Ablabesmyia jaquirana 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 : 71-74

Ablabesmyia jaquirana Neubern sp. n.

( Figs 41 , 42 )

Type material. Holotype: ♂, Brazil, Rio Grande do Sul, Jaquirana, Passo da Ilha, Tainha river , 50°21`28``W – 28°53`06``S, xi.2007, L.M. Fusari — LEIA.

Diagnostic characters. A. jaquirana sp. n. differs from other species by the combination of the following characters: labrum with 4 setae, front femur with 3 bands, middle tibia with 4 bands, gonostylus with 5 apical teeth, tapered megaseta, grooved aedeagal blade, truncated dorsal lobe.

Etymology. Named after type locality.

Male (n = 1): Dimensions: Wing length/length of profemur 2.56.

Coloration ( Figs 41A–E , 42A ): thorax and abdomen follow figures 41A and 41E, respectively. Legs: P I — femora with 3 bands, tibiae with 4 bands; P II —femora with 2 bands, tibiae with 4 bands; P III —femora with 3 bands, tibiae with 3 bands. Ratio of bands, related tibiae and tarsomeres 1 follow table 30. Hypopygium: gonocoxite apex and gonostylus base brown.

Head: antenna with 14 flagellomeres; AR 1.70; apical flagellomere 141µm and subapical seta 42 µm long; temporals 57; postoculars 14; coronal triangle 151 µm long and base 92 µm; clypeus bearing 38 setae, 132 µm long and 122 µm wide; labrum with 4 setae, 126 µm long and 86 µm wide; tentorium 205 µm long; cibarial pump 415 µm long and orifice 60 µm from apex; palpomeres 1–5: 66; 146; 191; 181; 300 µm long; palpomere 3 with sensilla capitata 55 µm from base.

Wing: width/lenght 0.27; VR 0.81; C 2.25 mm long; Sc 1.06 mm long; m-cu 35 µm long and 675 µm from arculus; fr 838 µm from arculus; R 3 apex close to C; brachiolum with 4 setae; squama with 42 setae.

Legs ( Fig. 41B–D ): P I —apex of tibia 62 µm wide and with apical pectinated spur 82 µm long, spur ratio 0.66. P II —apex of tibia 62 µm wide and with 2 apical pectinated spurs 66 and 67 µm long, spurs ratio 0.53 and 0.50 respectively; tarsomeres with 2 pseudospurs 60–77 µm long. P III —coxa with 5 central microsetae; apex of tibia 75 µm wide and with 2 apical pectinated spurs 68 and 72 µm long, spurs ratio 0.60 and 0.59 respectively. Lengths and proportions of leg segments table 31.

1–3

Hypopygium ( Fig. 42A–D ): tergite IX with 2 central setae; anal point absent; phallapodeme 63 µm long; sternapodeme 111 µm long; gonocoxite 192 µm long and 131 µm wide; gonostylus 203 µm long, with 5 apical teeth; tapered megaseta; HR 0.95. Aedeagal complex: grooved aedeagal blade 51 µm long and base 15 µm, 9/10 6 µm; truncated dorsal lobe 26 µm long and base 15 µm, lateral lobe and basidorsal lobe present.

Female and immatures: unknown.

Figures

FIGURES 41A–E. Ablabesmyia jaquirana sp. n.: adult male. (A) Thorax; (B–D) P1 (B), P2 (C), P3 (D); (E) Abdomen.

FIGURES 42A–D. Ablabesmyia jaquirana sp. n.: adult male. (A) Hypopygium: dorsal aspect; (B, C) Hypopygium: ventral aspect; (D) Aedeagal complex.