Neopsittaconirmus vendulae Sychra

Sychra, Old Ř Ich, 2006, Neopsittaconirmus vendulae, a new species of louse (Phthiraptera: Philopteridae) from the Cockatiel Nymphicus hollandicus (Psittaciformes: Cacatuidae), Zootaxa 1270, pp. 57-68: 58-60

publication ID 10.5281/zenodo.173238

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Neopsittaconirmus vendulae Sychra

new species

Neopsittaconirmus vendulae Sychra   , new species

( Figs. 1–6 View FIGURES 1 – 6 )

Type host: Nymphicus hollandicus (Kerr)  

Male ( Fig. 1 View FIGURES 1 – 6 ): Preantennal region shorter or as long as postantennal, with preantennal/ postantennal ratio 0.90; anterior margin bordered by narrow hyaline margin. Antenna filiform, with basal segment somewhat enlarged. Guttate processes in preantennal region ( Guimarães 1974: 126) circular. Pronotum with 1 long lateroposterior seta on each side; metanotum with 4 very long and 1 medium long marginal setae on each side. Anterior margin of abdominal tergite II (first apparent tergite) slightly split along midline, III –VII wide concave, and VIII –IX almost straight. Short marginal and short anterior seta on each side of abdominal tergite II; tergites IV –VII with medium long tergo­lateral seta on each side; tergites III –VIII with 1 short and 1 medium long tergo­central setae on each side; IX much narrowed with marginal row of 3 short and 1 very long setae, terminally with 4–5 short setae. Posterior margin of subgenital plate deeply split (in dorsal view, Fig. 2 View FIGURES 1 – 6 ). Conspicuous pattern of pigmentation involving lateral and posterior portions of abdominal tergites II –VIII, gular and ventral thoracic plates, temples and guttate processes.

Abdominal sterna II –VII each with 2–4 setae, with lengths as shown ( Fig. 1 View FIGURES 1 – 6 ). Male genitalia as in Figs 3, 4 View FIGURES 1 – 6 . Basal apodeme relatively narrow and long, parameres short and stout, each with very stout subapical seta and conspicuous circular spot on lateral margin (in ventral view, Fig. 4 View FIGURES 1 – 6 ). Mesosomal complex contains from two pairs of sacs or pouches ( Fig. 4 View FIGURES 1 – 6 ). Dimensions: TW, 0.25–0.29; HL, 0.37–0.42; P/P, 0.78–0.95; PW, 0.19–0.21; PL, 0.08–0.12; MW, 0.25–0.31; ML, 0.18–0.20; AWV, 0.27–0.34; AL, 0.85 –1.00; TL, 1.47–1.69.

Female ( Fig. 5 View FIGURES 1 – 6 ). Mostly as for male. Tergo­lateral seta on each side of tergites IV –VII short. Tergites III –VIII with only one short tergo­central setae on each side. Abdominal tergite IX not narrowed, with 2 very long and 1 short setae on each side. Ventral terminalia as in Fig. 6 View FIGURES 1 – 6 ; subgenital plate wide, rounded posteriorly, with chaetotaxy as shown. Dimensions: TW, 0.30–0.34; HL, 0.41–0.46; P/P, 0.76 –1.00; PW, 0.20–0.23; PL, 0.09–0.14; MW, 0.26–0.36; ML, 0.20–0.24; AWV, 0.33–0.42; AL, 1.03–1.28; TL, 1.74–2.05.

Both sexes of N. vendulae   are readily characterized by a unique combination of characters as follows: (1) tergo­lateral setae on each side of tergites IV –VII. This character is identical to those in the species N. circumfasciatus (Piaget)   from Polytelis anthopeplus (Lear)   , N. difficilis Guimarães   from Psittacula alexandri   (L.) and N. anodis (Neumann)   from Psittrichas fulgidus (Lesson)   . Neopsittaconirmus vendulae   can be separated from those species by the shape of the male genitalia, female ventral terminalia, the chaetotaxy of male tergite IX and the lack of sexual dimorphism in the shape of antennae; (2) no sexual dimorphism in the shape of antennae; (3) conspicuous pattern of pigmentation involving lateral and posterior portions of abdominal tergites II –VIII, gular and ventral thoracic plates, temples and guttate processes; and (4) row of three short and one very long setae on tergite IX of male. The above four characters distinguish N. vendulae   from five species of Neopsittaconirmus   described from cockatoos N. borgiolii Conci   from Calyptorhynchus funereus (Shaw)   , N. clayae Guimarães   from Probosciger aterrimus (Gmelin)   , N. albus (Le Souëf & Bullen)   from Cacatua galerita (Latham)   ; N. shanahani Price & Emerson   from Cacatua ducorps (Bonaparte)   , and N. emersoni Guimarães   from Cacatua haematuropygia (Müller)   . Conversely, those four characters place N. vendulae   close to N. eos (Giebel)   from Eolophus roseicapillus (Vieillot)   . However, both sexes of N. vendulae   may be separated from those of N. eos   by a combination of other characters, as follows: (5) unique shape of male genitalia with short and stout parameres, each with a very stout subapical seta; (6) pair of tergo­central setae on each side of tergites III –VIII of male; and (7) female subgenital plate with posterior margin wide, rounded.

Type material: Holotype male ex Nymphicus hollandicus   (captive bird), AUSTRALIA, 1966, R.S. Balter coll. Paratypes: two males and one female, with same data as holotype; 6 males and 8 females, ex Nymphicus hollandicus Kerr   (captive birds), AUSTRALIA, 1965 R. S. Balter coll.; 2 males and 3 females ex Nymphicus hollandicus Kerr   (cage birds), AUSTRALIA, 1971, Geo. Smith coll. All deposited at The Natural History Museum, London ( NHML), B.M. 1969 ­ 101 and B. M. 1971 ­ 509.

Other material: One female and nymph ex N. hollandicus   (captive birds), CZECH REPUBLIC, Vlašim, 17 September 2003, O. Sychra coll. Two males and three females ex N. hollandicus   (captive birds), GERMANY, Saxonie, 7 December 2001, R. Schmäschke coll. One male and one female ex Melopsittacus undulatus   (captive bird), GERMANY, Saxonie, Rochlitz, 20 July 2000, R. Schmäschke coll. All deposited at the Moravian Museum Brno, Czech Republic.

Etymology: This species is named after my wife Vendula Sychrová.


Natural History Museum, Tripoli