<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 fazzari Neubern sp. n. ( Figs 25–28 ) Type material. Holotype : ♂ with larval and pupal exuviae, Brazil , São Paulo , São Carlos , Fazzari reservoir, 47°53`08``W – 21°58`07``S , 09.iv.2007 , F.S. Laurindo — LEIA . Paratypes : ♂ with larval and pupal exuviae, same data as holotype— DZUP ; ♂ with larval and pupal exuviae, same data as holotype, 20.v.2004 , T . Siqueira — LEIA ; ♂ with pupal exuvia, same data as holotype, 09.xi.2004 , S. T . Strixino — DZUP ; ♂ , São Paulo , São Carlos , Lobo reservoir, 47°49`22``W – 22°15`10``S , 10.v.2004 , S. T . Strixino — DZUP . Diagnostic characters. A. fazzari sp. n. differs from other species by combination of the following characters: Male —antepronotum with 6 lateral setae, R 3 apex close to C, expanded megaseta, aedeagal complex with only one grooved aedeagal blade, dorsal lobe present; Pupa —apex of aeropyle tube club-shaped, thoracic horn with spines lateral outer border, dorsal pore in A IV between setae D 1 and D 3 , outer border of anal lobe with spines; Larva —head capsule expanded and with circular brown spot between the scars, ligula teeth in concave arch, dorsal pore present, dorsal seta S 12 present, palpal formula 2+0. Etymology. Named after Fazzari reservoir. Male (n = 5, unless otherwise stated): Dimensions : Total length 3.57–3.98 mm . Wing length 1.57–1.75 mm . Total length/wing length 2.26–2.27. Wing length/length of profemur 2.57–2.73. Coloration ( Figs 25A–E , 26A ): wings and thorax follow figures 25A and 25B. Legs: P I —femora with 2 bands, tibiae with 4 bands; P II, P III —femora without bands, tibiae with 3 bands. Ratio of bands, related tibiae and tarsomeres 1 follow table 20. Hypopygium: gonocoxite apex brown and gonostylus base yellow. TABLE 20. Ratio of bands, related tibiae and tarsomeres 1 of A. fazzari sp. n. , ♂, (n=5).

A/B	LMB/LBCB	Y/Z
P I	0.54-0.61	0.73–0.78	0.38–0.40
P II	0.49–0.54	0.38–0.61	0.36–0.40
P III	0.47–0.52	0.53–0.57	0.38–0.41

Head : antenna with 14 flagellomeres; AR 1.38–1.51; apical flagellomere 68–92 µm long and subapical seta 21–22 µm long; temporals 33–37; postoculars 14; coronal triangle 140–143 µm long and base 90–95 µm; clypeus bearing 30–35 setae, 117–130 µm long and 88 µm wide; labrum with 3 setae, 95–98 µm long and 55–60 µm wide; tentorium 152 µm long; cibarial pump 299–300 µm long and orifice 55–60 µm from apex; palpomeres 1–5 : 45–46; 71–98; 119–123; 95–99; 333 µm long; palpomere 3 with sensilla capitata 31–40 µm from base. Wing ( Fig. 25A ): width/lenght 0.29–0.30; VR 0.82–0.84; C 1.46–1.61 mm long; Sc 0.73–0.92 mm long; m-cu 31 µm long and 475–513 µm from arculus; fr 581–613 µm from arculus; R 3 apex close to C; brachiolum with 3 setae; squama with 32–37 setae. Thorax ( Fig. 25B ): antepronotals 6; humerals 7; prealars 25–29; supraalar 1; scutelars 49–50. Legs ( Fig. 25C–E ): P I —apex of tibia 40–51 µm wide and with apical pectinated spur 70–85 µm long, spur ratio 0.38–0.53; tarsomeres 1–2 with 1 or 2 pseudospurs 55–66 µm long. P II —apex of tibia 37–54 µm wide and with 2 apical pectinated spurs 50–62 and 26–30 µm long, spur ratio 0.56–0.66 and 0.59–1 respectively; tarsomeres 1–3 with 2 apical pseudospurs 44–62 µm long. P III —coxa with 5 central microsetae; apex of tibia 45–52 µm wide and with 2 apical pectinated spurs 51–55 and 25–26 µm long, spurs ratio 0.56–0.64 and 0.76–0.81 respectively; tarsomeres 1–2 with 1 or 2 apical pseudospurs 55–65 µm long. Lengths and proportions of leg segments in table 21. TABLE 21. Lengths (in µm) and proportions of leg segments in A. fazzari . sp. n. , ♂, (n=5).

fe	ti	ta1	ta2	ta3	ta4
P I	620–644	687.5–781	581–669	400–469	281–350	194–212.5
P II	594–644	625–662.5	587.5–712.5	344–400	250–310	162.5–200
P III	500–625	737.5–875	644–881	381–494	269–344	225–237.5

