Priceiella (Camurnirmus) najeri Gustafsson, Clayton

Gustafsson, Daniel R., Clayton, Dale H. & Bush, Sarah E., 2018, Twelve new species of Priceiella (Phthiraptera: Ischnocera: Philopteridae) from Old World babblers, with keys to species of two subgenera and checklists of species for the genus, Zootaxa 4382 (3), pp. 401-449 : 433-437

Priceiella (Camurnirmus) najeri Gustafsson, Clayton , & Bush, new species

( Figs 71–77 )

Type host. Garrulax monileger stuarti Meyer de Schauensee, 1955 —lesser necklaced laughingthrush ( Leiothrichidae ).

Type locality. Chiang Mai Province, Thailand.

Other hosts. Garrulax monileger fuscatus Baker, 1918 —lesser necklaced laughingthrush ( Leiothrichidae ). Garrulax monileger schauenseei Delacour & Greenway, 1939 —lesser necklaced laughingthrush ( Leiothrichidae ). Alcippe poioicephala haringtoniae Hartert, 1909—brown-cheeked fulvetta ( Leiothrichidae ). Ianthocincla chinensis lochmia Deignan, 1941 —black-throated laughingthrush ( Leiothrichidae ).

Diagnosis. Morphological features [large mesosome overlapping basal apodeme; no aps on tergopleurites III; no lateral accessory plates at male subgenital plate; see Gustafsson & Bush (2017)] align Priceiella (Camurnirmus) najeri n. sp. with the subgenus Camurnirmus Gustafsson & Bush, 2017, but it is not particularly similar to any of the other known species in this subgenus. The most similar species are P. (C.) hwameicola Gustafsson & Bush, 2017 , P. (C.) lindquistae n. sp., P. (C.) nipalensis ( Ansari, 1956) , P. (C.) paulbrowni Gustafsson & Bush, 2017 and P. (C.) sonorae n. sp., with which it shares the following characters: marginal thickening of mesosomal lobes displaced at about mid-length; mesosomal lobes convergent to distal point. However, P. (C.) najeri can be separated from all these species by the following characters: gonopore not extended laterally or proximally in P. (C.) najeri ( Fig. 75 ), but extended in the other species (e.g. Figs 61 , 68 ); rugose nodi present in P. (C.) najeri ( Fig. 75 ), but absent in all other Camurnirmus (e.g. Figs 61 , 68 ), except P. (C.) bohsae ( Fig. 82 ); 2 pmes sensilla laterally on each side of gonopore in P. (C.) najeri ( Fig 75 ), but at most 1 pmes on each side in all other Camurnirmus (e.g. Figs 61 , 68 ), except P. (C.) bohsae n. sp. ( Fig. 82 ).

Priceiella (C.) najeri can be separated from P. (C.) bohsae by the following characters: tps present on female tergopleurite VIII in P. (C.) najeri ( Fig. 72 ), but absent in P. (C.) bohsae ( Fig. 79 ); male tergopleurite IV with 2 ps on each side in P. (C.) najeri (Fig, 71), but 3 ps on each side in P. (C.) bohsae ( Fig. 78 ); proximal mesosome longer than wide, with rounded anterior margin and slightly constricted posterior end in P. (C.) najeri ( Fig. 75 ), but wider than long, with flattened anterior margin and no constriction in P. (C.) bohsae ( Fig. 82 ).

Description. Both sexes. Head pentagonal ( Fig. 73 ). Frons shallowly concave. Lateral margins of preantennal head slightly convex. Head chaetotaxy as in Fig. 73 . Coni about half as long as scape. Antennae sexually dimorphic. Pigmentation patterns slightly variable between material from different host species; base pigmentation near translucent, faintly brown; marginal carina, head nodi and pleural incrassations dark to medium brown, with reddish (material from Garrulax and Ianthocincla spp.) or yellowish (material from Alcippe) tint; margins of antennal socket, gular plate, flagellomeres, proepimera and metepisterna medium to pale brown; sternal plate IV– VI and subgenital plates pale brown (material from Garrulax and Ianthocincla spp.) to yellowish (material from Alcippe).

