Lispe cilitibia, Pont, 2019

Pont, Adrian C., 2019, Studies on the Australian Muscidae (Diptera). VIII. The genus Lispe Latreille, 1797, Zootaxa 4557 (1), pp. 1-232 : 168-173

Lispe cilitibia sp. nov.

( Figs 345–356 )

Diagnosis. In the group of species with setulae present on meron below spiracle, L. cilitibia can be recognised by the absence of an ad seta on hind tibia and of a p seta on fore tibia; in addition, the ♂ has fine pd to p setae in the apical part of mid tibia that continue on to the basal tarsomere ( Fig. 348 ).

Etymology. The species name contains the Latin “cilium” (= “hair”) combined with “tibia”, and refers to the fine pd to p setae on mid tibia and basal tarsomere ( Fig. 348 ).

Type Material Examined. Holotype ♂. AUSTRALIA: Victoria: Marlo , 8.i.1962, Z. Liepa ( ANIC) . Paratypes 22♂ 16♀. AUSTRALIA: Queensland: Noosa Heads , beach and fore-shore vegetation, 29.xi.1985, D. Bickel & G. Cassis , 1♂ 2♀ ( AMS). New South Wales: Broken Head, near Byron Bay , 24.xii.1975, G. Daniels , 2♂ 2♀ ( AMS); Careel Bay, Avalon , mangroves, 3.ii.1973, D.K. McAlpine , 7♂ 1♀ ( AMS) & 1♂ ( BMNH); same locality, 15.xii.1964, D.K. McAlpine , 2♂ 1♀ ( AMS); N. Cronulla , swamp margin and sand dunes, 3.ii.1964, D.K. McAlpine , 4♂ 6♀ ( AMS) & 1♀ ( BMNH); Little Bay near South West Rocks , 20.xi.1971, m. v. lamp, G. Daniels , 1♂ ( QMBA). Victoria: Marlo , 8.i.1962, Z. Liepa , 2♂ 2♀ ( ANIC) & 1♂ ( BMNH). South Australia: Arno Bay , mangrove, 33.92S 136.57E, 8–9.ii.2013, N. Vikhrev , 1♂ 1♀ ( ZMUM) .

Additional material (N.E. Vikhrev, pers. comm.): AUSTRALIA: South Australia, Arno Bay , mangrove, 33.92S 136.57E, 8–9.ii.2013, N. Vikhrev, 2♂ 2♀ ( ZMUM) .

Description ♂ ♀. Head ( Fig. 346 ). Ground-colour black. Frons at broadest point 0.41, at lunula 0.34 (♂) or 0.40 (♀), of maximum head-width (frontal view). Fronto-orbital plate, frontal triangle, parafacial, face, gena and lower half of occiput silvery-white pruinose in ♂, tinged with yellow in ♀ except on gena and occiput; frontal triangle very broad, frontal vitta almost totally suppressed so that entire frons appears silvery (♂) or yellowish (♀). Ocellar setae fine. Upper orbital seta short, lower one weak and hardly distinct from the ground-setulae, more distinct in ♀. Parafacial broad, 2/3 (♂) to almost (♀) as broad as postpedicel; wholly bare. Antenna black, pedicel orange at tip; postpedicel short, 2.0 times as long as broad, falling short of mouth-margin by 0.8–0.9 its length. Arista short-plumose, the hairing at widest point 0.6 (♂) or 0.75 (♀) times width of postpedicel. Vibrissa short, shorter in ♂ than in ♀ and not crossed in either sex. Gena broad, 0.27–0.28 of vertical eye-length; genal setae rather dense behind, sparse to absent just before vibrissal area. Palpus yellow, abruptly swollen in apical part (as in L. cana , Fig. 335 ).

Thorax. Ground-colour black. Scutum and scutellum densely dusted; in anterior view light grey, almost whitish, in posterior view grey to light grey and with no pattern of darker or undusted vittae, tinged here and there with yellowish in ♀ especially before suture and at sides; pleura also light grey. Anterior spiracle yellowish. Acr setulae in 5–6 irregular rows at suture. Dc 2+4, anterior 2 post pairs weaker than the others. 2 pprn, inner seta sometimes weak. 1+1 ia, posterior post seta fine and short. 1+1 sa, both strong. 1 strong and 1 weaker proepisternal setae. 1 strong proepimeral, shorter than the strong proepisternal, with 2–4 adjacent setulae. Anepisternum with only a setula in upper anterior corner; posterior row with 3 strong and 3 weak setae. 3 strong kepst, lower one closer to posterior than to anterior. Meron with a group of 2-3 conspicuous setulae below spiracle, bare above hind coxa. Scutellum with disc densely setulose, with a few setulae in 1 row descending on to sides, otherwise sides and ventral surface bare.

