Labrundinia fera 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 fera

description: Labrundinia fera Roback, 1987
(Fig. 12)
Labrundinia fera 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, 25.ii.1972, N. R. Foster (ANSP).
Diagnostic characters. Labrundinia fera differs from other Labrundinia species by the combination of the following characters. Adult male: abdominal tergite I brown, T II–VI with continuous brown transverse band near proximal margin, T VII–VIII almost completely brown; hypopygium with apical ½ brown, sternapodeme without anterior process.
Description. Adult male (n = 1)
Size. Total length 2.4 mm. Wing length 1.2 mm. Total length/wing length 2.00. Wing length/ profemur length 2.99.
Coloration. Head dark brown with brown occipital margin; pedicel and antenna brown; maxillary palp pale. Thorax brown with dark scutum; antepronotum pale. Wing membrane transparent without any marking. Legs pale. Femur I–III with apex brown. Tibia I with apex brown, Ti II–III brown. Tarsomere 1 brown, tarsomeres 2–5 pale. Abdominal tergite I brown, T II–VI with continuous brown transverse band near proximal margin, T VII–VIII almost completely brown; hypopygium with apical 0.50 brown (Fig. 12L).
Head (Figs 12A–E). Temporal setae 15, uniserial (Fig. 12B). Eye ratio 0.75. Tentorium (Fig. 12C) 129 Μm long. Clypeus 153 Μm long, 102 Μm wide at largest part, bearing 22 setae. Cibarial pump not measurable (Fig. 12D), with anterior margin concave. Lengths of palpomeres 1–4 (in Μm): 37; 53; 129; 131; palpomeres 5 broken off. Antennal flagellum 386 Μm long, diameter of pedicel 118 Μm, apical setae single (Fig. 12E), AR 1.14.
Thorax. Antepronotum with 2 lateral setae. Acrostichals 42, biserial, diverging evenly posteriorly, starting close to antepronotum and almost reaching scutellum; dorsocentrals 20, irregularly uniserial; prealars 7; supraalars 3. Anapleural suture ratio 0.41. Scutellum with transverse row of 10 setae and group of numerous fine anterior setae.
Wing (Fig. 12F). Width 0.4 mm. Costa 1.0 mm long, not produced beyond R4+5. R2+3 absent. VR 0.74. WW 0.30. Brachiolum with 2 setae. Squama setiferous.
Legs (Figs 12G–K). Fore leg: width at apex of tibia 47 Μm (Fig. 12G), tibia with single, apical and pectinate spur 14 Μm long (Fig. 12H), with three lateral teeth and two preapical setae; ta1-4 without any preapical pseudospurs. Mid leg: width at apex of tibia 55 Μm long (Fig. 12I), tibia with single, apical and pectinate spur 26 Μm long with three lateral teeth (Fig. 12J) and two preapical setae; ta1-4 each with one preapical pseudospurs. Hind leg: width at apex of tibia 47 Μm long (Fig. 12K), tibia without spur; comb with 8 bristles; ta1-4 without any preapical pseudospurs. Claws slender, hooked; pulvilli absent. Lengths and proportion of leg segments as in Table 9.
fe ti ta1 ta2 ta3
p1 394 453 296 171 125 p2 594 468 555 250 133 p3 524 586 563 266 195
ta4 ta5 LR BV SV p1 100 66 0.65 2.50 2.85 p2 101 86 1.18 2.83 1.92 p3 125 78 0.96 2.51 1.97 Hypopygium (Fig. 12M). Tergite IX arched, with 13 posterior setae. Membranous anal point trapezoidal. Phallapodeme 60 Μm long. Sternapodeme with anterior process absent. Gonocoxite cylindrical, 111 Μm long, 59 Μm wide. GcR 1.90. Gonostylus simple and slender, 69 Μm long; megaseta, 10 Μm long. HR 1.59. HV 3.39.
Adult female, pupa and larva. Unknown.
Remarks. Adults of Labrundinia fera can easily be separated from all other Labrundinia species by its abdominal coloration; tergite VI–VIII each with a transverse band and hypopygium brown in apical ½. Labrundinia fera has been recorded only from its type locality in Colombia. The adults were 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 in Roback could not be associated with the adults here described, thus we regard the immatures of L. fera as 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 31-33, DOI: 10.11646/zootaxa.3769.1.1, http://zenodo.org/record/250728