Priceiella (Torosinirmus) koka 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: 189-193

publication ID

publication LSID

persistent identifier

treatment provided by


scientific name

Priceiella (Torosinirmus) koka Gustafsson & Bush

new species

Priceiella (Torosinirmus) koka Gustafsson & Bush  , new species

( Figs 307–314View FIGURES 307 – 308View FIGURES 309 – 314, 318View FIGURES 315 – 318)

Type host. Turdoides tenebrosa (Hartlaub, 1883)  —dusky babbler. Type locality. Koka, Ethiopia.

Diagnosis. Priceiella (Torosinirmus) koka  n. sp. is most similar to Pr. (Ts.) nivea ( Ansari, 1956a)  , with which it shares the long parameres [ Fig. 313View FIGURES 309 – 314; parameres of Pr. (Ts.) brueliodes  much shorter, broader]. In both Pr. (Ts.) koka  and Pr. (Ts.) nivea  the divergent part of the paramere is shorter, compared to the convergent part, than in Pr. (Ts.) brueliodes  . Priceiella (Ts.) koka  ( Figs 307–308View FIGURES 307 – 308) also shares the larger number of pterothoracic setae with Pr. (Ts.) nivea  . Moreover, the antennae of Pr. (Ts.) koka  ( Figs 309–310View FIGURES 309 – 314) and Pr. (Ts.) nivea  are sexually dimorphic, which is not the case for Pr. (Ts.) brueliodes  .

The most significant difference between Priceiella (Torosinirmus) koka  and Pr. (Ts.) nivea  is the shape of the mesomere, which in the latter species is rounded both anteriorly and posteriorly, whereas the mesomere of Pr. (Ts.) koka  ( Fig. 312View FIGURES 309 – 314) is broader and entirely flat anteriorly, and more angular posteriorly. Males separated by the setae of tergopleurite IX+X [2 in  Pr. (Ts.) nivea, 3–4 in Pr. (Ts.) koka  ] and the unequal size of the setae of the genital opening in Pr. (Ts.) koka  , but equal size of all setae in Pr. (Ts.) nivea  .

Females of all three species cannot be reliably identified presently. The differences in genital setae [5 vms and 6 vss on each side in Priceiella (Torosinirmus) nivea  , 4 vms and 9 vss on each side in Pr. (Ts.) brueliodes  , and 3–5 vms and 5–7 vss on each side in Pr. (Ts.) koka  ] may seem reliable, but Ansari’s (1956a) descriptions are based on single specimens of each species, and thus potential overlap between his Pr. (Ts.) brueliodes, Pr. (Ts.) nivea  , and Pr. (Ts.) koka  is likely underestimated. Differences in abdominal chaetotaxy between the three species may also be illusory, for the same reason. However, Pr. (Ts.) koka  ( Fig. 309View FIGURES 309 – 314) generally has a flatter frons than either of the other two species. Adequate comparison between females of the three species must await additional collections from the type hosts of Pr. (Ts.) nivea  and Pr. (Ts.) brueliodes  .

Description. Both sexes. Head shape, structure, and chaetotaxy as in genus and subgenus descriptions and Fig. 309View FIGURES 309 – 314. Preantennal nodi moderate. Coni much short, broad, not reaching distal margin of scapes. Antennae sexually dimorphic ( Figs 309–310View FIGURES 309 – 314). Preocular nodi moderate. Postocular nodi small. Gular plate short, squat. Thoracic and abdominal segments as genus and subgenus descriptions and Figs 307–308View FIGURES 307 – 308. Tergopleurites largely translucent, but with weak pigmentation lateral to spiracle openings. Sternal plates III –VI and subgenital plates of both sexes with weak pigmentation. Pleurites not modified as in other Priceiella  ( Fig. 318View FIGURES 315 – 318).

Male. Scape long, slightly swollen, curved posteriorly ( Fig. 309View FIGURES 309 – 314). Pteronotum with 8–9 posterior setae on each side ( Fig. 307View FIGURES 307 – 308). Abdominal plates and chaetotaxy as in Table 8 and Fig. 307View FIGURES 307 – 308. Tergopleurite IX+X with 3–4 setae clustered submedianly. Setae of genital opening of unequal size, with lateral 2 setae 3–4 times as long as median seta. Male genitalia as in Figs. 311–313View FIGURES 309 – 314. Basal apodeme roughly rectangular, lateral margins straight or only slightly concave. Proximal mesomere short, broad, not overlapping with basal apodeme; anterior margin flat. Primary mesomeral lobes broad, gently rounded, somewhat angular in some specimens. Lateral and distal margins thickened, but thickening not sinuous and do not extend medianly towards the gonopore ( Fig. 312View FIGURES 309 – 314). Ventral side with small protruding nodi near distal margin. Distal margin of mesomere convergent to median point. Parameral heads small, blunt. Parameral blades ( Fig. 313View FIGURES 309 – 314) stout, divergent in distal third only. Measurements ex Turdoides tenebrosa  (n = 7): TL = 1.21–1.40; HL = 0.35–0.37; HW = 0.33–0.36; PRW = 0.20–0.24; PTW = 0.35–0.38; AW = 0.49–0.52.

Female. Scape as in Fig. 310View FIGURES 309 – 314. Pteronotum with 4–6 posterior setae on each side (most specimens with 5 on each side) ( Fig. 308View FIGURES 307 – 308). Abdominal plates and chaetotaxy as in Table 8 and Fig. 308View FIGURES 307 – 308. Subgenital plate roughly triangular ( Fig. 314View FIGURES 309 – 314). Vulval margin ( Fig. 314View FIGURES 309 – 314) gently rounded, with 3–5 slender vms on each side, and 5–7 thornlike vss on each side; 4–5 vos on each side; distal vos located on cross-piece, just anterior to vss. Measurements ex Turdoides tenebrosa  (n = 10): TL = 1.61–1.75; HL = 0.36–0.42; HW = 0.35–0.39; PRW = 0.21–0.25; PTW = 0.35– 0.39; AW = 0.49–0.58.

Etymology. The species name is derived from the type locality.

Type material. Ex Turdoides tenebrosa  : Holotype ♂, Koka, Ethiopia, 18 Dec. 1960, S. Brelih, IM-7402 ( PMSL)  . Paratypes: 5♂, 4♀, same data as holotype, IM-7 401, IM-7403, IM-6405–14 ( PMSL)  ; 2♂, 5♀, Awassa , Ethiopia, 5 Nov. 1960, S. Brelih, IM-3199–3205 ( PMSL)  .


Slovenian Museum of Natural History (Prirodosloveni Muzej Slovenije)