Guimaraesiella (Cicchinella) hannesundinae Gustafsson, Clayton

Gustafsson, Daniel R., Clayton, Dale H. & Bush, Sarah E., 2019, Twelve new species of Guimaraesiella (Phthiraptera: Ischnocera: Philopteridae) from “ babblers ” (Passeriformes: Leiothrichidae, Pellorneidae, Timaliidae) with a description of a new subgenus and a key to its species, Zootaxa 4543 (4), pp. 451-497 : 476-479

Guimaraesiella (Cicchinella) hannesundinae Gustafsson, Clayton & Bush, new species

( Figs 59–66 )

Type host. Heterophasia picaoides wrayi (Ogilvie-Grant, 1910) —long-tailed sibia ( Leiothrichidae ).

Type locality. Mount Brinchang , Malaysia .

Diagnosis. Guimaraesiella (C.) hannesundinae is most similar to Guimaraesiella (C.) hampuslybecki (see below), with which it shares the following characters: (1) antennae sexually dimorphic ( Figs 61–62 , 69–70 ); (2) male with more than 5 mms on each side ( Figs 59 , 67 ); (3) basal apodeme narrowing proximally ( Figs 63 , 71 ); (4) proximal mesosome with sinuous lateral margins ( Figs 64 , 72 ); and (5) marginal thickenings of mesosomal lobes continuous with distal nodi ( Figs 65 , 72 ). However, these two species can be separated by the following characters: (1) female subgenital plate reticulated in G. (C.) hampuslybecki ( Fig. 74 ) but not in G. (C.) hannesundinae ( Fig. 66 ); (2) ss of female tergopleurite VIII long in G. (C.) hannesundinae ( Fig. 60 ) but short in G. (C.) hampuslybecki ( Fig. 68 ); (3) mesosomal ventral sclerite short and blunt in G. (C.) hannesundinae ( Fig. 64 ) but long and slender in G. (C.) hampuslybecki ( Fig. 72 ); (4) marginal thickenings of mesosomal lobes broad and not displaced at concavity in G. (C.) hannesundinae ( Fig. 64 ) but slender and displaced medianly at concavity in G. (C.) hampuslybecki ( Fig. 72 ); (5) ames microsetae in G. (C.) hannesundinae ( Fig. 64 ) but sensilla in G. (C.) hampuslybecki ( Fig. 72 ); and (6) papillate area of parameral heads more extensive in G. (C.) hannesundinae ( Fig. 65 ) than in G. (C.) hampuslybecki ( Fig. 73 ).

Description. Both sexes. Head pentagonal ( Fig. 61 ). Lateral margins of preantennal head straight. Dorsal preantennal suture does not reach lateral margins of head, and does not completely separate dorsal anterior plate from main head plate. Head chaetotaxy as in Fig. 61 ; pns microsetae. Coni long, broad, almost reaching distal margin of scape in female Antennae sexually dimorphic. Gular plate sinuously triangular. Thoracic and abdominal segments as in Figs 59–60 . Reentrant heads of pleurites short and blunt in male, longer in female.

Male. Scape enlarged as in Fig. 61 . Thoracic and abdominal chaetotaxy as in Fig. 59 . Genitalia as in Figs 63– 65 . Basal apodeme broad distally but narrowing proximally ( Fig. 63 ); proximal margin rounded. Proximal mesosome broad ( Fig. 64 ), rectangular, with slightly bulging lateral margins. Ventral sclerite broad, blunt, not approaching proximal margin of mesosome. Mesosomal lobes with strongly sinuous lateral margins. Marginal thickenings of mesosomal lobes broad throughout, not displaced medianly at any point; thickenings continuous with large, irregular distal nodi. Gonopore W-shaped; 2 ames microsetae on each side near antero-lateral corner of mesosomal lobes; gpmes not visible in examined material; 2 lpmes microsetae on each side situated in lateral concavity of mesosome. Parameral heads irregular ( Fig. 65 ), with extensive papillate area. Parameral blades with sinuous median margin, tapering only distally; pst1–2 close together. Measurements (n = 4, except TL where n = 3): TL = 1.14–1.20; HL = 0.31–0.33; HW = 0.31–0.35; PRW = 0.19–0.22; PTW = 0.30–0.35; AW = 0.43–0.47.

Female. Scape as in Fig. 62 . Thoracic and abdominal as in Fig. 60 ; ss of tergopleurite VIII as long as ss of tergopleurites II–VII. Subgenital plate as in Fig. 66 , not reticulated; cross-piece with moderate connection to subgenital plate. Submarginal fold on cross-piece. Vulval margin gently rounded, somewhat flattened medianly ( Fig. 66 ), with 3–5 slender vms on each side, and 9–10 thorn-like vss on each side; at least some vss arranged in double rows; 5–6 slender vos on each side; distal vos situated median to vss. All examined females with a thorn- like seta positioned anterior to cross-piece on at least one side, as in Fig. 66 ; these setae not symmetrical in any examined specimen. Measurements (n = 3): TL = 1.59–1.62; HL = 0.35–0.36; HW = 0.35–0.36; PRW = 0.21–0.22; PTW = 0.34–0.35; AW = 0.55–0.56.

Etymology. The species epithet is in honor of Hanne Sundin (previously at Chalmers Technical University, Gothenburg, Sweden), friend of the first author, who hosted DRG during his collection trips in Sweden.

Type material. Ex Heterophasia picaoides wrayi : Holotype Ƌ, Mount Brinchang, Malaysia, 19 Mar. 1962, M-01087, 24701 on reverse (OSUS). Paratypes: 2♂, 3♀, same data as holotype, 24700–24702 on reverse ( OSUS) ; 1♂, Mount Brinchang , Malaysia, 13 Dec. 1961, M-00625, 24696 on reverse ( OSUS) .

Figures

FIGURES 59–60. Guimaraesiella (Cicchinella) hannesundinae n. sp. 59, male, whole body, dorsal and ventral views. 60, female, whole body, dorsal and ventral views.

FIGURES 61–66. Guimaraesiella (Cicchinella) hannesundinae n. sp. 61, male head, dorsal and ventral views. 62, female antenna, ventral view. 63, male genitalia, dorsal view. 64, male mesosome, ventral view. 65, male paramere, dorsal view. 66, female subgenital plate and vulval margin, ventral view.

FIGURES 69–74. Guimaraesiella (Cicchinella) hampuslybecki n. sp. 69, male head, dorsal and ventral views. 70, female antenna, ventral view. 71, male genitalia, dorsal view. 72, male mesosome, ventral view. 73, male paramere, dorsal view. 74, female subgenital plate and vulval margin, ventral view.

FIGURES 67–68. Guimaraesiella (Cicchinella) hampuslybecki n. sp. 67, male, whole body, dorsal and ventral views. 68, female, whole body, dorsal and ventral views.