Schildia adina Dikow & Bayless, 2009
Head: Face silver pruinose, wide, wider than an adjacent ommatidium; mystax light yellow, 4 setae, 2 short median and 2 long lateral setae; vertex wide, wider than face at clypeal–facial margin, silver pruinose; occipital triangle apruinose, distance between triangle and median eye margin more than adjacent ommatidium; occiput brown pruinose, median dorsoventral stripe silver pruinose; postocular setae brown; proboscis light brown.
Antennae: scape and pedicel light yellow, light brown setae dorsally and ventrally; postpedicel proximally light yellow, brown distally, silver pruinose, about 1.5 times as long as combined length of scape and pedicel; stylus brown, about 1/4–1/3 as long as postpedicel, composed of 2 elements, short cylindrical element which bears the apical ‘seta-like’ sensory element.
Thorax: Yellow and brown, silver pruinose; antepronotum, postpronotum and median postpronotal lobes silver pruinose; lateral postpronotal lobes apruinose, light yellow; scutum brown, 2 yellow longitudinal stripes lateral to midline, neither reaching anterior nor posterior margin, predominantly apruinose, lateral and posterior margins silver pruinose; presutural dc setae: 6 short, postsutural dc setae: 1 long, 2 shorter posteriorly oriented, 5–6 short anteriorly oriented, 3–4 short acr setae, 1 npl and 1 spa seta; anepisternum dorsally yellow, ventrally brown, silver pruinose, few yellow anepisternal setae on anterior and dorsal margins; anepimeron brown, silver pruinose, proepimeron silver pruinose, katepisternum dorsally yellow, ventrally brown, mostly silver pruinose but with central apruinose spot, meron+metanepisternum anteriorly brown, posteriorly yellow, medially apruinose, metkatepisternum brown, silver pruinose; scutellum brown, brown pruinose, 5–7 apical scutellar setae; Legs: light yellow to brown; pro and met coxae light yellow, mes coxa brown; trochanters light yellow, met trochanter light brown ventrally; pro and mes femora light yellow proximally and distally, brown otherwise with 1 median transverse yellow band, met femur proximally light yellow, distal half clubbed and brown, proximal and distal part of club yellow, scattered brown setae on pro and mes femora, met femur with distinct rows of brown macrosetae; pro and mes tibiae light brown with median light yellow transverse band, met tibia brown with median yellow transverse band, 2 times wider than width of tibia, all tibiae with brown erect macrosetae in rows, pro and mes tibiae with 2 long apical macrosetae, met tibia with 2 median sub-apical macrosetae; tarsus light yellow to light brown, proximal tarsomere always longer than two following tarsomeres combined, short and long macrosetae on all tarsomeres; all empodia minute; median claw more than half as long as lateral claw.
Wings: length = 3.8–4.8 mm; microtrichia densely arranged in distal cells, trichoid spicules very short, dense, not symmetrical
dorsally and ventrally, 40–50 on M1 between r-m and diversion of M1 and M2; cell d large, terminating in M1, M2 and M3, r-m situated at separation of M3 and CuA1; R1 reaching C well proximal to R5 and M1 joining C, R2+3 more or less straight throughout, but posterior-most point at separation of R4 and R5; halter light yellow, knob dark brown, length = 0.72–0.88 mm.
Abdomen: Brown, T3-6 yellow posteriorly; T2 length = 1.7–1.8 mm, T2–8 with irregularly spaced macrosetae, T7–8 without lateral sensory areas.
Male terminalia: epandrial halves separated medially and only joining proximally, distal tip straight, pointed; gonocoxite and hypandrium fused to form a gonocoxite-hypandrial complex, which is partly fused to epandrium proximally, but distinct suture discernible; Aedeagus: protruding slightly from hypopygium, prong tubular; Female genitalia: spermathecae occupying segments 7–8, individual spermathecal ducts more or less straight; spermathecal reservoirs clearly sclerotized and wider than ducts, loosely intertwined and not forming a coil.
The species is distinguished from its congeners by the long posteriorly oriented postsutural dorsocentral setae, the very short, dense trichoid spicules, which are not symmetrical dorsally and ventrally, the presence of long apical scutellar setae, and the distribution restricted to Madagascar. This species is the most common member of Leptogastrinae found in Malagasy subfossil copal.
Type Locality: Madagascar, Fianarantsoa Province, near Isalo National Park, 22°37.60’S, 45°21.49’E.
Afrotropical Region: Madagascar, Fianarantsoa and Toliara Provinces
This species is found in the Madagascar and Indian Ocean Islands Biodiversity Hotspot sensu Conservation International.
See this map for an up-to-date distribution map based on specimen records from numerous museum collections.