Paraleucopis saguaro Wheeler & Sinclair,

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: 322-325

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Paraleucopis saguaro Wheeler & Sinclair

sp. nov.

Paraleucopis saguaro Wheeler & Sinclair  , sp. nov.

( Figs 1, 2View FIGURES 1–2, 8, 9View FIGURES 8–10, 16, 18View FIGURES 15–18, 51–53View FIGURES 51–53, 55View FIGURES 54–55, 56View FIGURE 56)

Type material. HOLOTYPE Ƌ, labelled: “ USA:AZ: Maricopa Co. Usery / Mtn Park. 33.475°, -111.618°/ Aspirated  from bare skin/ 09.v.2013, T.A. Wheeler”; “Barcode of Life/ DNA voucher specimen/ SmpleID CCDB-23514-F09/ BOLD Proc. ID: LYMAB 4059-15 [yellow label]”; “ HOLOTYPE / Paraleucopis  / saguaro/ Wheeler & Sinclair [red label]” ( LEM). PARATYPES: USA. Arizona: same data as holotype (30 ♀, LEM)  ; same data except, CCDB- 23514-F08 (1 ♀, barcoded, LEM)  , CCDB-23514-F07 (1 ♀, barcoded, LEM)  , CCDB-23514-F06 (1 ♀, barcoded, LEM)  ; Saguaro Nat. Mon. , 9.v.1942, A.L. Melander (8 Ƌ, 5 ♀, USNM)  ; McDowell Mtn Pk , 30 mi NE Phoenix, 16.v.1992, R.C. Baptista (1 ♀, USNM)  ; Pima Co., 10 mi NE Tucson, Sabino Canyon , 15.v.1965, R. & J. Matthews (1 ♀, MSUC)  ; Pima Co., Tucson Univ. of Arizona, Desert Station , 32°15′28″N 111°5′1″W, 1.v.2010, S.A. Marshall (8 ♀, DEBU)GoogleMaps  ; Pima Co., Santa Rita Exp. Rng , 31°45′N 110°50′W, 30.iv.–6.v.2010, S. Gray (1 ♀, DEBU)GoogleMaps  ; Tucson , 11.v.1979, C.M. Francis (4 ♀, DEBU)  ; 24 km W Tucson ,, J.R. Vockeroth, ex. on damaged Saguaro (3 Ƌ, 2 ♀, CNC)  .

Recognition. This species is characterized by pruinose clypeus; fronto-orbital setae weak to distinct; antenna mostly yellow, postpedicel darker dorsoapically; face mostly entirely pruinose extended onto anterior portion of gena ( Figs 16, 18View FIGURES 15–18); parafacial pruinose; fore coxa and all femora dark; hind femur without anteroventral preapical setae; surstylus triangular, strongly tapered to narrow apex.

Description. Frons dark to reddish-brown band above antennae; gena dark, sometimes, pale anteriorly. Face mostly pruinose extended onto anterior portion of gena; parafacial pruinose. Fronto-orbital setae weak to distinct. Antenna mostly yellow, with dorsoapical margin of postpedicel sometimes darkened; antennal bases separated by slightly more than length of pedicel. Clypeus pruinose.

Katepisternum with dense pale ventral setae, anterior to mid coxa; short setulae on anterior half. Scutum shiny with dense setulae. Coxae and femora dark, with apex of femora pale; tibiae dark with base and apex pale; tarsomeres on all legs pale with tarsomere 4 and 5 darkened dorsally; mid tibia with dark ventroapical seta, less than one-quarter length of tarsomere 1.

Male postabdomen ( Figs 51View FIGURES 51–53): epandrium rounded, evenly sclerotized, setose on posterior half. Hypandrium broad, with pair of short setae anteriorly; with rounded postgonite apically. Surstylus long, strongly tapered to narrow apex; apex arch posteromedially; setae confined mostly to posterior margin. Distiphallus tapered to narrow apex. Cercus broad, slightly shorter than dorsal length of epandrium; apex rounded.

Female postabdomen: tergite 6 ( Fig. 52View FIGURES 51–53) with bilobed anteriorly margin, broad medially with sinuous posterior margin; posterior corners slightly prolonged with pair of long setae, more than half length of tergite; spermatheca ( Fig. 53View FIGURES 51–53) short, truncate, with short pigmented denticles or papillae; without slender filaments or end apparatus of gland cells.

Distribution. This species is known from southern Arizona ( Fig. 55View FIGURES 54–55).

Etymology. The species is named after its association with Saguaro cactus and is treated as a noun in apposition.

Remarks. DNA Barcode sequence data clearly separates this new species from P. paraboydensis  sp.nov. ( Fig. 56View FIGURE 56).

Adults of this species have been aspirated from skin, around eyes and small cuts on arms and legs ( Figs 1, 2View FIGURES 1–2) ( Marshall 2012: 490), which is similar to behaviour observed in P. mexicana  .


Smithsonian Institution, National Museum of Natural History


Ontario Insect Collection, University of Guelph


Canadian National Collection of Insects, Arachnids, and Nematodes