Bizarrifrons picturatus Carriker & Díaz-Ungría, 1961,

Valim, Michel P. & Palma, Ricardo L., 2012, Redescriptions of two species and descriptions of three new species of the louse genus Bizarrifrons Eichler, 1938 (Phthiraptera: Ischnocera: Philopteridae), Zootaxa 3273, pp. 28-50: 41-45

publication ID

http://doi.org/ 10.5281/zenodo.208835

publication LSID

lsid:zoobank.org:pub:2C1F0131-CF1B-46C5-91EC-D56F654826A3

persistent identifier

http://treatment.plazi.org/id/E1161B34-FF9D-0833-20CA-8BF72348B34A

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Plazi

scientific name

Bizarrifrons picturatus Carriker & Díaz-Ungría, 1961
status

 

Bizarrifrons picturatus Carriker & Díaz-Ungría, 1961 

( Figs 31–39View FIGURES 31 – 32View FIGURES 33 – 34View FIGURES 35 – 39)

Type host: Cacicus cela (Linnaeus, 1758)  —Yellow-rumped cacique

Bizarrifrons picturatus Carriker & Díaz-Ungría, 1961  : Nov. Cien. Mus. Hist. Nat. La Salle 28: 44, figs 44–45. Bizarrifrons picturatus Carriker [& Díaz-Ungría], 1961  ; Price et al. 2003. Chewing lice: world checklist: 152.

Descriptions of immature stages. First nymphal instar. Habitus as in Fig. 31View FIGURES 31 – 32. Head anteriorly pointed with tips of the marginal carinae parallel, the ventral carina surpassing the marginal carina as in adults. Dorso-anterior head plate quadrangular and ventro-anterior head plate U-shaped. Preantennal region symmetric. Premarginal, occipital and ventral carinae brownish. Scape white, pedicel and flageromeres brownish. Pterothorax with 1 long seta on each side, situated about the mid-point of the posterior margin, plus a short spiniform seta on each postero-lateral angle. Without meso- or metasternal plates, or setae. Without paratergal and hemitergal plates. Tergal chaetotaxy (on each side): segments II –III with 1 innermost posterior seta; IV –VIII with 1 innermost posterior seta and a postspiracular setae; IX, with 2 long setae plus 2 small and anterior. Sternal chaetotaxy (on each side): 1 very short seta on II –VIII; 2 long and 1 short setae on IX. Paratergal chaetotaxy: II –III without seta; IV –V, 1 very short seta; VI –VIII, 1 long and 1 very short setae; IX+X, 1 long setae. Measurements (n = 2): POL, 0.16–0.17; POW, 0.26; TW, 0.35–0.36; HL, 0.38; PW, 0.22; MW, 0.28–0.29; AWV, 0.40–0.42; TL, 0.98 –1.00.

Second nymphal instar. Habitus as in Fig. 32View FIGURES 31 – 32. Head very pointed with tips of the marginal carinae parallel, as in the first instar. Preantennal region sligthly asymmetric. Dorso-anterior head plate quadrangular, but with anterior margin concave; the ventro-anterior head plate markedly U-shaped and producing most of the asymmetry. Marginal, occipital and ventral carinae brownish. Scape white, pedicel and flageromeres brownish. Pterothorax with 4 long setae on each side, plus a short spiniform seta on each postero-lateral angle. Without meso- or metasternal plates, but with 1 seta on each area corresponding to the meso- and metasternum. Paratergal plates not pigmented and faintly distinguishable, only depicted on their posterior margins as a fold on the tegument, present on segments II –VII (maybe also on VIII). Without hemitergal plates. Tergal chaetotaxy (on each side): II –III with 1 innermost posterior seta; IV –VIII with 1 innermost posterior seta and a postspiracular setae; IX with 2 long setae plus 2 small and anterior. Sternal chaetotaxy (on each side): 1 seta on II –VIII, those on IV –VIII very short; 2 long and 1 medium sized setae on IX. Paratergal chaetotaxy: II –III, without seta; IV –V with 1 long seta; VI –VII, 2 long; VIII, 3 long; IX+X, 1 long setae. Measurements (n = 2): POL, 0.21; POW, 0.29; TW, 0.42–0.43; HL, 0.45–0.46; PW, 0.25–0.27; MW, 0.33–0.35; AWV, 0.43–0.46; TL, 1.14–1.16.

