Indoceoplanetes (Capnodella) laurocorythes 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: 146

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

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Indoceoplanetes (Capnodella) laurocorythes Gustafsson & Bush
status

new species

Indoceoplanetes (Capnodella) laurocorythes Gustafsson & Bush  , new species

( Figs 224–230View FIGURES 224 – 225View FIGURES 226 – 230)

Type host. Edolisoma holopolium holopolium (Sharpe, 1888)  —Solomons cuckoo-shrike. Type locality. Malagona, elev. 10 m, Choiseul Island, Solomon Islands.

Diagnosis. Indoceoplanetes (Capnodella) laurocorythes  n. sp. is separated from In. (Cp.) loboccupatrix  n. sp. by the following characters: sternal plates III –VI and subgenital plates of both sexes with brown pigmentation in In. (Cp.) loboccupatrix  , but sternal plates III –VI and subgenital plate are unpigmented in male In. (Cp.) laurocorythes  and only the subgenital plate has pale brown pigmentation in female In. (Cp.) laurocorythes  ; gonopore slender with narrow, V-shaped anterior grove in In. (Cp.) loboccupatrix  ( Fig. 235View FIGURES 233 – 237) but broad with broad, U-shaped anterior grove in In. (Cp.) laurocorythes  ( Fig. 228View FIGURES 226 – 230); distal margin of primary mesomeral lobes with serrated or with sublateral hook in In. (Cp.) loboccupatrix  , but lobes of In. (Cp.) laurocorythes  smooth; female subgenital plate slender in In. (Cp.) loboccupatrix  ( Fig. 237View FIGURES 233 – 237), but broad in In. (Cp.) laurocorythes  ( Fig. 230View FIGURES 226 – 230); 2–3 vsm in In. (Cp.) loboccupatrix  ( Fig. 237View FIGURES 233 – 237), but 0–1 vsm in In. (Cp.) laurocorythes  ( Fig. 230View FIGURES 226 – 230); female tergopleurites IX+X completely fused with tergopleurites XI in In. (Cp.) laurocorythes  ( Fig. 225View FIGURES 224 – 225), but only partially fused in In. (Cp.) loboccupatrix  ( Fig. 232View FIGURES 231 – 232).

Description. Both sexes. Head shape, structure, and chaetotaxy as in genus and subgenus descriptions and Fig. 226View FIGURES 226 – 230. Dorsal anterior plate without pale brown band, and submedian interruption of marginal carina clear. Pre- and postocular nodi approximately equal in size. Gular plate with prominent, slender anterior point. Pigmentation pale brown, with nodi, temporal marginal carina, and parts of mandibles darker. Thoracic and abdominal segments as in genus and subgenus descriptions and Figs 224–225View FIGURES 224 – 225. Pigmentation pale brown, with proepimera and metepisterna darker. Sublateral nodi of pterothorax very dark. Abdomen largely translucent, but lateral tergopleurites of both sexes dark brown.

Male. Subgenital plate translucent. Abdominal chaetotaxy as in Table 2 and Fig. 224View FIGURES 224 – 225. Basal apodeme ( Fig. 227View FIGURES 226 – 230) slender. Proximal mesosome short, broadly rounded. Gonopore ( Fig. 228View FIGURES 226 – 230) as convergent sclerites, open distally and proximally; anterior grove of gonopore broad, U-shaped. Mesosomal lobes wide, rounded, with smooth distal margin; 1 ames microseta on lateral margin of mesosomal lobes on each side; 2 pmes sensilla on each side of gonopore. Parameral heads ( Fig. 229View FIGURES 226 – 230) blunt, small. Parameral blades widely rounded posteriorly; pst1 sensillus; pst2 microseta, lateral near distal tip. Measurements ex Edolisoma holopolium holopolium  (n = 13 except n = 12 for AW and n = 11 for TL): TL = 1.24–1.38 (1.31); HL = 0.30–0.36 (0.33); HW = 0.29–0.33 (0.31); PRW = 0.18–0.20 (0.19); PTW = 0.26–0.30 (0.28); AW = 0.33–0.45 (0.39).

Female. Subgenital plate with pale brown pigmentation. Abdominal chaetotaxy as in Table 2 and Fig. 225View FIGURES 224 – 225. Subgenital plate almost pentagonal, but with blunt distal margin ( Fig. 230View FIGURES 226 – 230) that does not reach vulval margin. Vulval margin ( Fig. 230View FIGURES 226 – 230) with distinctly concave median section; 1 vms microseta on each side, often absent, 4–5 short, thorn-like vss on each side; 6–8 long, slender vos on each side; distal 2–3 vos median or distal to vss. Measurements ex Edolisoma holopolium holopolium  (n = 20 except n = 18 for TL and n = 17 for AW): TL = 1.45– 1.62 (1.55); HL = 0.33–0.37 (0.35); HW = 0.32–0.36 (0.34); PRW = 0.19–0.25 (0.22); PTW = 0.28–0.37 (0.33); AW = 0.41–0.50 (0.45).

Etymology. The species epithet is formed by “ Lauru ”, the indigenous name for the type locality, Choiseul Island, and Greek “ korythos ”, for “helmet”, referring to the helmet-like shape of the re-entrant heads of the pleurites ( Figs 224–225View FIGURES 224 – 225).

Type material. Ex Edolisoma holopolium holopolium  : Holotype ♂, Malagona, elev. 10 m, Choiseul Island, Solomon Islands, 6 Mar. 1964, BBM-SI-23 609 ( BPBMAbout BPBM)  . Paratypes: 2♂, 3♀, same data as holotype ( BPBMAbout BPBM)  ; 5♂, 12♀, 1 unknown, Malagona , Choiseul Island, Solomon Islands, 1 Jun. 1964, BBM-SI-23929, BBM-SI-23609 ( BPBMAbout BPBM)  ; 2♂, 6♀, Tabalia , elev. 20 m, Guadalcanal Island, Solomon Islands, 5 Jun. 1964, P.J. Shanahan, BBM-SI- 23963 ( BPBMAbout BPBM)  ; 1♀, Tabalia , elev. 20 m, Guadalcanal Island, Solomon Islands, 29 May 1964, P.J. Shanahan, BBM- SI-23911 ( BPBMAbout BPBM)  .

Remarks. As with subgenus In. ( Indoceoplanetes  ) n. subgen., specimens examined of the subgenus In. (Capnodella) n. subgen. from various host species appear to be very similar, or identical [apart from that described as In. (Cp.) loboccupatrix  below]. There are slight, but consistent, differences between material from different host species in head shape and size, pigmentation patterns, details of the male genitalia, and the abdominal and vulval chaetotaxy. A more thorough study of these specimens is needed to ascertain whether these all are a single nonhost-specific species or a group of very similar species. In the phylogeny of Bush et al. (2016), samples from Coracina striata  and C. caerulescens  were genetically very similar, whereas a sample from Cyanograculus azureus was more distantly related.