Brueelia angustifrons ( Carriker 1902 )

Gustafsson, Daniel R. & Bush, Sarah E., 2021, Descriptions of seven new species of Brueelia Kéler 1936 (Phthiraptera: Ischnocera: Philopteridae) from North American sparrows (Aves: Passeriformes: Passerellidae), and review of host use by Brueelia vulgata, Journal of Natural History 54 (33 - 34), pp. 2071-2112 : 2078-2082

Brueelia angustifrons ( Carriker 1902)

Nirmus angustifrons Carriker 1902, p. 221

Degeeriella angustifrons Carriker [1902] ; Harrison 1916, p. 108

Brueelia angustifrons ( Carriker, 1902) ; Hopkins and Clay 1952, p.53

Type host

Chondestes grammacus strigatus Swainson 1827 – lark sparrow.

Type locality

Little Bad Lands, Souix County, Nebraska, United States .

Other hosts

Chondestes grammacus grammacus ( Say 1822) – lark sparrow.

Description

Both sexes. Head elongated dome-shaped ( Figure 4a ), lateral margins of preantennal area convex, frons rounded. Marginal carina narrow, much displaced and widened at osculum. Ventral anterior plate small, roughly oval. Head chaetotaxy as in Figure 4a . Preantennal nodi small, not bulging. Pre-ocular nodi large, post-ocular nodi moderate. Marginal temporal carina with very irregular median margin. Gular plate lanceolate. Thoracic and abdominal segments as in Figure 3a–b . Head and thorax medium brown, darker at head carinae, gular plate, and area anterior to antennal socket; sternal and subgenital plates and antero-lateral section of tergopleurites medium brown, posterior and median sections of tergopleurites pale, giving a striped appearance; pigmentation of abdomen darker in female than in male.

Male. Thoracic and abdominal chaetotaxy as in Figure 3a ; ss absent from tergopleurite V; tps absent from tergopleurites II–VII; aps present on tergopleurites VI–VII; ps present on segment III. Basal apodeme narrowing anteriorly ( Figure 4b ). Proximal mesosome long, broad, roughly trapezoidal ( Figure 4c ). Mesosomal lobes unlike any other in Brueelia , with slender lateral thickenings, no rugose area, and 1 lateral pmes microseta on each side. Gonopore wide, flattened crescent-shaped with antero-lateral projections on each side; median section of gonopore slightly rugose. Penile arms minute, not reaching distal margin of mesosome. Parameres short, not elongated distally, pst1–2 as in Figure 4d . Measurements ex Chondestes grammacus strigatus (n = 2): TL = 1.19–1.42; HL = 0.32–0.35; HW = 0.24–0.26; PRW = 0.15–0.16; PTW = 0.22–0.25; AW = 0.30–0.33. Measurements ex Ch. g. grammacus (n = 6): TL = 1.36–1.63; HL = 0.34–0.37; HW = 0.24–0.26; PRW = 0.15–0.17; PTW = 0.23–0.25; AW = 0.32–0.41.

Female. Thoracic and abdominal chaetotaxy as in Figure 3b ; ps absent on segment III. Lateral margins of proximal subgenital plate more or less parallel ( Figure 4e ), narrow connection to cross-piece. Vulval margin gently rounded ( Figure 4e ), with 3 short, slender vms and 3–4 short, thorn-like vss on each side; 4–5 short, slender vos on each side of subgenital plate; distal 1 vos median to vss. Measurements ex Chondestes grammacus strigatus (n = 5): TL = 1.41–1.63; HL = 0.34–0.38; HW = 0.25–0.28; PRW = 0.16–0.18; PTW = 0.24–0.27; AW = 0.32–0.41. Measurements ex Ch. g. grammacus (n = 6): TL = 1.59–1.73; HL = 0.37–0.41; HW = 0.27–0.30; PRW = 0.17–0.19; PTW = 0.26–0.29; AW = 0.38–0.41.

Material examined

Ex Chondestes grammacus (subspecies unknown). 1♂, 1♀, 25 December 1935, EWS ( UMSP) .

Ex Chondestes grammacus grammacus . 4♂, 4♀, Red River , near Idabel, McCurtain County, Oklahoma, United States, 13 April 1958, G .M. Sutton, GMS-13,566 (PIPeR); 2♂, 2♀, same data ( NHML) .

Ex Chondestes grammacus strigatus . 2♂, 4♀, North Skull Valley , Tooele County, Utah, United States, 11 June 1964, E . & E. Branch, 5360, one slide PIPeR #126 (PIPeR); 1♀, Dugway Area , Tooele County, Utah, United States, May-Jun . 1966, E. & E. Branch (PIPeR). Remarks

Carriker’s (1902) original illustration appears to be drawn from an individual with a laterally compressed head, which results in the differences in head shape between his illustrations and ours.

Figures

Figure 3. Brueelia angustifrons (Carriker 1902) ex Chondestes grammacus strigatus Swainson 1827. (a) male habitus, dorsal and ventral views; (b) female habitus, dorsal and ventral views.

Figure 4. Brueelia angustifrons (Carriker 1902) ex Chondestes grammacus strigatus Swainson 1827. (a) male head, dorsal and ventral views; (b) male genitalia, dorsal view (c) male mesosome, ventral view; (d) male paramere, dorsal view; (e) female subgenital plate and vulval margin, ventral view.