Harpactrox loeiensis Gustafsson & Bush, 2017

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 : 155-158

Harpactrox loeiensis Gustafsson & Bush , new species

( Figs 246–252 )

Type host. Harpactes erythrocephalus annamensis (Robinson & Kloss, 1919) — red-headed trogon. Type locality. Krading Mountain , Srithan, Wang Saphung District, Loei Province, Thailand.

Diagnosis. Harpactrox loeiensis n. sp. most similar to Ha. pontifrons n. sp., with which it shares the following characters: head broader than long in both species ( Figs 248 , 260 ) (approximately as broad as long in Ha. geminodus n. sp., Fig. 255); dorsal preantennal suture does not reach dsms (suture reaches dsms in Ha. geminodus ); mts 3 the same length as mts 1–2 and mts 4–5 ( mts 3 slightly longer than other mts in Ha. geminodus n. sp). However, Ha. loeiensis ( Fig. 248 ) lacks the dorsal ridge at the osculum found in Ha. pontifrons ( Fig. 260 ). Harpactrox pontifrons has 2 vms, 3 vss, and 7–8 vos ( Fig. 262 ), whereas Ha. loeiensis ( Fig. 252 ) has 4 vms, 5–6 vss, and 5–8 vos. The ventral anterior plate of Ha. loeiensis ( Fig. 248 ) is smaller than that of the other two species (Figs 255, 260). Males of Ha. loeiensis ( Figs 249–251 ) are separated from those of Ha. geminodus by the shape of the male genitalia(Figs 256–258), but males of Ha. pontifrons are unknown. In Ha. loeiensis the proximal mesosome is slender ( Fig. 250 ), with a narrowly rounded anterior margin, whereas in Ha. geminodus it is broad (Fig. 257), with a largely flat anterior margin. In addition, the gonopore is extended distally in Ha. loeiensis ( Fig. 250 ), but not in Ha. geminodus (Fig. 257).

Description. Both sexes. Head shape, structure, and chaetotaxy as in Fig. 248 . Ventral anterior plate slightly longer than marginal carina. Ventral carinae diffuse anterior to pulvinus. Dorsal preantennal suture encompasses ads, and bends anteriorly at ads, but does not reach dsms. Preantennal nodi large. All mts of roughly equal length. Gular plate indistinct, but anterior end pointed. Thoracic and abdominal segments as in genus description and Figs 246–247 . Pleurites broad anteriorly and irregular in male, more slender and regular in female.

Male. Subgenital plate trapezoidal ( Fig. 246 ). Abdominal chaetotaxy as in Table 2 and Fig. 246 . Basal apodeme ( Fig. 249 ) roughly as wide distally as proximally. Proximal mesosome ( Fig. 250 ) slender, elongated, anterior margin rounded, narrow. Gonopore narrowly open distally, elongated. Mesosomal lobes slight, rounded; 3 ames microsetae submedianly on each side anterior to gonopore; 2 pmes microsetae on each side lateral to gonopore. Parameral heads ( Fig. 251 ) rounded. Parameral blades blunt, slender; pst1–2 as in genus description. Measurements ex Harpactes erythrocephalus annamensis (n = 12 except n = 10 for TL): TL = 1.77–2.06 (1.85); HL = 0.41–0.45 (0.43); HW = 0.52–0.55 (0.53); PRW = 0.28–0.32 (0.30); PTW = 0.45–0.48 (0.46); AW = 0.51– 0.72 (0.59).

Female. Abdominal chaetotaxy as in Table 2 and Fig. 247 . Subgenital plate broadly trapezoidal ( Fig. 252 ), reaching vulval margin. Vulval margin ( Fig. 252 ) gently rounded, with 4 short, slender vms on each side, and 5–6 short, thorn-like vss on each side; 5–8 vos on each side; distal 3 vos median to vss. Measurements ex Harpactes erythrocephalus annamensis (n = 15 except n = 14 for TL and PTW and n = 13 for AW): TL = 1.91–2.37 (2.09); HL = 0.46–0.51 (0.48); HW = 0.59–0.64 (0.60); PRW = 0.32–0.37 (0.34); PTW = 0.51–0.55 (0.52); AW = 0.60– 0.76 (0.68).

Remarks. We have specimens examined from the host subspecies H. e. erythrocephalus (Gould, 1834) collected in Myanmar which do not belong to Harpactrox geminodus , but are more similar in head shape to Ha. loeiensis They differ from Ha. loeiensis in the shape of the male genitalia and the extent of the dorsal preantennal suture. We presently cannot assess whether this material is conspecific with Ha. loeiensis or not, and leave this material undescribed.

Etymology. The species epithet is derived from the type locality, Loei Province in Thailand.

Type material. Ex Harpactes erythrocephalus annamensis : Holotype ♂, Krading Mountain , Srithan, Wang Saphung District, Loei Province, Thailand, 1, Jan. 1954, R.E. Elbel & B. LeKagul, RE-3252, B-22640 ( OSUS) . Paratypes: 1♀ same data as holotype ( OSUS) ; 2♀, same data as holotype (PIPeR).

Figures

FIGURES 246 – 247. Harpactrox loeiensis n. gen. & n. sp. ex Harpactes erythrocephalus annamensis: 246, male habitus, dorsal and ventral views; only examined male with distorted abdomen, and shape of abdomen here reproduced as closely as possible; anterior sternites and some ventral setae missing in only available male specimen, and here included tentatively. 247, female habitus, dorsal and ventral views.

FIGURES 248 – 252. Harpactrox loeiensis n. gen. & n. sp. ex Harpactes erythrocephalus annamensis: 248, male head, dorsal and ventral views. 249, male genitalia, dorsal view. 250, male mesosome, ventral view. 251, male paramere, dorsal view. 252, female subgenital plate and vulval margin, ventral view.

FIGURES 260 – 262. Harpactrox pontifrons n. gen. & n. sp. ex Harpactes ardens ardens: 260, female head, dorsal and ventral views. 261, female habitus, dorsal and ventral views. 262, female subgenital plate and vulval margin, ventral view.