New species of the damselfly genus Argia from Mexico, Central America and Ecuador with an emphasis on Costa Rica (Insecta: Odonata: Coenagrionidae) Garrison, Rosser W. Ellenrieder, Natalia Von Zootaxa 2017 4235 1 1 93 9X235 Garrison & von Ellenrieder Garrison & von Ellenrieder [151,667,658,685] Insecta Coenagrionidae Argia Animalia Odonata 26 27 Arthropoda species schorri sp. nov.   Etymology. Named  schorri(Latinized name) in honor of our friend and colleague Martin Schorr, in recognition of his contributions to our knowledge of Odonatathrough the establishment of the International Dragonfly Fund, which has supported the research of countless odonatologists worldwide, his compilation of the Odonatological Abstract Service, and editing of the IDF-Reports for the past twenty years.   Specimens examined. 6 ♂, 1 ♀.   Types.   Holotype ♂: COSTA RICA,  PuntarenasProv.: 2.8 milesE of Golfito{ 8°39' N, 83°7 W,  35 m},  4 vii 1967, O. S. Flint, Jr. & M. A. Ortiz B.leg. [ USNM].  Paratypes: COSTA RICA,  PuntarenasProv.: 1 ♂, same data as holotype [ USNM];  1 ♂same data as holotype but [RWG];  1 ♂same data as holotype but [ CSCA];  1 ♂, same data as holotype but [ USNM];  2 ♂, 1 ♀,  2 kmNE of Uvita, Finca Carolina, Uvita Tropical Studies Institute, Río Ballenaand small tributaries in primary and secondary forest ( 9°9'47'' N, 83°42'49'' W,  275 m),  15 xi 2010, W. Haberleg. [RWG]. A dark medium-sized species similar in male appendage morphology ( Fig. 162) to  A. popoluca( Figs. 163, 164).   Description of male holotype(colors poorly preserved). Head: Labium pale merging to black at basal half, ante- and postclypeus black, genae and base of mandibles pale, ante- and postfrons and anterior portion of scape pale, remainder of head black with purple postocular spots and small pale spot anterolateral to lateral ocellus; remainder of antennae black, rear of head black except for broad margin bordering eye. Prothorax black with following areas pale: anterior lobe, dorsolateral spot on middle lobe, propleuron except for notopleural suture. Pale areas of pterothorax dark purple, with black middorsal stripe about as wide as pale antehumeral stripe, the latter gradually narrowing dorsally; black humeral stripe extending from base of mesinfraepisternum and connecting narrowly below antealar crest with middorsal stripe above and encompassing a small pale spot just below carina (similar to Fig. 28); interpleural suture with narrow black stripe separating paler areas on side of thorax (as in Fig. 28). Wings hyaline with venation black; pterostigma short, black, surmounting 1 cell in all wings (as in Fig. 125); postnodals Fw 12/12, Hw 11/11; postquadrangular cells Fw 3/3, Hw 3/3; RP2 at Fw 7/7, Hw 5/5. Coxae and trochanters pale washed with black anterior portions of coxae; femora, tibiae, tarsi and armature black. Abdomen (as in Figs. 28, 77) mostly black; S1 with a black basal ring, remainder purple; S1 blue with a narrow irregular black ring basally; S2 pale (purple) above with an irregular black lateral stripe ending just before black annulus, its anterior end connecting as a narrow black ring above, at apical 0.20 sending a narrow triangular offshoot dorsally but connecting above, ventrally with irregular pale stripe; S3–4 black laterally with pale basal ring and middorsal stripe ending at apical 0.20; S5–7 black with incomplete pale basal ring; S8–10 blue dorsally, black laterally (as in Fig. 77); torus pale, appendages black. Genital ligula ( Fig. 142) consisting of a long ridged flagellum, with a pair of entolaterally directed quadrate lobes at base. Torus small, confined to ventral margin of torifer, the latter slightly triangularly concave, its base approximate to the opposite, and both completely overlapping bilobed epiproct ( Fig. 162a, c); cercus ( Fig. 162a, c) about twice as long as wide, rectangular, about subequal to paraproct, its tip slightly concave with a small partially hidden recurved tooth on medioapical margin; paraproct bilobed, its ventral branch much smaller than broadly triangular anteriorly directed dorsal branch ( Fig. 162a, b).  Dimensions. Hw 19.4, abdomen 27, total length 34.4.  Description of female paratype(  CostaRica: PuntarenasProv., 2 kmNE of Uvita, Finca Carolina, Uvita Tropical Studies Institute, Fig. 190). Head similar to male but postocular spot not confluent to eye ( Fig. 51); pro- and pterothorax and S1 as in male but antehumeral stripe brown and pale areas of pterothorax pale green ( Fig. 51); S2 similar to male but with campanulate spot extending to apical 0.40; S3 with a blue basal ring and narrow blue middorsal stripe, apical 0.30 and laterally except for medial pale streak black ( Figs. 51, 101); S4 similar but pale middorsal stripe narrower and pale mediolateral streak reduced; S5–7 black except for pale basal ring; S8 blue dorsally, black laterally; S9 narrowly blue dorsally with an offshoot of blue extending cephalad to medial 0.50, remainder black; S10 and ovipositor black ( Fig. 100). Mesostigmal lobe small, forming a raised recurved planar lobe arising laterally on lateral branch of carina just posterior to medial border of mesostigmal plate ( Fig. 121d, c); lobe thickened when viewed posteriorly ( Fig. 121e); a prominent mesepisternal tubercle medioposteriorly to mesostigmal lobe ( Fig. 121b, c, e).  