Philopterus micropunctatus, Gustafsson & Najer & Zou & Bush, 2022

Gustafsson, Daniel R., Najer, Tomas, Zou, Fasheng & Bush, Sarah E., 2022, New species of Philopterus Nitzsch, 1818 (Ischnocera: Philopteridae), with notes on Cypseloecus Conci, 1941, European Journal of Taxonomy 790 (1), pp. 1-52 : 11-16

publication ID

https://doi.org/ 10.5852/ejt.2022.790.1641

publication LSID

lsid:zoobank.org:pub:E3ED109B-70C8-414D-A245-6E3590C9E5B5

DOI

https://doi.org/10.5281/zenodo.6304085

persistent identifier

https://treatment.plazi.org/id/2A337930-2324-465E-95D6-8F7EC902C9ED

taxon LSID

lsid:zoobank.org:act:2A337930-2324-465E-95D6-8F7EC902C9ED

treatment provided by

Felipe

scientific name

Philopterus micropunctatus
status

sp. nov.

Philopterus micropunctatus sp. nov.

urn:lsid:zoobank.org:act:2A337930-2324-465E-95D6-8F7EC902C9ED

Figs 7–12 View Figs 7–8 View Figs 9–12 ; Tables 1–4 View Table 1 View Table 2 View Table 3 View Table 4

Diagnosis

Several species of Philopterus have been described from motacillid hosts; however, few of them are adequately described or illustrated. Złotorzycka & Lucińska (1976) erected the P. passerinus species group based on size, the shape of the trabecula, the shape and chaetotaxy of the male subgenital plate, and the size of the male parameres. They placed Philopterus passerinus (Denny, 1842) (ex Motacilla alba Linnaeus, 1758), P. pavidus ( Złotorzycka, 1964) (ex Motacilla flava Linnaeus, 1758), P. vultuosus Złotorzycka, 1964 (ex Anthus trivialis trivialis (Linnaeus, 1758)), and P. hanzaki Balát, 1955 (ex Anthus spinoletta spinoletta (Linnaeus, 1758)) in this group. The other two known species from motacillid hosts, P. irkutensis Fedorenko, 1985 (ex Anthus richardi Vieillot, 1818) and P. subitus Fedorenko, 1985 (ex Motacilla cinerea Tunstall, 1771) may also be closely related to the P. passerinus group, based on the shape of the parameres and trabecula in the original descriptions. However, a complete revision of the Philopterus species on motacillid hosts is sorely needed.

The most distinctive character of P. micropunctatus sp. nov. is the elongated preantennal head and very long dorsal anterior plate ( Fig. 9 View Figs 9–12 ). The fragmented ‘dots’ between the female subvulval plates in P. micropunctatus sp. nov. ( Fig. 12 View Figs 9–12 ) are not found in any other species in the P. passerinus group we have examined. The shape of the head and dorsal anterior plate separates P. micropunctatus sp. nov. from P. irkutensis , P. subitus , P. passerinus , and P. vultuosus . Balát’s (1955) only illustration of P. hanzaki is of the dorsal anterior plate, which is shorter than that of P. micropunctatus sp. nov. and with a differently shaped posterior projection. No illustration of P. pavidus has ever been published, and Eichler’s text description (in Eichler 1953, as Docophorus passerinus Denny, 1842 ; Złotorzycka’s replacement name P. pavidus was based on this description) does not contain enough detail to separate P. pavidus from any other Philopterus , regardless of host.

Etymology

The species name is derived from the Greek ‘ mikro ’ for ‘small’ and the Latin ‘ punctatus ’ for ‘dotted’, referring to the many small dots median to the subvulval plates.

Material examined

Holotype THAILAND • ♂; Nan Province, Bun Yun, Pang Nam Un ; 21 Jan. 1953; R.E. Elbel and H.G. Deignan leg.; ex Anthus hodgsoni; “ RE-2103 , RT-B-17720 ”; NHMUK.

Paratypes THAILAND • 1 ♀; same collection data as for holotype; NHMUK 3 ♀♀; same collection data as for holotype; PIPR .

Type host

Anthus hodgsoni Richmond, 1907 – olive-backed pipit (Motacillidae).

Description

Head shape and chaetotaxy as in Fig. 9 View Figs 9–12 , preantennal area moderately broad. Hyaline margin wide, slightly concave medianly, not extending much lateral to marginal carina. Dorsal preantennal plate long, narrowing gently posteriorly, with distinct lateral thickenings along much of lateral margins anterior to ads. Ventral anterior plate bluntly crescent-shaped. Coni small, pointed posteriorly. Thoracic and abdominal segments as in Figs 7–8 View Figs 7–8 . Measurements as in Table 1 View Table 1 .

Male

Thoracic and abdominal chaetotaxy as in Fig. 7 View Figs 7–8 and Tables 2–4 View Table 2 View Table 3 View Table 4 . Central sternal plates absent on segments II–VI. Lateral accessory plates present on segments III–VI. Subgenital plate broad, but diffuse distally and illustrated approximately. Basal apodeme short and slender ( Figs 10–11 View Figs 9–12 ). Mesosomal thickening truncated oval; mesosome with 3 microsetae on each side ( Fig. 10 View Figs 9–12 ). Gonopore bluntly lanceolate, with wide, roughly triangular sclerotization anterior and lateral to opening, proximally fused to basal apodeme; 2 sensilla on each side of gonopore. Parameres short and stocky ( Figs 10–11 View Figs 9–12 ); pst1–2 as in Fig. 10 View Figs 9–12 .

Female

Thoracic and abdominal chaetotaxy as in Fig. 8 View Figs 7–8 and Tables 2–4 View Table 2 View Table 3 View Table 4 . Central sternal plates absent on segments II–VI. Lateral accessory plates present on segments III–VI. Subgenital plate as in Fig. 12 View Figs 9–12 ; lateral sclerotizations of vulval area extended posteriorly to approach vulval margin; in one female also extended anteriorly to fuse with subgenital plate. Vulval margin more or less straight, chaetotaxy as in Fig. 12 View Figs 9–12 and Table 3 View Table 3 . Subvulval plates slender distally, with many small fragmentary dots between plates as in Fig. 12 View Figs 9–12 .

NHMUK

Natural History Museum, London

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Psocodea

SuperFamily

Ischnocera

Family

Philopteridae

Genus

Philopterus

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