Adelius adeleae Shimbori & Bortoni & Shaw & Souza-Gessner & Cerântola & Penteado-Dias 2019, sp. n.

Adelius adeleae Shimbori & Shaw sp. n.

(Figs 1–4)

urn:lsid:zoobank.org:act: 0D00A2D1-3C64-40CF-AA56-FF0A2C47F60B

Type material. Holotype, ♀ (UWIM), Top label: “ Costa Rica: Guanacaste / Santa Rosa Natl. Park / 300m. ex. Malaise trap / site# H.2.0 / Dates: 21.II–14.III.1987 / I.D. Gauld & D. Janzen ”; bottom label: “[H] open regenerating / woodland <10 years old / [C] more or less fully / shaded as possible”. Paratype: 1♀ (UWIM), same as holotype, 5–26.VII.1986, Ian Gauld col., clearing.

Description of holotype, ♀. Body length: 1.1 mm; Fore wing length: 0.9 mm

Color. Mostly honey yellow. Head light brown dorsally, face yellow, scape brown, pedicel and flagellum dark brown, inner borders of ocelli blackish; maxillary and labial palpi whitish yellow. Mesosoma yellow laterally, dorsally light brown, propodeum light yellow. Legs light yellow; all tibia whitish yellow basally; fore and mid legs with tibia and tarsomere 5 pale brown, tarsomeres 1–4 whitish yellow; hind leg brown apically from apical 1/4 of femur. Metasoma with T1+2 light yellow, remainder terga brown. Wings hyaline with large weakly fuscous patch medially, veins and stigma pale brown. Ovipositor sheaths brown

Head. Length of head in dorsal view 0.57× its width. Antenna 0.97× long as body; scape 2.3 longer than wide; subapical flagellomeres expanded ventrally, distinctly wider than long. Eye height 2.3× longer than malar space. Sculpturing mostly shining punctate, surface weakly irregular (not smooth and polished). Malar suture present.

Mesosoma. Mesoscutum and scutellum shining punctate, remaining mesosoma smooth and polished. Notauli absent. Pronotum entirely smooth. Sternaulus present only anteriorly and smooth. Scutellar sulcus with 6 divisions. Metanotum smooth, not costate. Mesoscutellar trough costate. Propodeum smooth and polished, with prominent transverse carina, anterior aspect with one pair of lateral carinae and a very shallow furrow bordered by inconspicuous carina, posterior aspect with short pair of carinae diverging from posterior knob.

Wings. Fore wing vein r present, 0.17× stigma height; vein R1 0.25× stigma length.

Legs. Hind tibial spurs 0.18× the hind tibia length. All legs smooth. Mid coxa with transverse sulcus dorsally. Hind tibia enlarged apically, slightly narrower than hind femur, 5.5× longer than maximum width.

Metasoma. All terga smooth, except for basal portion weakly rugose with two carinae; basal area of petiole sharply angled with dorsal terga and bordered by carina.

Variation. The paratype is virtually identical to the holotype; body length 1.05 mm.

Male. Unknown

Diagnosis. Adelius adelae sp. n. is remarkably small in body size and most similar to A. gauldi sp. n. in color pattern, except for the flagellum being entirely brown, as compared with the flagellum brown with 2–3 basal segments whitish yellow in A. gauldi. The hind tarsi are entirely brown, as compared with tarsomeres 2–4 being white in A. gauldi. Adelius adeleae also has the metasomal terga 1–3 yellow, as compared with terga 2–3 whitish yellow, distinctly lighter than remaining terga. It also differs from A. gauldi in having two longitudinal carinae on anterior part of propodeum and no areola posteriorly, as compared with four carinae anteriorly and a triangular areola posteriorly in A. gauldi.

Biology. Unknown.

Distribution. This species is known from type locality in Guanacaste Province, Costa Rica.

Etymology. This species is named in honor of the English pop singer-songwriter Adele.