Ablabesmyia suiamissu 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 : 118-122

Ablabesmyia suiamissu Neubern sp. n.

( Figs 72 , 73 )

Type material. Holotype: ♂, Brazil, Mato Grosso, Ribeirão Cascalheira, Suiamissu river, Campina Verde farm, 51°53`47``W – 12°55`59``S, 10.x.2007, light trap, L.C. Pinho — LEIA . Paratypes: 2 ♂♂, same data as holotype— LEIA ; 14 ♂♂, same data as holotype— DZUP .

Diagnostic characters. A. suiamissu sp. n. differs from other species by the combination of the following characters: labrum with 2 setae, antepronotal lobe with 7 setae, pigmentation of front and middle femora and front tibia, expanded megaseta, aedeagal complex with only 1 grooved aedeagal blade, dorsal lobe present.

Etymology. Named after Suiamissu river.

Male (n = 5, unless otherwise stated): Dimensions: Total length 2.41–3.02 mm. Wing length 1.25–1.56 mm. Total length/wing length 1.93–1.95. Wing length/length of profemur 2.99–3.04.

Coloration ( Figs 72A–E , 73A ): wings and abdomen follow figures 72A and 72E, respectively. Legs ( Fig. 72B– D ): P I, P III —femora with 3 bands, tibiae with 3 bands; P II —femora with 2 bands, tibiae with 3 bands. Ratio of bands, related tibiae and tarsomeres 1 follow table 54. Hypopygium: gonocoxite apex and gonostylus base brown.

Head: antenna with 14 flagellomeres; AR 1.73–1.77; apical flagellomere 123–127 µm and subapical seta 27– 33 µm long; temporals 31–35; postoculars 9; coronal triangle 105–131 µm long and base 92–115 µm; clypeus bearing 35–39 setae, 108–134 µm long and 85–106 µm wide; labrum with 2 setae, 94–117 µm long and 46–58 µm wide; tentorium 170–174 µm long; cibarial pump 269–333 µm long and orifice 46–48 µm from apex; palpomeres 1–5: 37–46; 69–86; 88–109; 85–106; 154–191 µm long; palpomere 3 with sensilla capitata 34–40 µm from base.

Wing ( Fig. 72A ): width/lenght 0.35–0.37; VR 0.83; C 1.12–1.40 mm long; Sc 0.52–0.66 mm long; m-cu 38–48 µm long and 317–396 µm from arculus; fr 384–479 µm from arculus; R 3 apex close to C; brachiolum with 3 setae; squama with 36–38 setae.

Thorax: antepronotals 7; humerals 6; prealars 22–27; supraalar 1; scutelars 45–50.

Legs ( Fig. 72B–D ): P I –apex of tibia 37–43 µm wide and with apical pectinated spur 39–44 µm long, spur ratio 0.58–0.64; tarsomeres 1–2 with 2 pseudospurs 46–59 µm long. P II –apex of tibia 41–44 µm wide and with 2 apical pectinated spurs 40–42 and 20–22 µm long, spurs ratio 0.57–0.60 and 0.50–0.53 respectively; tarsomeres 1–3 with 2 pseudospurs 36–54 µm long. P III —coxa with 5 central microsetae; apex of tibia 43–51 µm wide and with 2 apical pectinated spurs 38–43 and 25–33 µm long, spurs ratio 0.67–0.70 and 0.52–0.73 respectively; tarsomeres 1–3 with 2 pseudospurs 59–47 µm long. Lengths and proportions of leg segments table 55.

Hypopygium ( Fig. 73A–D ): tergite IX with 2 central setae; anal point covers partially the aedeagal complex; phallapodeme 28–35 µm long; sternapodeme 43–54 µm long; gonocoxite 94–117 µm long and 53–65 µm wide; gonostylus 95–118 µm long and with 10 apical teeth; expanded megaseta; HR 0.99–1.03; HV 2.25–2.56. Aedeagal complex: grooved aedeagal blade with curved apex 26–32 µm long and base 6–7 µm, 9/10 4 µm; dorsal lobe with fringe, 12–15 µm long and base 8–9 µm, lateral lobe and basidorsal lobe present.

Female and immatures: unknown.

Figures

FIGURES 72A–E. Ablabesmyia suiamissu sp. n.: adult male. (A) Wing; (B–D) P1 (B), P2 (C), P3 (D); (E) Abdomen.

FIGURES 73A–D. Ablabesmyia suiamissu sp. n.: adult male. (A) Hypopygium: dorsal aspect; (B, C) Hypopygium: ventral aspect; (D) Aedeagal complex.