Ablabesmyia fazzari Neubern, 2013

Oliveira, Caroline Silva Neubern De, Silva, Mário Antonio Navarro Da & Gessner, Alaíde Aparecida Fonseca, 2013, <p> <strong> Neotropical <em> Ablabesmyia </ em> Johannsen (Diptera: Chironomidae, Tanypodinae) – Part I </ strong> </ p>, Zootaxa 3733 (1), pp. 1-123 : 47-53

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.

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.

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.

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.

Figures

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.