Ablabesmyia arquata 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 : 9-10

publication ID

https://doi.org/ 10.11646/zootaxa.3733.1.1

publication LSID

lsid:zoobank.org:pub:EE758378-9459-4970-8D59-5258597A0E28

persistent identifier

https://treatment.plazi.org/id/03816D3D-FFDE-FFE5-858B-A18EBE7B9280

treatment provided by

Felipe

scientific name

Ablabesmyia arquata Neubern
status

sp. nov.

Ablabesmyia arquata Neubern sp. n.

( Figs 1 View FIGURES 1 , 2 View FIGURES 2 )

Type material. Holotype: ♂, Brazil, Santa Catarina, Nova Teutônia , 52°42`42``W – 27°16`36``S, x.1970, F. Plaumann — LEIA GoogleMaps . Paratype: ♂, same data as holotype— MZSP GoogleMaps .

Diagnostic characters. A. arquata sp. n. differs from other species mainly due to sharply curved blade aedeagal; truncated dorsal lobe.

Etymology. From Latin, arquatus, meaning arched, referring to the shape of the aedeagal blade.

Male (n = 2, unless otherwise stated): Dimensions: Total length 4.68–4.73 mm. Wing length 2.56–2.59 mm. Total length/wing length 1.81–1.85. Wing length/length of profemur 2.70–2.78.

Coloration ( Fig. 1A–F View FIGURES 1 , 2A View FIGURES 2 ): wings and thorax follow figures 1A and 1B, respectively. Legs: P I –femur with 3 bands, tibia with 4 bands, the second small and incomplete band; P II, P III –femora with 2 bands, tibiae with 3 bands. Ratio of bands, related tibiae and tarsomeres 1 follow table 2. Hypopygium: gonocoxite apex and gonostylus base brown.

Head: antenna with 14 flagellomeres; AR 1.77–1.78; apical flagellomere 142–143 µm long and subapical seta 41–43 µm long; temporals 43–45, postoculars 16; coronal triangle 150–153 µm long and base 91–93 µm; clypeus bearing 44–45 setae, 130–140 µm long and 118 µm wide; labrum with 5 setae, 115–135 µm long and 88 µm wide; tentorium 183–200 µm long; cibarial pump 390–399 µm long and orifice 70 µm from apex; palpomeres 1–5: 63–67; 135–140; 170–190; 178–188; 245–247 µm long; palpomere 3 with sensilla capitata 54–58 µm from base.

Wing ( Fig. 1A View FIGURES 1 ): width/lenght 0.28 (n=1); VR 0.82–0.88; C 2.37–2.39 mm long; Sc 1.06–1.15 mm long; m-cu 37 µm long and 700–720 µm from arculus; fr 820–850 µm from arculus; R 3 apex close to C; brachiolum with 3 setae; squama with 39 (n=1) setae.

Thorax ( Fig. 1B View FIGURES 1 ): antepronotals 18; scutelars not discernible; humerals 11–14; prealars 25–28; supraalar 1.

Legs ( Fig. 1D–F View FIGURES 1 ): P I —apex of tibia 63 µm wide and with apical pectinated spur 65–72 µm long, spur ratio 0.54–0.61; tarsomeres 1–2 with 2 pseudospurs 55–66 µm long. P II —apex of tibia 59–60 µm wide and with 2 apical pectinated spurs 63–65 and 55–58 µm long, spur ratio 0.65–0.70 and 0.63–0.64 respectively; tarsomeres 1–2 with 3, 6 or 7 pseudospurs 55–79 µm long. P III —coxa without central microsetae; apex of tibia 77 µm wide and with 2 apical pectinated spurs 73–77 and 58–65 µm long, spur ratio 0.57 and 0.57–0.60 respectively; tarsomeres 1–3 with 2 or 10 pseudospurs 73–85 µm long. Lengths and proportions of leg segments table 3.

ta 5 LR BV SV BR

P I 174–180 0.79–0.80 1.97–2.0 2.21–2.28 2.0–2.10

P II 160–170 0.71 2.39–2.45 2.72–2.78 1.4–1.5

P III 161–170 0.76–0.84 1.99–2.15 2.03–2.28 2.0

Hypopygium ( Fig. 2A–D View FIGURES 2 ): tergite IX with 2 central setae; anal point absent; phallapodeme 42 µm long; sternapodeme 113–127 µm long; gonocoxite 175–208 µm long and 113–128 µm wide; gonostylus 175–200 µm long, with 5 apical teeth; tapered megaseta; HR 1.0; HV 2.34–2.78. Aedeagal complex: grooved and arched aedeagal blade 50–51 µm long, base 13–15 µm, 9/10 8–9 µm; truncated dorsal lobe, 10 µm long, base 8 µm; lateral lobe and basidorsal lobe present.

Female and immatures. Unknown.

MZSP

Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Chironomidae

Genus

Ablabesmyia

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