Pelecolipeurus fujianensis, Gustafsson & Tian & Ren & Li & Sun & Zou, 2024

Gustafsson, Daniel R., Tian, Chunpo, Ren, Mengjiao, Li, Zhu, Sun, Xiuling & Zou, Fasheng, 2024, New genus and species of lice in the Oxylipeurus - complex (Phthiraptera, Ischnocera, Philopteridae), with an overview of the distribution of ischnoceran chewing lice on galliform hosts, Deutsche Entomologische Zeitschrift 71 (1), pp. 85-109 : 85

Pelecolipeurus fujianensis sp. nov.

Figs 1 , 3-6 , 7, 8 , 9-14

Type host.

Tragopan caboti (Gould, 1857) - Cabot’s tragopan.

Type locality.

Fujian Province, China.

Specimens examined.

Type material. Ex Tragopan caboti : China • Holotype ♂; Fujian Province; 29 Sep 1990; collector unknown; box E0026199, slide 65 (NNHM) [Male in lower right corner, near where cover glass is broken, marked with black dot on slide]. Paratypes 7♂, 9♀, 8 nymphs; Fujian Province; 29 Sep 1990; collector unknown; box E0026199, slides 64-66, 95 (NNHM). 1♂, 3♀; Fujian Province; 16 Dec 1988; collector unknown; box E0026199, slide 68 (NNHM). 1♀, 3 nymphs; Fujian Province, Jianou; 7 Jan 1997; collector unknown; box E0026195, slide 3 (NNHM). 1♂, 2♀, 6 nymphs; Fujian Province, Wuyi Mountain ; Dec. 1989; collector unknown; box E0026011, slide 15, box E0026198, slide 74 (NNHM). 11♂, 15♀, 11 nymphs; Zhejiang Province; 8 Dec 1980; collector unknown; box E0026010, slide 76, box E0026199, slides 88-92 (NNHM) .

Diagnosis.

Due to the limited illustrations published for Pelecolipeurus longus from the type host (see above), we here compare P. fujianensis sp. nov. with the specimens tentatively identified as P. longus from T. temminckii , which we consider conspecific with the species illustrated by Clay (1938a) and von Kéler (1958). A re-description of P. longus from the type host is necessary to determine additional characters separating this species from P. fujianensis .

Pelecolipeurus fujianensis can be separated from P. longus as illustrated by Clay (1938a) and von Kéler (1958) by the following characters: male fused abdominal segment IX-XI with more or less straight lateral margins in P. longus , but with concave lateral margins in P. fujianensis (Fig. 7 ); proximal mesosome of P. longus with flattened anterior margin, but with medianly pointed anterior end in P. fujianensis (Fig. 6 ); parameres more curved in P. longus than in P. fujianensis (Fig. 6 ).

In addition, P. fujianensis can be separated from the population from T. temminckii described above by the following characters: frons more flattened in P. longus s. lat. (Fig. 17 ) than in P. fujianensis (Fig. 3 ); male sternal plate VI with 2 sts of more or less equal length in P. longus s. lat. (Fig. 15 ), but with lateral seta on each side much shorter than median seta on each side in P. fujianensis (Fig. 1 ); female sternal plate VI with 1 sts on each side and sternal plate VII with 3 medium-length setae and up to 2 microsetae on each side in P. fujianensis (Fig. 2 ), but sternal plate VI with 2 sts on each side and sternal plate VII without microsetae in P. longus s. lat. (Fig. 16 ); male subgenital plates of different shape (cf. Figs 7 , 21 ) and stylus evenly tapering distally in P. longus s. lat. (Fig. 21 ), but with convex lateral margins in distal half in P. fujianensis (Fig. 7 ); female subgenital plate medianly continuous in P. longus s. lat. (Fig. 22 ), but medianly interrupted in P. fujianensis (Fig. 8 ); proximal mesosome with flattened to slightly concave anterior margin in P. longus s. lat. (Fig. 20 ), but with pointed anterior margin in P. fujianensis (Fig. 6 ); ventral sclerite of mesosome and shape of gonopore and distal mesosome also differ between species (cf. Figs 6 , 20 ). Male antennal characters may be more similar in these two species than illustrated here (Figs 3 , 17 ), as their shape is affected by mounting. However, scape appears to be broader and the distal process of flagellomere I appears to be longer in P. fujianensis (Fig. 3 ) than in P. longus s. lat. (Fig. 17 ).

