Labrundinia parabecki 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 parabecki

description: Labrundinia parabecki Roback, 1987
(Fig. 48)
Labrundinia parabecki Roback, 1987: 215 (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). Paratype: 1 male same data as holotype (ANSP).
Diagnostic characters. Labrundinia parabecki differs from other Labrundinia species by the combination of the following characters. Adult male: abdomen completely brown, tergites II–IV with darker cruciate marks; hypopygium brown, sternapodeme with distinct anterior process.
Description. Adult male (n = 2 unless otherwise stated)
Size. Total length 2.4 (1) mm. Wing length 1.2–1.3 mm. Total length/wing length 1.91 (1). Wing length/ profemur length 3.06–3.39.
Coloration. Head dark brown with 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. Femur I pale, Fe II–III pale brown. Tibia I–III apex brown. Tarsomere 1–5 pale to pale brown. Abdomen completely brown, tergites II–IV with darker cruciate marks; hypopygium brown (Fig. 48L).
Head (Figs 48A–E). Temporal setae 13, uniserial (Fig. 48B). Eye ratio 1.06–1.2. Tentorium (Fig. 48C) 137– 143 Μm long. Clypeus 108 (1) Μm long, 76 (1) Μm wide at largest part, bearing 17–18 setae. Cibarial pump 169 (1) Μm long (Fig. 48D), with anterior margin concave. Lengths of palpomeres 1–5 (in Μm): 29–35; 55; 108–118; 147– 149; 196–222. Antennal flagellum 720–776 Μm long, diameter of pedicel 103–118 Μm, apical setae single (Fig. 48E), AR 1.26–1.34.
Thorax. Antepronotum with 6 lateral setae. Acrostichals 42 (1), biserial, diverging evenly posteriorly starting close to antepronotum and almost reaching scutellum; dorsocentrals 28–30, irregularly biserial; prealars 11–12; supraalars 2. Anapleural suture ratio 0.39. Scutellum with transverse row of 11 (1) setae and group of numerous fine anterior setae.
Wing (Fig. 48F). Width 0.3–0.4 mm. Costa 0.9–1.0 mm long. R2+3 present. VR 0.68–0.77. WW 0.28–0.30. Brachiolum with 2 setae. Squama setiferous.
Legs (Figs 48G–K). Fore leg: width at apex of tibia 39 Μm (Fig. 48G), tibia with single, apical and pectinate spur 13 Μm long (Fig. 48H), with three lateral teeth and two preapical setae; ta1-4 without any preapical pseudospurs. Mid leg: width at apex of tibia 31–39 (1) Μm long (Fig. 48I), tibia with single, apical and pectinate spur 22 Μm long with five teeth (Fig. 48J) and two preapical setae; ta1-4 each with two preapical pseudospurs. Hind leg: width at apex of tibia 39 Μm long (Fig. 48K), tibia without spur; comb with 8 bristles; ta1 with two preapical pseudospurs. Claws slender, hooked; pulvilli absent. Lengths and proportion of leg segments as in Table 32.
fe ti ta1 ta2 ta3
p1 375 406 313–328 180–188 133
p2 531–592 429–450 531–532 234–258 148–156 p3 500–508 531–555 531–555 234 148–164
ta4 ta5 LR BV SV
p1 86 63–70 0.77–0.81 2.34–2.37 2.38–2.50 p2 94 86 1.18–1.23 2.51–2.80 1.81–198 p3 109–117 86–94 1.00 2.65–2.70 1.91–194 Hypopygium (Fig. 48M). Tergite IX arched, with 7–10 posterior setae. Membranous anal point trapezoidal. Phallapodeme 56–61 Μm long. Sternapodeme with distinct anterior process. Gonocoxite cylindrical, 143–153 Μm long, 61–65 Μm wide. GcR 2.35–2.36. Gonostylus simple and slender, 104–106 Μm long; megaseta, 16 Μm long. HR 1.35–1.47. HV 2.30 (1).
Adult female, pupa and larva. Unknown.
Remarks. Adult males of Labrundinia parabecki appear most similar to those of L. becki. See remarks under L. becki. Labrundinia parabecki 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 by Roback (1987a) could not with certainty be associated with the adults. Thus, the immatures of L. parabecki 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 101-103, DOI: 10.11646/zootaxa.3769.1.1, http://zenodo.org/record/250728