Ablabesmyia martha 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 : 83-86

Ablabesmyia martha Neubern sp. n.

( Figs 49 , 50 )

Type material. Holotype: ♂, Brazil, Amazonas, Coari, Urucu, igarapé Martha , 63°13`89``W– 04°13`33``S, 16– 24.xi.2007, S. R . M. Couceiro — LEIA . Paratypes: 2 ♂♂, same data— DZUP ; 2 ♂♂, Mato Grosso, Ribeirão Cascalheira, Suiamissu river, Campina Verde farm, light trap, 51°53`47``W – 12°55`59``S, 10.x.2007, L.C. Pinho, S. Mateus, L. Torati & F. R . Silva — LEIA ; 4 ♂♂, same previous data— DZUP .

Diagnostic characters. A. martha sp. n. differs from other species by the combination of the following characters: temporals 44–47, front femur with 2 bands, front tibia with 4 bands, hind femur with 1 band, hind tibia with 3 bands, gonostylus with 5 apical teeth, tapered megaseta, grooved aedeagal blade not beyond the basidorsal lobe, dorsal lobe pointed.

Etymology. Named after igarapé Martha.

Male (n = 5, unless otherwise stated): Dimensions: Total length 2.78–3.33 mm. Wing length 1.57–1.71 mm. Total length/wing length 1.64–2.11. Wing length/length of profemur 2.62–2.75.

Coloration ( Figs 49A–F , 50A ): wings, thorax and abdomen follow figures 49A, 49B and 49F. Legs: P I, P II — femora with 2 bands, tibiae with 4 bands; P III —femora with 1 band, tibiae with 3 bands. Ratio of bands, related tibiae and tarsomeres 1 follow table 36. Hypopygium: gonocoxite apex brown and gonostylus yellow.

Head: antenna with 14 flagellomeres; AR 1.89–1.91; apical flagellomere 98–113 µm long and subapical seta 35 µm long; temporals 44–47; postoculars 18; coronal triangle 110 µm long and base 81 µm; clypeus bearing 20– 29 setae, 75–95 µm long and 80–91 µm wide; labrum with 2–3 setae, 93–99 µm long and 45–60 µm wide; tentorium 155–175 µm long; cibarial pump 280 µm long and orifice 50 µm from apex; palpomeres 1–5: 43–45; 80– 85; 113–115; 104–113; 210–215 µm long; palpomere 3 with sensilla capitata 28–37 µm from base.

Wing ( Fig. 49A ): width/lenght 0.28–0.29; VR 0.81–0.83; C 1.42–1.56 mm long; Sc 0.55–0.75 mm long; m-cu 38 µm long and 440–480 µm from arculus; fr 530–590 µm from arculus; R 3 apex close to C; brachiolum with 3 setae; squama with 37–39 setae.

Thorax ( Fig. 49B ): antepronotals 18; humerals 4; prealars 19–23; supraalar 1; scutelars 26–33.

Legs ( Fig. 49C–E ): P I —apex of tibia 51–53 µm wide and with apical pectinated spur 55–56 µm long, spur ratio 0.49–0.50; tarsomeres 1–2 with 2 pseudospurs 68–73 µm long. P II —apex of tibia 50 µm wide and with 2 apical pectinated spurs 60–65 and 45–48 µm long, spur ratio 0.44–0.50 and 0.54–0.68 respectively; tarsomeres 1–2 with 2 apical pseudospurs 65–80 µm long. P III –coxa with 5 central microsetae; apex of tibia 50–56 µm wide and with 2 apical pectinated spurs 63–65 and 50–53 µm long, spurs ratio 0.48–0.50 and 0.48–0.54 respectively; tarsomeres 1–2 with 2 apical pseudospurs 66–73 µm long. Lengths and proportions of leg segments table 37.

Hypopygium ( Fig. 50A–D ): tergite IX with 2 central setae; anal point completely covers the aedeagal complex; phallapodeme 35 µm long; sternapodeme 83 µm long; gonocoxite 125–127 µm long and 83–85 µm wide; gonostylus 130–135 µm long, with 5 apical teeth; tapered megaseta; HR 0.94–0.96; HV 2.47–2.55. Aedeagal complex: grooved aedeagal blade 38–40 µm long, base 8–9 µm, 9/10 4–5 µm; dorsal lobe pointed 18–19 µm long and base 15–20 µm; lateral lobe and basidorsal lobe present.

Figures

FIGURES 49A–F. Ablabesmyia martha sp. n.: adult male. (A) Wing; (B) Thorax; (C–E) P1 (C), P2 (D), P3 (E); (F) Abdomen.

FIGURES 50A–D. Ablabesmyia martha sp. n.: adult male. (A) Hypopygium: dorsal aspect; (B, C) Hypopygium: ventral aspect; (D) Aedeagal complex.