Indoceoplanetes (Indoceoplanetes) microgenitalis Gustafsson, 2022

Gustafsson, Daniel R. & Bush, Sarah E., 2022, Chewing lice of the Brueelia-complex (Phthiraptera: Ischnocera) parasitic on members of the Campephagidae (Aves: Passeriformes), with description of a new subgenus and 14 new species, Zootaxa 5165 (1), pp. 1-55 : 4

Indoceoplanetes (Indoceoplanetes) microgenitalis Gustafsson & Bush, new species

( Figs 1–7 )

Type host. Coracina caeruleogrisea strenua (Schlegel, 1871) – stout-billed cuckooshrike.

Type locality. Mount Bosavi , Southern Highlands Province, Papua New Guinea .

Diagnosis. Shape of the proximal mesosome and mesosomal lobes suggest a close relationship between In. (In.) microgenitalis new species ( Figs 4–6 ) and In. (In.) saburrata new species ( Figs 11–13 ).

These two species can be separated by the following characters: proximal mesosome with slight lateral bulges in In. (In.) microgenitalis ( Fig. 5 ), but without such bulges in In. (In.) saburrata ( Fig. 12 ); female subgenital plate gently rounded distally in In. (In.) microgenitalis ( Fig. 7 ), but broadly flattened distally in In. (In.) saburrata ( Fig. 14 ); shape of dorsal fringe and distal margin of mesosome differ between species ( Figs 4–5 ; 11–12 ); male tergopleurite V with 2 ss and male tergopleurites VI–VII with>2 ss on each side in In. (In.) microgenitalis ( Fig. 1 ), but tergopleurite V with 1 ss and tergopleurites VI–VII with 2 ss on each side in In. (In.) saburrata ( Fig. 8 ); abdominal segment VI in both sexes with 3 ps on each side in In. (In.) microgenitalis ( Figs 1–2 ), but with 2 ps on each side in In. (In.) saburrata ( Figs 8–9 ); lateral margins of preantennal head more convex in In. (In.) microgenitalis ( Fig. 3 ) than in In. (In.) saburrata ( Fig. 10 ).

Description. Both sexes. Head rounded trapezoidal ( Fig. 3 ), lateral margins of preantennal head convex, frons slightly concave. Marginal carina broad, narrowing conspicuously near dsms, deeply displaced and widened at osculum. Ventral anterior plate slender, crescent-shaped. Head chaetotaxy as in Fig. 3 . Preantennal nodi large, bulging. Pre- and post-ocular nodi large, connected dorsally by broad ocular band. Marginal temporal carina slender. Gular plate triangular, tapering anteriorly. Thoracic and abdominal segments as in Figs 1–2 . Base pigmentation translucent; preantennal and preocular nodi dark brown; posterior section of marginal carina, margins of antennal sockets, parts of mandibular framework, ocular band, postocular nodi, gular plate, proepimera, metepisterna, medium brown; sternal plates II–VI and subgenital plates pale brown, anterior sternal plates paler than posterior plates.

Male. Thoracic and abdominal chaetotaxy as in Fig. 1 ; tergopleurite V with 2 ss on each side; tergopleurites VI–VII with 3–4 ss on each side; segment VI with 3 ps on each side. Basal apodeme roundly broadened anteriorly ( Fig. 4 ). Proximal mesosome with lateral bulges but not marked extensions ( Fig. 5 ), and anterior margin convex. Mesosomal lobes more or less parallel. Distal margin of mesosome deeply concave. Gonopore with antero-lateral extensions slightly hooked. Dorsal fringe not tilted posteriorly, with small rounded thumb-like process on anterior margin. Chaetotaxy: 2 ventral gpmes sensilla on each side of distal gonopore; lpmes not visible in single examined male; 1 dorsal ames sensilla on each side distal to dorsal fringe. Parameres and pst1–2 as in Fig. 6 . Measurements as in Table 1 .

Female. Thoracic and abdominal chaetotaxy as in Fig. 2 ; segment VI with 3 ps on each side. Subgenital plate with broadly rounded distal margin ( Fig. 7 ). Vulval margin flattened medianly, with 2 short, slender vms and 1 short, thorn-like vss on each side; 4–6 slender vos on each side of subgenital plate; distal 2–3 vos median to vss, and markedly longer than vms. Measurements as in Table 1 .

Etymology. The species epithet is derived from Greek “ micros ” for “small” and Latin “ genitalis ” for “genitalia”, referring to the relatively small male genitalia of this species.

Type material. Ex Coracina caeruleogrisea strenua : Holotype ♂, Mt. Bosavi, Southern Highlands Province, Papua New Guinea, 16 May 1973, 103199 ( NHML). Paratypes: 1♀, same data as holotype ( NHML) .

Figures

FIGURES 1–2. Indoceoplanetes (Indoceoplanetes) microgenitalis new species ex Coracina caeruleogrisea strenua. 1, male habitus, dorsal and ventral views. 2, female habitus, dorsal and ventral views. Abbreviations: mms = marginal mesometathoracic seta; ps = paratergal seta; psps = principal postspiracular seta; ss = sutural seta.

FIGURES 3–7. Indoceoplanetes (Indoceoplanetes) microgenitalis new species ex Coracina caeruleogrisea strenua. 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 seta; as2 = anterior seta 2; dsms = dorsal submarginal seta; gpmes = gonoporal posterior mesosomal seta; lpmes = lateral posterior mesosomal seta; mts3 = marginal temporal seta 3; pst1–2 = parameral setae 1–2; vms = vulval marginal seta; vos = vulval oblique seta; vss = vulval submarginal seta.

FIGURES 10–14. Indoceoplanetes (Indoceoplanetes) saburrata new species ex Coracina lineata ombriosa. 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 8–9. Indoceoplanetes (Indoceoplanetes) saburrata new species ex Coracina lineata ombriosa. 8, male habitus, dorsal and ventral views. 9, female habitus, dorsal and ventral views.