Guimaraesiella mayoensis, Gustafsson & Najer & Zou & Bush, 2022

Gustafsson, Daniel R., Najer, Tomas, Zou, Fasheng & Bush, Sarah E., 2022, The ischnoceran chewing lice (Phthiraptera: Ischnocera) of bulbuls (Aves: Passeriformes: Pycnonotidae), with descriptions of 18 new species, European Journal of Taxonomy 800, pp. 1-88 : 16-19

publication ID	https://doi.org/ 10.5852/ejt.2022.800.1683
publication LSID	lsid:zoobank.org:pub:213B577F-867D-4ECD-AD2C-48ACA71801B5
DOI	https://doi.org/10.5281/zenodo.6358691
persistent identifier	https://treatment.plazi.org/id/621D4015-6DA4-446A-B1C6-62CEF4D42D79
taxon LSID	lsid:zoobank.org:act:621D4015-6DA4-446A-B1C6-62CEF4D42D79
treatment provided by	Felipe
scientific name	Guimaraesiella mayoensis
status	sp. nov.

Treatment

Guimaraesiella mayoensis sp. nov.

urn:lsid:zoobank.org:act:621D4015-6DA4-446A-B1C6-62CEF4D42D79

Figs 15–21 View Figs 15–16 View Figs 17–21

Diagnosis

Guimaraesiella mayoensis sp. nov. is most similar to Gu. phlaoalopha sp. nov., with which it shares the following characters: male tergopleurites IV–V without aps, but tergopleurite VI with aps ( Figs 15 View Figs 15–16 , 43 View Figs 43–44 ); dorsal preantennal suture reaching ads ( Figs 17 View Figs 17–21 , 45 View Figs 45–49 ); male tergopleurite VIII with 2 tps on each side ( Fig. 15 View Figs 15–16 , 43 View Figs 43–44 ); female abdominal segment IV with ps ( Figs 15 View Figs 15–16 , 44 View Figs 43–44 ).

These two species can be separated by the following characters: abdominal segment IV with 1 ps on each side in both sexes in Gu. phlaoalopha sp. nov. ( Figs 43–44 View Figs 43–44 ), but with 2 ps on each side in Gu. mayoensis sp. nov. ( Figs 15–16 View Figs 15–16 ); male abdominal segments VI–VII with 3 ps on each side in Gu. mayoensis sp. nov. ( Fig. 15 View Figs 15–16 ), but with only 2 ps on each side in Gu. phlaoalopha sp. nov. ( Fig. 43 View Figs 43–44 ); proximal mesosome constricted distally and with clearly concave anterior margin in Gu. phlaoalopha sp. nov. ( Fig. 48 View Figs 45–49 ), but barely or not constricted distally and with straight or slightly convex anterior margin in Gu. mayoensis sp. nov. ( Fig. 20 View Figs 17–21 ); shape of ventral sclerite of mesosome differs between species ( Figs 20 View Figs 17–21 , 48 View Figs 45–49 ), and sclerite with proximal thickening in Gu. phlaoalopha sp. nov. ( Fig. 48 View Figs 45–49 ) that is absent in Gu. mayoensis sp. nov. ( Fig. 20 View Figs 17–21 ).

Etymology

The species name is derived from the type locality.

Material examined

Holotype (ex Hypsipetes everetti everetti) PHILIPPINES • ♂; Mindanao, Davao Province, Mount Mayo, Limot Mati ; 11 Jun. 1965; D.S. Rabor leg.; B-8263; BPBM.

Paratypes PHILIPPINES • 4 ♂♂, 12 ♀♀, 2 nymphs; Mindanao, Davao Province, Mount Mayo, Unloh Mati ; 3200–4200 ft a.s.l.; 9 Nov. 1965; D.S. Rabor leg.; B-8717; BPBM .

Type host

Hypsipetes everetti everetti (Tweeddale, 1877) – yellowish bulbul.

Description

Both sexes

Head pentagonal, short ( Fig. 17 View Figs 17–21 ), lateral margins of preantennal head slightly convex, but anterior fourth straight to concave, frons concave. Marginal carina broad, narrowing slightly in anterior end, median margins irregular, posterior end relatively narrow. Dorsal anterior plate with shallowly concave anterior margin and convex lateral margins. Ventral anterior plate pale, and often difficult to see, roughly triangular, but with anterior margin concave. Dorsal preantennal suture reaches ads, in some specimens extends slightly median to ads; suture reaches lateral margins of head. Preantennal nodi extended slightly medianly. Head chaetotaxy as in Fig. 17 View Figs 17–21 . Coni reach beyond distal margins of scapes. Lateral margins of postantennal head almost parallel. Temples gently rounded. Temporal marginal carina slender, and postocular nodi very slight. Thoracic and abdominal segments as in Figs 15–16 View Figs 15–16 . Base pigmentation very pale brown, only slightly darker in head carina and nodi, gular plate, proepimera, and metepisterna. Lateral sections of tergopleurites II–IV pale, in more posterior segments distinctly darker.

Male

Thoracic and abdominal chaetotaxy as in Fig. 15 View Figs 15–16 . Basal apodeme broad ( Fig. 18 View Figs 17–21 ), clearly but shallowly constricted at mid-length. Proximal mesosome short, roughly square-shaped ( Fig. 20 View Figs 17–21 ). Ventral sclerite without anterior thickening, short and broad, almost reaching anterior margin of mesosome. Mesosomal lobes slender; 3 ames sensilla on each side; 2 pmes microsetae on lateral margins of mesosome. Gonopore inverse U-shaped, with small, pointed extensions on anterior margin. Parameral heads as in Fig. 19 View Figs 17–21 . Parameral blades broad, stocky, narrowing suddenly near distal end, with tips bent laterally; pst1–2 as in Fig. 19 View Figs 17–21 . Measurements as in Table 1 View Table 1 .

Female

Thoracic and abdominal chaetotaxy as in Fig. 16 View Figs 15–16 . Distal subgenital plate largely translucent, and here illustrated approximately ( Fig. 21 View Figs 17–21 ); lateral submarginal extensions reach more than halfway to lateral ends of vulval margin. Vulval margin gently rounded ( Fig. 21 View Figs 17–21 ), with 3–4 short, slender vms and 6–8 short, thorn-like vss on each side; 5–7 short, slender vos on each side of subgenital plate; distal 1–2 vos median to vms. Measurements as in Table 1 View Table 1 .