Guimaraesiella (Dicrurobates)

Gustafsson, Daniel R. & Bush, Sarah E., 2020, A new subgenus and eight new species of Guimaraesiella Eichler, 1949 (Phthiraptera: Ischnocera: Philopteridae: Brueelia-complex), Zootaxa 4885 (2), pp. 151-188 : 185-186

Key to identify species of Guimaraesiella (Dicrurobates)

Note: This key is mostly based on male characters. Female-only samples can be identified with some degree of accuracy on head shape, extent of dorsal preantennal plate and shape of the subgenital plate, as setal patterns often overlap between species.

1. Dorsal preantennal suture does not reach ads ( Figs 10 , 31 )................................................... 2

1’. Dorsal preantennal suture reaches ads (e.g. Figs 3 , 17 ), but may be interrupted on at least one side of head, as in Fig. 66... ................................................................................................... 3

2. (1) Preantennal head dome-shaped, with slender marginal carina and dorsal preantennal suture not extending more than half-way between dsms and ads ( Fig. 10 ); aps present on male tergopleurite IV ( Fig. 8 ); aps absent on female tergopleurite VIII ( Fig. 9 ).................................................................. Guimaraesiella (Dicrurobates) dicruri

2’. Preantennal head roughly trapezoidal, with broad marginal carina and dorsal preantennal suture extending more than half-way between dsms and ads ( Fig. 31 ); aps absent on male tergopleurite IV ( Fig. 29 ); aps present on female tergopleurite VIII ( Fig. 30 )................................................................. Guimaraesiella (Dicrurobates) lurida

3. (1.) Mesosome slightly tapering on anterior end, with an additional sclerite associated with gonopore ( Figs 19 , 26 ).......... 4

3’. Mesosome markedly tapering on anterior end (e.g. Figs. 5 , 33 , 47 ), without additional sclerite associated with gonopore.. 5

4. (3.) Mesosome with ventral sclerite reaching the anterior margin, and additional sclerite long, roughly rectangular, with irregular anterior end ( Fig. 26 ); aps present on male tergopleurites IV–V ( Fig. 22 ); aps present on female tergopleurite VIII ( Fig. 23 )............................................................... Guimaraesiella (Dicrurobates) latitemporalis

4’. Mesosome with ventral sclerite not reaching the anterior margin, and additional sclerite short, roughly triangular ( Fig. 19 ); aps absent from male tergopleurites IV–V ( Fig. 15 ); aps absent from female tergopleurite VIII ( Fig. 16 )................................................................................... Guimaraesiella (Dicrurobates) carbonivora

5. (3.) Mesosome with ventral sclerite extending beyond the anterior margin ( Fig. 5 )..................................................................................................... Guimaraesiella (Dicrurobates) sexmaculata

5’. Mesosome with ventral sclerite not extending beyond the anterior margin, or reaching close to anterior margin ( Figs 47 , 54 ) ................................................................................................... 6

6. (5.) Proximal mesosome widening markedly on anterior end ( Figs 47 , 54 ).......................................... 7

6’. Proximal mesosome not widening on anterior end ( Figs 40 , 61 ).............................................. 10

7. (6.) Lateral margins of preantennal area roughly straight, with pronounced antero-lateral corners ( Figs 45 , 52 ).............. 8

7’. Lateral margins of preantennal area convex, with rounded antero-lateral corners ( Fig. 66 )........................... 9

8. (7.) Dorsal preantennal suture reaches lateral margin of head, and ventral anterior plate longer than wide ( Fig. 52 ); male tergopleurite V with aps ( Fig. 50 ); mesosome as in Fig. 54 .............................. Guimaraesiella (Dicrurobates) regis

8’. Dorsal preantennal suture does not reach lateral margins of head, and ventral anterior plate as long as wide, or shorter than wide ( Fig. 45 ); male tergopleurite V without aps ( Fig. 43 ); mesosome as in Fig. 47 ....................................................................................................... Guimaraesiella (Dicrurobates) nana

9. (7.) Mesosome with ventral sclerite almost reaching the anterior margin, as in Fig. 69 [on Oriolus larvatus rolleti ............................................................................. Guimaraesiella (Dicrurobates) campanula

9’. Mesosome with ventral sclerite reaching about half-way to the anterior margin, as in Fig. 70 [on Prionops plumatus poliocephalus ]........................................................ Guimaraesiella (Dicrurobates) campanula

10. (6.) Proximal mesosome greatly overlapping basal apodeme ( Fig. 60 ); ventral sclerite not reaching the anterior margin of mesosome ( Fig. 61 ); female tergopleurite VIII without aps ( Fig. 58 )............ Guimaraesiella (Dicrurobates) transvaalensis

10’. Proximal mesosome slightly overlapping basal apodeme ( Fig. 39 ); ventral sclerite reaching anterior margin of mesosome ( Fig. 40 ); female tergopleurite VIII with aps ( Fig. 37 )............................ Guimaraesiella (Dicrurobates) luzonica

Figures

FIGURES 10–14. Guimaraesiella (Dicrurobates) dicruri (Ansari, 1955). 10, male head, dorsal and ventral views. 11, male genitalia, dorsal view. 12, male mesosome, ventral view. 13, male paramere, dorsal view. 14, female subgenital plate and vulval margin, ventral view.

