Labrundinia parabecki 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 : 101-103

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.5621075
persistent identifier	https://treatment.plazi.org/id/676987A8-B766-FFB7-FF29-FCF5FA9BFC49
treatment provided by	Plazi
scientific name	Labrundinia parabecki Roback, 1987
status

Treatment

Labrundinia parabecki Roback, 1987 View in CoL

( Fig. 48 View FIGURES 48 A – M )

Labrundinia parabecki Roback, 1987: 215 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, 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 View FIGURES 48 A – M ).

Head ( Figs 48A–E View FIGURES 48 A – M ). Temporal setae 13, uniserial ( Fig. 48B View FIGURES 48 A – M ). Eye ratio 1.06–1.2. Tentorium ( Fig. 48C View FIGURES 48 A – M ) 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 View FIGURES 48 A – M ), 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 View FIGURES 48 A – M ), 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 View FIGURES 48 A – M ). 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 View FIGURES 48 A – M ). Fore leg: width at apex of tibia 39 Μm ( Fig. 48G View FIGURES 48 A – M ), tibia with single, apical and pectinate spur 13 Μm long ( Fig. 48H View FIGURES 48 A – M ), 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 View FIGURES 48 A – M ), tibia with single, apical and pectinate spur 22 Μm long with five teeth ( Fig. 48J View FIGURES 48 A – M ) and two preapical setae; ta1-4 each with two preapical pseudospurs. Hind leg: width at apex of tibia 39 Μm long ( Fig. 48K View FIGURES 48 A – M ), 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 View FIGURES 48 A – M ). 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.