Ablabesmyia separata 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 : 109-110

Ablabesmyia separata Neubern sp. n.

( Figs 66 , 67 )

Type material. Holotype: ♂, Brazil, Bahia, Correntina, Correntina river , 44°38`13``W – 13°20`34``S, 01.xi.2008, L.M. Fusari — LEIA.

Diagnostic characters. the species differs from other by dorsal lobe absent and aedeagal blades are small and separated from each other.

Etymology. From Latin, separatum, meaning separate, referring to the distance between the aedeagal blades.

Male (n = 1): Dimensions: Abdomen length 2.33 mm. Wing length 1.68 mm. Wing length/length of profemur 2.28.

Coloration ( Figs 66A–F , 67A ): wings, thorax and abdomen follow figures 66A, 66B and 66F, respectively. Legs: P I —femur with 4 bands, tibia with 5 bands, third band small and incomplete; P II, P III —femora with 4 bands, tibiae with 4 bands. Ratio of bands, related tibiae and tarsomeres 1 follow table 50. Hypopygium yellow.

Head: antenna with 14 flagellomeres; AR 1.76; apical flagellomere 106 µm long and subapical seta 37 µm long; temporals 92; postoculars 16; coronal triangle 169 µm long and base 117 µm; clypeus bearing 30 setae, 103 µm long and 106 µm wide; labrum with 4 setae, 109 µm long and 80 µm wide; tentorium 180 µm long; cibarial pump 329 µm long and orifice 74 µm from apex; palpomeres 1–5 lengths (µm): 46; 105; 149; 185; 245; palpomere 3 with sensilla capitata 57 µm from base.

Wing ( Fig. 66A ): width/lenght 0.34; VR 0.89; C 1.50 mm long; Sc 0.66 mm long; m-cu 46 µm long and 481 µm from arculus; fr 544 µm from arculus; R 3 apex close to C; brachiolum with 3 setae; squama with 45 setae.

Thorax ( Fig. 66B ): humerals 4; prealars 13; supraalar 1; scutelars 33.

Legs ( Fig. 66C–E ): P I —apex of tibia 65 µm wide and with apical pectinated spur 55 µm long, spur ratio 0.58; tarsomeres 1-2 with 2 pseudospurs 54–63 µm long. P II —apex of tibia 63 µm wide and with 2 apical pectinated spurs 45 and 55 µm long, spur ratio 0.72 and 0.50 respectively; tarsomeres 1–3 with 1 or 2 pseudospurs 44–55 µm long. P III —apex of tibia 65 µm wide and with 2 apical pectinated spurs 66 and 46 µm long, spurs ratio 0.47 and 0.57 respectively; tarsomeres 1–3 with 2 pseudospurs 62–74 µm long. Lengths and proportions of leg segments table 51.

Hypopygium ( Fig. 67A–D ): tergite IX with 2–3 central setae; anal point absent; phallapodeme 65 µm long; sternapodeme 100 µm long; gonocoxite 146 µm µm long and 108 µm wide; gonostylus 142 µm long, with 5 apical teeth; tapered megaseta; HR 1. Aedeagal complex: smooth aedeagal blade 22 µm long, base 12 µm, 9/10 3 µm; dorsal lobe absent; lateral lobe and basidorsal lobe present.

Female and immatures: unknown.

Figures

FIGURES 66A–F. Ablabesmyia separata sp. n.: adult male. (A) Wing; (B) Thorax; (C–E) P1 (C), P2 (D), P3 (E); (F) Abdomen.

FIGURES 67A–D. Ablabesmyia separata sp. n.: adult male. (A) Hypopygium: dorsal aspect; (B, C) Hypopygium: ventral aspect; (D) Aedeagal complex.