Philopteroides haerixos, Gustafsson & Najer & Zou & Bush, 2022

Gustafsson, Daniel R., Najer, Tomas, Zou, Fasheng & Bush, Sarah E., 2022, The ischnoceran chewing lice (Phthiraptera: Ischnocera) of bulbuls (Aves: Passeriformes: Pycnonotidae), with descriptions of 18 new species, European Journal of Taxonomy 800, pp. 1-88 : 69-72

Philopteroides haerixos sp. nov.

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Figs 124–129

Diagnosis

Philopteroides haerixos sp. nov. is most similar to Philopteroides longiclypeatus sp. nov., with which it shares the following characters: abdominal segment III without ps in both sexes ( Figs 118–119 , 124– 125 ); male sternite III with lateral accessory sternal plate present and separate from central sternal plate ( Figs 118 , 124 ); dorsal sclerotization of mesosome broad, roughly triangular ( Figs 121 , 127 ); no median dorsal ridges on distal end of basal apodeme ( Figs 121 , 127 ).

Philopteroides haerixos sp. nov. can be separated from Po. longiclypeatus sp. nov. by the following characters: head coni broad bulky in Po. haerixos sp. nov. ( Fig. 126 ), but slender elongated in Po. longiclypeatus sp. nov. ( Fig. 120 ); sternal plate II absent in both sexes in Po. haerixos sp. nov. ( Figs 124–125 ), but present in Po. longiclypeatus sp. nov. ( Figs 118–119 ); male basal apodeme in all its length more or less equally wide in Po. haerixos sp. nov. ( Figs 127–128 ), but narrowing anteriorly in Po. longiclypeatus sp. nov. ( Figs 121–122 ); gonoporal complex of different structure ( Figs 122 , 128 ); female subgenital plate with elongated, slender postero-lateral extensions in Po. longiclypeatus sp. nov. ( Fig. 123 ), but without such extensions in Po. haerixos sp. nov. ( Fig. 129 ); mesometasternal plate absent or poorly sclerotized in Po. haerixos sp. nov. ( Figs 124–125 ), but clearly visible in Po. longiclypeatus sp. nov. ( Figs 118–119 ).

Etymology

The species name is derived from the Latin ‘ haereo ’, for ‘I attach myself (to)’, and the genus of the type host, Ixos Temminck, 1825

Material examined

Holotype (ex Ixos mcclellandii holtii) CHINA • 1 ♂; Guangxi Province, Jingxin County; 30 Sep. 2004; S.E. Bush leg.; ATP-2004-141; P-395; NHML.

Paratypes CHINA • 1 ♀; same locality and collector as for holotype; 30 Sep. 2004; ATP-2004-49 ; P-137; NHML • 1 ♂, 2 ♀♀; same locality and collector as for holotype; 28 Sep. 2004; ATP-2004-113 , P-325; PIPR • 2 ♀♀; same collection data as for preceding; GC-2004-29 , P-521; PIPR .

Type host

Ixos mcclellandii holtii (Swinhoe, 1861) – mountain bulbul.

Description

Both sexes

Head shape as in Fig. 126 , lateral margins of preantennal head concave, frons deeply concave, with central sclerotization medianly continuous. Dorsal anterior plate with deeply concave anterior margin, convex lateral margins, and moderate posterior extension reaching beyond mandibles. The posterior extension continually outgoing from the rest of the plate, without clear angle or separation. Ventral anterior plate trapezoidal, with deeply concave anterior margin. Lobes of ventral carinae rectangular, bulging slightly posteriorly in median section. Head chaetotaxy as in Fig. 126 . Thoracic and abdominal chaetotaxy as in Figs 124–125 . Base pigmentation yellowish brown, except marginal carina, preantennal nodi, and proepimera slightly darker. Male sternal and subgenital plates brown with slight reddish tint; female sternal and subgenital plates the same yellowish color as tergopleurites.

Male

Thoracic and abdominal chaetotaxy as in Fig. 124 . Metanotum with 6–7 setae on each side. Sternal plate II absent but small, rounded lateral accessory plate present; sternal plate III with lateral accessory plate; sternal plates IV–VI wide, without accessory plates. Subgenital plate large, with small kidney-shaped accessory plate on segment IX+X. Basal apodeme long ( Fig. 127 ), only slightly more narrow proximally than distally. Dorsal thickening of mesosome rounded triangular ( Fig. 127 ). Gonopore deeply crescent shaped ( Fig. 128 ), with rounded anterior margin, distally with blunt, lobe-like median extensions. Parameres simple ( Fig. 127 ); 2 sensilla on lateral margin of basal paramere, and 2 sensilla on lateral margin in distal half of each paramere. Measurements as in Tables 1–2 .

Female Thoracic and abdominal chaetotaxy as in Fig. 125 . Metanotum with 6–7 setae on each side. Sternal plate II absent or very small at base of median-most setae; sternal plates III–VI small with small, often irregularly shaped, lateral accessory plates. Subgenital plate as in Fig. 128 , lateral sections only slightly extended posteriorly. Surface between subgenital plate and vulval margin with some reticulation in postero-median section. Vulval margin more or less straight, with 4–5 long and 3–4 short setae on each side. Subvulval plates large, distal ends pointed and curving slightly medianly. Measurements as in Tables 1–2 .

Figures

Figs 124–125. Philopteroides haerixos sp. nov. 124. Male habitus, dorsal and ventral views.125. Female habitus, dorsal and ventral views.

Figs 126–129. Philopteroides haerixos sp. nov. 126. Male head, dorsal and ventral views. 127. Male genitalia, dorsal view.128. Male genitalia, ventral view. 129. Female subgenital plate and vulval margin, ventral view.

Figs 118–119. Philopteroides longiclypeatus sp. nov. 118. Male habitus, dorsal and ventral views. 119. Female habitus, dorsal and ventral views.

Figs 120–123. Philopteroides longiclypeatus sp. nov. 120. Male head, dorsal and ventral views. 121. Male genitalia, dorsal view. 122. Male genitalia, ventral view. 123. Female subgenital plate and vulval margin, ventral view.