Ablabesmyia communiba 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 : 24-30

Ablabesmyia communiba Neubern sp. n.

( Figs 10–13 )

Type material. Holotype: ♂ with larval and pupal exuviae, Brazil, Mato Grosso, Cuiabá, Nova Mutum, Buriti farm, reservoir, 56°05`16``W – 13°05`04``S, 09.i.1999, H.F. Mendes — LEIA . Paratypes: 6 ♂♂ with larval and pupal exuviae, same data as holotype— LEIA ; 10 ♂♂ with pupal exuviae, same data as holotype— DZUP ; 7 ♂♂ with larval and pupal exuviae, São Paulo, Ribeirão Preto, USP , Monte Alegre lake , 47°81`03``W–21°17`75``S, 23.viii.1997, H.F. Mendes — LEIA ; 4 ♂♂ with pupal exuviae, same previous data— DZUP ; ♂, same previous data— DZUP ; ♂ with pupal exuviae, São Paulo, Luís Antônio, Estação Ecológica Jataí, Beija-Flor reservoir, 47°47`00``W – 21°34`00``S, 22.xi.2001, S. T . Strixino — LEIA ; 3 ♂♂ with larval and pupal exuviae, Paraná, Curitiba, Iguaçú river , 49°27`31``W –25°42`78``S, 22.iii.2007, C.S.N. Oliveira — LEIA ; 3 ♂♂ with larval and pupal exuviae, same previous data— DZUP; ♂, Amazonas, Manaus, Adolpho Ducke reserve , igarapé Água Fria , 59°56`00``W –02°59`70``S, 12.v.1995, light trap, M.F.P. Callisto & J.J.L. Fonseca,— LEIA ; 2 ♂♂, Amazonas, Manaus, Catalão , 60°01`10``W – 03°08`00``S, 07.vii.2008, C.S.N. Oliveira & L.M. Fusari — LEIA ; 2 ♂♂, same previous data— DZUP .

Diagnostic characters. A. communiba sp. n. differs from other species by combination of the following characters: Male —tapered megaseta, dorsal lobe absent, slender aedeagal blade, anal point present and gonostylus larger than the gonocoxite; Pupa —apex of aeropyle tube club-shaped, thoracic horn with spines only in the base and sides, dorsal pore in A IV between setae D 3 and D 5, genital sac 300–353 µm long, wing sheath without spots and with complete veins; Larva —head capsule expanded and with circular brown spots between the scars, cephalic chaetotaxy standard, ligula teeth in concave arch, palpal formula 0+2, ratio It/O 0.79–0.95and brown claws with serrated sides.

Etymology. From Latin, communibus, meaning common. Male (n = 5, unless otherwise stated):

Dimensions: Total length 3.87–4.61mm. Wing length 2.06–2.34 mm. Total length/wing length 1.88–2.00. Wing length/length of profemur 2.61–2.76.

Coloration ( Figs 10A–G , 11A, C ): wings, thorax and abdomen follow figures 10A, 10B and 10G. Legs (Fig.): P I, P II —femora with 3 bands, tibiae with 3 bands; P III —femur with 2 bands, tibia with 3 bands. Ratio of bands, related tibiae and tarsomeres 1 follow table 10. Hypopygium: gonocoxite apex and gonostylus base brown.

Head: antenna with 14 flagellomeres; AR 1.77–1.85; apical flagellomere 110–135 µm and subapical seta 30– 39 µm long; temporals 50–60; postoculars 9–11; coronal triangle 115–128 µm long and base 115–128 µm; clypeus bearing 35–45 setae, 93–118 µm long and 88–113 µm wide; labrum with 3 setae, 109–120 µm long and 58–65 µm wide; tentorium 158–175 µm long; cibarial pump 300–330 µm long and orifice 58–60 µm from apex; palpomeres 1– 5: 50–63; 110–123; 131–152; 130–143; 260–295 µm long; palpomere 3 with sensilla capitata 38–45 µm from base.

Wing ( Fig. 10A ): width/lenght 0.25–0.27; VR 0.78–0.84; C 1.90–2.18 mm long; Sc 1.12–1.34 mm long; m-cu 42 µm long and 610–680 µm from arculus; fr 750–812 µm from arculus; R 3 apex close to C; brachiolum with 4 setae; squama with 45–49 setae.

Thorax ( Fig.10B ): antepronotals 10–19; humerals 4–8; prealars 21–29; supraalar 1; scutelars 36.

Legs ( Fig. 10D–F ): P I —apex of tibia 53–58 µm wide and with apical pectinated spur 50–63 µm long, spur ratio 0.54–0.74; tarsomeres 1–2 with 2 pseudospurs 65–73 µm long. P II —apex of tibia 50–55 µm wide and with 2 apical pectinated spurs 63–70 and 23–53 µm long, spur ratio 0.52–0.71 and 0.42–0.58 respectively; tarsomeres 1–3 with 2, 3 or 6 apical pectinated pseudospurs 65–78 µm long. P III —coxa with 3 central microsetae; apex of tibia 55–60 µm wide and with 2 apical pectinated spurs 58–66 and 50–53 µm long, spurs ratio 0.60–0.67 and 0.54–0.59 respectively. Lengths and proportions of leg segments table 11.

