Laimoloima ruiliensis, Gustafsson & Adam & Zou, 2022

Gustafsson, Daniel R., Adam, Costică & Zou, Fasheng, 2022, One new genus and three new species of the Penenirmus-complex (Phthiraptera Ischnocera) from China, with resurrection of Picophilopterus Ansari, 1947, Zootaxa 5087 (3), pp. 401-426 : 414

Laimoloima ruiliensis new species

( Figs 12–13 , 15 , 18–19, 21 )

Type host. Psilopogon asiaticus asiaticus (Latham, 1790) —blue-throated barbet ( Megalaimidae ).

Type locality. Wudiancun , Ruili County, Yunnan Province, China .

Diagnosis. Laimoloima ruiliensis can be separated from L. zeylanica and L. tandani by having a proportionately shorter preantennal area ( Fig. 15 ) and from L. rafflesi by the position of mts1 near mts2 rather than near posterior margin of eye. The shape of the male endomere suggests that L. ruiliensis is closer to L. zeylanica than to L. tandani .

Furthermore, Laimoloima ruiliensis can be separated from L. zeylanica by the following characters: dorsal anterior plate with rounded posterior margin in L. zeylanica , but with tapering posterior margin in L. ruiliensis ( Fig. 15 ); male tergopleurites III–IV with two tergocentral setae on each side in L. ruiliensis ( Fig. 12 ), but with three tergocentral setae on each side in L. zeylanica ; female tergopleurites V–VI each with three tergocentral setae on each side in L. ruiliensis ( Fig. 13 ), but with two setae on each side in L. zeylanica ; male genitalia of L. zeylanica are illustrated without much detail by Dalgleish (1967: fig. 4), but the general shape of the endomeres and thickness of their distal sections differ between the two species ( Fig. 19 ).

Description. Both sexes. Head rounded trapezoidal ( Fig. 15 ), frons slightly concave, lateral margins of preantennal area concave. Dorsal preantennal plate tapering to blunt posterior point. Dorsal preantennal suture diffuse in posterior end, and illustrated approximately. Marginal carina broad. Head chaetotaxy as in Fig. 15 . Dorsal postantennal suture present, widened around aperture of pns. Gular plate with extensive rugose area centrally. Thoracic and abdominal segments and chaetotaxy as in Figs 12–13 ; sternal and subgenital plates lightly sclerotised, and not illustrated.

Male. Tergopleurites II–III each with two tergocentral setae on each side; tergopleurites V–VII each with three tergocentral setae on each side. Anterior end of basal apodeme diffuse, and not illustrated; distal section with parallel lateral margins converging distally ( Fig. 18 ). Endomere with lateral extensions at midline dorsally; endomere with moderate, somewhat angular anterior lobes and pointed posterior lobes ventrally ( Fig. 19 ). Endomeral chaetotaxy as in Figs 18–19 . Parameres short and broad; pst1–2 as in Fig. 19 .

Female. Vulval margin with 11–13 long, slender, marginal setae, and 8–11 long, stout, submarginal setae on each side; two macroseta associated with lightly sclerotised subgenital plate on each side, and four short, slender setae on each side in area between subgenital plate and vulval margin. Subvulval plates elongate, widening distally ( Fig. 21 ).

Type material. Ex Megalaima asiaticus asiaticus : Holotype ♂, Wudiancun, elev. 903–1080 m, Ruili County, Yunnan Province, China, 9 Jan. 2013, Y. Wu & Y. Zhang, bird J0697, GD-PHTH-00141 ( IZGAS). Paratypes: 1♂, 2♀, same data as holotype, GD-PHTH-00142–00144 ( IZGAS) .

Non-types: 2 nymphs, same data as holotype, GD-PHTH-00145–00146 ( IZGAS).

Etymology. The species epithet is derived from the type locality.

Remarks. The male genitalia are partially obscured by gut content in the holotype, hence illustrations are based on the paratype male; the parts of the genitalia that can be seen in the holotype are identical to those of the paratype.

Figures

FIGURES 12–13. Laimoloima ruiliensis n. sp. 12, male habitus, dorsal and ventral views. 13, female habitus, dorsal and ventral views. Note: Since some abdominal setae are broken on both sides of all specimens examined, their lengths are illustrated approximately.

FIGURES 14–15. Head, dorsal and ventral views. 14, male Laimoloima tandani n. sp. 14a, female antenna, dorsal view. 14b, female antenna, ventral view. 15, male Laimoloima ruiliensis n. sp.

FIGURES 16–21. Genitalia. 16, Laimoloima tandani n. sp., male dorsal view. 17, Laimoloima tandani n. sp., male ventral view. 18, Laimoloima ruiliensis n. sp., male dorsal view. 19, Laimoloima ruiliensis n. sp., male ventral view. 20, Laimoloima tandani n. sp., female subgenital plate and vulval margin, ventral view. 21, Laimoloima ruiliensis n. sp., female vulval margin, ventral view.