Labrundinia fera 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 : 31-33

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.5621037
persistent identifier	https://treatment.plazi.org/id/676987A8-B71C-FFF1-FF29-FA93FC19F9B5
treatment provided by	Plazi
scientific name	Labrundinia fera Roback, 1987
status

Treatment

Labrundinia fera Roback, 1987 View in CoL

( Fig. 12 View FIGURES 12 A – M )

Labrundinia fera 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, 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 View FIGURES 12 A – M ).

Head ( Figs 12A–E View FIGURES 12 A – M ). Temporal setae 15, uniserial ( Fig. 12B View FIGURES 12 A – M ). Eye ratio 0.75. Tentorium ( Fig. 12C View FIGURES 12 A – M ) 129 Μm long. Clypeus 153 Μm long, 102 Μm wide at largest part, bearing 22 setae. Cibarial pump not measurable ( Fig. 12D View FIGURES 12 A – M ), 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 View FIGURES 12 A – M ), 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 View FIGURES 12 A – M ). 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 View FIGURES 12 A – M ). Fore leg: width at apex of tibia 47 Μm ( Fig. 12G View FIGURES 12 A – M ), tibia with single, apical and pectinate spur 14 Μm long ( Fig. 12H View FIGURES 12 A – M ), 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 View FIGURES 12 A – M ), tibia with single, apical and pectinate spur 26 Μm long with three lateral teeth ( Fig. 12J View FIGURES 12 A – M ) and two preapical setae; ta1-4 each with one preapical pseudospurs. Hind leg: width at apex of tibia 47 Μm long ( Fig. 12K View FIGURES 12 A – M ), 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 View FIGURES 12 A – M ). 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.