Tanzanimyia ugandaensis, Freidberg & Zonstein & Friedman & T. & T., 2020

Freidberg, Amnon, Zonstein, Irina, Friedman, Ariel-Leib-Leonid, T., T. & T., T., 2020, Tanzanimyia, a new Afrotropical genus of Schistopterini with four new species (Diptera: Tephritidae: Tephritinae), Israel Journal of Entomology (Oxford, England) 50 (1), pp. 19-39 : 36-38

Tanzanimyia ugandaensis n. sp.

( Figs 1, 6, 7, 11, 13, 15, 17, 20, 23)

LSID: urn:lsid:zoobank.org:act:216FDC9E-2DFA-4C4C-8109-F6766856558A .

Etymology: This species is named after Uganda, the country where most of the type specimens were collected.

Diagnosis: This species is most similar to T. tanzaniaensis , differing from it in the following: smaller (wing length 2.8–3.1 mm vs. 3.5–4.0 mm in T. tanzaniaensis ) and generally darker, with 1 st flagellomere partly blackened (entirely yellow in T. tanzaniaensis ), posterior frontal seta blackish (brownish in T. tanzaniaensis ), brown bands on legs more conspicuous; wing pattern darker, with darker brown bullae, and with apical part, especially in cells r 2+3 and r 4+5 more rayed in appearance.

Description: Head ( Fig. 1). Structure and coloration: 1.03–1.15× as high as long; fronto-facial angle about 100°; eye 1.04–1.10× as high as long; frons about 1.18– 1.38× as wide as long; face 0.8–0.9× as high as frons length; antenna ( Fig. 5): 1 st flagellomere about as long as face, semilunar, pointed apically; arista 2.2–2.5× as long as 1 st flagellomere, basal 0.2 wider and light yellowish; pedicel 1.25–1.50× as long as high; palpus ( Figs 5, 6) usually yellow, sometimes with brownish spots, especially along ventral edge, about 3.2× as long as wide. Chaetotaxy: Orbital setae black, anterior orbital seta usually dark brown to black, about 1.3× as long as whitish, slightly lanceolate posterior orbital seta; anterior frontal seta whitish, about 0.7–0.8× as long as middle frontal seta, middle frontal seta usually brownish (but color varied, sometimes whitish), posterior frontal seta brownish, about 1.2–1.5× as long as middle frontal seta; ocellar seta whitish, 0.7–0.8× as long as posterior frontal seta, about equal to anterior orbital seta; one fine pale brownish preocellar seta about 0.25–0.33× as long as ocellar seta, slightly proclinate; postocellar seta whitish, slightly shorter or equal in length to ocellar seta; medial vertical seta about 2× as long as posterior frontal seta; lateral vertical seta black 0.2–0.3× as long as medial vertical seta; two white acuminate paravertical seta 0.6–0.7× as long as postocellar seta; genal seta blackish, acuminate, about as long as or slightly shorter than anterior frontal seta; gena and postgena with several whitish setulae about 0.7–0.9× as long as acuminate black genal seta.

Thorax. Structure: Scutum about 1.2× as long as wide; scutellum about 0.32× as long as scutum. Coloration: Generally fits generic description, with two longitudinal, roughly parallel, brownish lines extending from transverse suture and base of anterior dorsocentral seta to scutoscutellar suture, often indistinct; scutellum margin and apex usually yellow. Chaetotaxy: Dorsocentral seta aligned about midway between transverse suture and level of postsutural supra-alar seta, slightly closer to transverse suture; acrostichal setulae in about 8 irregular rows; anepisternal setae 4–6, usually 5, mostly whitish to light brownish mixed with some darker setae, posterodorsalmost longest seta of anepisternum brown to black, acuminate; katepisternum posterodorsally with long whitish seta and a few short whitish setulae scattered along dorsal and anterior margins. Scutellum with short, erect, whitish dorsoapical seta, about 0.5–0.6× as long as apical scutellar seta, and fine, shorter, whitish setula basolaterally; basal scutellar seta 2.0–2.5× as long as apical scutellar seta; both scutellar setae brownish, slightly blackish at base, but apical scutellar seta more yellowish.

