarsi, and pretarsi yellow with black apices; 4 spurs on metafemora, 6 on metatibiae. Hw 5.4 times as long as wide; 11 Px in Fw, 10 Px in right Hw, 9 in left Hw; MP reaching wing margin at vein descending from subnodus; IR2 arising slightly distal to vein descending from subnodus; 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 as long as posterior side.

Abdomen. Dorso-laterally black with metallic reflections except for narrow pale brown 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 moderate v-shaped cleft (as in Fig. 15 View FIGURES 13 – 20 a) with short and broad latero-distal lobes curved medially (as in Fig. 15 View FIGURES 13 – 20 c). Dorso-posterior margin of S10 projected posteriorly ( Figs. 27 View FIGURE 27 c–28c). Ventral branch of cercus shorter than base of cercus, approximately cylindrical ( Figs. 29 View FIGURE 29 c–30c); in posterior view aligned with inner margin of cercus and diverging from ventral branch of opposite cercus at tip ( Fig. 30 View FIGURE 30 c). Paraproct pointed ( Fig. 28 View FIGURE 28 c).

Dimensions. Total length 33 mm; abdomen length 28.4 mm; Hw 17.3 mm.

Paratypes. Paratypes are similar to holotype but vary as follows: 4–6 spurs on metafemora, 5–7 on metatibiae; Hw 5.2–5.6 times as long as wide; 11–12 Px in Fw, 7–10 Px in Hw; IR2 arising at vein descending from subnodus or slightly distal to it; IR2 and RP 3 in contact one cell posterior to their origin or separated by a short crossvein; RP 2 beginning closer to Px 4–5 in Fw and to Px 3–4 in Hw; and pt shorter than or as long as underlying cell with costal side shorter to longer than posterior side. Dark color on thoracic dorsum extends to metapleural suture or to mid-height of metepisternum, and narrow pale brown bands are interrupted mediodorsally by black on base of abdominal S3–6 or S3–7. Female unknown.

Dimensions. Males (n= 10): total length 31.1–33.0 mm [mean 32.0 mm; SD 0.7]; abdomen 26.6–28.5 mm [mean 27.5 mm; SD 0.6]; Hw 17.1–18.3 mm [mean 17.6 mm; SD 0.4].

Diagnosis. This species is unique by the ventral branch of cercus shorter than the base of cercus. It further differs from D. flinti , D.muzoni , and D. peruviensis by the ventral branch of male cercus being aligned with cercus inner margin and diverging from branch of opposite cercus at tip ( Fig. 30 View FIGURE 30 c); from D. donnellyi , D. letitia , D. loutoni , and D. tennesseni by the postero-dorsal margin of male S10 markedly projected posteriorly ( Fig. 28 View FIGURE 28 c); and further from D. loutoni and D. tennesseni by its pointed paraproct ( Fig. 28 View FIGURE 28 c).