Orfelia ochracea ( Meigen, 1818 ) Kjaerandsen, Jostein, Martinsson, Svante, Hedmark, Kjell & Evenhuis, Neal L., 2009

Kjaerandsen, Jostein, Martinsson, Svante, Hedmark, Kjell & Evenhuis, Neal L., 2009, On the genus Urytalpa Edwards (Diptera: Keroplatidae) in the Nordic and Nearctic regions, with fixation of a new type species and a key to world males, Zootaxa 2160 (1), pp. 29-50 : 32-33

Orfelia ochracea ( Meigen, 1818) , comb. n.

Platyura ochracea Meigen, 1818:240

= Platyura unicolor Staeger, 1840:280 , syn. n.

nec Urytalpa ochracea ( Meigen, 1818) authors based on Edwards (1924, 1929) Type material: Lectotype male by present designation, GERMANY [“im Walde”], undated [NMHN, JKJ- SPM-011815]. Original label: Round, darkened (originally white?) label with handwritten “Meigen”. Secondary determination label of new date: White, rectangular with handwritten “ Orfelia unicolor (Staeg.) ". Paralectotypes: 1 male Orfelia sp. lacking abdomen [NMHN, JKJ-SPM-033583] with original label: Round, darkened (originally white?) with handwritten “Meigen”. 1 female Neoplatyura cf. flava (Macquart, 1826) [NMHN, JKJ-SPM-033584] with original labels: Round, blank white with handwritten “Meigen”. Second square off-white label with handwritten “ ochracea ”.

Classification. Urytalpa is included in a genus group called the Cloeophoromyia-Asindulum group, a group that includes 10 genera ( Uesugi 2004) and is mainly characterized by the enlarged aedeagal apparatus with long, sclerotized anterior apodemes ( Matile 1978). The placement of Urytalpa in relation to other genera of this genus group is vague and not settled. In the original key, Edwards (1929) used the combination of bare mediotergite, less setose to bare anepisternum and "totally different hypopygium" to separate Urytalpa from Pyrtaula . Matile (1978) gave one synapomophy for Urytalpa that seems to hold for the species we have examined: Mesonotal setae clearly separated into acrostichals, dorsocentrals and laterals [but see note on U. yoshidai Uesugi, 2004 by Uesugi (2004)]. We find that the species currently placed in Urytalpa display a rather large interspecific variation both in general appearance ( Figs 2–3 ) and in structures of their male terminalia ( Figs 5–10 ). The detection of new species with high resemblance in structures of the terminalia between Urytalpa , Asindulum and Macrorrhyncha has made authors express concerns about the generic limits between them ( Chandler 1994, Chandler & Blasco-Zumeta 2001, Uesugi 2004). Asindulum and Macrorrhyncha are usually separated in keys by their elongated mouthparts but some species with intermediate mouthparts, such as Asindulum theodori Matile, 1974 , Macrorrhyncha gallica Chandler & Matile, 2001 and Urytalpa yoshidai , further complicate the picture. It is beyond the scope of this paper to solve these issues but we stress that the current generic limits of Urytalpa appear vague to us and that the entire genus group is in need of a revision.

Figures

FIGURE 2. Habitus photos of males of Nordic species of the genus Urytalpa Edwards. — A. Urytalpa dorsalis (Staeger, 1840). — B. Urytalpa trivittata (Lundström, 1914). — C. Urytalpa atriceps (Edwards, 1913). — D. Urytalpa macrocera (Edwards, 1913). — E. Urytalpa galdes Hedmark & Kjaerandsen sp. n.

FIGURE 3. Habitus photos of females of Nordic species of the genus Urytalpa Edwards. — A. Urytalpa dorsalis (Staeger, 1840). — B. Urytalpa macrocera (Edwards, 1913).

FIGURE 5. Male terminalia of Urytalpa atriceps (Edwards, 1913). — A. Sternite IX, hypandrial lobe and internal aedeagal apparatus in ventral view (pre-terminal segments not illustrated). — B. Tergite IX, proctiger and cerci in dorsal view. — C. Segment IX and beyond in lateral view. — D. Gonostylus in lateral view, enlarged.

FIGURE 6. Male terminalia of Urytalpa dorsalis (Staeger, 1840). — A. Sternite IX and hypandrial lobe in ventral view. — B. Tergite IX, proctiger and cerci in dorsal view. — C. Segment IX and beyond in lateral view, including internal aedeagal apparatus (pre-terminal segments not illustrated). — D. Gonostylus in lateral view, enlarged.

FIGURE 7. Male terminalia of Urytalpa galdes Hedmark & Kjaerandsen sp. n. — A. Segment IX, hypandrial lobe and internal aedeagal apparatus in ventral view (pre-terminal segments not illustrated). — B. Tergite IX, proctiger and cerci in dorsal view. — C. Segment IX and beyond in lateral view. — D. Gonostylus in lateral view, enlarged. — E. Aedeagal apparatus in lateral view.

FIGURE 8. Male terminalia of Urytalpa macrocera (Edwards, 1913). — A. Segment IX, hypandrial lobe and internal aedeagal apparatus in ventral view (pre-terminal segments not illustrated). — B. Tergite IX, proctiger and cerci in dorsal view. — C. Segment IX and beyond in lateral view. — D. Gonostylus in lateral view, enlarged.

FIGURE 9. Male terminalia of Urytalpa nigrita (Johannsen, 1910) comb. n. — A. Segment IX, hypandrial lobe and internal aedeagal apparatus in ventral view (pre-terminal segments not illustrated). — B. Tergite IX, proctiger and cerci in dorsal view. — C. Segment IX and beyond in lateral view. — D. Gonostylus in lateral view, enlarged.

FIGURE 10. Male terminalia of Urytalpa trivittata (Lundström, 1914). — A. Sternite IX, hypandrial lobe and internal aedeagal apparatus, ventral view (pre-terminal segments not illustrated). — B. Tergite IX, proctiger and cerci in dorsal view. — C. Segment IX and beyond in lateral view. — D. Gonostylus in lateral view, enlarged.