Lestes forficula Rambur, 1842

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 : 517-518

Lestes forficula Rambur, 1842

Fig. 06 (♂ —App), Fig. 19 (♂ —habitus), Fig. 28 (♀ —habitus), Fig. 37 (B— ♀ S8–S10), Fig. 39 (B— ♀ basal plate), Fig. 40 (F— ♀ pectoral color pattern), Fig. 43 (♂ —live photo).

Etymology: forficula = Latin for small shears, scissors.

Lestes forficula Rambur, 1842: 247 (description of male); Hagen 1861: 68 (description of male and distribution); Selys 1862: 308 (description of male and female, distribution, description of race L. striata ); Kirby 1890: 161 (data on species description and distribution); Calvert 1909: 92 (Key); Jurzitza 1981: 117 (presence in Argentina); Davies & Tobin 1984: 32 (data on publication and distribution); De Marmels 1990: 336 (presence in Venezuela, synonymy with L. striatus Selys, 1862 ); Bridges 1994: (VII) 91 (data on publication, type depository, type locality and references); Belle 1997: 96 , Figs.: 3, 20, 21, 25, 31 (key, data on male and female, illustration thorax in ventral view, appendages in dorsal and lateral views, female S 8–10 in lateral view, pterostigma of right forewing); Lencioni 2005: 93, Fig. 52(A–B) (data on description, data on type locality, data on type deposition, data on distribution, data on larval description, original illustration of appendages in lateral and mediodorsal view); Costa et al. 2006: 60–61, Fig. 23 (appendages dorsal view, key for adult males); Lencioni 2006: 257 (larva, illustrations from Calvert 1928); Blanke 2008: 14 (first record to Espírito Santo); Garrison et al. 2010: 117, Figs.: 501, 515, 519 and 521 (data on species, original illustration of thorax in lateral view, appendages in lateral and dorsal views, female S 8–10 in lateral view); Damaceno et al. 2014: 25 (presence in Espírito Santo, incorrectly marked as first State record); Lencioni 2017: 107–108, Fig. 42A–D , 43A–B , DL-02 (data on description, type locality, type deposition, distribution, and larval description, appendages in lateral, mediodorsal and dorsal views, female S 8–10 in lateral view, male and female habitus, live photo).

Types. Syntypes in IRSNB (not examined) .

Synonyms. Lestes striatus Selys, 1862 ( De Marmels 1990).

Larva described. Yes (by supposition by Calvert 1928).

Material examined. (17 ♂♂ + 6 ♀♀): 1 ♂ Brazil: São Paulo, Rio Claro, Sítio Primavera , 18.ii.1996, F.A.A. Lencioni leg. ; 2 ♂ Brazil: São Paulo, Rio Claro, Sítio Primavera , 20.ii.1996, F.A.A. Lencioni leg. ; 1 ♂ Brazil: São Paulo, Jacareí, Campo Grande , 25.ii.1996, F.A.A. Lencioni leg. ; 3 ♂♂ Brazil: São Paulo, Jacareí, Fazenda Santana do Poço , 04.ix.1996, F. Lencioni leg. ; 1 ♂ Brazil: São Paulo, Jacareí, Fazenda Santana do Poço , 15.ix.1996, F.A.A. Lencioni leg. ; 1 ♂ + 1 ♀ Brazil: São Paulo, Jacareí, Fazenda Santana do Poço , 23.x.1996, (in tandem), F. Lencioni leg. ; 1 ♂ Brazil: São Paulo, São José dos Campos, Univap – Campus Urbanova , 20.xi.2000, F. Lencioni leg. ; 1 ♂ + 1 ♀ Brazil: São Paulo, São José dos Campos, Univap – Campus Urbanova , (in tandem), 29.xi.2000, F. Lencioni leg. ; 1 ♂ + 1 ♀ Brazil: São Paulo, Jacareí, Fazenda Santana do Poço , 12.xii.2000, F. Lencioni leg. ; 3 ♂♂ + 2 ♀♀ Brazil: São Paulo, Rio Claro, Sítio Primavera , 12/02/2002, F.A.A. Lencioni leg. ; 2 ♂♂ + 1 ♀ Brazil: São Paulo, Rio Claro, Sítio Primavera , 22º24’ 33”S & 47º36’44”W, 25–28.ii.2006, F.A.A. Lencioni leg.

Distribution. Brazil (São Paulo, Mato Grosso, Minas Gerais, Roraima), West Indies, Peru, Venezuela, Trinidad, Guyane Française and Argentina (Misiones).

Diagnostic characters. ♂ —Cercus in lateral view: 4/5 basal straight with the apical 1/5 forming almost a right angle, basal spine clearly visible and the semicircular medial expansion visible. Cercus in mediodorsal view: base of cercus with a mesally–directed long spine, medial expansion semicircular with the outer border covered with spines. Paraproct in lateral view: almost the same size of the cercus. Paraproct in dorsal view: long and narrow (less narrow than L. bipupillatus ) with a spoon–like tip.

♀ —Basal plate: species belonging to basal plate group 2 ( Fig. 38 ), with dorsal side twice the length of ventral side, dorsal side with anterior 1/4 slight concave and posterior 3/4 convex. The junction of dorsal side with posterior side forming an acute process directed slightly downward. Posterior and ventral sides subequal ( Fig. 39B ). Pectoral color pattern as Fig. 40F .

Figures

FIGURE 19. Lestes forficula: Male habitus.

FIGURE 23. Lestes pictus: Male habitus.

FIGURE 28. Lestes forficula: Female habitus.

FIGURE 37. Female S8–S10: Lateral view: A—Lestes dichrostigma, B—Lestes forficula, C—Lestes minutus, D—Lestes paulistus, E—Lestes pictus, F—Lestes tricolor, G—Lestes undulatus, H—Lestes demarcoi sp. nov.

FIGURE 38. Female basal plate of ovipositor, with three configurations found in the known Brazilian species of Lestes: 1 (Lestes dichrostigma, Lestes pictus, Lestes tricolor and Lestes undulatus), 2 (Lestes forficula and Lestes paulistus) and 3 (Lestes minutus and Lestes demarcoi sp. nov.). Parts are named as follows: D—dorsal side, A—anterior side, V—ventral side, P—posterior side, PD—dorsal section of posterior side, PV—ventral section of posterior side, AP—Acute process (as defined in Westfall & May (1996)), VA—anterior section of ventral side and VP—posterior section of ventral side.

FIGURE 39. Basal plate of ovipositor (The basal plate was kept in color while the rest was converted to grayscale to facilitate the visualization of the differences between species): A—Lestes dichrostigma, B—Lestes forficula, C—Lestes minutus, D— Lestes paulistus, E—Lestes pictus, F—Lestes tricolor, G—Lestes undulatus, H—Lestes demarcoi sp. nov.

FIGURE 40. Pectoral color pattern: A—Lestes auritus (female), B—Lestes bipupillatus (female), C—Lestes dichrostigma (female), D—Lestes falcifer (male), E—Lestes fernandoi (male), F—Lestes forficula (female), G—Lestes jurzitzai (male), H— Lestes minutus (female), I—Lestes paulistus (female), J—Lestes pictus (female), K—Lestes quadristriatus (male), L—Lestes tricolor (female), M—Lestes undulatus (female), N—Lestes demarcoi sp. nov. (female).

FIGURE 42. Lestes dichrostigma male—São Jose dos Campos—SP (Photo Frederico A.A. Lencioni).

FIGURE 43. Lestes forficula male—Rio Claro—SP (Photo Frederico A.A. Lencioni).