Indoceoplanetes 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: 137-139

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-FF02-FF49-FF74-666CFCE5FCFE

treatment provided by

Plazi

scientific name

Indoceoplanetes Gustafsson & Bush
status

new genus

Indoceoplanetes Gustafsson & Bush  , new genus

Brueelia Kéler, 1936a: 257  (in partim).

Type species. Brueelia indonesiana Eichler, 1947: 8 

Diagnosis. The head of Indoceoplanetes  n. gen. ( Figs 219View FIGURES 219 – 223, 226View FIGURES 226 – 230, 233View FIGURES 233 – 237) is superficially similar to that of Brueelia  s. str. ( Fig. 44View FIGURES 44 – 48) and Sychraella  n. gen. ( Fig. 108View FIGURES 108 – 113); these genera all share the uninterrupted marginal carina displaced at osculum that widens into a marginal carinal plate, a narrow hyaline margin, and a similar general head shape. However, these three genera differ in other characteristics. For instance, while as3 and pns are absent in Brueelia  s. str. ( Fig. 44View FIGURES 44 – 48) and Sychraella  n. gen. ( Fig. 108View FIGURES 108 – 113), both are present in Indoceoplanetes  ( Figs 219View FIGURES 219 – 223, 226View FIGURES 226 – 230, 233View FIGURES 233 – 237), and the abdominal chaetotaxy of the three genera are very dissimilar ( Table 2). The female subgenital plate of Brueelia  s. str. ( Fig. 48View FIGURES 44 – 48) reaches the vulval margin and flares into a cross-piece, but this is not the case in Indoceoplanetes  ( Figs 223View FIGURES 219 – 223, 230View FIGURES 226 – 230, 237View FIGURES 233 – 237). The female subgenital plate does not reach the vulval margin in Sychraella  either ( Fig. 113View FIGURES 108 – 113), but in this genus there is a detached laterally submarginal cross-piece that is absent in Indoceoplanetes  ( Figs 223View FIGURES 219 – 223, 230View FIGURES 226 – 230, 237View FIGURES 233 – 237).

Despite these similarities, genetic (Bush et al. 2016) and morphological evidence places Indoceoplanetes  closer to Maculinirmus  , Turdinirmus  , and Titanomessor  n. gen. These four genera share the following characters: aps  absent in both sexes; antennae monomorphic; fII-v2 and fIII-v2 present; female subgenital plate does not flare into cross-piece; mesosomes with pronounced mesosomal lobes and gonopores that are open both distally and proximally; as3 present.

Indoceoplanetes  can be separated from Maculinirmus  by the following characters: pns mesosetae in Indoceoplanetes  ( Figs 219View FIGURES 219 – 223, 226View FIGURES 226 – 230, 233View FIGURES 233 – 237), but microsetae in Maculinirmus  ( Fig. 198View FIGURES 198 – 202); parameral heads folded into Ushaped in Maculinirmus  ( Fig. 201View FIGURES 198 – 202) but blunt in Indoceoplanetes  ( Figs 222View FIGURES 219 – 223, 229View FIGURES 226 – 230, 236View FIGURES 233 – 237); abdominal segment II with multiple sts on each side in both sexes of Maculinirmus  ( Figs 196–197View FIGURES 196 – 197), but with only one seta on each side in Indoceoplanetes  ( Figs 217–218View FIGURES 217 – 218, 224–225View FIGURES 224 – 225, 231–232View FIGURES 231 – 232).

Indoceoplanetes  can be separated from Turdinirmus  by the following characters: temples rounded in Indoceoplanetes  ( Figs 219View FIGURES 219 – 223, 226View FIGURES 226 – 230, 233View FIGURES 233 – 237), but angular in Turdinirmus  ( Figs 184View FIGURES 184 – 188, 191View FIGURES 191 – 195); pns mesosetae in Indoceoplanetes  ( Figs 219View FIGURES 219 – 223, 226View FIGURES 226 – 230, 233View FIGURES 233 – 237), but microsetae in Turdinirmus  ( Figs 184View FIGURES 184 – 188, 191View FIGURES 191 – 195); dorsal preantennal suture, if present, does not extend median to ads in Indoceoplanetes  ( Figs 219View FIGURES 219 – 223, 226View FIGURES 226 – 230, 233View FIGURES 233 – 237), but extends median to ads in Turdinirmus  ( Figs 184View FIGURES 184 – 188, 191View FIGURES 191 – 195); parameral heads bifid in Turdinirmus  ( Figs 187View FIGURES 184 – 188, 194View FIGURES 191 – 195), but blunt in Indoceoplanetes  ( Figs 222View FIGURES 219 – 223, 229View FIGURES 226 – 230, 236View FIGURES 233 – 237).

