taxonID	type	description	language	source
03AC05695342FFED09E3FF1ABFCAF9A2.taxon	materials_examined	Material examined. ARGENTINA, Catamarca Province, El Simbolar stream (28 ° 39 ' 02, 21 ' S and 66 ° 03 ' 11.69 ' W) located at 980 m a s l; one male and pupal exuviae associated, 13. vii. 12, drift net (MLP); one male, 26. v. 12, light trap; two pupal exuviae, 13. vii. 12, (El Simbolar pools) hand net; two associated larval and pupal exuviae, 11. viii. 06, drift net, Rodriguez Garay col., (ILPLA); San Luis Province, Rio Grande river (32 º 50 ' S and 66 º 05 ' O) located at 1600 m a s l one male and pupal exuvia, two larval exuviae, one pupal exuvia, 11. v. 06; one male, 17. xi. 06; one pupal exuvia, 27. ii. 08; two pupal exuvia, 16. xi. 08, Paggi & Medina col. (ILPLA).	en	Paggi, Analía C., Rodriguez Garay, Gretel N. (2015): The presence of species of Pseudochironomus Malloch 1915 (Diptera: Chironomidae) in watercourses of Chaco Serrano Ecoregion (Argentina, South America). Zootaxa 3957 (3): 334-341, DOI: 10.11646/zootaxa.3957.3.6
03AC05695342FFED09E3FF1ABFCAF9A2.taxon	description	Description (Figs 1 – 17). Male (n = 4 except when otherwise stated) Total length 5.23 – 5.96, 5.49; wing length 2.59 – 2.86, 2.75 (3); total length / wing length 1.97 – 2.16, 2.09 (3); wing length / length of profemur 2.38 – 3.01, 2.76 (3). Coloration: General coloration uniformly brown. Wing hyaline with yellow veins. Fore leg with femur yellow, tibia and tarsi all brown; mid leg with femur yellow, tibia light brown and tarsi all brown; hind leg with femur yellow, tibia and proximal 2 / 3 of ta 1 yellow to light brown, distal part of ta 1 and ta 2 – 5 brown (Fig. 1). Head. AR = 1.41 – 1.63, 1.53 (3); last flagellomere length 654 – 696, 679 (3); temporal setae 25 – 33, 30. Clypeus with 10 – 17, 14 setae. Tentorium 182 – 199, 190 (3) long. Palpomere - lengths (µm) 58 – 75, 66; 58 – 75, 67; 116 – 166, 137; 124 – 215, 174; 182 – 273, 242. Third palpomere with a slight fingerlike process. Thorax. Antepronotals 6 – 8, 7, small; dorsocentrals 14 – 16, 15 in a single row, arising from pale areas; prealars 3 – 5, 5; scutellum with 19 – 24, 22 setae irregularly distributed (Fig. 2). Wing (Fig. 3). VR = 1.12 – 1.14 (3); brachiolum with 2 setae, R with 13 – 17 setae, R 1 with 1 sensitive organ, R 4 + 5 10 – 11 apical setae. Squama with 16 – 18, 17 (3) setae. Legs. Spur of foretibia 57 – 61, 58 (3) long; spurs of midtibia 55 – 65, 58 (3) and 49 – 61 µm long; spurs of hind tibia 57 – 91, 73 and 63 – 65 long. Sensilla chaetica 7 – 8 on ta 1 of each PII and PIII. Length (in µm) and proportions of legs as in Table 1. Abdomen. Dark brown colored with pale areas in the base of setae wich are homogeneously distributed in all the segments. Hypopygium (Fig. 4). Posterior margin of tergite IX with median notch (Fig. 5) with 32 setae. Laterosternite IX with 9 setae. Phallapodeme 83 – 91, 85 long. Transverse sternapodeme 83 – 157, 126 long. Superior volsella 81 – 101, 87 long curved toward each other, apically concave ending as two points, totally naked; inferior volsella foot shaped, 75 – 83, 79 long, with microtrichia and long setae, longest apical setae 51 long, median volsella (2 a) 8 µm long bears 1 apical setae and 1 subapical setae 30 µm long. Gonocoxite 199 – 215, 207 µm long. Gonostylus 133 – 149, 139 long. HR = 1.44 – 1.53, 1.49; HV = 3.93 – 4.24, 4.04. Pars ventralis divided into two 49 – 61, 56 long and 14 – 18, 16 wide lobes, join at base (Fig. 6). continued. Female only pharate not well discernible. Pupa (n = 8 except when otherwise stated) Total length 5.33 – 6.93, 6.41 mm. Exuviae brownish yellow. Cephalotorax. Frontal apotome as in figure 7, frontal setae absent. Thoracic horn (Fig. 8), 414 – 580, 511 (3) long, smooth, shorter branch not discernible. Three precorneals, anterior 53 – 108, 73 (5), median 122 – 172, 154 (5), posterior 41 – 81, 66 (5) long; 2 median antepronotals 99 – 157, 127 (5 (not drawn), dorsocentrals, 1 st 33 – 83, 52 (3), 2 nd 37 – 50, 43 (3), 3 th 31 – 50, 41 (3), 4 th 31 – 41, 38 (3), 1 st – 2 nd separated from 3 th – 4 th by 373 long. Abdomen. (Fig. 9). TI with 2 patches of shagreen, patches weakly visible in the specimens from San Luis; TII with 84 – 124, 109 posterior hooklets; TII – TVI covered with shagreen except postero lateral margins, oral shagreen stronger; T III-VII with antero median patch of spinules