Argia adamsi Calvert, 1902

Garrison, Rosser W. & Ellenrieder, Natalia Von, 2018, Damselflies of the genus Argia (Odonata: Coenagrionidae) from Ecuador with descriptions of five new species, Zootaxa 4470 (1), pp. 1-69 : 9-11

Argia adamsi Calvert, 1902

Figs. 10–12 (head, thorax, S1– 3 ♂), 36–42 (S7– 10 ♂), 43, 44 (S1– 5 ♂), 70, 71 (mesostigmal plates ♀), 90, 91 (genital ligula), 104, 105 (appendages ♂), 137 (map), 143, 144 (photo).

Argia tinctipennis: Kirby 1899: 371 (material from Panama misidentified).

Argia tinctipennis: Calvert 1902: 83 (material from Panama identified by Kirby as A. tinctipennis thought to be A. indicatrix Calvert, 1902 ).

Argia adamsi Calvert1902: 80 , 81, Tab. IV. figs. 35, 35 a. (description of ♂, Panama); Calvert in Calvert & Hagen 1902: 105 (catalog); Calvert 1907: 367, Tab. X. fig. 5. (further notes on ♂, ♀ described, Costa Rica); Calvert 1909: 134 (♀ compared with A. oculata ); Ris 1918: 105–107 (key, further notes, Panama); Soukup 1954: 11 ( Peru); Rácenis 1959: 474 ( Peru); Kimmins 1970: 182 (Holotype type data listed); May 1979: 16 ( Panama); Paulson 1982: 252 ( Costa Rica, Panama, South America); Dunkle 1991: 132 ( Honduras, range extension); Donnelly 1992: 83 ( Panama); Butt 1995: 96 (southeastern Peru); Louton et al. 1996: 438 ( Peru); Ramírez et al. 2000: 249 ( Costa Rica); Förster 2001: 11, 54, 58 (list, key); Esquivel 2005: 286 ( Costa Rica); Westfall & May 2006: 165, 175 (figs.); Heckman 2008: 370, 381 (key); Garrison et al. 2010: 213 (listed); Pérez-Gutiérrez & Palacino-Rodriquez 2011: 212 ( Colombia); Garrison & von Ellenrieder 2013: 15, 16 ( Costa Rica, app illustrated).

Argia (Chalcargia) adamsi: Kennedy 1920: 85 (placed in new subgenus)

Argia huallaga Fraser 1946: 450 , 451, fig. 2 a ("Yumbatos, Huallaga region, Peru "); Soukup 1954: 11 ( Peru); Rácenis 1959: 475 ( Peru); Kimmins 1966: 196 (Lectotype designated by Kimmins; "The [type] locality given by Fraser is not correct. The part of the paper triangles upon which he wrote his determinations gives the locality as Balsapuerto, not Yumbatos, and the labels have been amended accordingly."); von Ellenrieder & Garrison 2007: 16 (lectotype examined, synonymized with A. adamsi ).

Types. of adamsi : Holotype ♂: PANAMA, Bugaba, 1881–1883, G. C. Champion leg. [examined, BMNH]; of huallaga : LECTOTYPE ♂ PERU, Huallaga region, Balsapuerto, 1932 x, G. Klug leg. Argia huallaga n. sp. ♂ Type, det. F. C. Fraser [examined, BMNH].