Redescription of adults. Male. Habitus as in Fig. 33View FIGURES 33 – 34, coloration similar to Fig. 7View FIGURES 5 – 8. Preantennal region markedly asymmetric ( Fig. 33View FIGURES 33 – 34). Conus long, surpassing the distal margin of the scape. Flagellomeres and pedicel distinctly more pigmented than the scape. Pterothorax with posterior margin brownish with a clear median gap, and 8–11 setae on each side. Episterna II and III strongly pigmented. Tergites II –VIII well developed, tapering towards the mid-line, well pigmented, except for a small round area around the spiracles; IX+X the narrowest. Tergal chaetotaxy uniform with some individual variation (on each side): segment II with 1 inner and 2 outer posterior setae; III with 1 inner and 2–3 outer posterior setae; IV –V with 1 inner and 3–4 outer posterior, a postspiracular seta and 1 postspiracular accessory (none in one side of the IV segment); VI –VII with 1 inner and 2–3 outer posterior setae, a postspiracular seta and 1 postspiracular accessory; VIII with 5 posterior setae and a trichobothrium latero-posterior; IX+X with 8–9 setae, 2 longer than the others. Postero-internal angle of tergites VII –VIII straight ( Figs 33View FIGURES 33 – 34 and 35View FIGURES 35 – 39). Without sclerites around the genital opening. Sternal plates on II –VI well developed, narrow, laterally pointed and entirely pigmented. Sternal chaetotaxy (on each side): segments II –VI with 1 medium long setae, surpassing the plate and reaching the following plate. Paratergal chaetotaxy: segments II –III without setae; IV –V with 2; VI –VIII, 3; IX+X, 2. Male subgenital plate as in Fig. 36View FIGURES 35 – 39, without fenestrae; genitalia as in Fig. 37View FIGURES 35 – 39. Measurements (n = 1): POL, 0.29; POW, 0.33; TW, 0.53; HL, 0.60; DPW, 0.10; PW, 0.31; MW, 0.46; AWV, 0.63; BAL, 0.24; PL, 0.14; GW, 0.15; GL, 0.36; TL, 1.65.

Female. Habitus as in Fig. 34View FIGURES 33 – 34, coloration similar to Fig. 8View FIGURES 5 – 8. Similar to the male, but differing in the tergal chaetotaxy and terminal segments. Tergite IX+X medially fused, with a shallow anterior notch in the midline, completely pigmented. Tergal chaetotaxy (on each side): segments II –VII with 3 (sometimes 2 or 4 in one side) inner posterior seta; VIII with 4 (rarely 2 or 3 in one side) inner posterior setae and a trichobothrium latero-posterior; IX+X with 4 setae, 2 short (sometimes with duplication of these setae only in one side), only reaching the terminal plates; and 2 long, surpassing the end of the abdomen. Postero-internal angles of tergites II –III pointed, those of IV –VIII rounded. Subgenital plate tapering from the base to the distal end ( Fig. 38View FIGURES 35 – 39), with 3–6 short setae laterad, on each side ( Fig. 39View FIGURES 35 – 39). Vulva with 7–9 short marginal setae, and 10–15 short submarginal spiniform setae on each side ( Fig. 39View FIGURES 35 – 39). Measurements (n = 4): POL, 0.29–0.30; POW, 0.36–0.38; TW, 0.57; HL, 0.61–0.63; DPW, 0.11–0.12; PW, 0.34; MW, 0.50–0.51; AWV, 0.73–0.78; TL, 1.91–1.99.

Remarks. Although Carriker & Díaz-Ungría (1961) define Bizarrifrons picturatus  as having the conus not surpassing the end of the scape, in all specimens studied the conus was slightly longer than the first antennal segment. Otherwise, our specimens fit with all other morphological features given in the original description of B. picturatus  . As in B. magus  , the first nymphal instar of B. picturatus  have a more primitive symmetric head, as shown for other genera within Philopteridae  by Mey (1998). However, there are differences in the development of the head structures between these two species: the head of the first nymphal instar of B. picturatus  has a well-formed antero-dorsal head plate (absent in B. magus  ) and its ventral carina is prolonged beyond the marginal carina. Although we have not seen the third nymphal instar of B. picturatus  , the first two nymphal instars of these species show a number of additional differential characters which could be related to their placement in different speciesgroups, i.e. (1) a whitish pedicel in B. magus  but pigmented in B. picturatus  ; (2) minute pleural setae on IV –V and very minute on VI –VIII in nymphs I of B. magus  , but medium sized in IV –VIII of B. picturatus  ; (3) medium sized pleural setae on IV –VIII in nymphs II of B. magus  , but very long in B. picturatus  ; and (4) paratergal plates in nymphs II are strongly pigmented in B. magus  but barely noticed in B. picturatus  . A study of nymphs from other species in each group is necessary to see whether these morphological features do correlate with species-groups within the genus Bizarrifrons  .

Material examined. 1 male, 4 females (one DNA voucher Bipi.8.25.2011.1), 2 nymphs I, 2 nymphs II, ex Cacicus cela  , JAP 754 MPEG 63230; BRAZIL: Amazonas, Município Maraã, Lago Cumapi (01° 43 ' 48.6 "S; 65 ° 52 ' 45.5 "W), 31.VII. 2007, J.D. Weckstein coll., at MZUSP (except for the DNA voucher in FMNH).

DNA

Department of Natural Resources, Environment, The Arts and Sport

MPEG

Museu Paraense Emilio Goeldi

MZUSP

Museu de Zoologia da Universidade de Sao Paulo

FMNH

Field Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Phthiraptera

Family

Philopteridae

Genus

Bizarrifrons

Loc

Bizarrifrons picturatus Carriker & Díaz-Ungría, 1961

Valim, Michel P. & Palma, Ricardo L. 2012
2012
Loc

Bizarrifrons picturatus Carriker & Díaz-Ungría, 1961

Carriker & Diaz-Ungria 1961
1961
Loc

Bizarrifrons picturatus

Carriker 1961
1961