Hecatrishula biguttata ( Kellogg & Paine, 1914 )

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: 92-95

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-FFD1-FF9D-FF74-6784FCCDFADB

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scientific name

Hecatrishula biguttata ( Kellogg & Paine, 1914 )
status

n. comb.

Hecatrishula biguttata ( Kellogg & Paine, 1914)  n. comb.

( Figs 138–145View FIGURES 138 – 139View FIGURES 140 – 145)

Nirmus biguttatus Kellogg & Paine, 1914: 234  .

Degeeriella biguttata ( Kellogg & Paine, 1914)  ; Harrison, 1915: 109. Brueelia biguttata ( Kellogg & Paine, 1914)  ; Hopkins & Clay, 1952: 53. Corvonirmus biguttatus ( Kellogg & Paine, 1914)  ; Złotorzycka, 1997: 189.

Type host. Pyrrhocorax graculus digitatus Ehrenberg, 1833  —yellow-billed chough [as Pyrrhocorax graculus  ].

Type locality. Gilgit, Sarhad and Little Pamir , Northwest Frontier of India; Khambajong , Tibet. 

Other hosts. Pyrrhocorax graculus graculus ( Linnaeus, 1758)  —yellow-billed chough. Pyrrhocorax pyrrhocorax erythroramphos (Vieillot, 1817)  [Ref.: Ansari 1956d: 392, as Pyrrhocorax pyrrhocorax pyrrhocorax  ]—red-billed chough. Pyrrhocorax pyrrhocorax himalayanus (Gould, 1862)  [Ref.: Ansari 1956d: 392]—red-billed chough. Pyrrhocorax pyrrhocorax docilis (S.G. Gmelin, 1774)  [Ref.: Ansari 1956d: 302, as Pyrrhocorax pyrrhocorax pontif  ex from Persia and Pyrrhocorax pyrrhocorax pyrrhocorax  from Crete]—red-billed chough.

Description. Both sexes. Head shape, structure, and chaetotaxy as in genus description and Fig. 140View FIGURES 140 – 145. Marginal carina wide, irregular. Ventral carina narrow but visible anterior to pulvinus, not clearly continuous with marginal carina. Preantennal nodi slender. Coni wide but short. Pre- and postocular nodi moderate in size; pos on anterior margin of postocular nodi. Gular plate large, rugose medianly, with slight lateral projections. Pigmentation almost uniformly brown. Thoracic and abdominal segments as in genus and subgenus descriptions and Figs 138–139View FIGURES 138 – 139; ppss on postero-lateral corners. Pigmentation almost uniformly brown.

Male. Scape ( Fig. 140View FIGURES 140 – 145) longer than in female ( Fig. 141View FIGURES 140 – 145), slightly swollen. Abdominal chaetotaxy as in Table 2 and Fig. 138View FIGURES 138 – 139. Male genitalia typical for genus ( Fig. 142View FIGURES 140 – 145). Basal apodeme rounded rectangular. Proximal mesosome broad, rounded. Gonopore ( Fig. 143View FIGURES 140 – 145) much elongated, narrowly open distally. Small U-shaped ventral thickening anterior to gonopore. Mesosomal lobes extended laterally, overlapping parameres. Median margin of lobes heavily papillate ( Fig. 143View FIGURES 140 – 145). 3 stout pmes on each side of gonopore. Parameral heads 4-fingered ( Fig. 144View FIGURES 140 – 145). Parameral blades bent around mesosome, slightly elongated distally; pst1 sensillus, near distal tip; pst2 microseta, lateral near distal tip. Measurements ex Pyrrhocorax graculus graculus  (n = 2): TL = 1.36–1.47; HL = 0.42–0.43; HW = 0.40– 0.41; PRW = 0.23–0.25; PTW = 0.35–0.43; AW = 0.49–0.50.

Female. Scape not swollen ( Fig. 141View FIGURES 140 – 145). Abdominal chaetotaxy as in Table 2 and Fig. 139View FIGURES 138 – 139. Subgenital plate broadly triangular ( Fig. 145View FIGURES 140 – 145), with only narrow median section approaching or reaching vulval margin. Vulval margin ( Fig. 145View FIGURES 140 – 145) gently rounded, with 7–8 long, slender vms on each side, and 4–6 stout, spine-like vss on each side; 4–5 slender vos on each side; the distal 2 vos median to vss. Measurements ex Pyrrhocorax graculus graculus  (n = 12): TL = 1.51–1.88 (1.71); HL = 0.44–0.48 (0.46); HW = 0.41–0.46 (0.43); PRW = 0.23–0.28 (0.25); PTW = 0.37–0.45 (0.41); AW = 0.49–0.65 (0.57). Ex P. g. digitatus  (n = 2): TL = 1.65–1.83; HL = 0.46–0.47; HW = 0.42– 0.46; PRW = 0.25–0.27; PTW = 0.40–0.44; AW = 0.58–0.65.

Material examined (non-types). Ex Pyrrhocorax graculus graculus  : 5♂, 9♀, “Pyrenées”, Apr. 1932, R. Meinertzhagen, 822, 3013–4 (NHML) [one slide contains one female Hecatrishula docilis  ]. 1♂, 4♀, Ibach, Schwyz, Switzerland, 12 Dec. 1965, W. Büttiker, 114-1–2 (NHML); 1♂, 1♀, Andermatt, Uri, Switzerland, Apr. 1942, W. Büttiker, 314, Brit. Mus. 1966-653 (NHML); 1♀, Julijske Alpe, Slovenia, 5 Jul. 1955, S. Brelih, 499 (PMSL); 1♂, 4♀, Kaminske Alpe, Slovenia, 29 Mar. 1953, S. Brelih, 200, 1557–8, 2476–7 (PMSL); 1♀, Julijske Alpe, Slovenia, 5 Jul. 1955, S. Brelih, 2555 (NMNH).

Ex Pyrrhocorax graculus digitatus  [as Pyrrhocorax graculus forsythi  ]: 2♀, Ladakh, Jammu & Kashmir State, India, Apr. 1925, 3015 (NHML) [slide contains one male Hecatrishula docilis  ].

Remarks. Kellogg & Paine (1914: 234) originally described Brueelia biguttatus  from Graculus graculus  and Nucifraga multipunctata  from North-West India. Material from the latter host species was subsequently described as a separate species, Degeeriella multipunctata Clay, 1936  . The correct subspecies of Pyrrhocorax graculus  in India is P. graculus digitatus  , not P. graculus graculus  as stated by Clay (1936: 906) and followed by Price et al. (2003: 153).

Hecatrishula biguttata  and He. docilis  both occur on the same host species, and some slides examined from a single host contain both species, suggesting that they even occur on the same host individual. Although there appears to be no geographical structure to their distributions, our material examined of both species is widely scattered and rarely extensive enough from any locality to draw any definite conclusions. Whether these two morphologically very distinct forms are actually two morphs of the same species, or two different species is not known, and should be established genetically. One possibility is that these taxa are in the early stages of morphological differentiation into different ecomorphs.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Phthiraptera

Family

Philopteridae

Genus

Hecatrishula

Loc

Hecatrishula biguttata ( Kellogg & Paine, 1914 )

Bush, Sarah E. 2017
2017
Loc

Degeeriella biguttata (

Zlotorzycka 1997: 189
Hopkins 1952: 53
Harrison 1915: 109
1915
Loc

Nirmus biguttatus

Kellogg 1914: 234