Valid Names Results

Neotachardiella charruarum Kondo, Peronti & Pacheco da Silva, 2025 (Tachardiidae (= Kerriidae): Neotachardiella)

Nomenclatural History

• Neotachardiella charruarum Kondo, Peronti & Pacheco da Silva 2025: 276. Type data: URUGUAY: Montevideo, Malvin, on twig of Myrrhinium atropurpureum var. octandrum, 34°53’41”S, 56°06’16”W, 9/14/2018, coll. V.C. Pacheco da Silva (FCE-HE). Holotype, female, by original designation Type depository: Montevideo: Colección de Hexapoda de la Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay.; Mosquera: Colección Taxonómica Nacional de Insectos “Luis María Murillo”, Corporación Colombiana de Investigación Corpoica, Mosquera, Cundinamarca, Colombia; accepted valid name Notes: Paratypes: Same data as holotype, 2 slides, 5 adult females (CTNI) Illustr.

Common Names

• insecto laca de los Charrúas KondoPaMa2025
• cochonilha laca dos Charruas KondoPaMa2025
• charrua lac insect KondoPaMa2025

Ecological Associates

Hosts:

Families: 1 | Genera: 7

Foes:

Families: 1 | Genera: 1

Associates:

Families: 1 | Genera: 1

Geographic Distribution

Keys

• KondoPaMa2025: pp.284 ( Adult (F) ) [Species of Neotachardiella]

Remarks

• Structure: Unmounted adult female: Resinous test purplish red to dark purplish brown, sometimes with tinges of orange, often appearing brown or black due to sooty mold; tests of adjacent females becoming fused when crowded on infested twigs and branches of host. Often with white waxy filaments projecting from dorsum of test. Slide-mounted adult female: Adult female subcircular, oval or elongate oval to broadly pyriform, often with a constriction at level of anterior stigmatic areas. Body 0.8–3.0 mm long, 0.7–2.7 mm wide. Dorsum. Derm membranous. Dorsal setae and macroducts absent. Microducts scarce, scattered; diameter of duct rim 2.0 µm. Venter. Derm membranous; mid-areas of venter posterior to mouthparts with microtrichia. Antennae small, each 67–98 µm long, 30–50 μm wide at base, with segmentation poorly defined, about 3 or 4 segmented; each segment membranous; fleshy setae totaling about 3, each 10–23 µm long, present only on last segment when 3 segmented or on last 2 segments when 4 segmented (1 on penultimate segment, and others all on terminal segment); slender setae totaling about 3 or 4, present only on last segment, each 3–6 µm long. (Kondo et al. 2025)
• Biology: In Uruguay, the largest hatching of first-instar nymphs (crawlers) of N. charruarum was observed at the beginning of summer, typically within a 10-day period from December 15th to 21st, 2023; the highest number of crawlers observed on the 21st. Dead adult females from the previous year remain on branches, while the crawlers move towards the tender shoots or new growth of the current year. A second, much smaller emergence of crawlers occurs towards the end of March. The species overwinters as first-instar nymphs. The female appears to reproduce by parthenogenesis; males have never been observed. (Kondo et al. 2025)
• General Remarks: Description, illustration, and photograph of adult and nymph by Kondo et al. (2025).

Illustrations

Citations