Babakintaromyia, Saigusa, 2024

Saigusa, Toyohei, 2024, A remarkable new genus of Sciomyzoidea from Japan, with discussion of its taxonomic position (Diptera, Acalyptratae), Zootaxa 5519 (4), pp. 549-560 : 550

Babakintaromyia gen. nov.

( Figs 1–5 )

Type species: Babakintaromyia albitarsis sp. nov.

Recognition. Large (11–15 mm in body length), more or less elongated, blackish acalyptrate fly, head subtriangular in profile, fronto-orbital setae and vibrissae absent, 2–3 pairs of postocellar setae, postpedicel elongated; rather clear wings distally pointed, without costal breaks, Sc complete, R 4+5 and M 1+2 distally convergent, and posterodistal corner of elongated cell cua (anal cell) acutely produced; legs slender, extensively black, with white basal tarsomeres, and all tibiae lacking a distinct preapical dorsal seta.

Etymology. The generic name is dedicated to the late Dr. Kintaro Baba, who collected this species and submitted specimens to me for identification. Gender feminine.

Figures

FIGURE 1. Babakintaromyia albitarsis gen. et sp. nov., adults and mouthparts. A, male; B, female; C, mouthparts (macerated), anterior aspect; D, ditto, lateral aspect; E, ditto, anterodorsal aspect (clp, clypeus; hpp, hypopharynx; lb, labrum).

FIGURE 2. Babakintaromyia albitarsis gen. et sp. nov., body parts of male. A, head, dorsal aspect; B, ditto, anterior aspect; C, ditto, lateral aspect; D, thorax, lateral aspect; E, legs (macerated); F, vertical area of head, anterior aspect; G, antenna (macerated); H, wing; I, prosternum; J, posterior half of abdomen (macerated), lateral aspect (iv, inner vertical bristle; cx1, fore coxa; rp1, right foreleg; lp2, left midleg; rp3, right hindleg; prst, prosternum; pv, postvertical seta).

FIGURE 3. Babakintaromyia albitarsis gen. et sp. nov., pregenital segments of male. A, left lateral aspect; B, right lateral aspect; C, dorsal aspect; D, ventral aspect; E, anterior area, left lateral aspect; F, ventral area of left side on intersegmental area, ventral aspect (lsp6, left spiracle of segment 6; lsp7, left spiracle of segment 7; rsp6, right spiracle of segment 6; rsp7, right spiracle of segment 7; st5, sternum 5; st6, sternum 6; st7, sternum 7; st8, sternum 8; tg5 tergum 5; tg6, tergum 6; tg7, tergum 7; tg8, tergum 8).

FIGURE 4. Babakintaromyia albitarsis gen. et sp. nov., male hypopygium (macerated). A, hypopygium, lateral aspect; B, cut right epandrium with surstyli, inner aspect; C, hypopygium, posterior aspect; D, epandrium with surstyli, posterior aspect; E, ventral part of hypopygium, lateral aspect; F, ditto, inner aspect; G, phallus, lateral aspect (ass, anterior surstylus; bph, basiphallus; cer, cercus; dph, distiphallus; ejap, ejaculatory apodeme; ejd, ejaculatory duct; ep, epandrium; ses, subepandrial sclerite; hp, hypandrium; pep, anterolateral process of epandrium; phap, phallic apodeme; prg, pregonite; pss, posterior surstylus; psg, postgonite).

FIGURE 5. Babakintaromyia albitarsis gen. et sp. nov., female terminalia. A, posterior part of abdomen, ventral aspect; B, ditto, lateral aspect; C, ditto, enlarged; D, apical part of abdomen, ventral aspect; E, spermathecae and spermathecal ducts (white arrows); F, spherical spermathecae; G, oval spermathecae (cer, cercus; st7, sternum 7; st8, sternum 8; hyp, hypoproct; tg8, tergum 8; epp, epiproct).