Goniocotes rolandi, Gustafsson & Tian & Zou, 2021

Gustafsson, Daniel R., Tian, Chunpo & Zou, Fasheng, 2021, New species of ischnoceran chewing lice (Phthiraptera: Philopteridae) from Chinese birds, Zootaxa 4990 (2), pp. 305-328 : 310-317

Goniocotes rolandi new species

( Figs 10–11 , 13–15 )

Type host: Crossoptilon harmani Elwes, 1881 —Tibetan eared pheasant ( Phasianidae ).

Type locality: Southeast Tibet, China .

Diagnosis. Goniocotes rolandi new species is most similar to Goniocotes crossoptiloni Liu, 1990 . These two species can be separated by the following characters: male tergopleurites V–VI with 1 tps on each side and tergopleurite VII without tps in G. crossoptiloni , but tergopleurite V with 2–4 tps on each side, tergopleurite VI with 1–2 tps on each side, and tergopleurite VII with 1–2 tps on each side in G. rolandi ( Fig. 10 ); male sternite IV–V with 2 sts on each side in G. crossoptiloni , but with 3–4 sts on each side in G. rolandi ( Fig. 10 ); head of G. rolandi ( Figs 10–11 ) proportionately wider and with flatter frons, especially in female, than head of G. crossoptiloni ; vulval margins more or less gently rounded in G. crossoptiloni , but with pronounced median bulge in G. rolandi ( Fig. 13 ); male genitalia not illustrated in sufficient detail for G. crossoptiloni , but appear to have shorter parameres and broader mesosome than those of G. rolandi ( Figs 14–15 ).

Description. Both sexes. Head shape as in Fig. 10 ; temples flaring with definite postero-lateral corner at aperture of mts1. Marginal carina of moderate width, widening anteriorly (more obvious in male). Head chaetotaxy as in Figs 10–11 ; os sexually dimorphic; s1–2 and s5–9 present, as well as one sensillum situated roughly on a line between pts and pns, which may be either of s3–4. Thoracic and abdominal segments as in Figs 10–11 . Reticulation covers almost all of tergal and subgenital plates, but is less distinct elsewhere. For clarity, we have here illustrated only parts of this reticulation in grey, to indicate the relative size of the cells in the pattern. Measurements as in Table 1 .

Male. Ocular seta macroseta ( Fig. 10 ). Thoracic and abdominal chaetotaxy as in Fig. 10 ; median section of pteronotum with one macroseta and one microseta on each side; tergopleurites II–IV with setal rows; tergopleurite V with 2–4 tps on each side; tergopleurite VI with 1–2 tps on each side (one specimen with no tps on one side); tergopleurite VII with one tps on each side. Basal apodeme long and slender ( Figs 14–15 ). Mesosome present, roughly triangular dorsally ( Fig. 14 ), but ventrally with distinct hook-shaped lateral extensions at about mid-length. One small sensillum on each side near the dorsal anterior margin; no other sensilla or setae visible. Postero-lateral corners of basal apodeme with rugose nodi; parameres slender and somewhat elongated.

Female. Ocular seta microseta ( Fig. 11 ). Thoracic and abdominal segments and chaetotaxy as in Fig. 11 . Vulval margin with distinct median bulge and lateral sections deeply concave ( Fig. 13 ). Vulval chaetotaxy: 41–48 long, slender vms (often in double rows at least laterally) and 2–3 large, thorn-like vss on each side; oblique set with 5–8 vos of varying length on each side, typically with distal setae longer than more proximal setae.

Etymology: The specific epithet is in honour of the first author’s father, Roland Gustafsson, who spent many weekends taking him outdoors to watch birds, to camp, to enjoy nature, and introducing him to his first bird-ringing event outside Jönköping, Sweden, in the early 1990s. This laid the foundations of a solid interest in nature for the first author, who eventually devoted his life to biological research.

Type material. Ex Crossoptilon harmani : Holotype ♂, S.E. Tibet [ China], May 1912, R . Meinertzhagen, ID 3759, NHMUK010675935 [right-most male on slide, marked with black dot] ( NHMUK). Paratypes. 3♂, 6♀, same data as holotype, NHMUK010675934–5 ( NHMUK) .

Figures

FIGURE 10. Goniocotes rolandi new species. Male habitus, dorsal and ventral views. Abbreviations: os = ocular seta; pns = postnodal seta; pts = posttemporal seta; s1–9 = sensilla 1–9; sts = sternal seta; tps = tergal posterior seta.

FIGURE 11. Goniocotes rolandi new species. Female habitus, dorsal and ventral views. Abbreviation: os = ocular seta.

FIGURES 12–13. Female subgenital plate and ventral terminalia. 12, Goniocotes kristinae new species. 13, Goniocotes rolandi new species. Abbreviations: vms = vulval marginal seta; vos = vulval oblique seta; vss = vulval submarginal seta.

FIGURES 14–15. Male genitalia of Goniocotes rolandi new species. 14, dorsal view. 15, ventral view.