Lispe, Latreille, 1797

Pont, Adrian C., 2019, Studies on the Australian Muscidae (Diptera). VIII. The genus Lispe Latreille, 1797, Zootaxa 4557 (1), pp. 1-232 : 176-177

Lispe sp. nov.

At a late stage of this work, after the illustrations had all been mounted, numbered and scanned, it was realised that the cercal plate dissected and illustrated for L. absentiseta was strikingly different from the cercal plate in all other species of the cana -group. Furthermore, the conformation of the cercal plate in other, undissected males of L. absentiseta was typical of the species of the cana -group ( Fig. 357a ) and very different from that of the male dissected and illustrated here. This male has all the external morphological characters of L. absentiseta , but the cercal plate is unlike that of any known Australian Lispe . In the absence of further material, this male is left as “ Lispe sp. nov.” and the illustrations of the ♂ terminalia, originally made for L. absentiseta , are given here together with a description of the structures.

Material Examined. AUSTRALIA: Western Australia: 4 km SSW of Cape Bertholet, West Kimberley, at light, 19.iv.1977, D.H. Colless, 1♂ ( ANIC).

Ƌ terminalia. Epandrium separated from tergite 5 by syntergosternite 8, which has 2 spiracles; produced lobelike ventrally, bifurcate at apex, the inner fork connecting with the hypandrium ( Fig. 365 ). Tergite 6 absent. Sternites 2–4 setulose ( Fig. 363 ). Sternite 6 small, subquadrate, withdrawn beneath sternite 5 and connected to it by two elongate plates ( Fig. 364 ). Surstylus absent, i.e. fused to epandrium without trace ( Fig. 365 ). Cercal plate deeply divided dorsally, produced into two lobes ventrally ( Fig. 366 ). Hypandrium attached at two points: to a rod originating from wall of epandrium close to upper outer edge of cercal plate; and via an apparent praegonite to lower anterior corner of epandrium. Phallic complex ( Fig. 367 ): hypandrium branching posteriorly, the upper pair of branches fused behind base of phallus; praegonite and postgonite present, the former only loosely connected to hypandrium, the latter simple and curved; phallapodeme long but normal in structure, at mid-length connected to hypandrium by a bridge; phallus long, tubular, simple, juxta large, with small spinules; basal part without a multitoothed process.

Figures

FIGURE 357. Lispe absentiseta sp. nov., ♂ habitus (holotype).

FIGURES 367. Lispe sp. nov., ♂ phallic complex, lateral view. (WA, 4 km SSW of Cape Bertholet.)

FIGURES 363–366. Lispe sp. nov., ♂. 363. Sternites 1–5. 364. Sternite 5, posterior view showing sternite 6 and the two plates. 365. Hypopygium, lateral view. 366. Cercal plate, dorsal view, with a dark line fusing the two halves. (WA, 4 km SSW of Cape Bertholet.)