Specimens examined (only those from Ecuador listed). 194 ♂♂, 28 ♀♀: Manabí Prov. : 1 ♂, Palmar [ Brown (1941: 838): "A small jungle town deep in the humid Pacific tropical forest. It is in the extreme eastern part of the province and should not be confused with the following coastal station of the same name. It is on the trail from Quito to the coast via Santo Domingo de los Colorados"] {0°9'57'' S, 79°27'59'' W, 200 m}, 31 March 1935, David B. Laddey leg. [ RWG] ; 1 ♂ same data but 10 April 1941 [ CSCA] ; 1 ♂ same data but [ RWG] ; 2 ♂♂, same data but [ UMMZ] ; 1 ♂ same data but Palmar, Maizito [Maicito?] River , 1 May 1941 [ RWG] ; 1 ♂ same data but 3 May 1941 [ UMMZ] ; 1 ♂ same data but Playones ( Palmar ), 14 May 1941 [ CSCA] ; 1 ♂ same data but [ RWG] ; 2 ♂♂ same data but [ UMMZ]; Pichincha Prov. : 1 ♂, road to Silanche Bird Sanctuary , stream 1 km north of highway, rock and gravel bottom, 5 km NW of Pedro Vicente Maldonado (W-571) (0°10'13'' N, 78°56'31'' W, 550 m), 3 February 2012, William Haber & Fred Morrison leg. [ RWG]; Santo Domingo de los Tsáchilas Prov. : 1 ♂, Hacienda La Lorena, Santo Domingo de los Colorados , a station about 15 km east of Santo Domingo de los Colorados {0°18'35'' S, 79°2'20'' W, 700 m}, 1 September 1940, David B. Laddey leg. [ CSCA] ; 1 ♂, same data but 21 February 1941 [ UMMZ] ; 1 ♂, 2 ♀♀ same data but 22 February 1941 [ RWG] ; 2 ♂♂, 1 ♀ same data but 25 February 1941 [ UMMZ] ; 1 ♂, same data but 26 February 1941 [ RWG] ; 1 ♂, same data but [ UMMZ] ; 1 ♂, same data but 1 March 1941 [ UMMZ] ; 1 ♂, same data but 4 March 1941 [ UMMZ] ; 1 ♂, same data but 5 March 1941 [ RWG] ; 1 ♂, same data but [ UMMZ] ; 1 ♂, same data but 8 March 1941 [ RWG] ; 1 ♂, same data but [ UMMZ] ; 1 ♂, same data but Santo Domingo de los Colorados {0°15'0'' S, 79°9'0'' W, 604 m}, 1 September, 1940, David B. Laddey leg. [ UMMZ] ; 2 ♂♂ same data but [ UMMZ] ; 1 ♂, same data but 18 September 1940 [ CSCA] ; 1 ♂, same data but [ RWG] ; 1 ♂, same data but [ UMMZ] ; 1 ♂, same data; same data but 23 September 1940 [ RWG] ; 1 ♂, same data but 28 September 1940 [ UMMZ] ; 1 ♂, same data but 25 January 1941 [ CSCA] ; 1 ♂, same data but 26 January 1941 [ RWG] ; 1 ♀ same data but 4 March 1941 [ RWG]; Morona Santiago Prov. : 1 ♂, Bomboiza, 17 km south of Gualaquiza (3°26'0'' S, 78°31'0'' W, 880 m), 20 September 1990, Oliver S. Flint, Jr. leg. [ USNM] ; 1 ♂, 1 ♀, Mangosisa, Upano River (2°31'28'' S, 77°53'41'' W, 850 m), 28 September 1945, Leopoldo Gomez Alonzo leg. [ RWG] ; 2 ♂♂, same data but [ UMMZ] ; 2 ♂♂, same data but 1945 [ CSCA] ; 2 ♂♂, Shicayacu River, Pastaza River watershed {1°5' S, 78°4'8'' W, 900 m}, 8 April 1941, William Clarke-Macintyre leg. [ UMMZ] ; 1 ♂, same data but 9 April 1941 [ CSCA] ; 1 ♂, same data but 6 June 1941 [ CSCA] ; 1 ♀, same data but [ RWG] ; 1 ♂, same data but June 1941 [ RWG]; Napo Prov. : 2 ♂♂, first stream of Bombaini-Yacu River {1°30' S, 78°0' W, 900 m}, 24 March 1941 [ RWG] ; 6 ♂♂, same data but [ UMMZ] ; 1 ♂, Pano (1°0'48'' S, 77°51'37'' W, 580 m), 12 September 1990, Oliver S. Flint, Jr. leg. [ USNM] ; 2 ♂♂, along trail between main road (Puyo-Baños) and Bombaini-Yacu, first stream, Pastaza River watershed {1°30' S, 78°0' W, 400 m}, 25 March 1941, William Clarke-Macintyre leg. [ CSCA] ; 1 ♂, same data but [ RWG] ; 1 ♂, 1 ♀, along trail between main road (Puyo-Baños) and Bombaini-yacu, Pastaza River watershed , 981 m [ RWG] ; 1 ♂, Concepción- Napo River , {1°40' S, 77°25' W, 400 m}, 2 December 1939 [ RMNH] ; 1 ♂, 1 ♀, same data but [ RWG] ; 1 ♂, same data but Concepcion- Napo River [ UMMZ] ; 4 ♂♂, same data but [ UMMZ] ; 1 ♂, same data but 12 December 1939 [ UMMZ] ; 2 ♂♂, Cotos, plantation on Napo River , below Napo {2°2'0'' S, 77°30'0'' W, 429 m}, 28 May, 1934 [ RWG] ; 1 ♀, same data but 5 June 1934 [ RWG] ; 1 ♂, 1 ♀, same data but [ UMMZ] ; 1 ♂, 1 ♀, same data but 19 June 1934 [ RWG] ; 1 ♂, same data but [ UMMZ] ; 1 ♂, same data but 28 June, 1934 [ RWG] ; 2 ♂♂, same data but [ UMMZ] ; 2 ♂♂, Hacienda Ila, Anzu River {1°12' S, 77°50' W, 700 m}, 1 December, 1934 [ UMMZ] ; 1 ♂, Headwaters of Churi-yacu, Pastaza River watershed {1°2'0'' S, 77°41'0'' W}, 900 m, 19 May, 1941 [ CSCA] ; 1 ♂, 1 ♀, same data but [ UMMZ] ; 1 ♂, same data but 29 May, 1941 [ RWG] ; 1 ♂, Headwaters, Arajuno River , Napo watershed, main river near ford {1°5'0'' S, 77°32'0'' W, 1,000 m}, 26 April, 1941 [ RWG] ; 5 ♂♂, same data but [ UMMZ] ; 2 ♂♂, Headwaters, Arajuno River , Napo watershed, main stream near ford, 25 April, 1941 [ RWG] ; 2 ♂♂, Headwaters, Arajuno River, Napo watershed, main stream near ford, about 2 km north of Stations on Streams 1, 2 & 3 [ UMMZ] ; 2 ♂♂, Jatun Sacha Biological Station , 23 km east Puerto Napo–Tropical wet forest, streams above flood plain (1°3'0'' S, 77°47'0'' W, 522 m), 1 October, 1988, Sidney W. Dunkle leg. [ RWG] ; 1 ♂, Jatun