FIGURES 31–35. Guimaraesiella (Dicrurobates) lurida new species. 31, male head, dorsal and ventral views. 32, male genitalia, dorsal view. 33, male mesosome, ventral view. 34, male paramere, dorsal view. 35, female subgenital plate and vulval margin, ventral view.

FIGURES 3–7. Guimaraesiella (Dicrurobates) sexmaculata (Piaget, 1880). 3, male head, dorsal and ventral views. 4, male genitalia, dorsal view. 5, male mesosome, ventral view. 6, male paramere, dorsal view. 7, female subgenital plate and vulval margin, ventral view.Abbreviations: ads = anterior dorsal seta; ames = anterior mesosomal setae; dsms = dorsal submarginal seta; mts3 = marginal temporal seta 3; pmes = posterior mesosomal setae; pns = post-nodal seta; pst1–2 = parameral setae 1–2; s4 = sensillus 4; vms = vulval marginal setae; vos = vulval oblique setae; vss = vulval submarginal setae.

FIGURES 17–21. Guimaraesiella (Dicrurobates) carbonivora new species. 17, male head, dorsal and ventral views. 18, male genitalia, dorsal view. 19, male mesosome, ventral view. 20, male paramere, dorsal view. 21, female subgenital plate and vulval margin, ventral view.

FIGURES 66–71. Guimaraesiella (Dicrurobates) campanula new species. 66, male head, dorsal and ventral views. 67, male genitalia, dorsal view. 68, male paramere, dorsal view. 69, male mesosome, ventral view. 70, male mesosome, ventral view. 71, female subgenital plate and vulval margin, ventral view. Note: Fig. 70 is based on material from Prionops plumatus poliocephalus.

FIGURES 8–9. Guimaraesiella (Dicrurobates) dicruri (Ansari, 1955). 8, male habitus, dorsal and ventral views. 9, female habitus, dorsal and ventral views.

FIGURES 29–30. Guimaraesiella (Dicrurobates) lurida new species. 29, male habitus, dorsal and ventral views. 30, female habitus, dorsal and ventral views.

FIGURES 24–28. Guimaraesiella (Dicrurobates) latitemporalis new species. 24, male head, dorsal and ventral views. 25, male genitalia, dorsal view. 26, male mesosome, ventral view. 27, male paramere, dorsal view. 28, female subgenital plate and vulval margin, ventral view.

FIGURES 45–49. Guimaraesiella (Dicrurobates) nana new species. 45, male head, dorsal and ventral views. 46, male genitalia, dorsal view. 47, male mesosome, ventral view. 48, male paramere, dorsal view. 49, female subgenital plate and vulval margin, ventral view.

FIGURES 22–23. Guimaraesiella (Dicrurobates) latitemporalis new species. 22, male habitus, dorsal and ventral views. 23, female habitus, dorsal and ventral views.

FIGURES 15–16. Guimaraesiella (Dicrurobates) carbonivora new species. 15, male habitus, dorsal and ventral views. 16, female habitus, dorsal and ventral views.

FIGURES 52–56. Guimaraesiella (Dicrurobates) regis new species. 52, male head, dorsal and ventral views. 53, male genitalia, dorsal view. 54, male mesosome, ventral view. 55, male paramere, dorsal view. 56, female subgenital plate and vulval margin, ventral view.

FIGURES 38–42. Guimaraesiella (Dicrurobates) luzonica new species. 38, male head, dorsal and ventral views. 39, male genitalia, dorsal view. 40, male mesosome, ventral view. 41, male paramere, dorsal view. 42, female subgenital plate and vulval margin, ventral view.

FIGURES 59–63. Guimaraesiella (Dicrurobates) transvaalensis new species. 59, male head, dorsal and ventral views. 60, male genitalia, dorsal view. 61, male mesosome, ventral view. 62, male paramere, dorsal view. 63, female subgenital plate and vulval margin, ventral view.

FIGURES 50–51. Guimaraesiella (Dicrurobates) regis new species. 50, male habitus, dorsal and ventral views. 51, female habitus, dorsal and ventral views.

FIGURES 43–44. Guimaraesiella (Dicrurobates) nana new species. 43, male habitus, dorsal and ventral views. 44, female habitus, dorsal and ventral views.

FIGURES 57–58. Guimaraesiella (Dicrurobates) transvaalensis new species. 57, male habitus, dorsal and ventral views. 58, female habitus, dorsal and ventral views.

FIGURES 36–37. Guimaraesiella (Dicrurobates) luzonica new species. 36, male habitus, dorsal and ventral views. 37, female habitus, dorsal and ventral views.