Brueelia tenebrosa, Gustafsson & Bush, 2021

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 : 2103-2107

publication ID	https://doi.org/ 10.1080/00222933.2020.1836280
publication LSID	lsid:zoobank.org:pub:6D472E90-DCD1-471F-8A9C-B260C2F2074D
DOI	https://doi.org/10.5281/zenodo.5030762
persistent identifier	https://treatment.plazi.org/id/336B879A-0C6A-FFE2-FE37-FA77FD96A4EB
treatment provided by	Carolina
scientific name	Brueelia tenebrosa
status	sp. nov.

Treatment

Brueelia tenebrosa sp. nov.

( Figure 17–18 View Figure 17 View Figure 18 )

Type host

Passerella iliaca ( Merrem 1786) – fox sparrow.

Type locality

Sullivan Canyon, Los Angeles County, California, United States .

Diagnosis

Brueelia tenebrosa sp. nov. is most similar to B. melospizae sp. nov., with which it shares the following characters: ss present on male tergopleurite V ( Figure 15a View Figure 15 , 17a View Figure 17 ); tps and aps present on male tergopleurite VII ( Figure 15a View Figure 15 , 17a View Figure 17 ). These two species can be separated by the following characters: aps absent on male tergopleurite VI in B. tenebrosa ( Figure 17a View Figure 17 ), but present in B. melospizae ( Figure 15a View Figure 15 ); ps absent on male abdominal segment III in B. tenebrosa ( Figure 17a View Figure 17 ), but present in B. melospizae ( Figure 15a View Figure 15 ); preantennal head proportionately broader and shorter in B. tenebrosa ( Figure 18a View Figure 18 ) than in B. melospizae ( Figure 16a View Figure 16 ); proximal mesosome narrower in B. tenebrosa ( Figure 18c View Figure 18 ) than in B. melospizae ( Figure 16c View Figure 16 ); rugose area of mesosome more extensive in B. tenebrosa ( Figure 18c View Figure 18 ) than in B. melospizae ( Figure 16c View Figure 16 ); parameres slender in B. tenebrosa ( Figure 18d View Figure 18 ), but stout in B. melospizae ( Figure 16d View Figure 16 ). Females best separated on head shape and pigmentation patterns (see below).

Description

Both sexes. Head convex dome-shaped ( Figure 18a View Figure 18 ), lateral margins of preantennal area convex, frons flat to slightly concave. Marginal carina broad, width irregular, much displaced and widened at osculum. Ventral anterior plate small, crescent-shaped to triangular. Head chaetotaxy as in Figure 18a View Figure 18 . Preantennal nodi large, bulging. Preocular nodi large, postocular nodi moderate. Marginal temporal carina with irregular median margin. Gular plate broadly lanceolate. Thoracic and abdominal segments as in 17A–B. Base pigmentation yellowish brown; marginal and marginal temporal carinae, head nodi, margins of antennal sockets, anterior end of gular plate, proepimera, metepisterna, sternal and subgenital plates, and most of tergopleurites except central area around spiracle opening darker.

Male. Thoracic and abdominal chaetotaxy as in Figure 17a View Figure 17 ; ss present on tergopleurite V, tps and aps present on tergopleurite VII, tps absent from tergopleurite VI; ps absent from abdominal segment III. Basal apodeme broad, constricted at mid-length, but widening anteriorly ( Figure 18b View Figure 18 ). Proximal mesosome somewhat elongated, narrowly rounded ( Figure 18c View Figure 18 ). Mesosomal lobes wide, angular; rugose area covers most of ventral surface of lobes in distal end; 2 pmes sensilla on each side lateral to gonopore. Gonopore long, crescent-shaped. Penile arms short, not reaching distal margin of mesosome. Parameres elongated, slender, pst1–2 as in Figure 18d View Figure 18 . Measurements (n = 7 except TL where n = 6): TL = 1.47–1.62; HL = 0.35–0.38; HW = 0.30–0.32; PRW = 0.18–0.21; PTW = 0.28–0.32; AW = 0.36–0.42.

Female. Thoracic and abdominal chaetotaxy as in Figure 17b View Figure 17 ; ps present on abdominal segment III. Lateral margins of proximal subgenital plate concave ( Figure 18e View Figure 18 ), with broad connection to cross-piece. Vulval margin gently rounded ( Figure 18e View Figure 18 ), with 3–4 short, slender vms and 2–3 short, thorn-like vss on each side; 3–4 short, slender vos on each side of subgenital plate; distal 1 (rarely 2 on one side) vos median to vss. Measurements (n = 21): TL = 1.67–1.81 (1.74); HL = 0.37–0.41 (0.39); HW = 0.31–0.34 (0.33); PRW = 0.19–0.22 (0.20); PTW = 0.29–0.36 (0.33); AW = 0.38–0.44 (0.41).

Etymology

Specific name derived from Latin ‘ tenebrosus ’ for ‘dark’, referring to the extensive dark pigmentation of this species.

Material examined

Ex Passerella iliaca (subspecies unknown): Holotype ♂, Sullivan Canyon , Los Angeles County, California, United States, 19 March 1985, M .A. Marin, 4 ( NHML). Paratypes. 1♂, 6♀, same data as holotype ( NHML); 5♂, 15♀, Virginia [ United States], Feb . 1939, R. Meinertzhagen, 12,639 ( NHML).