Labrundinia opela Roback 1987
Creators: name: Silva, Fabio Laurindo Da
name: Fonseca-Gessner, Alaide Aparecida
name: Ekrem, Torbjørn
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Chironomidae
Labrundinia
Labrundinia opela

description: Labrundinia opela Roback, 1987
(Fig. 46)
Labrundinia opela Roback, 1987: 218 (description of male).
Material examined. Type material: Holotype male, Colombia: Departamento del Meta, Puerto López, Laguna Mozambique, 16 km s. w. of Puerto López, 6.iii.1971, N. R. Foster (ANSP).
Diagnostic characters. Labrundinia opela differs from other Labrundinia species by the combination of the following characters. Adult male: abdominal tergites I–II pale, T III–V with continuous brown transverse band near proximal margin, T VI about 66 % brown, T VII–VIII almost completely brown; hypopygium pale, sternapodeme with reduced anterior process.
Description. Adult male (n = 1 unless otherwise stated)
Size. Total length 2.2 mm. Wing length 1.2 mm. Total length/wing length 1.81. Wing length/ profemur length 3.28.
Coloration. Head brown with dark brown occipital margin; pedicel and antenna brown; maxillary palp pale. Thorax brown with dark scutum; antepronotum pale; supraalar callus dark brown. Wing membrane transparent without any marking. Legs pale brown. Femur I–III pale. Tibia I–III pale. Abdominal tergites I–II pale, T III–V with continuous brown transverse band near proximal margin, T VI about 0.66 % brown, VII–VIII almost completely brown; hypopygium pale (Fig. 46L).
Head (Figs 46A–E). Temporal setae 12, uniserial (Fig. 46B). Eye ratio 1.02. Tentorium (Fig. 46C) 141 Μm long. Clypeus not measurable, bearing 13 setae. Cibarial pump not measurable (Fig. 46D), with anterior margin concave. Lengths of palpomeres 1–3 (in Μm): 45; 104; 116; palpomeres 4 and 5 broken off. Antennal flagellum 718 Μm long, diameter of pedicel 98 Μm, apical setae single (Fig. 46E), AR 1.31.
Thorax. Antepronotum with 2 lateral setae. Acrostichals 42, biserial, diverging evenly posteriorly, starting close to antepronotum and almost reaching scutellum; dorsocentrals 22, irregularly uniserial; prealars 9; supraalars 2. Anapleural suture ratio 0.51. Scutellum with transverse row of 8 setae and group of numerous fine anterior setae.
Wing (Fig. 46F). Width 0.3 mm. Costa 1.0 mm long. R2+3 present. VR 0.73. WW 0.27. Brachiolum with 2 setae. Squama setiferous.
Legs (Figs 46G–K). Fore leg: width at apex of tibia 31 Μm (Fig. 46G), tibia with single, apical and pectinate spur 12 Μm long (Fig. 46H), with four and two preapical setae; preapical pseudospurs not observed. Mid leg: width at apex of tibia 31 Μm long (Fig. 46I), tibia with single, apical and pectinate spur 20 Μm long, number of teeth not observed (Fig. 46J) and two preapical setae; preapical pseudospurs not observed. Hind leg: width at apex of tibia 31 Μm long (Fig. 46K), tibia without spur; comb with 6 bristles; preapical pseudospurs not observed. Pulvilli absent. Lengths and proportion of leg segments as in Table 30.
fe ti ta1 ta2 ta3 p1 367 406 – – – p2 547 418 – – – p3 484 555 – – –
ta4 ta5 LR BV SV p1 – – – – – p2 – – – – – p3 – – – – – Hypopygium (Fig. 46M). Tergite IX arched, with 9 posterior setae. Membranous anal point slightly triangular. Phallapodeme 49 Μm long. Sternapodeme with reduced anterior process. Gonocoxite cylindrical, 125 Μm long, 61Μm wide. GcR 2.06. Gonostylus simple, concave apically, 82 Μm long; megaseta, 10 Μm long. HR 1.52. HV 2.64.
Adult female, pupa and larva. Unknown.
Remarks. Adult males of Labrundinia opela are quite similar to L. paravirescens, but can be separated by the transverse band on the abdominal tergites VI–VIII, which contrast the completely brown abdominal tergites VI– VIII in L. paravirescens. Labrundinia opela has been recorded only from its type locality in Colombia. Only one adult was collected in the area of Laguna Mozambique, which is characterized by the presence of Scirpus cubensis and Pastalum repens along the shore and pH around 4.5. The larvae from this area described by Roback (1987a) could not with certainty be associated with the adults. Thus, the immatures of L. opela remain unknown.
description: Published as part of Silva, Fabio Laurindo Da, Fonseca-Gessner, Alaide Aparecida & Ekrem, Torbjørn, 2014, A taxonomic revision of genus Labrundinia Fittkau, 1962 (Diptera: Chironomidae: Tanypodinae), pp. 1-185 in Zootaxa 3769 (1) on pages 97-99, DOI: 10.11646/zootaxa.3769.1.1, http://zenodo.org/record/250728