Ablabesmyia pinhoi 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 : 102-106

Ablabesmyia pinhoi Neubern sp. n.

( Figs 61–63 )

Type material. Holotype: ♂ with pupal exuviae, Brazil, São Paulo, São Carlos, UFSC ar, Fazzari river , 47°52`00``W – 21°53`00``S, 06.vi.2003, C.S.N. Oliveira — LEIA . Paratypes: ♂ with pupal exuviae, same data, 10.xi.2004, L.M. Fusari — LEIA ; 2 ♂♂, São Paulo, Pedregulho, Furnas do Bom Jesus park, Bom Jesus river , 47°28`36``W – 20°15`25``S, 14.ix.2007, light trap, L.C. Pinho — LEIA ; 2 ♂♂, Mato Grosso, Ribeirão Cascalheira, Gleba Maria Tereza , 55°15`23``W – 14°14`42``S, 09.x.2007, light trap, L.C. Pinho, S. Mateus, L. Torati & F. R . Silva — LEIA ; 4 ♂♂, same data— DZUP .

Diagnostic characters. A. pinhoi sp. n. differs from other species by the combination of the following characters: Male —expanded megaseta, gonostylus with 8 apical teeth, aedeagal complex with grooved aedeagal blade not beyond the basidorsal lobe, dorsal lobe absent; Pupa —wing sheath veins and spots absent, apex of aeropyle tube club-shaped, thoracic horn with spines only in the basal outer border, dorsal pore in A IV between setae D 3 and D 5, genital sac ending beyond the second anal macrosetae.

Etymology. Named after Dr. Luiz Carlos Pinho, who collected the specimen.

Male (n = 5, unless otherwise stated): Dimensions: Total length 3.52–4.08 mm. Wing length 1.52–1.84 mm. Total length/wing length 2.21–2.32. Wing length/length of profemur 2.52–2.76.

Coloration ( Figs 61A–E , 62A ): wings and abdomen follow figures 61A and 61E. Legs: P I —femora with 2 bands, tibiae with 4 bands; P II —femora with 3 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 46. Hypopygium: gonocoxite and gonostylus yellow.

Head: antenna with 14 flagellomeres; AR 1.81–1.82; apical flagellomere 111–125 µm long and subapical seta 27–31 µm long; temporals 41–45; postoculars 14; coronal triangle 121–128 µm long and base 100 µm; clypeus bearing 35–38 setae, 105–113 µm long and 95–98 µm wide; labrum with 3 setae, 114–123 µm long and 70–73 µm wide; tentorium 157–165 µm long; cibarial pump 288–290 µm long and orifice 53–55 µm from apex; palpomeres 1– 5: 55–63; 88–95; 125–135; 109–118; 210–217 µm long; palpomere 3 with sensilla capitata 31–35 µm from base.

Wing ( Fig. 61A ): width/lenght 0.30–0.34; VR 0.84–0.91; C 1.41–1.71 mm long; Sc 0.66–0.80 mm long; m-cu 36–38 µm long and 422–510 µm from arculus; fr 503–610 µm from arculus; R 3 apex close to C; brachiolum with 3 setae; squama with 45–48 setae.

Thorax: antepronotals 13–14; humerals 8–10; prealars 21–24; supraalar 1; scutelars 33–35.

Legs ( Fig. 61 B–D ): P I –apex of tibia 43–48 µm wide and with apical pectinated spur 55–57 µm long, spur ratio 0.55–0.59; tarsomeres 1–3 with 1 or 3 pseudospurs 55–77 µm long. P II —apex of tibia 45–46 µm wide and with 2 apical pectinated spurs 63–77 and 40–50 µm long, spur ratio 0.44–0.56 and 0.48–0.55 respectively; tarsomeres 1–3 with 6 or 7 apical pseudospurs 77–80 µm long. P III —coxa with 5 central microsetae; apex of tibia 43–45 µm wide and with 2 apical pectinated spurs 62–77 and 40–55 µm long, spurs ratio 0.45–0.58 and 0.47–0.58 respectively; tarsomeres 1–3 with 2 apical pseudospurs 66–70 µm long. Lengths and proportions of leg segments table 47.

Hypopygium ( Figs 62A–C ): tergite IX with 3 central setae; anal point absent; phallapodeme 82–85 µm long; sternapodeme 105–113 µm long; gonocoxite 147–165 µm long and 100–113 µm wide; gonostylus 141–158 µm long, with 8 apical teeth; expanded megaseta; HR 1.04–1.05; HV 2.51–2.72. Aedeagal complex: grooved aedeagal blade 38.5–42.5 µm long, base 10 µm, 9/10 6 µm; dorsal lobe absent; lateral lobe and basidorsal lobe present.

Female: unknown.

Pupa (n = 2, unless otherwise stated): Dimensions: male abdomen 3.10–3.13 mm long.

Coloration ( Fig. 63A–D ): exuviae yellow, wing sheath without spots.

Cephalothorax ( Fig. 63A, B ): wing sheath 1.18–1.20 mm long and without veins; thoracic horn 443–446 µm long and 231–232 µm wide, lumen with hexagonal pattern only in sides, spines present on the base, apex of aeropyle tube club-shaped; thoracic comb with 9 conical teeth.

Abdomen ( Fig. 63C, D ): shagreen as small spines in arc, present in A II–VIII; scar in A I 181–185 µm long; A IV chaetotaxy follow figure 63C, dorsal pore between setae D 3 and D 5; A VII with 4 lateral setae, LS 1 141–144 µm long; A VIII with 5 lateral setae, LS 1 77–81 µm long; anal lobe 377–383 µm long, with 2 anal macrosetae, LS 1 168–171 µm long, LS 2 209–215 µm long, outer border with spines; genital sac shorter than the anal lobe, 289–300 µm long; GS/ AL 0.77–0.78.

Figures

FIGURES 61A–E. Ablabesmyia pinhoi sp. n.: adult male. (A) Wing; (B–D) P1 (B), P2 (C), P3 (D); (E) Abdomen.

FIGURES 62A–C. Ablabesmyia pinhoi sp. n.: adult male. (A) Hypopygium: dorsal aspect; (B) Hypopygium: ventral aspect; (C) Aedeagal complex.

FIGURES 63A–D. Ablabesmyia pinhoi 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.