Yacu, Napo River watershed {1°1'0'' S, 77°50'0'' W, 700 m}, March 1937, William Clarke-Macintyre leg. [ CSCA] ; 2 ♂♂, same data but [ RWG] ; 5 ♂♂, same data but [ UMMZ] ; 2 ♂♂, Jatun Yacu, Napo River watershed ["compared with lectotype of A. huallaga ♂ in BMNH; same— L[eonora]KG[loyd]"], 22 February, 1937 [ RWG] ; 2 ♂♂, La Carolina, Anzu River {1°12' S, 77°50' W, 600 m}, 25 September, 1942 [ UMMZ] ; 3 ♂♂, Las Palmas, Anzu River, Napo River watershed {1°4' S, 77°48' W, 900 m}, 16 July, 1935 [ RWG] ; 1 ♂, same data but 1 December 1936 [ UMMZ] ; 1 ♂, near Bombaini-Yacu River, Pastaza River watershed {1°30' S, 78°0' W}, 9 April 1941 [ RWG] ; 1 ♂, Puerto Napo, 11.2 km east of highway 45 on Jatun Sacha road, Tiyuyacu River (1°3'6'' S, 77°42'6'' W, 522 m) 1 November 1997, William F. Mauffray leg. [ RWG] ; 2 ♂♂, 1 ♀, same data but [ USNM] ; 1 ♂, 1 ♀ (tandem pair), Puerto Napo, 11.2 km east of highway 45 on Jatun Sacha road, Tiyuyacu River [ USNM] ; 1 ♂, 2 ♀♀, Chinchipino River, 27 km east of Puerto Napo on Jatun Sacha road; Permit # 029-1C INEFAN/DANVS/VS (1°4'24'' S, 77°35'12'' W, 400 m), 22 July 1996, Sidney W. Dunkle leg. [ RWG] ; 1 ♀, Chinchipino River, east of Jatun Sacha , 1 November 1997, Kenneth J. Tennessen leg. [ RWG] ; 1 ♀, Chucapi River, tributary of Napo River {0°57' S, 77°45' W, 599 m}, 26 September 1934, William Clarke-Macintyre leg. [ RWG] ; 3 ♂♂, same data but [ UMMZ] ; 1 ♂, Anzu River (vicinity of Napo) {1°3'9'' S, 77°48'12'' W, 900 m}, 9 October, 1934 [ RWG] ; 1 ♂, Anzu River, Napo River watershed , April 1937 [ UMMZ] ; 1 ♂, 1 ♀ (in copula), Arajuno River, Dayuma Camp (1°6'0'' S, 77°35'0'' W, 434 m), 22–25 September 1990, J. Belle leg. [ RWG] ; 1 ♂, Bombaini-Yacu River, first stream, Pastaza River watershed {1°30' S, 78°0' W, 400 m}, 24 March 1941, William Clarke-Macintyre leg. [ CSCA] ; 2 ♂♂, same data but [ UMMZ] ; 2 ♂♂, Bombaini-Yacu River, Pastaza River watershed , 900 m [ CSCA] ; 7 ♂♂, same data but [ RWG] ; 2 ♂♂, same data but [ UMMZ] ; 1 ♂, 1 ♀, same data but 22 April, 1941 [ CSCA] ; 5 ♂♂, same data but [ RWG] ; 2 ♂♂, same data but [ UMMZ] ; 2 ♂♂, Bombaini-Yacu River, Pastaza River watershed , about 300 yards downstream, 24 March 1941 [ UMMZ] ; 1 ♂, Bombaini-Yacu River, Pastaza River watershed , near mouth [ UMMZ] ; 1 ♀, Ila River, near Hacienda Ila {1°12' S, 77°50' W, 700 m}, 18 August 1934 [ RWG] ; 1 ♂, Jatun-Yacu River, Ilupulin Creek (vicinity of Napo), headwater tributary of Napo River {1°1' S, 77°50' W}, January 1934 [ RWG] ; 3 ♂♂, 1 ♀, same data but [ RWG] ; 6 ♂♂, same data but [ UMMZ] ; 1 ♂, Sinde River on Jatun Sacha Road, 5.3 km east of Puerto Napo, Collected under Permit # 027 1C INEFAN/DNANVS (1°3'0'' S, 77°47'0'' W, 522 m), 15 June 1995, Sidney W. Dunkle leg. [ RWG] ; 2 ♂♂, Upper Ila River, vicinity of Napo, Napo River watershed {1°12' S, 77°50' W, 700 m}, 2 November 1934, William Clarke-Macintyre leg. [ UMMZ]; Orellana Prov. : 1 ♂, small stream ca 12 km north of Loreto, Rte E20 (0°37'18'' S, 77°15'36'' W, 367 m), 2 October 2013, Kenneth J. Tennessen leg. [ FSCA] ; 1 ♂, small stream near Carachupa (south of Route E20) (0°33'29'' S, 77°10'20'' W, 303 m), 3 October 2013 [ FSCA] ; 1 ♂, tributary of Payamino River, road to Loreto, 1.7 km west junction west of Coca Road {0°28'0'' S, 77°1'14'' W, 250 m}, 15 June 1995 [ RWG]; Pastaza Prov. : 1 ♀ (teneral), 2–8 miles north of Puyo (1°24'0'' S, 77°49'0'' W, 953 m), 9 February 1955, Evert I. Schlinger, Edward S. Ross leg. [ CAS] ; 1 ♂, 1 ♀, Canelos, Bobonaza River, Pastaza River watershed {1°35'0'' S, 77°48'0'' W, 500 m}, 1 December 1938, William Clarke-Macintyre leg. [ UMMZ] ; 1 ♂, same data but [ CSCA] ; 1 ♂, Puyo (1°28'0'' S, 77°59'0'' W, 1000 m), 18 April 2008, T. & K. Miyashita leg. [ HK] ; 1 ♂, 1 ♀, Huagrayacu River, Pastaza River watershed {1°25'0'' S, 78°1'0'' W, 900 m}, 14 March 1941, William Clarke-Macintyre leg. [ CSCA] ; 1 ♂, same data but 18 March 1941 [ CSCA] ; 2 ♂♂, same data but [ RWG] ; 2 ♂♂, same data but [ UMMZ] ; 1 ♂, same data but 24 March 1941 [ RWG] ; 1 ♂, 1 ♀, same data but 1941v 6 [ CSCA] ; 1 ♂, Huagrayacu River, Pastaza River watershed , 1 km above ford, 1941 March 28 [ CSCA] ; 2 ♂♂, 1 ♀, same data but [ RWG] ; 2 ♂♂, same data but [ UMMZ] ; 1 ♂, Huagrayacu River, Pastaza River watershed , at ford {1°25' S, 78°1' W}, 25 March 1941 [ RWG] ; 2 ♂♂, same data but {1°25'0'' S, 78°1'0'' W} [ RWG] ; 2 ♂♂, same data but near mouth, 14 April 1941 [ RWG] ; 1 ♂, same data but [ UMMZ] ; 1 ♂, 1 ♀, same data but upstream 1 km above ford, 28 March 1941 [ RWG] ; 1 ♂, smaller stream near Pasanac River bridge (south side) (1°57'12'' S, 77°51'32'' W, 750 m), 16 September 2005, Kenneth J. Tennessen leg. [ FSCA]; Tungurahua Prov. : 1 ♂, Guama Yacu (= Guamba River) near Agoyan , Pastaza River {1°24'45'' S, 78°22'16'' W, 2,000 m}, 9 November 1935, William Clarke-Macintyre leg. [ RWG] .