Male. Scape as in Fig. 73 . Pteronotum with 5–8 mms on each side ( Fig. 71 ), in most specimens differing between sides. Abdominal plates and chaetotaxy as in Fig. 71 . Male genitalia as in Figs 74–76 . Basal apodeme broad, slightly constricted at mid-length ( Fig. 74 ). Proximal mesosome rounded, constricted distally ( Fig. 75 ). Mesosomal lobes wide, with clearly defined lateral sinuous thickening. Thickening along distal margin of mesosome narrow, of even thickness. Gonopore simple, without lateral or proximal extensions. One triangular fold on each side just proximal to gonopore; 2 ames sensilla on each side near antero-lateral corner of mesosomal lobes; 2 pmes sensilla on each side near gonopore; no pmes on lateral margins of mesosome, but these may be overlooked due to being sensilla. Parameral heads large, with median bulge and slightly serrated posterior margin ( Fig. 76 ). Parameral blades long, divergent; pts1–2 close together. Measurements ex Garrulax monileger stuarti (n = 6): TL = 1.37–1.43; HL = 0.35–0.37; HW = 0.35–0.38; PRW = 0.22–0.24; PTW = 0.33–0.36; AW = 0.51–0.57. Measurements ex Garrulax monileger fuscatus (n = 2): TL = 1.48–1.50; HL = 0.38; HW = 0.37–0.39; PRW = 0.23–0.24; PTW = 0.37; AW = 0.55–0.59. Measurements ex Garrulax monileger schauenseei (n = 1): TL = 1.44; HL = 0.38; HW = 0.36; PRW = 0.23; PTW = 0.36; AW = 0.54. Measurements ex Alcippe poioicephala harrintoniae (n = 4): TL = 1.35–1.44; HL = 0.35–0.37; HW = 0.35–0.38; PRW = 0.22–0.23; PTW = 0.33–0.36; AW = 0.52–0.59. Measurements ex Ianthocincla chinensis lochmia (n = 4): TL = 1.40–1.50; HL = 0.36–0.39; HW = 0.36–0.39; PRW = 0.23–0.24; PTW = 0.37–0.39; AW = 0.55–0.60.

Female. Scape as in Fig. 72 . Pteronotum with 5 mms on each side ( Fig. 72 ) (2 females with 6 on 1 side). Abdominal plates and chaetotaxy as in Fig. 72 . Vulval margin gently rounded ( Fig. 77 ), typically with 4–5 slender vms and 6–8 (but specimens from host subspecies G. m. fuscatus with 9) thorn-like vss on each side; 4–6 short, slender vos on each side; distal vos situated near vss. Measurements ex Garrulax monileger stuarti (n = 8): TL = 1.48–1.82; HL = 0.37–0.41; HW = 0.37–0.43; PRW = 0.22–0.26; PTW = 0.34–0.40; AW = 0.52–0.66. Measurements ex Garrulax monileger fuscatus (n = 1): TL = 1.79; HL = 0.42; HW = 0.43; PRW = 0.25; PTW = 0.39; AW = 0.57. Measurements ex Garrulax monileger schauenseei (n = 4, except TL where n = 2 and AW where n = 3): TL = 1.69–1.76; HL = 0.38–0.41; HW = 0.40–0.42; PRW = 0.24–0.26; PTW = 0.36–0.40; AW = 0.59–0.62. Measurements ex Alcippe poioicephala harrintoniae (n = 4): TL = 1.75–1.84; HL = 0.38–0.41; HW = 0.42–0.43; PRW = 0.24–0.27; PTW = 0.38–0.40; AW = 0.59–0.64. Measurements ex Ianthocincla chinensis lochmia (n = 10): TL = 1.69–1.89 (1.78); HL = 0.38–0.41 (0.40); HW = 0.39–0.42 (0.41); PRW = 0.23–0.25 (0.24); PTW = 0.37– 0.40 (0.39); AW = 0.53–0.65 (0.60).

Etymology. The species epithet is in honor of Tomáš Najer (University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic), in recognition of his work with chewing lice of Vietnamese birds.

Type material. Ex Garrulax monileger stuarti : Holotype Ƌ, Chiang Mai Province, Thailand, 21 Oct. 1972, GMP-729, 2 4736 on reverse ( OSUS) . Paratypes: 5♂, 6♀, same data as holotype, 24735–24740 on reverse ( OSUS) ; 1♂, 1♀, Ban Tham , Chiang Mai Province, Thailand, 19 Oct, 1972, GMP-692, 24741 on reverse ( OSUS) .

Additional material examined (non-types)

Ex Alcippe poioicephala haringtoniae: 4♂, 4♀, Ban Tham, Chiang Mai Province, Thailand, 20 Oct. 1972, GMP-704, 25 720 and 24722–24724 on reverse ( OSUS).

