<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 diversa Neubern sp. n. ( Fig. 20 ) Type material. Holotype : ♂ , Brazil , São Paulo , USP , Monte Alegre pond, 47°81`03``W–21°17`75``S, 23.iii.1997 , H.F. Mendes – LEIA . Paratypes : ♂ , same data as holotype, 21.ix.2000 , H.F. Mendes – LEIA ; ♂ , same data as holotype, 30.v.1997 , H.F. Mendes – DZUP ; 3 ♂♂ , same data as holotype, 07.vi.1999 , H.F. Mendes – DZUP ; ♂ , Mato Grosso , Cuiabá , Nova Mutum , Buriti farm, 56°05`16``W – 13°05`04``S , 30.i.1997 , H.F. Mendes – LEIA . Diagnostic characters. aedeagal complex with 2 dorsal lobes, both with fringe, grooved aedeagal blade and with membranous blade lateral to aedeagal blade will separate the male of A . diversa sp. n. from all other species. Etymology. From Latin, diversae , meaning different. Male (n = 5, unless otherwise stated): Dimensions : Total length 4.65–5.74 mm . Wing length 2.46–2.77 mm . Total length/wing length 1.69–2.13. Wing length/length of profemur 2.31–2.69. Coloration ( Fig. 20A, E–G ): abdomen follow figure 20H. Legs: P I , P II , P III –femora with 1 band, tibiae with 3 bands. Ratio of bands, related tibiae and tarsomeres 1 follow table 16. Hypopygium yellow. Head : antenna with 14 flagellomeres; AR 2.71–2.91; apical flagellomere 123–125 µm and subapical seta 35– 48 µm long; temporals 35 postoculars 7–8; coronal triangle 135–142 µm long and base 110–127 µm; clypeus bearing 37–50 setae, 123–137 µm long and 113–138 µm wide; labrum with 5 setae, 115–125 µm long and 75–85 µm wide; tentorium 185–227 µm long; cibarial pump 310–360 µm long and orifice 54–58 µm from apex; palpomeres 1–5 : 58–65; 106–125; 135–175; 170–195; 330–365 µm long; palpomere 3 with sensilla capitata 43–53 µm from base. FIGURES 20A–H. Ablabesmyia diversa sp. n. : adult male. (A) Hypopygium: dorsal aspect; (B, C) Hypopygium: ventral aspect; (D) Aedeagal complex; (E–G) P1 (E), P2 (F), P3 (G); (H) Abdomen. TABLE 16. Ratio of bands, related tibiae and tarsomeres 1 of A. diversa sp. n. , ♂, (n=5).

A/B	LMB/LBCB	Y/Z
P I	0.54–0.58	0.58–0.62	0.44–0.51
P II	0.43–0.45	0.58–0.66	0.45–0.48
P III	0.53	0.82–0.84	0.43–0.45

Wing : width/lenght 0.26–0.28; VR 0.80–0.86; C 2.15–2.53 mm long; Sc 1.12–1.43 mm long; m-cu 38 µm long and 660–770 µm from arculus; fr 830–900 µm from arculus; R 3 apex close to C; brachiolum with 3 setae; squama with 48–53 setae. Thorax : antepronotals 18; humerals 4–9; prealars 74–93; supraalar 1; scutelars 30–32. Legs ( Fig. 20E–G ): P I –apex of tibia 73–90 µm wide and with apical pectinated spur 73–88 µm long, spur ratio 0.57–0.58; tarsomeres 1–3 with 1 or 2 pseudospurs 67–75 µm long. P II –apex of tibia 63–70 µm wide and with 2 apical pectinated spurs 68–78 and 60–68 µm long, spur ratio 0.57–0.60 and 0.53–0.67 respectively; tarsomeres 1–2 with 1 or 2 apical pectinated pseudospurs 65–77 µm long. P III –coxa with 5 central microsetae; apex of tibia 70–80 µm wide and with 2 apical pectinated spurs 65–83 and 65–73 µm long, spurs ratio 0.51–0.59 and 0.55–0.59 respectively; tarsomeres with 1 pseudospur 66–69 µm long. Lengths and proportions of leg segments table 17. 1–2 TABLE 17. Lengths (in µm) and proportions of leg segments in A. diversa sp. n. , ♂, (n=5).

fe	ti	ta1	ta2	ta3	ta4
P I	1000–1125	1187.5–1328	969–1094	600–687.5	440–530	300–360
P II	1125–1250	1312–1421	998–1094	570–580	449–460	288–330
P III	1094–1187.5	1344–1656	1251–1312.5	710–740	550–700	350–400

TABLE 17. (Continued)

ta5	LR	BV	SV	BR
P I	170–190	0.76–0.82	1.90–2.22	2.24–2.39	1.8–2.3
P II	171–180	0.76–0.77	2.32–2.48	2.44–2.47	1.6–1.8
P III	190–210	0.79–0.94	1.86–2.22	2.01–2.17	1.6–2.1

Hypopygium ( Fig. 20A–D ): tergite IX with 6 central setae; anal point completely covers the aedeagal complex; phallapodeme 80–108 µm long; sternapodeme 170–188 µm long; gonocoxite 186–210 µm long and 148–163 µm wide; gonostylus 218–238 µm long, with 10 apical teeth; tapered megaseta; HR 0.82–0.92; HV 2.11–2.65. Aedeagal complex: grooved aedeagal blade 38–47 µm long, base 10–12.5 µm, 9/10 8 µm; dorsal lobe with fringe, 10–15 µm long, base 13–18 µm; membranous blade, lateral lobe and basidorsal lobe present. Female and immatures. Unknown.