Remarks. This well-known species was described in detail by Calvert (1902, 1907). It has been recorded from Honduras (Atlántida Dept., about 25 km west of Tela, small streams in forest {15°37' N, 87°37' W, 700 m}, 9 March 1990, Sidney W. Dunkle leg [FSCA]) south through Bolivia (Santa Cruz Department, Japacani River {17°20' S, 63°15' W}), and east to Venezuela and Acre State in Brazil (Porto Acre, Igarapé Piancó, Reserva Florestal Humaitá (9°45'02" S, 67°40'19" W). Two males from La Chorrera, Panama identified by Kirby (1899) as Argia tinctipennis Selys and later thought to possibly represent A. indicatrix by Calvert (1902) represent A. adamsi . These two males were made available on loan through the courtesy of Dr. Benjamin Price; they had no determination labels but we have added determination labels to both specimens.

This is a highly variable species throughout its range as indicated by the terminal abdominal patterns for males (Figs. 36–42). Males from the western side of the Andes in Ecuador (Manabí, Pichincha and Santo Domingo de los Tsáchilas Provinces, Figs. 11 , 44, 144) are paler than those from the eastern side (but see below) and differ in having S8 entirely black (Fig. 41) whereas varying amounts of blue are present on this segment in specimens from elsewhere as shown (Figs. 36–40, 42). The overall pale coloration in the western Ecuadorean specimens is light blue ( Figs. 11 , 44, 144) and contrasts with the darker blue typical of more easterly populations ( Fig. 12 , 43, 143). The wings are also slightly amber colored but this condition is present in some populations from elsewhere in Central America. The antehumeral stripe also possesses a yellow cast differing from the remaining pale blue coloration but we have seen males from Costa Rica ( Fig. 10 ) and Panama that are similarly marked. The most consistent difference occurs in the shape of the appressed lateral lobe at the base of the terminal segment of the genital ligula; bluntly linear in specimens west of the Andes ( Fig. 90 ), with tip broadly spatulate in material occurring in Central America and South America east of the Andes ( Figs. 91a, c ). The late L. K. Gloyd considered A. adamsi from Ecuador west of the Andes to represent a new species to which she had applied the manuscript name A. " lorena." However we have found no significant differences in the male caudal appendages ( Figs. 104, 105 ) or in the female mesostigmal plates ( Figs. 70, 71 ). The contrasting differences between western and eastern populations of A. adamsi indicated above do not seem to be greater than variability within material we have examined throughout its range in Central America and South America east of the Andes. Accordingly, we do not believe that a new name should be applied to specimens from western Ecuador.

