Couala dodekopter 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: 308-311

publication ID

https://doi.org/10.11646/zootaxa.4313.1.1

publication LSID

lsid:zoobank.org:pub:A5Fdfba5-F992-44A8-84C2-1756C943C19B

persistent identifier

http://treatment.plazi.org/id/832187E9-FEB9-FEF5-FF74-647EFB21FBB3

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Plazi

scientific name

Couala dodekopter Gustafsson & Bush
status

new species

Couala dodekopter Gustafsson & Bush  , new species

( Figs 512–517View FIGURES 512 – 513View FIGURES 514 – 517)

Type host. Coua cristata pyropyga Grandidier, 1867  —crested coua  . Type locality. Betioky, Atsimo-Andrefana Region, Madagascar.

Diagnosis. Couala dodekopter  n. sp. is not particularly similar to either of the other two species in the genus, and can be separated from these by the following charaters: temporal angle of Cl. goniodes  and Cl. angulata  ( Fig. 520View FIGURES 520 – 523) acute, whereas that of Cl. dodekopter  ( Fig. 514View FIGURES 514 – 517) is right or slightly obtuse; marginal carina is shallowly displaced at the osculum in Cl. goniodes  and Cl. angulata  ( Fig. 520View FIGURES 520 – 523), but deeply displaced in Cl. dodokopter  ( Fig. 514View FIGURES 514 – 517); the mts  2 is ventral, curved, and very thick in the former two species ( Fig. 520View FIGURES 520 – 523), but dorsal, thorn-like, and straight in Cl. dodekopter  ( Fig. 514View FIGURES 514 – 517). Abdominal and thoracic characters are also more similar between Cl. angulata  ( Figs 518–519View FIGURE 518 – 519) and Cl. goniodes  than either of them are to Cl. dodekopter  ( Figs 512–513View FIGURES 512 – 513). For instance, the female abdomen is short and wide in both Cl. goniodes  and Cl. angulata  ( Fig. 519View FIGURE 518 – 519), and the ventral sections of the tergopleurites of both these species are large and rectangular, whereas the female abdomen in Cl. dodekopter  ( Fig. 513View FIGURES 512 – 513) is more elongated and slender, and the ventral sections of the tergopleurites are more triangular.

Description. Both sexes. Head shape, structure, and chaetotaxy as in genus description and Fig. 514View FIGURES 514 – 517. Temples somewhat angular, occiput more or less flat. Marginal and marginal temporal carinae broad. Preantennal, preocular, and post-ocular nodi large. Ventral carina slender anterior to pulvinus, and clearly continuous with marginal carina. Coni long, but not reaching beyond distal margin of scape. Lateral margin of antennal canal clearly demarcated, reaching posterior margin of head between mts  2–3; median margin of canal not clear anteriorly; mts  2 spine-like, not curved, ventral or marginal. Gular plate spade-shaped. Thoracic and abdominal segments as in genus description and Figs 512–513View FIGURES 512 – 513.

Male. Subgenital plate broadly trapezoidal. Abdominal chaetotaxy as in Table 2 and Fig. 512View FIGURES 512 – 513. Male genitalia distinctive ( Figs 515–516View FIGURES 514 – 517). Basal apodeme long, slender. Mesosome fused to basal apodeme, proximal mesosome visible only as arched thickening. Gonopore large ( Fig. 516View FIGURES 514 – 517), wider than long, widely open distally. Mesosomal lobes fused to parameres and cannot be distinguished from these; 2 ames sensilla on each side lateral to gonopore; 2 pmes sensilla on each side postero-lateral to gonopore. Parameral blades divergent, shaped as in Fig. 515View FIGURES 514 – 517; pst1–2 as in genus description. Measurements ex Coua cristata pyzopyga  (n = 10 except n = 9 for TL): TL = 1.44–1.54; HL = 0.39–0.41 (0.40); HW = 0.39–0.41 (0.40); PRW = 0.24–0.26 (0.25); PTW = 0.35–0.39 (0.37); AW = 0.49– 0.58 (0.53).

Female. Abdominal chaetotaxy as in Table 2 and Fig. 513View FIGURES 512 – 513. Subgenital plate ( Fig. 517View FIGURES 514 – 517) trapezoidal, reaching vulval margin but not flaring into cross-piece. Vulval margin ( Fig. 517View FIGURES 514 – 517) widely bulging medianly; 4–5 stout, thornlike vms on each side, and 2–3 minute, slender vss on each side, restricted to median section; 2–3 long, slender vos; 1 long, slender vos median to vms on each side. Measurements ex Coua cristata pyzopyga  (n = 7): TL = 1.63–1.83; HL = 0.41–0.44; HW = 0.43–0.46; PRW = 0.25–0.27; PTW = 0.37–0.42; AW = 0.58–0.68.

Etymology. The species epithet is formed by Greek “ dódeka ” for “twelve” and “ pteron ” for “wing”, referring to the wing-like folded pleurites on abdominal segments III –VIII ( Figs 512–513View FIGURES 512 – 513).

Type material. Ex Coua cristata pyropyga  : Holotype ♂, Betioky, [ Atsimo-Andrefana Region ], Madagascar, 29 Nov. 1965, C.[P.] Blanc, Brit. Mus. 1974-513 ( NHMLAbout NHML)  . Paratypes: 3♂, 4♀, same data as holotype ( NHMLAbout NHML)  ; 6♂, 3♀, “ Madagascar Sud ”, Madagascar , 20 Jun. 1965, C.P. Blanc, Brit  . Mus. 1974-513 ( NHMLAbout NHML)  .

NHML

Natural History Museum, Tripoli