Paraleucopis bispinosa Wheeler & Sinclair, 2019

Wheeler, Terry A. & Sinclair, Bradley J., 2019, Systematics of Paraleucopis Malloch with proposal of Paraleucopidae, a new family of acalyptrate Diptera, Zootaxa 4668 (3), pp. 301-328 : 308-309

Paraleucopis bispinosa Wheeler & Sinclair , sp. nov.

( Figs 15 , 20–22 , 24 , 27 , 29 )

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Type material. HOLOTYPE Ƌ, labelled: “ Socos / Coquimbo, CHILE / 1.XI.1957 / L.E. Peña ”; “ HOLOTYPE / Paraleucopis / bispinosa/ Wheeler & Sinclair [red label]” ( CNC) . PARATYPES: Chile: Coquimbo, Rivadavia , 29.x.1957, L.E. Peña (2 ♀, CNC) ; Linares, Linares , xii.1952, L.E. Peña (1 Ƌ, CNC) ; Atacama, 20 km S Vallenar , 13.x.1969, Rozen & Peña (1 Ƌ, AMNH) ; 5 mi. N Illapel , 30.xi.1950, Ross & Michelbacher (1 Ƌ, 1 ♀, CAS) ; 50 km S La Serena , 1.xii.1950, Ross & Michelbacher (4 Ƌ, 1 ♀, CAS) .

Recognition. This species is characterized by fronto-orbital setae distinct; antenna yellow; face mostly clothed in pruinescence, not extended beneath eye anteriorly; parafacial pruinose; legs dark; hind femur with 2 anteroventral preapical setae; surstylus triangular, arched posteriorly, strongly tapered to narrow apex.

Description. Frons dark brown without pale band above antennae; gena dark. Face mostly clothed in pruinescence, not extended beneath eye anteriorly; parafacial pruinose. Fronto-orbital setae distinct ( Fig. 15 ). Antenna yellow; antennal bases separated by length of postpedicel. Clypeus shiny.

Katepisternum with several stout, dark ventral setae, anterior to mid coxa; short setulae on anterior half. Scutum appearing smooth and shiny ( Fig. 27 ); setulae not arising from tubercles. Legs with dark femora and mid and hind tibiae; fore tibia pale brown; tarsomeres 1 and 2 pale, increasingly darker apically. Mid tibia with dark ventroapical seta, one-quarter length of tarsomere 1. Hind femur usually with 2 spine-like preapical anteroventral setae ( Fig. 24 ).

Male postabdomen ( Figs 21, 22 ): epandrium rounded, evenly sclerotized, setose on posterior half; not extended ventrally. Hypandrium broad, with 1 anterior seta; with rounded postgonite apically. Surstylus long, arched posteriorly, strongly tapered to narrow apex; apex arched posteromedially; setae confined mostly to posterior margin. Distiphallus tapered to narrow apex. Cercus short, narrow, slightly longer than dorsal length of epandrium; apex rounded.

Female postabdomen: tergite 6 ( Fig. 20 ) broadly bilobed anteriorly, slightly narrowed medially with nearly straight posterior margin; posterior corners slightly expanded with pair of long setae, more than half length of tergite; spermatheca not examined.

Distribution. This species is known from several localities in Chile ( Fig. 29 ) in the Coquimban and Santiagan provinces of the Central Chilean sub-region (Morrone 2015).

Etymology. The species name refers to the two anteroventral spine-like setae on the hind femur.

Figures

FIGURE 29. Distribution of Paraleucopis in South America: P. auripes sp. nov. (●), P. bispinosa sp. nov. (■), P. boharti sp. nov. (▲).

FIGURES 15–18. Heads of Paraleucopis spp. 15, P. bispinosa sp. nov., lateral view; 16, P. saguaro sp. nov., lateral view; 17, P. paraboydensis sp. nov., anterior view; 18, P. saguaro sp. nov., anterior view. Scale bars = 0.25 mm.

FIGURES 19–22. Male terminalia and female tergite 6 of Paraleucopis spp. 19, P. auripes sp. nov., male terminalia, lateral view; 20, P. bispinosa sp. nov., female tergite 6, dorsal view; 21, P. bispinosa sp. nov., male terminalia, anterior view; 22, P. bispinosa sp. nov., hypandrium and phallus, ventral view. Abbreviations: cerc—cercus; distph—distiphallus; epand—epandrium; hypd—hypandrium; pgt—postgonite; phapod—phalapodeme; sur—surstylus. Scale bars = 0.1 mm.

FIGURES 23–26. Hindlegs and habitus of Paraleucopis spp. 23, P. auripes sp. nov., hindleg, anterior view; 24, P. bispinosa sp. nov., hindleg, anterior view; 25, P. boharti sp. nov., hindleg, anterior view; 26, P. mexicana, habitus. Scale bars = 0.25 mm, except Fig. 26 where scale bar = 0.75 mm.

FIGURES 27, 28. Scutum of Paraleucopis spp., dorsal view. 27, P. bispinosa sp. nov.; 28, P. boharti sp. nov. Scale bars = 0.5 mm.