Variation in paratypes. Little variation was observed in the paratypeseries. The metapleural stripe in two males ( 2 kmNE of Uvita, Fig. 28) is about 0.70 as thick as the humeral stripe. Pterostigma surmounting 1 cell in males and female; postnodals: Fw 12–14 inmales, 13 infemale, Hw 10–11 inmales, 10 infemale; postquadrangular cells Fw 3–5, Hw 3 inmales, Fw 3, Hw 3 infemale; RP2 at Fw 6–8, Hw 5 inmales, Fw 6–7, Hw 4 infemale. Dimensions. ♂: Hw 18.8 ± 0.90 [17.6–20.3], abdomen 25.5 ± 1.11 [24–27], total length 32.7 ± 1.27 [31.1–34.2]; ♀: Hw 20.1, abdomen 25.3, total length 32.8.   Diagnosis. Species unique in the male by diminutive rim-like torus and adjacent torifer completely overlapping epiproct ( Fig. 162a, c), and in the female by the placement of recurved mesostigmal lobe on lateral branch of middorsal carina. In addition, the genital ligula consisting of a long, ridged single flagellum and a pair of entolaterally directed quadrate lobes at base ( Fig. 142) and the shortened pterostigma covering only one cell ( Fig. 125) will easily serve to distinguish this species. The male appendages of  A. schorri( Fig. 162) are superficially similar to those of  A. popoluca( Figs. 163, 164), as well as its color pattern ( Figs. 129; 188, 189). However,  A. popolucadiffers from  A. schorriby its male tori broadly ovate, occupying the ventral half of the torifer and not overlapping the epiproct ( Figs. 163a, c, 164a, c) and by its two long flagella united basally by a common stem, broadened laminate base and lack of a pair of entolaterally directed quadrate lobes at base of genital ligula ( Figs. 143, 144). In the field, male  A. popolucahave smaller postocular spots that are not confluent with the eye, and the pale middorsal stripes are more extensive, often attaining the apical 0.20 of S6 ( Figs. 188, 189). In the female, the mesostigmal lobes occupy the medial 0.50 of the hind margin of the mesostigmal plate, and are large broadly upright foliate structures that are almost approximate. Most females of  A. popolucahave mesostigmal lobes as shown in Fig. 123, but one female (  CostaRica: Braulio Carrillo National Park) has a strongly recurved lobe medially ( Fig. 122c, d, e). It was collected with a male the appendages of which are typical for this species.    Argia popolucais apparently a variable species. Calvert (1902)in his original description mentions four postquadrangular cells in the Fw, and most material we have examined from  Mexicosustains Calvert’s observation. Specimens from farther south generally have only three Fw postquadrangular cells. The extent of the middorsal blue stripe is also variable, extending for most of the dorsum on S3 variably through S7 ( Figs. 188, 189)1.   Remarks. The small series (including holotype) of four males from Golfito was apparently exposed to 1. Garrison et al.(2003)examined the syntypesof  Argia variata Navás, 1935, stating that “…  A. variatais a bona fidespecies in the [ A.]  gerhardi[ Calvert, 1909]/ nigrior[ Calvert, 1909] group.” Further examination of specimens of  A. popolucafrom over its entire range show that South American material previously referable to  A. variatado not significantly differ from Central American material currently going under the name of  A. popoluca. The genital ligula morphology of  A. variatais the same as for Central American specimens, and all specimens differ from species (including typematerial) previously included within the  A. gerhardi/ kokama/ nigriorcomplex. Correspondingly, we consider  Argia variata Navás, 1935, to be a junior synonym of  A. popoluca Calvert, 1902. excessive heat, causing the wing membrane and entire body to become excessively shiny and the colors poorly preserved.  Habitat. Small trickles within primary and secondary forests. On 31 May 2013, we attempted to locate this species at its typelocality ( 2.8 miE of Golfito) but were unsuccessful, probably due to overcast weather and intermittent precipitation. The area consisted of a small shaded stream within shaded forest, and no Odonatawere seen. Specimens have been collected at elevations ranging from about 35 m( 2.8 miE of Golfito) to 275 m( 2 kmNE of Uvita), ranging from July ( 2.8 miE of Golfito) to November ( 2 kmNE of Uvita). Haber noted the following for two males and female collected at Finca Carolina: "[male & female] Perched on shrubs in sunny spot on high bank of tiny trickle down steep hillside" and [male taken in] "Light gap on high bank of tiny forest trickle down steep hillside".   Distribution. Known so far only from the southern Pacific side of  CostaRica, where it is sympatric with its similar-looking congener  A. popoluca( Fig. 170). 1434659042 [199,642,981,1006] Types 26 27 7 1 6 holotype 1434659048 [657,976,981,1006] Costa Rica COSTA RICA 26 27 1 1 holotype 1434659019 1967-07-04 USNM O. S. Flint & Ortiz B. Costa Rica 35 8.65 Golfito 26 27 1 Puntarenas holotype 1434659026 [1138,1432,1018,1042] Costa Rica COSTA RICA 26 27 1 paratype 1434659050 [151,776,1053,1078] USNM Costa Rica COSTA RICA 26 27 1 1 Puntarenas paratype 1434659029 [788,1229,1053,1078] Costa Rica COSTA RICA 26 27 1 1 paratype 1434659043 CSCA Costa Rica COSTA RICA 26 27 1 1 paratype 1434659064 [405,859,1089,1114] USNM Costa Rica COSTA RICA 26 27 1 1 paratype 1434659070 2010-11-15 W. Haber Costa Rica Finca Carolina 275 9.163055 Rio Ballena 21 -83.71361 Uvita Tropical Studies Institute 26 27 3 1 2 paratype