Ex Garrulax monileger fuscatus : 1♂, 1♀, Bangkok, Thailand, 26 Nov. 1966, 7E-0084, 24742 on reverse ( OSUS) ; 1♂, Bangkok, Thailand, 26 Nov. 1966, 7E-0082, 24743 on reverse ( OSUS) .

Ex Garrulax monileger schauenseei : 1♂, 1♀, Ban Muang Khai , Tha Li, Loei Province, Thailand, 18 Jan.

1955, R.E. Elbel, RE-4513, B-31123 (PIPeR); 1♀, Ban Na Muang , Na Haeo, Dan Sai District, Loei Province, Thailand, 31 Oct. 1954, R.E. Elbel, RE-4238, B-31016 (PIPeR) ; 1♀, Hin Laem , Tha Khanun, Kanchanaburi Province, Thailand, 29 Oct. 1952, R.E. Elbel & H.G. Deignan, RE-1328, RT-B-15811 (PIPeR) ; 1♀, Hin Laem , Tha Khanun, Kanchanaburi Province, Thailand, R.E. Elbel & H.G. Deignan, RE-1408, RT-B-15839 (PIPeR).

Ex Ianthocincla chinensis lochmia : 1♂, 1♀, Chiang Saen Kai , Chiang Rai Province, Thailand, R.E. Elbel & H.G. Deignan, RE-2318, RT-B-17821, 24746 on reverse ( OSUS) ; 1♂, 2♀, Phu Lom Lo Mountain , Kok Sathon, Dan Sai District, Loei Province, Thailand, 20 Feb. 1955, R.E. Elbel, RE-4728, 24744–24745 on reverse ( OSUS) ; 1♂, 4♀, Phu Lom Lo Mountains , Kok Sathon, Dan Sai District, Loei Province, Thailand, 20 Feb. 1955, R.E. Elbel, RE-4728 (PIPeR) ; 1♂, 4♀, Chiang Saen Kai , Chiang Rai Province, Thailand, 23 Feb. 1953, R.E. Elbel & H.G. Deignan, RE-2318, RT-B-17821 (PIPeR).

Remarks. Females from Ianthocincla chinensis lochmia tend to have fewer vms (2–4, versus 4–5 in material from other hosts) and males tend to have more mms (7–8, versus 5–7 in material from other hosts); however, both character sets overlap. Males from I. ch. lochmia also tend to have shorter mesosomes than males from other hosts, with proximal mesosomes broader distally (narrowing distally in material from type host) and narrower marginal thickening. We do not consider any of these characters sufficient to separate the material from I. ch. lochmia from the material from the other hosts, and consider P. (C.) najeri to be a widely distributed and somewhat variable species.

Figures

FIGURES71–72. Priceiella (Camurnirmus) najeri n. sp. ex Garrulax monileger stuarti Meyer de Schauensee,1955.71, male habitus, dorsal and ventral views. 72, female habitus, dorsal and ventral views.

FIGURES 73–77. Priceiella (Camurnirmus) najeri n. sp. ex Garrulax monileger stuarti Meyer de Schauensee, 1955. 73, male head, dorsal and ventral views. 74, male genitalia, dorsal view. 75, male mesosome, ventral view. 76, male paramere, dorsal view.77, female subgenital plate and vulval margin, ventral view.

FIGURES 59–63. Priceiella (Camurnirmus) lindquistae n. sp. ex Ianthocincla chinensis chinensis (Scopoli 1786). 59, male head, dorsal and ventral views. 60, male genitalia, dorsal view. 61, male mesosome, ventral view. 62, male paramere, dorsal view.63, female subgenital plate and vulval margin, ventral view.

FIGURES 66–70. Priceiella (Camurnirmus) sonorae n. sp. ex Garrulax maesi maesi (Oustalet, 1890). 66, male head, dorsal and ventral views. 67, male genitalia, dorsal view. 68, male mesosome, ventral view. 69, male paramere, dorsal view. 70, female subgenital plate and vulval margin, ventral view.

FIGURES 80–84. Priceiella (Camurnirmus) bohsae n. sp. ex Garrulax strepitans Blyth, 1855. 80, male head, dorsal and ventral views. 81, male genitalia, dorsal view. 82, male mesosome, ventral view. 83, male paramere, dorsal view. 84, female subgenital plate and vulval margin, ventral view.

FIGURES 78–79. Priceiella (Camurnirmus) bohsae n. sp. ex Garrulax strepitans Blyth, 1855. 78, male habitus, dorsal and ventral views.79, female habitus, dorsal and ventral views.