Ablabesmyia parareissi 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 : 99-102

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.

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.

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.

Figures

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.