Sturnidoecus somnodraco Gustafsson & Bush,

Bush, Sarah E., 2017, Morphological revision of the hyperdiverse Brueelia - complex (Insecta: Phthiraptera: Ischnocera: Philopteridae) with new taxa, checklists and generic key, Zootaxa 4313 (1), pp. 1-443: 255-258

publication ID

https://doi.org/10.11646/zootaxa.4313.1.1

publication LSID

lsid:zoobank.org:pub:A5Fdfba5-F992-44A8-84C2-1756C943C19B

persistent identifier

http://treatment.plazi.org/id/832187E9-FF74-FEC2-FF74-6640FB5EFE04

treatment provided by

Plazi

scientific name

Sturnidoecus somnodraco Gustafsson & Bush
status

new species

Sturnidoecus somnodraco Gustafsson & Bush  , new species

( Figs 420–426View FIGURES 420 – 421View FIGURES 422 – 426)

Type host. Quelea quelea  quelea ( Linnaeus, 1758)  —red-billed quelea  . Other host. Qualea quelea lathami (Smith, 1836)  —red-billed quelea  . Type locality. Hahn, Dakar, Senegal.

Diagnosis. Sturnidoecus somnodraco  n. sp. is the only known species in its species group, and males are separated from all other Sturnidoecus  by their peculiar genitalia ( Figs 423–425View FIGURES 422 – 426). Both the mesosome and the parameres are unique within the Brueelia  -complex, and not easily comparable with any other group within Sturnidoecus  . The lack of as 2 in St. somnodraco  ( Fig. 422View FIGURES 422 – 426) suggests a close relationship with St. mon n. sp. ( Fig. 408View FIGURES 408 – 412), which is the only other Sturnidoecus  species that also lacks this seta. However, the chaetotaxy of both sexes of St. somnodraco  is more similar to that of St. sturni  ( Table 11).

Female St. somnodraco  can be identified by the lack of as3 ( Fig. 422View FIGURES 422 – 426) and the shape of the subgenital plate ( Fig. 426View FIGURES 422 – 426), which is unique within Sturnidoecus  . Unlike St. sturni  ( Fig. 383View FIGURES 379 – 383) or St. mon ( Fig. 412View FIGURES 408 – 412), in which the subgenital plate is roughly triangular, the subgenital plate of St. somnodraco  ( Fig. 426View FIGURES 422 – 426) is largely oval, with a narrow median process more reminiscent of Mirandofures  n. gen. (e.g. Fig. 105View FIGURES 100 – 105) than Sturnidoecus  .

Description. Both sexes. Head shape, structure, and chaetotaxy as in genus description and Fig. 422View FIGURES 422 – 426; as1 absent. Preantennal nodi slender but distinct. Coni slender, reaching far beyond distal margin of scapes. Preocular nodi small and bulging. Postocular nodi small; pos located far posterior to nodi. Gular plate broader than long, angular, with prominent median point. Thoracic and abdominal segments as in genus description and Figs 420– 421View FIGURES 420 – 421. Posterior margin of pterothorax convergent to median point. Sternal plates wide, present on segments II –VI in both sexes.

Male. Abdominal chaetotaxy as in Table 2 and Fig. 420View FIGURES 420 – 421. Male genitalia as in genus and species group descriptions and Figs 423–425View FIGURES 422 – 426. Measurements ex Quelea quelea  quelea  (n = 2): TL = 1.13–1.16; HL = 0.40; HW = 0.40; PRW = 0.24; PTW = 0.36 –0.37; AW = 0.47–0.52. Ex Q. q. lathami  (n = 1): TL = 1.20; HL = 0.41; HW = 0.40; PRW = 0.24; PTW = 0.36; AW = 0.50.

Female. Abdominal chaetotaxy as in Table 2 and Fig. 421View FIGURES 420 – 421. Subgenital plate oval with narrow distal extension of median section ( Fig. 426View FIGURES 422 – 426). Vulval margin more or less flat ( Fig. 426View FIGURES 422 – 426), with 6–9 long, slender vms on each side, and 10–11 short, thorn-like vss on each side; 4–6 vos on each side, with varying size; distal 2 vos approaching vss. Measurements ex Quelea quelea  quelea  (n = 2): TL = 1.32–1.36; HL = 0.42–0.43; HW = 0.43–0.44; PRW = 0.25– 0.26; PTW = 0.39; AW = 0.58–0.59.

Etymology. The species epithet is derived from Latin “ somnus ” for “sleep” and “ draco ” for “dragon. This refers to the shape of the male genitalia ( Figs 423– 425View FIGURES 422 – 426), that are reminiscent of the head of a dragon, sleeping with its arms tucked underneath its chin and elbows protruding laterally.

Type material. Ex Quelea quelea  quelea  : Holotype ♂, Hahn, Dakar, [Dakar Region,] Senegal, 16 Jun. 1955, P. Morel, Brit. Mus. 1964-685 (NHML). Paratypes: 1♂, 2♀, same data as holotype (NHML).

Additional material examined (non-types)

Ex Quelea quelea lathami  : 1♂, Vwaza Wildlife Reserve , Vwaza , Khuta Maji, Malawi, 15 Oct. 2009, Swati Patel, MLW-3746, FMNH-INS 0 0 0 0 0 29 0 79, FMNH-468582 ( FMNH). 

Remarks. Sturnidoecus somnodraco  was included in the phylogeny of Bush et al. (2016: specimen 322), and was strongly supported as a sister to the St. basilewskyi  species group (specimens 318–321)

FMNH

Field Museum of Natural History