Indoceoplanetes  can be separated from Titanomessor  by the following characters: dorsal preantennal suture, if present, not medianly continuous, and dorsal anterior plate continuous posteriorly with main head plate in Indoceoplanetes  ( Figs 219View FIGURES 219 – 223, 226View FIGURES 226 – 230, 233View FIGURES 233 – 237), but medianly continuous and cutting off dorsal anterior plate posteriorly in Titanomessor  ( Fig. 212View FIGURES 212 – 216); mts  4–5 in male and mts  4 in female mesosetae in Titanomessor  ( Fig. 212View FIGURES 212 – 216), but microsetae in Indoceoplanetes  ( Figs 219View FIGURES 219 – 223, 226View FIGURES 226 – 230, 233View FIGURES 233 – 237); pos clearly ventral in Titanomessor  ( Fig. 212View FIGURES 212 – 216), but marginal in Indoceoplanetes  ( Figs 219View FIGURES 219 – 223, 226View FIGURES 226 – 230, 233View FIGURES 233 – 237); parameres of Indoceoplanetes  ( Figs 222View FIGURES 219 – 223, 229View FIGURES 226 – 230, 236View FIGURES 233 – 237) not shaped as those of Titanomessor  ( Fig. 215View FIGURES 212 – 216); gonopore does not flare proximally in Indoceoplanetes  ( Figs 221View FIGURES 219 – 223, 228View FIGURES 226 – 230, 235View FIGURES 233 – 237) as it does in Titanomessor  ( Fig. 214View FIGURES 212 – 216).

Description. Both sexes. Head largely translucent, flat- to convex-dome shape ( Figs 219View FIGURES 219 – 223, 226View FIGURES 226 – 230, 233View FIGURES 233 – 237). Frons may be slightly concave. Marginal and ventral carinae prominent. Marginal carina uninterrupted in Indoceoplanetes (Indoceoplanetes)  ( Fig. 219View FIGURES 219 – 223), but interrupted submedianly in In. (Capnodella) ( Figs 226View FIGURES 226 – 230, 233View FIGURES 233 – 237). In both subgenera median section is displaced dorsally and posteriorly at osculum. Dorsal preantennal suture absent in In. ( Indoceoplanetes  ) but present in In. (Capnodella), reaching dsms and ads but not medianly continuous, and not interrupting marginal carina laterally. Ventral anterior plate present, crescent-shaped. Ventral carinae may be diffuse anterior to pulvinus, but in In. (Capnodella) loboccupatrix  n. sp. clearly continuous with marginal carina. Head setae as in Figs 219View FIGURES 219 – 223, 226View FIGURES 226 – 230, 233View FIGURES 233 – 237; pns long; s3 absent. Coni small. Antennae monomorphic. Temporal carinae not visible; mts  3 only long setae. Gular plate broadly triangular.

Prothorax rectangular, largely translucent ( Figs 217–218View FIGURES 217 – 218, 224–224View FIGURES 224 – 225, 231–232View FIGURES 231 – 232); ppss on poster-lateral corner. Proepimera slender, median ends hook-shaped. Pterothorax pentagonal; lateral margins moderately divergent; posterior margin convergent to median point; mms widely interrupted medianly. Meso- and metasterna not fused; 1 seta on postero-lateral corner on each side of each plate. Metepisterna slender, median ends blunt. Metepimera large, rounded, forming node, more median and obvious in In. (Capnodella) than in In. ( Indoceoplanetes  ). Leg chaetotaxy as in Fig. 25View FIGURES 25, except fI-p2, fI-v4 absent.