TABLE 21. (Continued)

ta5	LR	BV	SV	BR
P I	125–144	0.83–0.86	1.78–1.90	2.13–2.27	3.1–3.5
P II	119–131	0.94–1.08	1.84–2.06	1.83–2.07	3.9–5.1
P III	123–137.5	0.87–1.01	1.89–2.01	1.60–2.12	4.6–4.7

Hypopygium ( Fig. 26A–D ): tergite IX with 2 central setae; anal point completely covers the aedeagal complex; phallapodeme 34 µm long; sternapodeme 108–111 µm long; gonocoxite 122–132 µm long and 79–85 µm wide; gonostylus 139–142 µm long, with 6 apical teeth; expanded megaseta; HR 0.88–0.93; HV 2.59–2.80. Aedeagal complex: grooved aedeagal blade 31 µm long, base 5–7 µm, 9/10 3–4 µm; dorsal lobe with fringe, 14–16 µm long and base 17–19 µm; lateral lobe and basidorsal lobe present. Female : Unknown. Pupa (n = 4, unless otherwise stated): Dimensions : male abdomen 2.35–2.79 mm long. FIGURES 25A–E. Ablabesmyia fazzari sp. n. : adult male. (A) Wing; (B) Thorax; (C–E) P1 (C), P2 (D), P3 (E). FIGURES 26A–D. Ablabesmyia fazzari sp. n. : adult male. (A) Hypopygium: dorsal aspect; (B, C) Hypopygium: ventral aspect; (D) Aedeagal complex. FIGURES 27A–D. Ablabesmyia fazzari sp. n. : pupa. (A) Wing; (B) Thoracic horn; (C) Abdominal segments 1–5, with chaetotaxy of segment 4, right: ventral aspect, left: dorsal aspect; (D) Abdominal segments 6-8 and anal lobe with male genital sac, right: ventral aspect, left: dorsal aspect. FIGURES 28A–D. Ablabesmyia fazzari sp. n. : larva. (A) Head with chaetotaxy, right: ventral aspect, left: dorsal aspect; (B) Maxillary palp; (C) Ligula, paraligula and pecten hypopharyngis; (D) posterior parapod. Coloration ( Fig. 27A–D ): exuviae yellow with central spots brown, wing sheath without spots. Cephalothorax ( Fig. 27A, B ): wing sheath 1.0– 1.14 mm long and with complete veins; thoracic horn 317–408 µm long and 188–195 µm wide, lumen with hexagonal pattern only on the sides, spines present on the base and border, apex of aeropyle tube club-shaped; thoracic comb with 9 conical teeth. Abdomen ( Fig. 27C, D ): shagreen as small spines in arc, present in A II–VIII ; scar in A I 150–175 µm long; A IV chaetotaxy follow figure 27C, dorsal pore between setae D 1, D 3 and D 5 ; A VII with 4 lateral setae, LS 1 119–144 µm long; A VIII with 5 lateral setae, LS 1 75–83 µm long; anal lobe 355–358 µm long, base 280–294 µm wide, with 2 anal macrosetae LS 1 162–177 µm long, LS 2 203–223 µm long, outer border with spines; genital sac shorter than the anal lobe, 271–282 µm long; GS/AL 0.76–0.79. Larva (n = 3, unless otherwise stated): Dimensions : head capsule 563–581 µm long and 475–563 µm wide. Coloration ( Fig. 28A–D ): head capsule yellow with circular brown spots between the scars; postoccipital margin brown; ligula teeth brown; procercus yellow; posterior parapod with 16 claws, 3 hooked claws brown and 13 simple claws yellow. Head Capsule ( Fig. 28A–C ): expanded, IC 1.0–1.22, chaetotaxy follow the figure 28A, dorsal setae S 12 present; AR 3.50–3.62, antennomeres 1,2-4 : 295–308, 82–88 µm long; ring organ in A 1 166–174 µm from the base; maxillary palp with 2 segments, palpomeres 1-2 : 32–34, 26–32 µm long; palpal formula 0+2, P 1 /P 2 1.04–1.29, A 1 /P 1 8.72–9.37, A 2 /P 1 2.13–2.28; mandible 89–105 µm long, with campaniform sensillum 22–26 mm from the base, A 1 /MD 2.94– 3.31; dorsomental tooth 39 mm long and far apart 55–61 mm , pseudoradula slightly granulated and with homogeneous width; ligula 71–83 mm long and 46–52 mm wide, with 5 teeth in concave arch, It/O 0.86–0.94; Mt/ O 0.76–0.79; It/Li 0.17–0.22; muscle attachment of ligula 19–22 µm long and 35–40 mm wide; bifid paraligula 37–48 µm long, pectin hypopharyngis with 17–18 teeth. Abdomen ( Fig. 28D ): procercus 77–94 µm long and 26–29 µm wide, 7 anal setae 570–581 µm long; supraanal seta simple and 350–377 µm long; supraanal seta lenght/ anal setae lenght 0.61–0.65; posterior parapods with 13 simple claws, with the serrated sides and 3 hooked claws with the smooth sides, claw with truncated base absent, tip of posterior parapods with spines.