Labrundinia opela Roback, 1987

Silva, Fabio Laurindo Da, Fonseca-Gessner, Alaide Aparecida & Ekrem, Torbjørn, 2014, A taxonomic revision of genus Labrundinia Fittkau, 1962 (Diptera: Chironomidae: Tanypodinae), Zootaxa 3769 (1), pp. 1-185 : 97-99

publication ID	https://doi.org/ 10.11646/zootaxa.3769.1.1
publication LSID	lsid:zoobank.org:pub:705567C6-C912-4A19-9DE2-726254E17076
DOI	https://doi.org/10.5281/zenodo.5621071
persistent identifier	https://treatment.plazi.org/id/676987A8-B762-FFB3-FF29-FEB7FAA7FDE6
treatment provided by	Plazi
scientific name	Labrundinia opela Roback, 1987
status

Treatment

Labrundinia opela Roback, 1987 View in CoL

( Fig. 46 View FIGURES 46 A – M )

Labrundinia opela Roback, 1987: 218 View in CoL (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 View FIGURES 46 A – M ).

Head ( Figs 46A–E View FIGURES 46 A – M ). Temporal setae 12, uniserial ( Fig. 46B View FIGURES 46 A – M ). Eye ratio 1.02. Tentorium ( Fig. 46C View FIGURES 46 A – M ) 141 Μm long. Clypeus not measurable, bearing 13 setae. Cibarial pump not measurable ( Fig. 46D View FIGURES 46 A – M ), 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 View FIGURES 46 A – M ), 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 View FIGURES 46 A – M ). 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 View FIGURES 46 A – M ). Fore leg: width at apex of tibia 31 Μm ( Fig. 46G View FIGURES 46 A – M ), tibia with single, apical and pectinate spur 12 Μm long ( Fig. 46H View FIGURES 46 A – M ), with four and two preapical setae; preapical pseudospurs not observed. Mid leg: width at apex of tibia 31 Μm long ( Fig. 46I View FIGURES 46 A – M ), tibia with single, apical and pectinate spur 20 Μm long, number of teeth not observed ( Fig. 46J View FIGURES 46 A – M ) and two preapical setae; preapical pseudospurs not observed. Hind leg: width at apex of tibia 31 Μm long ( Fig. 46K View FIGURES 46 A – M ), 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 View FIGURES 46 A – M ). 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.