Legs. Black, knees broadly yellow. Fore coxa bare behind. Fore femur without av; pv row complete, the setae fine, short and sparse, shorter than femoral depth; pd row complete. Fore tibia without a submedian seta; with d apical seta strong, p and pv apicals absent in ♂, tiny in ♀. Fore tarsomeres 2-4 of ♂ rather short ( Fig. 347 ), not as long as tarsomere 1, otherwise fore tarsomeres without modifications. Mid femur without av setae; pv surface with a row of fine setae in basal half, shorter than femoral depth, merging into the ground-setulae in apical half; a surface without differentiated setae; 2 p preapicals. Mid tibia with 1 submedian p seta, not well differentiated in ♂; apical half in ♂ with a series of fine p and pd setae ( Fig. 348 ), continuing along basal tarsomere; with strong d, av, v, and pv apicals. Mid tarsomeres 2–5 without modifications. Hind coxa bare on posterior apical margin. Hind femur with 1–2 short av setae around middle, otherwise without setae on ventral surfaces; ad row complete; d preapical hardly differentiated in ♂. Hind tibia without ad seta; in ♂ ground-setulae on ad and a surfaces long, fine and erect; without av or pd setae; d preapical long and strong, placed well before apex, ad absent in ♂ but present in ♀; av apical setae short but strong; in ♂ with a few fine hair-like setae at apex of v and pv surfaces, ♀ without these setulae and with a pv apical seta. Hind tarsus of ♂ ( Fig. 349 ) with basal tarsomere short, flattened, greatly expanded on posterior side, and with a dense brush of black setulae along p and all over v surfaces; without modifications in ♀.

Wing. Clear. Tegula mostly black, basicosta yellow. Crossvein r-m placed below the point where vein R1 enters costa; dm-cu sinuous, longer than apical section of vein CuA1. Vein M running straight to wing-margin. Calypters white, margins creamy. Knob of haltere yellow.

Abdomen. Ground-colour black. Wholly dusted; in posterior view, the dust light grey or almost whitish, slightly and partially tinged with yellow in ♀, without any dark markings. ♂ epandrium grey dusted. ♀ ovipositor with exposed tergites dusted grey. Sternites 1–5 grey dusted. Setae only present on tergite 5, with 3 pairs of marginals, these weak in ♀. ♂ sternites 2–4 setulose (Fig, 350); sternite 5 as in L. cana ( Fig. 336 ).

Ƌ terminalia. Not completely hardened in the dissected ♂, and so not possible to illustrate fully. Epandrium separated from tergite 5 by syntergosternite 8, which has 2 spiracles; with a long process at antero-ventral corner, ventrad of the lobe that connects with the hypandrium, sickle-shaped and directed ventrad. Tergite 6 absent. Sternite 6 small, subquadrate, withdrawn beneath sternite 5 and connected to it by two triangular plates. Surstylus absent, i.e. fused to epandrium without trace ( Fig. 351 ). Cercal plate narrowly divided ventrally ( Fig. 352 ). 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. 353 ): hypandrium continued posteriorly and each side meeting at posterior end behind base of phallus; praegonite and postgonite present, the latter long and curved; phallapodeme long but normal in structure, at mid-length connected to hypandrium by a bridge; phallus long, tubular, simple, juxta large, without spinules; basal part flanked anteriorly by a pair of large plates, posteriorly consisting of a multi-toothed process.

♀ ovipositor ( Figs 354–356 ). Tergites 6 and 7 complete; tergite 8 divided dorsally, each half displaced laterally, bare. Sternite 6 reduced to 2 small weakly-sclerotised plates; sternite 7 present as a small plate; sternite 8 represented by 2 plates that are entirely concealed by the invaginated membrane after segment 8. Epiproct large, with 1 seta, divided medially, each half connected to cercus. Hypoproct large, extended posteriorly, with several stout spines at apex. Cercus broad, plate-like, with a few weak spines near tip. 3 spermathecae.

Measurements. Wing-length, 4.0– 4.5 mm (♂), 5.0 mm (♀). Body-length, 5.5–6.0 mm (♂), 6.5 mm (♀).

Biology. Adults have been collected on beaches, on swamp margins, among dunes, and among mangroves.

Distribution. Known only from Australia (Q, NSW, V, SA).

Figures

FIGURE 345. Lispe cilitibia sp. nov., ♂ habitus (holotype).

FIGURES 346–350. Lispe cilitibia sp. nov., ♂. 346. Head, lateral view. 347. Fore tarsomeres, dorsal view. 348. Mid tibia and tarsomere 1, posterior view. 349. Hind tarsomere 1, dorsal view. 350. Sternites 2–4. (Paratype from V, Marlo.)

FIGURES 351–353. Lispe cilitibia sp. nov., ♂. 351. Hypopygium, lateral view. 352. Cercal plate, dorsal view. 353. Phallic complex, lateral view. (Paratype from V, Marlo.)

FIGURES 354–356. Lispe cilitibia sp. nov., ♀ ovipositor. 354. Dorsal view. 355. Ventral view. 356. Lateral view. (Paratype from V, Marlo.)

FIGURES 334–338. Lispe cana (Walker). 334. ♂ head, lateral view. 335. ♀ palpus. 336. ♂ sternites 1–5. 337. Meron, with posterior spiracle and part of anepimeron and katepisternum. 338. ♂ hind tarsomere 1, with tarsomere 2 and tip of tibia. eanepimeron, d—dorsal, k—katepisternum, m—meron. (334, NSW, Palm Beach; 335, 337, SA, Victor Harbour; 336, SA, Ceduna; 338, NSW, Collaroy.)