Legs. Coloration: Femora usually with large brown ventrobasal and ventrodistal spots, often extending dorsally, latter spot usually forming complete ring, both more conspicuous on midfemur and hindfemur, often lacking on forefemur. Chaetotaxy: Forefemur: setae of posteroventral row yellowish, slightly lanceolate, and longest; setae of posterior row dark brownish; posterodorsal row: mix of dark acuminate and white somewhat lanceolate setae; hind metatarsus ventrally with brush of dense, short, yellowish setulae.

Wing ( Fig. 11). Length 3.0– 3.5 mm. Length/width ratio about 2.33. Venation: Pterostigma about 1.1–1.2× as long as wide; vein R 1 dorsally with 19–24 setulae, with wide gap opposite bend of subcosta, and ventrally with 2–4 setulae along posterior margin of pterostigma; vein R 4+5 sparsely setulose dorsally on basal half, with 4–5 setulae basal to crossvein R–M, and about 10–12 setae ventrally along this vein. Pattern: Rays reaching vein C generally elongate, dark and sharp; rays to wing margin beyond vein R 4+5 considerably wider and generally somewhat blurred; anal lobe with 4 transverse brownish bands. Bullae: Black bulla short oval, less than 1.5× as long as crossvein R–M, basal bordering hyaline spot moderately large, distinctly larger than distal bordering hyaline spot; brown bullae: cell r 4+5 with large elongate brown bulla proximal to crossvein DM–Cu, along vein R 4+5; cell dm with large, oval, conspicuous brown bulla along vein M, ranging from opposite to crossvein R–M and distally; cell m with small inconspicuous more or less round bulla near anteroproximal corner.

Abdomen. Coloration and chaetotaxy: Median vitta on tergites grayish; posterior margin of male tergite 5 and female tergite 6 dark brown, shiny, without microtrichia, with longer lateral and posterior brown setae; posterior margin of sternites 1 and 2 yellowish, sternite 3 partly rufous.

Male terminalia: Height/length ratio of epandrium with surstyli about 1.2 (posterior view, Fig. 13); lateral surstylus not separate from epandrium by distinct fold ( Figs 13, 15), with sparse cluster of 5–8 brownish setae; glans as in Fig. 17. Female terminalia: Tergal-oviscapal measure 2–3. Aculeus 5–6× as long as wide (Fig. 20), in dorsal view tip more or less pointed, with indistinct, rounded preapical shoulders; in lateral view slightly curved, without distinct projections dorsally or ventrally; 2 spermathecae, oval, about 1.8× as long as wide, wrinkled and intensively tuberculate ( Fig. 23).

Holotype: ♂ Uganda : S[outh] W[est] [ UGANDA] Ichuya Forest, Kanaba Gap [1°15'S 29°48'E], 2500 m, 28.xii.1995, I. Yarom & A. Freidberg (SMNHTAU). The holotype is double-mounted, minutien pin in a plastic block, in excellent condition.

Paratypes: 38♂ 39♀ same collection data as holotype (32♂ 33♀ SMNHTAU, 1♂ 1♀ NHM, 1♂ 1♀ MRAC, 1♂ 1♀ MHNG, 1♂ 1♀ NMK, 1♂ 1♀ NMSA, 1♂ 1♀ USNM) ; 2♂ 2♀ same locality as holotype but 25.xii.1995 ; 19♂ 25♀ same locality, 28.xii.1995, ex. flower head of Botriocline fusca , 10–20.i.1996 ; 1♀ Rutenga , 20 km NW Kabale, 2100 m, 25.xii.1995, I. Yarom & A. Freidberg ; 1♂ Impenetrable Forest , SW Uganda, 27.i.1972, A. Freidberg. Kenya : 1♂ 1♀ Kericho Junction , 0°23'S 39°16'E, 1900 m, 8.xi.2011, A. Freidberg. Burundi : 1♀ Kayanza, 2°55'S 29°37'E, 1800 m, 28–29.i.2011, A. Freidberg ; 1♂ Kayanza Province, Kibira National Park, Rwegura , 2°55'S 29°30'E, 2100 m, 28–29.i.2011, A. Freidberg. Note: All paratypes are in SMNHTAU unless indicated otherwise .

Distribution: Uganda (south west), Kenya, Burundi; mountains, at altitude above 1800 m.

Biology: The larvae develop in flower heads of the large shrub, Bothriocline fusca (S. Moore) M.G. Gilbert ( Asteraceae ).