Lestes demarcoi, Lencioni & Neiss & Dutra & Furieri & Juen & Batista & Vilela, 2021

Lencioni, F. A. A., Neiss, U. G., Dutra, S. L., Furieri, K. S., Juen, L., Batista, J. D. & Vilela, Diogo S., 2021, Synopsis of Lestes from Brazil with description of Lestes demarcoi sp. nov (Zygoptera: Lestidae), Zootaxa 4990 (3), pp. 511-541: 524-525

publication ID

https://doi.org/10.11646/zootaxa.4990.3.4

publication LSID

lsid:zoobank.org:pub:0719C7D3-E84F-44B2-BD67-3BB61DFD7B6B

DOI

http://doi.org/10.5281/zenodo.5027022

persistent identifier

http://treatment.plazi.org/id/03FF87F3-7637-FF93-FF60-DA0C01037384

treatment provided by

Plazi

scientific name

Lestes demarcoi
status

sp. nov.

Lestes demarcoi   sp. nov. Lencioni & Neiss

Fig. 14 View FIGURE 14 (♂ —App), Fig. 26 View FIGURE 26 (♂ —habitus), Fig. 34 View FIGURE 34 (♀ —habitus), Fig. 35 View FIGURE 35 (Head), Fig. 36 View FIGURE 36 (Thorax), Fig. 37 View FIGURE 37 (H— ♀ S8–S10), Fig. 38 View FIGURE 38 (H— ♀ basal plate), Fig. 40 View FIGURE 40 (N— ♀ pectoral color pattern), Fig. 41 View FIGURE 41 (Penis).

Holotype. ♂ ( UFPA, NC 4725), Brazil: Amazonas State : Manaus ; Reserva Adolpho Ducke, puddle with leaves, Acará trail, collected in tandem with the allotype, 02º55’46”S & 59º58’22”W, 62 m. a.s.l., 13–IV–2009, U.G. Neiss leg. GoogleMaps  

Paratype. 1 ♂ ( FAAL, NC 4324); Brazil: Amazonas State: Manaus, Acamp. Colosso, Paulo De Marco Jr. leg.  

Allotype ♀ ( UFPA), same data as holotype. GoogleMaps  

Etymology. We named this species in honor of Prof. Dr. Paulo De Marco Júnior, professor at the Universidade Federal de Goiás, friend and encourager of the work of all authors, and mainly for his dedication to science in the last four decades.

Description of holotype. Head. Labrum and anteclypeus sky blue, genae and outer surface of mandible greenish–blue, postclypeus dark brown to black, epicranium anterior 2/3 (up to the level of lateral ocellus) black with metallic green reflections, posterior 1/3 reddish–brown ( Fig. 35A View FIGURE 35 ), rear of head pale yellow, antennae: scape, ventral half of pedicel and flagellum brown, dorsal half of pedicel black ( Fig. 35A View FIGURE 35 ). Labium and maxillae pale yellow.

Thorax. Prothorax brown, with two pale blue spots on each side ( Fig. 35A View FIGURE 35 ); pterothorax: middorsal carina brown, followed by a brown middorsal stripe which is followed by a black with green metallic reflections stripe, which is followed by a narrow brown stripe followed by a broad pale blue stripe limited ventrally by the mesopleural suture; metepisternum brown, metepimeron, metinfraepisternum pale blue ( Fig. 36A View FIGURE 36 ). Legs: coxae pale blue, external surface of femora, tarsi and tarsal claws black, external surface of tibiae and internal surface of femora and tibiae pale.

Abdomen. S1–S8 dorsally black with the exception of basal 2/3 of S1 blue, a narrow pale medial line in S2 and a pale basal annulus in S2–8, bluish laterally, S9 dark brown dorso–laterally with 2 pale dots in each side, S10 dark brown. Penis as in Fig. 41 View FIGURE 41 . Appendages black.

Measurements (in mm). Total length (incl. apps) 44: abdomen (incl. apps) 35, hindwing 22, cerci 2.00, paraprocts 0.8.

Description of allotype. Head. Labrum sky blue, genae and outer surface of mandible greenish–blue, anteclypeus dark blue, postclypeus dark brown to black, epicranium anterior 2/3 (up to the level of lateral ocellus) black with metallic green reflections, posterior 1/3 reddish brown ( Fig. 35B View FIGURE 35 ), rear of head pale, antennae: scape, ventral 3/5 of pedicel pale, 2/5 dorsal of pedicel and flagellum brown, ( Fig. 35B View FIGURE 35 ). Labium and maxillae pale.

Thorax. Prothorax and thorax as in holotype ( Fig. 36B View FIGURE 36 ). Legs: coxae pale blue, external surface of femora pale with a fine black longitudinal line, tibiae pale, tarsi and tarsal claws black, internal surface of femora and tibiae pale.

Abdomen. S1–8 dorsally dark brown to black with the exception of basal 1/3 of S1 blue, a narrow pale basal annulus in S2–8, S1–8 bluish laterally, S3–6 the dark dorsal area expanded laterally near the apex, in S7 the dark dorsal area expanded laterally in both extremities, S9–10 dark brown. Valves of ovipositor brown and cerci black.

Measurements (in mm). Total length (incl. apps) 42: abdomen 33, hindwing 23.

Differential diagnosis. The easiest character to separate all Brazilian species from Lestes demarcoi   is, the male’s cerci. Using this character, males of the new species form a cohesive group with L. falcifer   and L. pictus   , but in L. demarcoi   the cercus is much longer than the length of S10, compared with the other two species.

The paraproct of L. demarcoi   is shorter than half the length of the cercus, while in the other two species is longer. In mediodorsal view, the apical portion of the cercus of L. demarcoi   is ovoid while in the other two is finger–like.

We suggest caution in determining Lestes   females when they are collected not associated with males and we suggest the joint use of pectoral color patterns ( Fig. 39 View FIGURE 39 ) with the shape of the basal plates of the ovipositor ( Fig. 38 View FIGURE 38 ) for it.

The female of the new species belongs, together with L. minutus   , in a group where the posterior and ventral sides of the basal plate of ovipositor are divided in two sections each. Lestes demarcoi   differs from L. minutus   in having the posterior section of the ventral side smaller than the anterior section.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Odonata

Family

Lestidae

Genus

Lestes