Brueelia aguilarae Gustafsson & Bush

Bush, Sarah E., 2017, Morphological revision of the hyperdiverse Brueelia - complex (Insecta: Phthiraptera: Ischnocera: Philopteridae) with new taxa, checklists and generic key, Zootaxa 4313 (1), pp. 1-443: 45-48

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Brueelia aguilarae Gustafsson & Bush

new species

Brueelia aguilarae Gustafsson & Bush  , new species

( Figs 49–55View FIGURES 49 – 50View FIGURES 51 – 55)

Type host. Euplectes franciscanus (Isert, 1789)  —northern red bishop. Type locality. Somaliland , Somalia. 

Diagnosis. Brueelia aguilarae  n. sp. belongs to a group of Old World Brueelia  s. str. that are very strikingly pigmented in black and white. Only three species have previously been described in this Old World striped group: Brueelia plocea (Lakshminayarana, 1968)  , Brueelia cantans Sychra  [in Sychra et al.], 2010a, and Brueelia queleae Sychra & Barlev  [in Sychra et al.], 2010b. These lice are similar to the Brueelia  s. str. from icterids in the New World (the “ ornatissima  ” group, sensu Cicchino & Castro, 1996  ), but unlike the New World group, the Old World group lacks dark pigmentation on the tergopleurites (except VIII –XI), and has a different pattern of abdominal chaetotaxy [cf. Br. aguilarae  ( Figs 49–50View FIGURES 49 – 50) and Br. ornatissima  , Table 3].

Brueelia aguilarae  is most similar to Br. plocea  , which has a similar head shape and few abdominal setae ( Figs 49–50View FIGURES 49 – 50). These two species differ in the following characters: darkly pigmented bands on anterior and posterior margins of sternal plates not connected laterally in Br. plocea  , but connected in Br. aguilarae  ( Figs 49–50View FIGURES 49 – 50); 2 ps on each side on male abdominal segment IV in Br. plocea  but only 1 ps per side in Br. aguilarae  ( Fig. 49View FIGURES 49 – 50); mesosomal lobes rounded in Br. plocea  but angular in Br. aguilarae  ( Fig. 53View FIGURES 51 – 55); male subgenital plate predominantly unpigmented in Br. plocea  but predominantly darkly pigmented in Br. aguilarae  ( Fig. 49View FIGURES 49 – 50). Lakshminarayana (1968) did not describe the female of Br. plocea  , and comparisons of the females of the two species is currently not possible.

Description. Both sexes. Head shape, structure, and chaetotaxy as in Fig. 51View FIGURES 51 – 55. Marginal carina slightly widened at clypeo-labral suture. Ventral anterior plate absent. Attachment areas of mandibular adductor muscles prominent in males. Short vsms2 located on lateral margin of clypeo-labral suture. Preantennal nodi long, slender. Coni short, blunt, not reaching distal margin of scape. Pre-ocular nodi somewhat elongated, post-ocular nodi small. All mts  except mts  3 minute, easier to locate based on attendant canals in marginal temporal carina. Gular plate broadly lanceolate. Dark pigmentation on marginal carina (except anterior sixth and osculum), preantennal nodi, margins of antennal socket, marginal temporal carina (except at occiput), pedicel and flagellomeres I –III, and anterior half of gular plate. Thoracic and abdominal segments as in Figs 49–50View FIGURES 49 – 50; 5 mms on each side, alternating between short and long setae. Proepimera broad, median ends hooked around coxae II. Median ends of metepisterna broad, blunt. Dark pigmentation on meso- and metasterna, pro-, mes-, and metepisterna, proepimera, anterior end of pronotum. Legs with nodi distinctly pigmented, and connected by dark, diffuse bands. Tergopleurites entirely translucent, except posterior margins of tergopleurites VIII and IX+X in both sexes, and much of tergopleurite XI in females. Sternal plates II –VI and subgenital plates of both sexes with dark pigmentation except centrally ( Figs 49–50View FIGURES 49 – 50).

Male. Abdominal chaetotaxy as in Table 3 and Fig. 49View FIGURES 49 – 50. Subgenital plate irregularly trapezoidal ( Fig. 32View FIGURES 31 – 34), with four fenestrae: a transversal band in anterior end, a pair of roughly C-shaped areas laterally, and a central oblong area. Male genitalia ( Fig. 52View FIGURES 51 – 55) typical for genus. Extrusor muscles barely visible. Proximal mesosome broadly rounded. Gonopore ( Fig. 53View FIGURES 51 – 55) widely open distally. Parameral blades ( Fig. 54View FIGURES 51 – 55) slightly elongated distally, broad; pst1 sensillus, near distal tip; pst2 seta, on lateral margin near distal tip. Measurements ex Euplectes franciscanus  (n = 2): TL = 1.26–1.32; HL = 0.30–0.31; HW = 0.23–0.24; PRW = 0.15–0.16; PTW = 0.23–0.24; AW = 0.30– 0.33.

Female. Abdominal chaetotaxy as in Table 3 and Fig. 50View FIGURES 49 – 50. Subgenital plate pentagonal, flaring distally, but not reaching vulval margin ( Fig. 55View FIGURES 51 – 55), with 3 fenestrae: one central T-shaped area and two smaller areas laterally. Vulval margin bulging medianly ( Fig. 55View FIGURES 51 – 55), with 4–5 (rarely 3) short, slender vms on each side, and 6–7 short, thorn-like vss on each side; 2 vos on each side anterior to cross-piece, and 1 vos on each side median to vss. Measurements ex Euplectes franciscanus  (n = 4): TL = 1.42–1.62; HL = 0.32–0.34; HW = 0.25–0.26; PRW = 0.16–0.17; PTW = 0.25–0.29; AW = 0.33–0.38.

Etymology. The species epithet is in honour of Ms Alexandra Aguilar, previously an undergraduate in the Clayton/Bush lab (University of Utah, Salt Lake City, Utah) who contributed immensely to this project at the initial stages, and gave much technical assistance.

Type material. Ex Euplectes franciscanus  : Holotype ♂, “ Somaliland ”, Somalia, Feb. 1949, R. Meinertzhagen, 18634-5, marked with black dot on slide ( NHML)  . Paratypes: 1♂, 4♀, same data as holotype ( NHML)  .


Natural History Museum, Tripoli