Description.

Both sexes. Head shape and structure as in Fig. 3 ; frons gently rounded. No prominent reticulation on head. Marginal carina of moderate width, not widening posteriorly. Dorsal pre-antennal suture prominent, not reaching marginal carina laterally. Head chaetotaxy as in Fig. 3 ; most dorsal sensilla visible as microsetae in most examined specimens. Antennae sexually dimorphic. Thoracic and abdominal segments and chaetotaxy as in Figs 1 , 2 .

Male. Antennae as in Fig. 3 ; scape, pedicel and flagellomere I swollen and modified in shape compared to female; scape with slight process in proximal third; flagellomere I with prominent distal projection and restricted rugose area, which does not extend to proximal bulbous process of segment. Abdominal chaetotaxy as in Fig. 9 ; inner ventral ps present on segments V-VIII; median sts on sternite VI much longer than lateral sts. Subgenital plate, stylus and terminalia as in Fig. 7 ; stylus broadening in distal half, not tapering evenly. Genitalia as in Figs 5 , 6 . Proximal mesosome with narrow median point, widening distally. Ventral sclerite small, roughly rounded-rectangular, with minute postero-lateral extensions; 1 sensillum on each side associated with sclerite; 3 sensilla on each side lateral to ventral sclerite, forming distally divergent rows. Distal mesosome oval, dominated by large oval gonopore. Parameres curved slightly medianly, with median and lateral fingers of parameral head roughly equal in size. Measurements as in Table 1 .

Female. Antennae as in Fig. 4 . Abdominal chaetotaxy as in Fig. 2 ; sternal plate VI with 1 sts on each side. Subgenital plate, vulval margin and terminalia as in Fig. 8 ; subgenital plate divided medianly. Vulval margin with 17-23 medium-length, slender vms and 6-10 short, slender vss on each side; median vms shorter than lateral vms. Measurements as in Table 1 .

Etymology.

The specific name is derived from the type locality.

Figures

Figure 1. Pelecolipeurus fujianensis sp. nov. ex Tragopan caboti (Gould, 1857). Male habitus, dorsal and ventral views.

Figure 2. Pelecolipeurus fujianensis sp. nov. ex Tragopan caboti (Gould, 1857). Female habitus, dorsal and ventral views.

Figure 15. Pelecolipeurus cf. longus (Piaget, 1880) ex Tragopan temminckii (Gray, 1831). Male habitus, dorsal and ventral views.

Figure 16. Pelecolipeurus cf. longus (Piaget, 1880) ex Tragopan temminckii (Gray, 1831). female habitus, dorsal and ventral views.

Figures 3 - 6. Pelecolipeurus fujianensis sp. nov. ex Tragopan caboti (Gould, 1857). 3. Male head, dorsal and ventral views; 4. Female antenna, ventral view; 5. Male genitalia, ventral view; 6. Distal male genitalia, ventral view.

Figures 7, 8. Pelecolipeurus fujianensis sp. nov. ex Tragopan caboti (Gould, 1857). 7. Male subgenital plate and abdominal segments VIII-XI, ventral view; 8. Female subgenital plate and abdominal segments VIII-XI, ventral view.

Figures 9 - 14. Pelecolipeurus fujianensis sp. nov. ex Tragopan caboti (Gould, 1857). 9. Male leg I, dorsal side; 10. Male leg I, ventral side; 11. Male leg II, dorsal side; 12. Male leg II, ventral side; 13. Male leg III, dorsal side; 14. Male leg III, ventral side.

Figures 17 - 20. Pelecolipeurus cf. longus (Piaget, 1880) ex Tragopan temminckii (Gray, 1831). 17. Male head, dorsal and ventral views; 18. Female antenna, ventral view; 19. Male genitalia, ventral view; 20. Distal male genitalia, ventral view.

Figures 21, 22. Pelecolipeurus cf. longus (Piaget, 1880) ex Tragopan temminckii (Gray, 1831). 21. Male subgenital plate and abdominal segments VIII-XI, ventral view; 22. Female subgenital plate and abdominal segments VIII-XI, ventral view.