<p> <strong> Neotropical <em> Ablabesmyia </ em> Johannsen (Diptera: Chironomidae, Tanypodinae) – Part I </ strong> </ p> Author Oliveira, Caroline Silva Neubern De csneubern@gmail.com Author Silva, Mário Antonio Navarro Da Author Gessner, Alaíde Aparecida Fonseca text Zootaxa 2013 2013-11-04 3733 1 1 123 http://dx.doi.org/10.11646/zootaxa.3733.1.1 journal article 10.11646/zootaxa.3733.1.1 1175-5326 5268657 EE758378-9459-4970-8D59-5258597A0E28 Ablabesmyia parareissi Neubern sp. n. ( Figs 59 , 60 ) Type material. Holotype : ♂ , Brazil , Rio Grande do Sul , Jaquirana , Passo da Ilha , Tainha river , 50°21`28``W – 28°53`06``S , 05.xi.2007 , L.M. Fusari — LEIA . Paratypes : ♂ , same data as holotype— DZUP ; ♂ , Minas Gerais , Catas Altas Santuário , Caraça river , 43°24`28``W – 20°04`30``S , 29.vii.2008 , light trap , L.C. Pinho — LEIA . Diagnostic characters. A. parareissi sp. n. differs from other species by the combination of the following characters: labrum with 3 setae, antepronotal lobe with 12–14 setae, fr 750–806 µm from arculus, m-cu towards fcu, R 3 apex close to C, pigmentation of front and middle femur and front tibia, expanded megaseta, aedeagal complex with only 1 grooved aedeagal blade, dorsal lobe present, sternapodeme 109–112 µm long. Etymology. Named due resemblance to the species Ablabesmyia reissi Paggi & Suarez, 2000 . Male (n = 3, unless otherwise stated): Dimensions : Total length 3.76–4.12 mm . Wing length 2.10–2.29 mm . Total length/wing length 1.77–1.79. Wing length/length of profemur 2.36–2.57. Coloration ( Figs 59A–F , 60A ): wings, thorax and abdomen follow figures 59A, 59B and 59F, respectively. Legs: P I, P II —femora with 2 bands, tibiae with 3 bands; P III —femora with 1 band, tibiae with 3 bands. Ratio of bands, related tibiae and tarsomeres 1 follow table 44. Hypopygium: gonocoxite apex and gonostylus brown. TABLE 44. Ratio of bands, related tibiae and tarsomeres 1 of A. parareissi sp. n. , ♂, (n=3).

A/B	LMB/LBCB	Y/Z
P I	0.45-0.49	0.35–0.50	0.35–0.36
P II	0.47–0.53	0.35–0.41	0.36
P III	0.46–0.48	0.36–0.56	0.37–0.38

TABLE 45. Lengths (in µm) and proportions of leg segments in A. parareissi sp. n. , ♂, (n=3).

fe	ti	ta1	ta2	ta3	ta4
P I	890–892	985–1077	769–785	523–538.5	385–415	246–277
P II	954–1000	1030–1061.5	670–692	398–415	317–323	200–211
P III	892–908	1231–1246	971–985	525–538,5	391–400	270–277

TABLE 45. (Continued)

ta5	LR	BV	SV	BR
P I	154–200	0.71–0.80	1.92–2.02	2.39–2.56	4.4–4.6
P II	133–138.5	0.65	2.50–2.56	2.96–3.0	5.1–5.2
P III	161–169	0.78–0.80	2.24–2.31	2.16–2.21	6.4–6.7

Head : antenna with 14 flagellomeres; AR 1.40–1.42; apical flagellomere 119–122 µm and subapical seta 36– 40 µm long; temporals 44–47; postoculars 12; coronal triangle 160 µm long and base 88 µm; clypeus bearing 36– 38 setae, 94–95 µm long and 97–98 µm wide; labrum with 3 setae, 93–97 µm long and 36–38 µm wide; tentorium 185–186 µm long; cibarial pump 298–302 µm long and orifice 62–62 µm from apex; palpomeres 1–5 : 60–69; 115; 169–215; 185–200; 331–338 µm long; palpomere 3 with sensilla capitata 51–68 µm from base. Wing ( Fig. 59A ): width/lenght 0.30–0.31; VR 0.78–0.82; C 1.96–2.12 mm long; Sc 1.06–1.15 mm long; m-cu 42–51 µm long and 613–625 µm from arculus; fr 750–806 µm from arculus; R 3 apex close to C; brachiolum with 4 setae; squama with 44–49 setae. Thorax ( Fig. 59B ): antepronotals 12–14; humerals 5; prealars 33; supraalar 1; scutelars 45. FIGURES 59A–F. Ablabesmyia parareissi sp. n. : adult male. (A) Wing; (B) Thorax; (C–E) P1 (C), P2 (D), P3 (E); (F) Abdomen. FIGURES 60A–B. Ablabesmyia parareissi sp. n. : adult male. (A) Hypopygium: dorsal aspect; (B) Hypopygium: ventral aspect. Legs ( Fig. 59C–E ): P I –apex of tibia 55–62 µm wide and with 1 apical pectinated spur 59–66 µm long, spur ratio 0.52–0.55; tarsomeres 1–3 with 2 pseudospurs 55–59 µm long. P II –apex of tibia 52–60 µm wide and with 2 apical pectinated spurs 62–69 and 47–48 µm long, spurs ratio 0.52–0.59 and 0.54–0.68 respectively; tarsomeres 1–3 with 2 pseudospurs 45–61 µm long. P III –apex of tibia 40–57 µm wide and with 2 apical pectinated spurs 54–62 and 31–55 µm long, spurs ratio 0.60–0.63 and 0.47–0.50 respectively; tarsomeres 1–3 with 2 pseudospurs 51–63 µm long. Lengths and proportions of leg segments table 45. Hypopygium ( Fig. 60A, B ): tergite IX with 3–4 central setae; anal point covers the aedeagal complex; phallapodeme 51–55 µm long; sternapodeme 109–112 µm long; gonocoxite 176–191 µm long and 115–119 µm wide; gonostylus 167–172 µm long, with 6 apical teeth; expanded megaseta; HR 1.05–1.11; HV 2.25–2.40. Aedeagal complex: grooved aedeagal blade with curved apex 24–26 µm long and base 9 µm, 9/10 4–5 µm; dorsal lobe with fringe, 9 µm long and base 10–11 µm, lateral lobe and basidorsal lobe present. Female and immatures: unknown.