Ceraturgus (Ceraturgopsis) johnsoni Martin

Barnes, Jeffrey K., 2008, Review of the genus Ceraturgus Wiedemann (Diptera: Asilidae) in North America north of Mexico, Zootaxa 1766, pp. 1-45 : 40-43

Ceraturgus (Ceraturgopsis) johnsoni Martin

( FIGS 10 D, 10E, 13)

Ceraturgus johnsoni Martin, 1965: 119 .

Type material examined. Holotype, female, UNITED STATES: “ Holotype, Ceraturgus johnsoni Chas. H. Martin ” (pink label), “FLORIDA”, “C. W. Johnson Collection”, “M. C. Z. Holotype 32752” (red label), " Ceraturgus johnsoni Martin det. C. H. Martin 1963”, “ Jan.–July 2003 MCZ image database”, MCZ. Paratype, female, UNITED STATES: “FLORIDA”, “C. W. Johnson Collection”, " Paratype Ceraturgus johnsoni Chas. H. Martin ” (yellow label), “M. C. Z. Paratype 32752” (pink label), MCZ. Paratype, male, UNITED STATES: “FLORIDA”, “C. W. Johnson Collection”, " Ceraturgopsis cornutus (Wd.) ” (handwritten label with red outline), USNM. These specimens were incorrectly identified by Johnson as C. cornutus . They are the basis for the genus Ceraturgopsis Johnson. According to Johnson (1903), they were collected in Ormond (Volusia County), Florida, in April by Mrs. Annie T. Slosson.

Additional material examined. UNITED STATES. FLORIDA. County unknown: “S. Fla.”, March 1923, J. S. Hine, Ψ, OSU; “Florida”, C. W. Johnson, ɗ, USNM; “Fla.”, A. T. Slosson, Ψ, AMNH. Citrus County: 20 March 1957, H. V. Weems, Jr., Ψ, CSCA. Levy County: Gunntown (Gulf Hammock), March, P. Laurent, 2 Ψ, ANSP; Gulf Hammock, 23 April 1952, J. R. Vockeroth, Ψ, CNC. Liberty County: Torreya State Park near Rock Bluff, 21 April 1989, J. M. Cumming, Ψ, CNC. Volusia County: Ormond, A. T. Slosson, ɗ, AMNH.

Female. Body length: 13.7–17.6 mm (mean ± S.D.: 14.8 ± 1.4).

Head. Width 1.5 times eye height. Face golden tomentose. Frons, vertex except for ocellar tubercle, postcranium, and gena golden pollinose. Face with mystax of golden setae confined to lower fifth; upper face with sparse, short golden setae reaching to antennal bases. Frons laterally with short golden setae. Ocellar triangle tuberculate, with about 14 golden setae. Postocular setae golden, stout. Postgena and stipes with dense vestiture of long, slender, apically crinkled, golden hair-like setae. Proboscis brown, laterally compressed, about 4 times as long as deep. Palpal segments about equal in length, basal segment brown, apical segment golden pollinose, both segments with long golden setae. Antenna 3.2–3.4 mm long; scape golden pollinose, with golden ventrolateral setae; pedicel and flagellomeres dark brown (holotype flagellomeres missing); antennomere:scape ratios (allotype specimen) 1.0:1.0:3.4:0.4:1.1.

Thorax. Cervical sclerites brown, with dense vestiture of long, slender, apically crinkled, golden hair-like setae. Pronotum golden pollinose, with sparse pile of long, slender, golden setae covering antepronotum and posterolateral corners of postpronotum; postpronotal lobe with erect golden setae along anterior edge and short, reclinate, golden hair-like setae on disc. Propleuron with dense vestiture of long, declinate, golden hairlike setae on proepisternum and reclinate hair-like setae on anterior portion of proepimeron. Prosternum golden pollinose centrally, brown laterally, lacking setae. Scutum reddish brown in ground color, golden pollinose except for wide central brown vitta extending from pronotum nearly to scutellum and pair of broad posterolateral patches, each divided by narrow line of golden pollen along transverse suture, reaching from behind postpronotal lobes almost to scutellum; with sparse, short, reclinate golden hair-like setae throughout, including non-pollinose areas, and prescutellar patch of longer, reclinate, golden hair-like setae. Lateral margin of scutum with 3–5 strong, pale presutural setae and 5–7 strong, pale postsutural, supra-alar setae. Postalar callus with 3–4 stout golden setae and many short hair-like setae. Scutellum golden pollinose, with short, golden hair-like setae on disc and 6 moderately strong golden setae and several fine hair-like setae along margin; marginal scutellar setae shorter than or equal to length of scutellum. Mediotergite brown. Anatergite and katatergite golden pollinose; katatergite with a fan of long, slender, apically crinkled, golden hair-like setae. Mesopleural sclerites mostly golden pollinose, less so on lower katepisternum and meron. Posterior half of anepisternum covered with long, fine, golden, apically crinkled hair-like setae; dorsal setae declinate, ventral setae reclinate. Anterior basalare brown; posterior basalare silvery pollinose. Katepisternum with a few fine, golden hair-like setae centrally. Anepimeron, katepimeron, and meron lacking setae. Basal swelling of pleural wing process golden pollinose. Subalar sclerite brown. Metepisternum and metepimeron golden pollinose; metepimeron with long, fine, apically crinkled, golden hair-like setae.

