Juenagrion nanae Lencioni 2023, spec. nov.
Creators: name: Lencioni, F. A. A.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Odonata
Coenagrionidae
Juenagrion
Juenagrion nanae

description: Juenagrion nanae spec. nov.
Fig. 11 (♁—prothorax), Fig. 12 (♁—app. lateral view), Fig. 13 (♁—app. posterior view), Fig. 14 (♁—app.), Fig. 15A (♀ —hind lobe of prothorax), Fig. 16 (♀ —prothorax), Fig. 17 (penis—ectal view), Fig. 18 (penis—lateral view), Fig. 19 (♁, ♀ —habitus), Fig. 20 (map— type locality), Fig. 21 (photo of type locality); Fig. 22 (photo of second collection site).
Holotype. ♁ (NC 4636), Brazil: Mato Grosso: Querencia, córrego transição, collected in tandem with the allotype, 13° 03′ 35″ S & 52° 12′ 03″ W, 19.xii.2007, Leg. Juen, L. & Cabette, H.S.R.
Paratypes. 7♁♁, 1♀: 1♁ (NC 4637), same data as holotype (penis and appendages removed for illustration, all conserved in alcohol); 1♁, l ♀ (NC 4800), Brazil: Tocantins: Araguaína, rio lontra, 7° 12′ 19″ S & 48° 14′ 55″ W, 28.xii.2018, Leg. Julia S. Silva (in tandem); 3♁♁ (NC 4801–4803), Brazil: Tocantins: Araguaína, rio lontra, 7° 12′ 19″ S & 48° 14′ 55″ W, 28.xii.2018, Leg. Julia S. Silva. 1♁ (UFPA), Brazil: Tocantins: Araguaína, rio lontra, 7° 12′ 19″ S & 48° 14′ 55″ W, 28.xii.2018, Leg. Julia S. Silva.; 1♁ (UFNTO), Brazil: Tocantins: Araguaína, rio lontra, 7° 12′ 19″ S & 48° 14′ 55″ W, 28.xii.2018, Leg. Julia S. Silva.
Allotype ♀ (NC 4636) same data as holotype.
Etymology. I named this species nanae (a noun in the genitive case) after Nana, nickname of Mrs. Adriana Marcilio Ponce Pasini (b. 20.i.1970), dearest friend during my youth and who I reencountered after a thirty-year gap.
Description of holotype
Head. Labrum, anteclypeus, postclypeus, genae, outer surface of mandible, postfrons up to frontal suture blue. Area in front of medial ocellus, and two diagonal bands, which connect each lateral ocellus to the base of antenna, brownish. Vertex, occiput and postocular lobes all black except for occipital bar blue (Fig. 19A), antennae: missing. Labium and maxillae pale yellow. Rear of head light blue.
Thorax. Prothorax blue; pterothorax with dorsal 1/3 of mesepisternum black with green reflections, reminder blue, venter of metathorax whitish. Legs: coxae blue, femora pale bluish, tibia, tarsi, and tarsal claws pale.
Wings. hyaline with black venation, pterostigma black, quadrangular, and surmounting one cell; PX 9 in all wings.
Abdomen. S1–S6 laterally and ventrally blue, dorsally brownish, S7–S10 dark brown (almost black).
Measurements (in mm). Total length (incl. apps) 31: abdomen (incl. apps) 25, forewings 16, hindwings 15.
Description of allotype
Head. As in holotype but with a fine blue line in the area of the posterior lobe which is adjacent to the compound eye (Fig. 19B).
Thorax. Prothorax as in holotype but with dorsum brownish; pterothorax as in holotype.
Wings. hyaline with black venation, pterostigma ochraceous, quadrangular and surmounting one cell; PX 9 in LFW, 10 in RFW, 8 in HW.
Abdomen. S1–S6 blue, S7–S10 reddish.
Measurements (in mm). Total length (incl. apps) 33: abdomen 27, forewings 16, hindwings 15.
Variation in paratypes. Similar color pattern in male and female. Males: total body length 28– 31, PX FW 10–11, HW 8. Female: total body length 30, PX FW 10, HW 8.
Diagnosis: Males of J. nanae are easy to distinguish from other species in the genus by the presence of the longitudinal elevated process in the middle of the posterior lobe of prothorax (Fig. 15A–D), absent in the other three species. The female of J. leptocyclia is still unknown, females of J. nanae, J. igapocola and J. selaopyge can be distinguish by the shape of the posterior lobe of prothorax (Fig. 11), in J. nanae the medial part of the posterior lobe is recessed and straight (Fig. 15A), while it is projected and rounded in J. selaopyge (Fig. 15B) and projected and bifurcated in J. igapocola (Fig.15C).
In addition to the original description, I examined specimens of the following species: J. igapocola 1♁— Brazil: Para State, Obidos municipality. Village of Curuai, 2° O′ 44″ S & 55° 18′ 11″ W, 12m asl, 31.i.1971, Leg. unknown (paratype —MNRJ—examined and illustrated in 2005); J. selaopyge 1♁— Venezuela: San Carlos de Rio Negro, 1° 55′ 21″ N & 67° 3′ 45″ W, 7–13.xi.1982, Leg. Chacon, A. & Yepez, G., (paratype —MIZA).
description: Published as part of Lencioni, F. A. A., 2023, Analysis of Telebasis Selys, 1865 - Part I. (Odonata: Coenagrionidae), pp. 500-520 in Zootaxa 5239 (4) on pages 510-514, DOI: 10.11646/zootaxa.5239.4.3, http://zenodo.org/record/7635170