over a light pigmentation background; TVI with posterior band of strong spinules; TVIII with antero median and lateral shagreen. Paratergites V – VII with anterior field of fine shagreen. Conjunctives III / IV to IV / V with 3 – 5 rows of sclerotized spinules with light base. SI with one pair of tubercles fully covered with spines, the other granulose (San Luis specimens) or with few and very small spines (Catamarca specimens) (Fig. 10); SII, III with anterior transverse band of spinules; V – VIII with anterolateral patch of spinules. Pedes spurii A on SIV-VII. Segment VIII with 3 – 8, 5 comb-like caudolateral spines 8 – 30 µm long (Fig. 11). Segment II – IV with 2 small L setae and a 3 rd. dorsolateral, segment V – VIII with 3, 4, 4, 5 L taeniate setae. Anal lobe 257 – 356, 315 µm long, with 25 – 54, 35 double fringe of taeniate setae and a pair of dorsal setae (Fig. 12). Larval exuviae (n = 4 except when otherwise stated) Coloration. Head brown; mentum, mandibular teeth except apical tooth and occipital margin dark brown. Head. Antenna (Fig. 13), with 5 segments, length of antennal segments 73 – 89, 78; 16 – 20, 18; 10 – 14, 11; 8 – 6, 7; 4, AR = 1.7 – 2.5, 1.8; second antennal segment 1.4 – 1.6 times as long as third; blade equal or slightly longer than segments 2 – 5, 41 – 45, 43 long; basal antennal segment 20 – 22, 21 wide, distance from base to ring organ 12 – 14, 13, to basal mark of setae 18 – 22 to distal mark 57 – 61. Premandible 106 – 108 long as in Fig. 14. Pecten epipharyngis as in figure 15. Mentum (Fig. 16), with median tooth and 6 lateral teeth, second lateral tooth small, fifth very wide that makes sixth appeared like separated, ventromental plates narrow. Mandible (Fig. 17), 173 – 203, 192 long. Abdomen. Not measurable in the exuviae.	en	Paggi, Analía C., Rodriguez Garay, Gretel N. (2015): The presence of species of Pseudochironomus Malloch 1915 (Diptera: Chironomidae) in watercourses of Chaco Serrano Ecoregion (Argentina, South America). Zootaxa 3957 (3): 334-341, DOI: 10.11646/zootaxa.3957.3.6
03AC05695346FFEE09E3F928BC2AFDFF.taxon	materials_examined	Material examined. ARGENTINA, 1 larval and pupal exuvia associated, San Luis, Carolina stream, 18. i. 07; Rio Grande river, 1 pupal exuvia, 16. xi. 08; A. C. Paggi and A. I. Medina col. (ILPLA). Pupal exuvia (n = 2): The following measurements are different from the original description. Total length 5.85. Cephalotorax: Thoracic horn with longer branch about 870, maximum width about 149, shorter branch not well discernible. Precorneal setae, anterior about 112; median about 150; posterior about 76; antepronotal setae about 102 – 122 long; Dc 1 – 2 and Dc 3 – 4 10 – 12 apart, Dc 3 separate 265 – 376 of Dc 2. Abdomen: Tergite II with 65 – 80 posterior hooklets. Sternite VIII with 5 caudolateral spines. Anal lobe 298 –– 373 long with 14 fringe setae. Larva (n = 1): (The following measurements are different from the original description). Total length about 4.15. Length of antennal segment (µm): 77: 16: 10: 7: 4; AR = 2.1; basal antennal segment 22 wide, distance from base to ring organ 12, to basal mark of seta 20, to distal mark 55; premandible 97.44 long; mandible 179 long. Abdomen: Procercus 41 high, 30 wide, with 8 apical setae about 331 long; supraanal setae about 50 long. Each parapod with 15 claws.	en	Paggi, Analía C., Rodriguez Garay, Gretel N. (2015): The presence of species of Pseudochironomus Malloch 1915 (Diptera: Chironomidae) in watercourses of Chaco Serrano Ecoregion (Argentina, South America). Zootaxa 3957 (3): 334-341, DOI: 10.11646/zootaxa.3957.3.6
03AC05695346FFEE09E3F928BC2AFDFF.taxon	discussion	Remarks. The studied specimens share widely the diagnostic characters of P. richardsoni except the larval mentum which has 13 teeth instead of 9, and each posterior parapod with 15 claws instead of 55 of the Nearctic specimens (Saether, 1977), these differences probably represent a geographic variation within the same species. The presence of P. richardsoni in Argentina represents a wide distribution of this species from the Neartics to the Neotropical Region.	en	Paggi, Analía C., Rodriguez Garay, Gretel N. (2015): The presence of species of Pseudochironomus Malloch 1915 (Diptera: Chironomidae) in watercourses of Chaco Serrano Ecoregion (Argentina, South America). Zootaxa 3957 (3): 334-341, DOI: 10.11646/zootaxa.3957.3.6