Legs. Uniformly golden brown. Coxae golden pollinose on anterior and lateral surfaces, brown on posterior surface; prothoracic and mesothoracic coxae densely covered with long, slender, golden, apically crinkled hair-like setae on anterior and lateral surfaces; metathoracic coxa with similar hair-like setae anteroventrally and posterolaterally. All trochanters, femora, tibiae, and tarsi shining golden brown; all claws black with brown base. All femora with circlets of several stout, golden setae near apex and 2–4 golden setae on anterior surface near middle. Prothoracic tibia with anterodorsal and posterodorsal row of short golden setae and posteroventral row of long golden setae; mesothoracic tibia with anterodorsal, anteroventral, and posteroventral rows of long golden setae, posterodorsal row with weaker setae; metathoracic tibia with dorsal, anterior and anteroventral rows of long golden setae. First tarsomere subequal in length to second and third combined. All pulvilli pale yellow.

Wing ( FIG.10 E). 10.7–14.2 mm long (mean ± S.D.: 12.5 ± 1.1). Almost uniformly medium brown, somewhat lighter posteriorly, with small dark area near anterior margin in vicinity of apex of vein Sc; small area of membrane at base of cell r1 and corresponding area across vein R 1 in cell sc hyaline; small area of membrane at base of cell d hyaline. Halter with stem golden brown, knob brown.

Abdomen. Tergites 1–7 with broad shining brown anterior margin and broad golden pollinose posterior marginal bands; pollinose bands of tergites 2–5 broadest in middle, not significantly widened at lateral margins; tergite 1 with long, slender, apically crinkled, golden anterolateral hair-like setae and about 9–12 posterolateral golden setae. Sternites 1–4 golden pollinose, with long, slender, apically crinkled, golden hair-like setae; sternites 5–7 golden pollinose, but with anterior shining brown areas and shorter hair-like setae than preceding sternites.

Male. Similar to female except as follows:

Body length: 14.4–16.0 mm.

Head. Mystax dense, consisting of many long, apically crinkled, golden hair-like setae. Antenna 3.3 mm long; antennomere:scape ratios 1.0:1.0:3.7:0.4:1.0.

Thorax. Hair-like setae of postpronotal lobe and prescutellar area of scutum dense and long. Marginal scutellar setae as long as or longer than length of scutellum.

Legs. Prothoracic and mesothoracic coxae densely covered with long, apically crinkled golden, hair-like setae. All femora with many long, apically crinkled, golden hair-like setae ventrally; metathoracic femora with anterior row of 2–3 golden setae; metathoracic femur with anterior row of 4–5 golden setae. Prothoracic tibia with thick ventral brush of very long, apically crinkled, golden hair-like setae, mesothoracic tibia with sparse anterodorsal, anteroventral, and posteroventral rows of long golden hair-like setae. All pulvilli pale yellow.

Wing ( FIG. 10 D). 11.7–12.9 mm long (mean: 12.3). Similar to female wing.

Abdomen. Tergites 1–6 with broad shining brown anterior margin and broad golden pollinose posterior margin. Sternites 1–6 golden pollinose, 3–6 shining brown anteromedially.

Distribution ( FIG. 13 ). Florida.

Discussion. Martin (1965) figured the antenna of C. johnsoni and the wing and abdominal tergites of C. johnsoni and C. cornutus .

Specimens have been collected in March and April.

Figures

FIGURE 10. Ceraturgus, right wing, dorsal view: A, C. oklahomensis, male; B, C, C. cornutus, male and female, respectively; D, E, C. johnsoni, male and female, respectively.

FIGURE 13. Distribution of Ceraturgus johnsoni by county.