Hypopygium ( Fig. 11A–E ): tergite IX with 3 central setae; anal point completely covers the aedeagal complex; phallapodeme 50 µm long; sternapodeme 115–137 µm long; gonocoxite 133–150 µm long and 88–90 µm wide; gonostylus 154–168 µm long, with 7 apical teeth; tapered megaseta; HR 0.79–0.98; HV 2.32–2.80. Aedeagal complex: grooved aedeagal blade 50–63 µm long, base 10–11 µm, 9/10 6 µm; dorsal lobe absent, lateral lobe present and basidorsal lobe absent.

Female: unknown.

Pupa (n = 5, unless otherwise stated):

Dimensions: male abdomen 3.25–3.49 mm long.

Coloration ( Fig. 12A–D ): exuviae brown, wing sheath without spots.

Cephalothorax ( Fig. 12A, B ): wing sheath 1.29–1.46 mm long and with complete veins; thoracic horn 419–506 µm long and 219–225 µm wide, lumen with hexagonal pattern, spines on the base and sides, apex of aeropyle tube club-shaped; thoracic comb with 10–17 conical teeth.

Abdomen ( Fig. 12C, D ): shagreen as small spines in arc, present in A I–VIII; scar in A I 169–231 µm long; A IV chaetotaxy follow figure 12C, dorsal pore between setae D 3 and D 5, A VII with 4 lateral setae, LS 1 139–175 µm long; A VIII with 5 lateral setae, LS 1 94–125 µm long; anal lobe 350–400 µm long, base 365–400 µm wide, with 2 anal macrosetae LS 1 163–200 µm long, LS 2 200–231 µm long, outer border with spines; genital sac shorter than the anal lobe, 300–353 µm long; GS/AL 0.85–0.88.

Larva (n = 5, unless otherwise stated):

Dimensions: head capsule 819–969 µm long and 625–875 µm wide.

Coloration ( Fig. 13A–D ): head capsule yellow with circular brown spot between the scars; postoccipital margin brown; ligula teeth brown; procercus yellow; posterior parapod with 16 claws, 3 hooked claws brown and 13 simple claws yellow.

Head Capsule ( Fig. 13A–C ): expanded, IC 0.68–0.84, chaetotaxy follow the figure 13A; AR 4.50–4.79, antennomeres 1,2-4: 450–513, 94–114 µm long; ring organ in A 1 250–300 µm from the base; maxillary palp with 2 segments, palpomeres 1-2: 43–49 and 37–42 µm long; palpal formula 0+2, P 1 /P 2 1.04–1.33, A 1 /P 1 9.14–11.92, A 2 /P 1 1.75–2.29; mandible 139–156 µm long, with campaniform sensillum 39–46 mm from the base, A 1 /MD 3.08–3.30; dorsomental tooth 42–62 mm long and far apart 69–77 mm, pseudoradula slightly granulated and with homogeneous width; ligula 90–94 mm long and 60–72 mm wide, with 5 teeth in concave arch, It/O 0.79–0.95; Mt/ O 0.74–0.92; It/Li 0.19–0.32; muscle attachment of ligula 26–35 µm long and 56–72 mm wide; bifid paraligula 48–51 µm long, pectin hypopharyngis with 17–23 teeth.

Abdomen ( Fig. 13D ): procercus 117–131 µm long and 34–39 µm wide, 7 anal setae 713–843 µm long; supraanal seta simple and 375–477 µm long; supraanal seta lenght/ anal setae lenght 0.53–0.59; posterior parapods with 13 simple claws, with the serrated sides and 3 hooked claws, with the serrated sides too, claw with truncated base absent, tip of posterior parapods with a little spines.

Figures

FIGURES 10A–G. Ablabesmyia communiba sp. n.: adult male. (A) Wing; (B) Thorax; (C) Lateral view; (D–F) P1 (D), P2 (E), P3 (F); (G) Abdomen.

FIGURES 11A–E. Ablabesmyia communiba sp. n.: adult male. (A, C) Hypopygium: dorsal aspect; (B) Hypopygium: ventral aspect; (D) Aedeagal complex; (E) Anal point.

FIGURES 12A–D. Ablabesmyia communiba sp. n.: pupa. (A) Wing; (B) Thoracic horn; (C) Abdominal segments 1-5, with chaetotaxy of segment 4, right: ventral aspect, left: dorsal aspect; (D) Abdominal segments 6-8 and anal lobe with male genital sac, right: ventral aspect, left: dorsal aspect.

FIGURES 13A–D. Ablabesmyia communiba sp. n.: larva. (A) Head with chaetotaxy, right: ventral aspect, left: dorsal aspect; (B) Maxillary palp; (C) Ligula, paraligula and pecten hypopharyngis; (D) posterior parapod.