Brueelia pseudognatha 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: 53

publication ID

publication LSID

persistent identifier

treatment provided by


scientific name

Brueelia pseudognatha Gustafsson & Bush

new species

Brueelia pseudognatha Gustafsson & Bush  , new species

( Figs 63–69View FIGURES 63 – 64View FIGURES 65 – 69)

Type host. Pycnonotus nigricans superior Clancey, 1959  —black-fronted bulbul. Type locality. Potchefstroom, Transvaal, South Africa.

Diagnosis. Brueelia pseudognatha  n. sp. belongs to a group of Brueelia  s. str. that occurs mainly on bulbuls ( Pycnonotidae  ). This group is characterised by the fingerlike extensions of the median margin of the ventral carinae and the abdominal chaetotaxy. The only previously described species that we can positively identify with this group is Brueelia alophoixi Sychra  [in Sychra et al.], 2009. Brueelia guldum Ansari, 1955a  , probably belongs to this group, but illustrations of Br. guldum  given by Ansari (1958a) are not detailed enough to be certain. Brueelia pseudognatha  and Br. alophoixi  can readily be separated by head shape, with Br. alophoixi  having a shorter, more trapezoidal head, and Br. pseudognatha  ( Fig. 65View FIGURES 65 – 69) having a more oblong head. In addition, male Br. pseudognatha  have fewer and shorter abdominal setae, especially on segments VIII –IX ( Fig. 42View FIGURES 42 – 43).

Description. Both sexes. Head shape, structure, and chaetotaxy as in Fig. 65View FIGURES 65 – 69. Marginal carina slightly widened at clypeo-labral suture. Ventral anterior plate small. Short vsms2 located in clypeo-labral suture, not on lateral margin. Lateral margins of clypeo-labral suture with distinct protruding finger at anterior end of pulvinus. Preantennal nodi oblong. Coni broad, reaching distal margin of scape. Pre- and post-ocular nodi small. Gular plate spade-shaped. Thoracic and abdominal segments as in genus description and Figs 63–64View FIGURES 63 – 64; 4 mms on each side, alternating between short and long setae. Proepimera broad, median ends curled around coxae II. Median ends of metepisterna broad, blunt. Tergopleurites almost entirely translucent. Sternal plates weakly pigmented, but slightly darker around edges.

Male. Abdominal chaetotaxy as in Table 3 and Fig. 63View FIGURES 63 – 64. tps  present on segment VIII. Subgenital plate slenderly trapezoidal ( Fig. 63View FIGURES 63 – 64). Male genitalia ( Fig. 66View FIGURES 65 – 69) typical for genus. Proximal mesosome broadly rounded. Gonopore ( Fig. 67View FIGURES 65 – 69) narrowly open distally. Parameral blades ( Fig. 68View FIGURES 65 – 69) slightly elongated distally; pst1 sensillus, submarginal near distal tip; pst2 seta, lateral near distal tip. Measurements ex Pycnonotus nigricans superior  (n = 2): TL = 1.69– 1.78; HL = 0.35; HW = 0.28; PRW = 0.18; PTW = 0.28; AW = 0.37–0.38.

Female. Abdominal chaetotaxy as in Table 3 and Fig. 64View FIGURES 63 – 64. Subgenital plate ( Fig. 69View FIGURES 65 – 69) slenderly pentagonal, flaring into cross-piece at vulval margin. Sutural setae present on tergopleurite VIII. Vulval margin slightly protruding medianly ( Fig. 69View FIGURES 65 – 69), with 3–4 slender vms on each side, and 4 short, thorn-like vss on each side; 3–4 slender vos on each side anterior to cross-piece, and 1 slender vos median to vss. Measurements ex Pycnonotus nigricans superior  (n = 2): TL = 1.48–1.55; HL = 0.33; HW = 0. 26; PRW = 0.17; PTW = 0.25–0.26; AW = 0.33– 0.35.

Etymology. The species epithet is derived from Greek “ pseudos ” for “false” and “ gnathos ”, for “jaw”, referring to the fingerlike extension of the ventral carinae ( Fig. 65View FIGURES 65 – 69).

Type material. Holotype ♂, Potchefstroom , Transvaal, South Africa, 12 Jul. 1954, H.E. Paterson, Brit. Mus. 1955-660 ( NHML)  . Paratypes: 1♀, same data as holotype ( NHML)  ; 1♂, 1♀, Potchefstroom, Transvaal, 1 Oct. 1953, Brit. Mus. 1954-474 ( NHML)  ; 1♀, Free State, South Africa, 2 Aug. 1998, K. Johnson, PIPeR #150, voucher for sequence Brsp.Pynig. 2.10.1999.3 (PIPeR). 


Natural History Museum, Tripoli