Through the courtesy of William Haber, we were also able to examine a male from Pichincha Province (road to Silanche Bird Sanctuary, stream 1 km north of highway, rock and gravel bottom, 5 km northwest of Pedro Vicente Maldonado) determined as " Argia sp. J". It differs from other western Ecuadorean populations noted above by having a dark purple instead of pale blue coloration but is otherwise characteristic of populations of A. adamsi (amber colored wings, identical genital ligula and appendage morphology) from Ecuador west of the Andes. Due to its unusual purple coloration, we first misidentified this species as the more northerly but closely related A. ulmeca Calvert which required us to further study these two species. We have found males of A. adamsi to differ from those of A. ulmeca by the following characters: outer branch of cercus in dorsal view a blunt lobe, with a broad and shallow U-shaped cleft defined between the unequal branches, Figs. 104b, 105b (outer branch relatively longer and forming a narrow and deep U-shaped cleft between unequal branches in A. ulmeca , Figs. 122b, d , 123–126 ); appressed lateral lobe of genital ligula broadly spatulate ( Fig. 91a ) to narrowly digit-like ( Fig. 90a ) in A. adamsi (appressed lateral lobe terminating as a narrow spine-like process in A. ulmeca , Fig. 102c ). This male is the first known specimen of A. adamsi whose pale coloration is purple instead of blue. Although both A. adamsi and A. ulmeca occur together in Central America, A. adamsi largely replaces A. ulmeca in South America; we have seen a few records for A. ulmeca as far south as Tolima Department (Mariquita, San Juan River) in central Colombia. The mesostigmal lobes for both species ( A. adamsi : Figs. 70, 71 ; A. ulmeca : Figs. 85–88 ) are similar and remarkably variable but the characters given by Calvert (1907; labrum black, 3 postquadrangular cells in Hw in A. adamsi ; labrum pale, 4 postquadrangular cells in Hw in A. ulmeca ) do serve to differentiate between these two species.

