<p> <strong> Neotropical <em> Ablabesmyia </ em> Johannsen (Diptera: Chironomidae, Tanypodinae) – Part I </ strong> </ p> Author Oliveira, Caroline Silva Neubern De csneubern@gmail.com Author Silva, Mário Antonio Navarro Da Author Gessner, Alaíde Aparecida Fonseca text Zootaxa 2013 2013-11-04 3733 1 1 123 http://dx.doi.org/10.11646/zootaxa.3733.1.1 journal article 10.11646/zootaxa.3733.1.1 1175-5326 5268657 EE758378-9459-4970-8D59-5258597A0E28 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 . 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. 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. TABLE 54. Ratio of bands, related tibiae and tarsomeres 1 of A. suiamissu sp. n. , ♂, (n=5).

A/B	LMB/LBCB	Y/Z
P I	0.61–0.62	0.88–0.92	0.37–0.38
P II	0.54	1.0–1.02	0.32–0.33
P III	0.48–0.50	0.32–0.33	0.34–0.35

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. TABLE 55. Lengths (in µm) and proportions of leg segments in A. suiamissu sp. n. , ♂, (n=5).

fe	ti	ta1	ta2	ta3	ta4
P I	419–522	456–569	406–507	250–312	175–218	131–164
P II	519–647	481–600	487.5–608.4	237.5–296	187.5–234	119–148
P III	456–569	575–718	581–725	306–382	231–288	162–202

TABLE 55. (Continued)

ta5	LR	BV	SV	BR
P I	88–109	0.89–0.93	1.95–1.99	2.13–2.15	3.2–4.3
P II	94–117	0.97–1.01	2.28–2.33	2.05	4.0–4.6
P III	94–117	1.01–1.02	1.99–2.03	1.76–1.77	4.4–4.6

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.