Guimaraesiella (Dicrurobates)
Creators: name: Gustafsson, Daniel R.
name: Bush, Sarah E.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Phthiraptera
Philopteridae
Guimaraesiella

description: 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
description: Published as part of Gustafsson, Daniel R. & Bush, Sarah E., 2020, A new subgenus and eight new species of Guimaraesiella Eichler, 1949 (Phthiraptera: Ischnocera: Philopteridae: Brueelia-complex), pp. 151-188 in Zootaxa 4885 (2) on pages 185-186, DOI: 10.11646/zootaxa.4885.2.1, http://zenodo.org/record/4296469