Abdomen elongated oval ( Figs 217–218View FIGURES 217 – 218, 224–224View FIGURES 224 – 225, 231–232View FIGURES 231 – 232). Tergopleurites bluntly rectangular; tergopleurites II –IX+X in male and tergopleurites II –VIII in female narrowly divided medianly; tergopleurites IX+X and XI fused in females of In. (Capnodella). Sternal plates medianly continuous, not approaching pleurites. Pleural incrassations slender in In. ( Indoceoplanetes  ), but moderate to wide in In. (Capnodella). Re-entrant heads modest [In. ( Indoceoplanetes  )] to large [In. (Capnodella)]. Male subgenital plate trapezoidal, reaching terminal end of abdomen. Female subgenital plate ( Figs 223View FIGURES 219 – 223, 230View FIGURES 226 – 230, 237View FIGURES 233 – 237) roughly pentagonal, approaching vulval margin. Vulval margin ( Figs 223View FIGURES 219 – 223, 230View FIGURES 226 – 230, 237View FIGURES 233 – 237) with few slender vms, thorn-like vss, typically located lateral to vss; vos follow lateral margins of subgenital plate; distal vos approaching or median to vss.

Basal apodeme ( Figs 220View FIGURES 219 – 223, 227View FIGURES 226 – 230, 234View FIGURES 233 – 237) roughly rectangular. Proximal mesosome broadly rounded [In. ( Indoceoplanetes  )] or small, inconspicuous [In. (Capnodella)]. Gonopore ( Figs 221View FIGURES 219 – 223, 228View FIGURES 226 – 230, 235View FIGURES 233 – 237) as convergent or subparallel thickenings on distal mesosome, open distally and proximally. Mesosomal lobes wide, overlapping slightly with parameres, rounded; distal margins serrated or papillate in In. ( Indoceoplanetes  ); 1–2 ames sensilla ventrally near lateral margin of each mesosomal lobe; 1–2 thorn-like pmes dorsally on each side lateral to gonopore, often hidden below median extension of mesosomal lobes; 2 pmes microsetae [In. ( Indoceoplanetes  )] or 2 pmes sensilla [In. (Capnodella)] on each side, lateral to gonopore. Parameral heads ( Figs 222View FIGURES 219 – 223, 229View FIGURES 226 – 230, 236View FIGURES 233 – 237) indistinct, bluntly rounded. Parameral blades broad, translucent; pst1 sensillus; pst2 microseta, laterally near distal tip.

Host distribution. Members of this genus are limited to the Campephagidae  and widely distributed across species of Coracina Vieillot, 1816  and Edolisoma Pucheran, 1853  . In addition, we have identified as Indoceoplanetes  material from species of Lobotos Reichenbach, 1850  and Lalage Boie, 1826  . Morphological variation among specimens of Indoceoplanetes  from different host species within each subgenus is often small.

Geographical distribution. The distribution of Indoceoplanetes  forms an arch around the Indian Ocean, with (described and undescribed) material from both subgenera known from South-West Africa to the Solomon Islands. 

Very little material is known from mainland Asia, but we have seen specimens from Nepal and Thailand, and this apparent gap in the known distribution of Indoceoplanetes  is likely due to unevenness of sampling.

Etymology. Indoceoplanetes  is formed by a contraction of the Indian Ocean, and Greek “ planetoi ” for “wanderer”. This is meant to convey that the members of this genus appear to occur all around the Indian Ocean. Gender: feminine.

Included subgenera

Indoceoplanetes (Indoceoplanetes)  n. subgen. Indoceoplanetes (Capnodella)  n. subgen.

Remarks. The two subgenera described here were placed as sister groups in the phylogeny of Bush et al. (2016). Individuals of both subgenera are occasionally found in samples from the same host individual, suggesting that there is likely some degree of niche differentiation. These samples also often contain Guimaraesiella that has a head shape similar to that of In. (Capnodella). These can be separated from In. (Capnodella) by head and abdominal chaetotaxy, male genitalia, and the structure of the preantennal head (see Guimaraesiella).

Included species

* Indoceoplanetes (Indoceoplanetes) indonesiana ( Eichler, 1947: 8)  n. comb. [in Brueelia  ] * Indoceoplanetes (Capnodella) laurocorythes  new species * Indoceoplanetes (Capnodella) loboccupatrix  new species

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Phthiraptera

Family

Philopteridae

Loc

Indoceoplanetes Gustafsson & Bush

Bush, Sarah E. 2017
2017
Loc

Brueelia Kéler, 1936a : 257

Keler 1936: 257
Loc

Indoceoplanetes (Indoceoplanetes) indonesiana ( Eichler, 1947: 8 )

Eichler 1947: 8