Guimaraesiella cinnamomea, 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 : 6-9

Guimaraesiella cinnamomea sp. nov.

urn:lsid:zoobank.org:act:FB7EB901-06C4-40DF-99C4-62C6A11095E3

Figs 1–7

Diagnosis

Guimaraesiella cinnamomea sp. nov. is most similar to Guimaraesiella caligogularis sp. nov.; they share the following combination of characters: dorsal preantennal suture reaches ads ( Figs 3 , 38 ); male

tergopleurites IV–V without aps, but tergopleurite VI with aps ( Figs 1 , 36 ); male tergopleurite VIII with 1 tps on each side ( Figs 1 , 36 ); proximal mesosome only slightly constricted distally ( Figs 6 , 41 ).

These two species can be separated by the following characters: female abdominal segment IV without ps in Gu. cinnamomea sp. nov. ( Fig. 2 ), but with 1 ps on each side in Gu. caligogularis sp. nov. ( Fig. 37 ); male abdominal segment V with 2 ps on each side in Gu. cinnamomea sp. nov. ( Fig. 1 ), but with 1 ps on each side in Gu. caligogularis sp. nov. ( Fig. 36 ); anterior extension of ventral sclerite broad in Gu. caligogularis sp. nov. ( Fig. 41 ) but narrow in Gu. cinnamomea sp. nov. ( Fig. 6 ; anterior end not clearly visible in examined specimens); overall shape of mesosome differs between Gu. cinnamomea sp. nov. ( Fig. 6 ) and Gu. caligogularis sp. nov. ( Fig. 41 ).

Etymology

The species name is derived from Latin ‘ cinnamon ’ for ‘cinnamon’, referring to the pigmentation of this species and the subspecific name of the host.

Material examined

Holotype (ex Iole viridescens cinnamomeoventris) THAILAND • 1 ♂; Ranong Province, Kra Buri District [as Kru Bur], Pak Chan ; 6 May 1964; W. Songprakob [as Songphabob] and W. Suwan Laong; WS933 ; BPBM.

Paratypes (ex Iole viridescens cinnamomeoventris) THAILAND • 2 ♂♂, 3 ♀♀; same collection data as for holotype; BPBM .

Non-type material (ex Iole propinqua propinqua ) THAILAND • 1 ♀; Loei Province, Dan Sai, Kok Sathon, Phu Lom Lo Mountains ; 14 Feb. 1955; R.E. Elbel leg.; RE-4633, [RT-]B-31189; BPBM .

Type host

Iole viridescens cinnamomeoventris Baker, 1917 – olive bulbul.

Other host

Iole propinqua propinqua (Oustalet, 1903) – gray-eyed bulbul.

Description

Both sexes

Head pentagonal ( Fig. 3 ), lateral margins of preantennal area straight to slightly convex, anterior end slightly elongated and narrowed, frons narrow, straight to slightly concave. Marginal carina narrowing markedly in anterior end, median margin almost straight to slightly irregular. Dorsal anterior plate with shallowly concave anterior margin and irregular lateral margins. Ventral anterior plate almost triangular, but with moderately concave anterior margin and blunt posterior end. Dorsal preantennal suture reaches ads, dsms, and lateral margins of head. Preantennal nodi extended medianly. Head chaetotaxy as in Fig. 3 . Coni almost reach distal margins of scapes. Temples rounded. Temporal marginal carina slender, largely regular. Thoracic and abdominal segments as in Figs 1–2 . Base pigmentation conspicuously cinnamon in mounted specimens, darkening in head carina and nodi, gular plate, proepimera, metepisterna, and lateral sections of tergopleurites.

Male

Thoracic and abdominal chaetotaxy as in Fig. 1 . Basal apodeme slender ( Fig. 4 ), anterior end rounded, lateral margins slightly constricted at mid-length. Proximal mesosome broad ( Fig. 6 ), only slightly narrowed distally, with straight anterior margin. Proximal end of ventral sclerite not clearly visible in examined males. Mesosomal lobes bulging somewhat in anterior end, slender distally; 3 ames sensilla on each side; 2 pmes microsetae on lateral margins of mesosome. Gonopore broad, deeply concave distally but almost straight proximally. Parameral heads as in Fig. 5 . Parameral blades attenuated and elongated distally; pst1–2 as in Fig. 5 . Measurements as in Table 1 .

Female

Thoracic and abdominal chaetotaxy as in Fig. 2 . Subgenital plate with slightly convex anterior margin and wide anchor-shaped lateral submarginal extensions almost reaching lateral ends of vulval margin ( Fig. 7 ). Vulval margin distinctly rounded, with 2–3 short, slender vms and 4–7 short, thorn-like vss on each side; 3–4 short, slender vos on each side of subgenital plate; distal 1 vos median to vss. Measurements as in Table 1 .

Remarks

The female specimen from Iole propinqua propinqua is larger and paler than females from the type host. Head shape and other characters are similar between the females from both host species, and we tentatively consider all the specimens listed above conspecific.

Figures

Figs 1–2. Guimaraesiella cinnamomea sp. nov. 1. Male habitus, dorsal and ventral views. 2. Female habitus, dorsal and ventral views. Abbreviations: aps = accessory post-spiracular seta; ps = paratergal seta; ss = sutural seta; sts = sternal seta.

Figs 3–7. Guimaraesiella cinnamomea sp. nov. 3. Male head, dorsal and ventral views. 4. Male genitalia, dorsal view. 5. Male paramere, dorsal view. 6. Male mesosome, ventral view. 7. Female subgenital plate and vulval margin, ventral view. Abbreviations: ads = anterior dorsal seta; ames = anterior mesosomal seta; dsms = dorsal submarginal seta; mts1–3 = marginal temporal seta 1–3; pmes = posterior mesosomal seta; pos = preocular seta; pst1–2 = parameral setae 1–2; s4 = postantennal head sensillum 4; vms = vulval marginal setae; vos = vulval oblique setae; vss = vulval submarginal setae.

Figs 38–42. Guimaraesiella caligogularis sp. nov. 38. Male head, dorsal and ventral views. 39. Male genitalia, dorsal view. 40. Male paramere, dorsal view. 41. Male mesosome, ventral view. 42. Female subgenital plate and vulval margin, ventral view.

Figs 36–37. Guimaraesiella caligogularis sp. nov.36. Male habitus, dorsal and ventral views.37. Female habitus, dorsal and ventral views.