Figures

FIGURES 9–13. Color pattern of male head, thorax, and S1–4. Head, dorsal view, thorax and S1–4, lateral view.

FIGURES 89–93. Genital ligula. (a) lateral view; (b) ectal view; (c) entolateral view.

FIGURES 103–106. Male caudal appendages. (a) lateral view; (b) dorsal view; (c) mediodorsal view; (d) posterior view; (e) ventral view.

FIGURES 69–72. Female mesostigmal plates. (a) dorsal view; (b) detail of mesostigmal lobe, dorsal view; (c) frontal (anterior) view; (d) detail of mesostigmal lobe, posterodorsal view (on edge).

FIGURES 119–122. Male caudal appendages. (a) lateral view; (b) dorsal view; (c) mediodorsal view; (d) ventral view.

FIGURES 123–127. Male caudal appendages (123–126) and wings ♂ (127). (a) dorsal view; (b) ventral view.

FIGURES 98–102. Genital ligula. (a) lateral view; (b) ectal view; (c) entolateral view; (d) detail, lateral view.

FIGURES 84–88. Female mesostigmal plates. (a) dorsal view; (b) detail of mesostigmal lobe, dorsal view; (c) frontal (anterior) view; (d) posterior view; (e) detail of mesostigmal lobe, anterior view; (f) detail of mesostigmal lobe, posterodorsal view (on edge).