Manucodicola acantharx 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: 270-274

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-FE87-FED2-FF74-64ECFD98FC23

treatment provided by

Plazi

scientific name

Manucodicola acantharx Gustafsson & Bush
status

new species

Manucodicola acantharx Gustafsson & Bush  , new species

( Figs 451–456View FIGURES 451 – 452View FIGURES 453 – 456)

Type host. Manucodia ater (Lesson, 1830)  —glossy-mantled manucode.

Type locality. Oriomo River , elev. 20 ft, Western District, Papua New Guinea. 

Diagnosis. Manucodicola acantharx  n. sp. is very similar to Mn. semiramisae  n. sp., and females are best separated by vulval chaetotaxy ( Figs 456View FIGURES 453 – 456, 462View FIGURES 459 – 462), especially the vss where there appears to be no overlap in the number of setae in the material examined (9–12 in Mn. semiramisae  and 13–17 in Mn. acantharx  ). The female subgenital plate is wider distally in Mn. acantharx  ( Fig. 456View FIGURES 453 – 456) than in Mn. semiramisae  ( Fig. 462View FIGURES 459 – 462). Sternal plate IV present in both sexes of Mn. acantharx  ( Figs 451–452View FIGURES 451 – 452), but absent in both sexes of Mn. semiramisae  (Figs 457– 458). Male genitalia hard to assess, as all examined males have partially everted genitalia. From what can be seen, males of the two species may be separated by the following characters: proximal mesosome short in Mn. acantharx  ( Fig. 455View FIGURES 453 – 456) but long in Mn. semiramisae  ( Fig. 461View FIGURES 459 – 462); mesosome square-shaped in Mn. acantharx  ( Fig. 455View FIGURES 453 – 456) but more oval in Mn. semiramisae  ( Fig. 461View FIGURES 459 – 462); gonopore open distally in Mn. semiramisae  ( Fig. 461View FIGURES 459 – 462) but closed distally in Mn. acantharx  ( Fig. 455View FIGURES 453 – 456); mesosomal lobes with fused, shallowly V-shaped thickening distal to gonopore in Mn. acantharx  ( Fig. 455View FIGURES 453 – 456) but without such thickening in Mn. semiramisae  ( Fig. 461View FIGURES 459 – 462).

Description. Both sexes. Head shape, structure, and chaetotaxy as in genus description and Fig. 453View FIGURES 453 – 456. Head pigmentation generally darker than in Manicodicola semiramisae  . Thoracic and abdominal segments as in genus description and Figs 451–452View FIGURES 451 – 452. Sternal plate IV present in both sexes.

Male. Abdominal chaetotaxy as in Table 2 and Fig. 451View FIGURES 451 – 452. Male genitalia partially everted in all specimens examined, and illustrated and described only tentatively ( Fig. 455View FIGURES 453 – 456). Basal apodeme broadly trapezoidal. Proximal mesosome short, broad; anterior margin flat. Gonopore heart-shaped, closed distally. Mesosomal lobes fused distally, broad, quadratic, with large postero-lateral extensions; 2 sensilla on each side visible near anterior margin of lobes. Parameres distorted in all material examined. Measurements ex Manucodia ater  (n = 16 except n = 15 for TL and AW): TL = 1.41–1.62 (1.50); HL = 0.46–0.51 (0.48); HW = 0.43–0.47 (0.45); PRW = 0.29–0.32 (0.30); PTW = 0.38–0.42 (0.40); AW = 0.48–0.62 (0.55).

Female. Abdominal chaetotaxy as in Table 2 and Fig. 452View FIGURES 451 – 452. Subgenital plate rounded triangular ( Fig. 456View FIGURES 453 – 456), narrowing markedly near vulval margin. Vulval margin bulging, with 4–5 long, slender vms on each side, and 13– 17 stout, thorn-like vss on each side ( Fig. 456View FIGURES 453 – 456); most vss arranged in two rows; 7–8 long, slender vos on each side; distal 1–2 vos median to vss. Measurements ex Manucodia ater  (n = 12): TL = 1.53–1.88 (1.70); HL = 0.49–0.54 (0.51); HW = 0.45–0.52 (0.48); PRW = 0.29–0.34 (0.32); PTW = 0.40–0.46 (0.43); AW = 0.48–0.67 (0.59).

Etymology. The species epithet is formed by Greek “ ake ” for “thorn”, “ anthus ” for “flower” and Latin “ arx ” for “citadel” or “fortress”, referring to the many thorny setae “guarding” the vulval margin ( Fig. 456View FIGURES 453 – 456).

Type material. Ex Manucodia ater  : Holotype ♂, Oriomo River, elev  . 20 ft, Western District, Papua New Guinea, 22 Feb. 1964, H. Clissold, BBM-NG-29646 ( BPBM) [marked by black dot on slide]. Paratypes: 5♂, 4♀, same data as holotype ( BPBM)  ; 2♀, Oriomo River, elev  . 20 ft, Western District, Papua New Guinea, 25 Feb. 1964, H. Clissold, BBM-NG-50018 ( BPBM)  .