Penenirmus albiventris ( Scopoli, 1763 )

Sychra, Oldřich, Kounek, Filip, Papoušek, Ivo, Ćapek, Miroslav, Cárdenas-Callirgos, Jorge Manuel, Franco, Sebastian & Literák, Ivan, 2014, Chewing lice (Phthiraptera: Amblycera et Ischnocera) from wrens (Passeriformes: Troglodytidae), with description of a new species of Myrsidea, Acta Entomologica Musei Nationalis Pragae 54 (1), pp. 1-27 : 10-13

Penenirmus albiventris ( Scopoli, 1763)

( Figs 3–5 )

Pediculus albiventris Scopoli, 1763: 385 .

Docophorus troglodytis Waterston, 1915: 27 , fig. F.

Degeeriella longuliceps Blagoveshtchensky, 1940: 65 , fig. 19.

Penenirmus albiventris ( Scopoli, 1763) ; CLAY & HOPKINS (1951): 28, figs 38–40.

Type host. Troglodytes troglodytes (Linnaeus, 1758) – Eurasian wren

Material examined: 6 ♀♀ 3 33(O.Sychra CZ110–112), ex Troglodytes troglodytes troglodytes, CZECH REPUBLIC: Ćerťák (49°34'N, 17°59' E, 400 m a.s.l.); 3. and 15.v.2007, Sychra and Literák leg. ( MMBC); 10 ♀♀, 10 33, (O.Sychra PE06–15), ex Troglodytes aedon audax , PERU: Pantanos de Villa , Lima (12°13’ S, 76°59’ W; at sea level), 20–22.vii.2011, Literák leg. ( MMBC) .

Variability. WATERSTON (1915) provided a very detailed description of this species under the name Docophorus troglodytis from Troglodytes troglodytes borealis Fischer, 1861 from the Faroe Islands, including four figures. Subsequently, CLAY & HOPKINS (1951) briefly reviewed the main characters of the species described as Pediculus albiventris by SCOPOLI (1763), added three more figures, including male genitalia, and designated a neotype. Recently, CICCHINO (1980) reported this species on one T. aedon bonariae Hellmayr, 1919 in Argentina. He wrote that his material was similar to the description by CLAY & HOPKINS (1951) and presented only a figure of male genitalia.

We contribute detailed figures of this species ( Figs 3–5 ). We found two minor differences between samples from different host species: (1) number of setae on the metanotum, 14 on specimens from T. troglodytes and 16–17 on specimens from T. aedon ; (2) number of posterocentral setae on the female tergite VIII, 4 on specimens from T. troglodytes but only 2 on specimens from T. aedon . Also, our specimens differ slightly from the description and redescription of P. albiventris presented by WATERSTON (1915) and CLAY & HOPKINS (1951) respectively, thus increasing knowledge of the intraspecific morphological variability of this species from different geographic areas. Our setal counts and dimensions are as follows [setal counts and dimensions mentioned by WATERSTON (1915) and CLAY & HOPKINS (1951) are given in parentheses and separated by a semicolon, respectively. The nomenclature of head setae follows that proposed by CLAY (1951)]:

Czech Republic. Male (n = 3). As in Figs 3A and 4A . Head with postantennal suture, with one post-nodal and three post-temporal setae on each side, all of them short and spinelike ( Fig. 5A ). Marginal temporal setae 1 and 3 long, other marginal temporal setae short. Anterior dorsal setae of forehead shorter than the distance between them. Dorsal anterior head plate as in Fig. 5A .

Metanotum and metapleurite with an almost continuous row of 7 evenly spaced setae on each side (outmost lateral short metapleural seta included). Mesosternal plate with 2 setae, metasternal plate with 4 setae.

Tergites II–VI with anterior median notches, joined by a narrow posterior pigmented strip. Postspiracular setae on tergites III–VII long (0.28–0.33). Posterocentral tergal setae: II, 5–6 (6); III, 6–7 (8); IV, 6–7 (7–8); V, 6–7 (6–7); VI, 4–5 (5–7); VII, 2–3 (4); VIII, 2 (2); IX, 4–6 (6). Sternites lightly sclerotized with almost inconspicuous lateral plates. Sternal setae: II, 5–6 (6; 6); III, 9 (8–12; 8); IV, 10 (8–12; 8); V, 8–9 (8–12; 8); VI, 7–8 (8–12; 6); VII, 2 (2; 2). Paratergal setae: II–III, 0 (0); IV–V, 1 (1); VI–VII, 2 (2); VIII–IX, 3 (3). Genitalia as in Fig. 5C with basal sclerites on the penis.

Dimensions: TW, 0.35–0.37 (0.371; 0.37); HL, 0.39–0.40 (0.414; 0.42); PW, 0.20 (0.214; 0.20); MW, 0.32 (0.328; 0.33); AW, 0.41 (0.471; 0.45); TL, 1.35–1.39 (1.24–1.33; 1.33).

Female (n = 6). As in Figs 3B and 4B . As for male, except as follows: Head with only one short spine-like post-temporal setae on each side ( Fig. 5B ).

Tergites II–VIII with anterior median notches. Postspiracular setae 0.31–0.37 long. Posterocentral tergal setae: II, 6 (6; 8); III, 5–8 (6–7; 10); IV, 7–10 (6–7; 10); V, 6–9 (6–7; 10); VI, 6–8 (6–7; 8); VII, 6–7 (6–7; 6); VIII, 4 (4; 4); IX, 2 (6; 2). Sternal setae: II, 6 (6); III, 7–10 (8–12); IV, 8–11 (8–12); V, 8–9 (8–12); VI, 7–9 (8–12); VII, 2 (0); VIII, 2 (0). Subvulval sclerites well-developed. Ventral terminalia as in Fig. 5D ; subgenital plate wide and slightly convex posteriorly, with 25–30 fine and 8–10 very short spine-like setae.

Dimensions: TW, 0.38–0.39 (0.407; 0.45); HL, 0.41–0.42 (0.471; 0.48); PW, 0.20–0.21 (0.228; 0.25); MW, 0.43 (0.371; 0.40); AW, 0.50–0.51 (0.585; 0.63); TL, 1.58–1.61 (1.6; 1.85).

Peru. Male (n = 10). As in Fig. 3C . Identical to specimens from the Czech Republic except as follows: Metanotum and metapleurite with an almost continuous row of 8 evenly spaced setae on each side (less often 9 on one side). The most lateral short metapleural seta is also included. Metasternal plate with 4–6 setae.

Postspiracular setae 0.30–0.38 long. Posterocentral tergal setae: II, 6–7 (6); III, 6–7 (8); IV, 6–7 (7–8); V, 6–7 (6–7); VI, 4–6 (5–7); VII, 2–4 (4); VIII, 2 (2); IX, 2–4 (6). Sternal setae: II, 4–7 (6; 6); III, 8–11 (8–12; 8); IV, 8–10 (8–12; 8); V, 7–9 (8–12; 8); VI, 6–8 (8–12; 6); VII, 2 (2; 2).

Dimensions: TW, 0.38–0.39 (0.371; 0.37); HL, 0.42–0.43 (0.414; 0.42); PW, 0.21–0.22 (0.214; 0.20); MW, 0.34–0.35 (0.328; 0.33); AW, 0.49 (0.471; 0.45); TL, 1.34–1.35 (1.24–1.33; 1.33).

Female (n = 10). As in Fig. 3D . Postspiracular setae 0.37–0.40 long. Posterocentral tergal setae: II, 6–8 (6; 8); III, 7–9 (6–7; 10); IV, 7–10 (6–7; 10); V, 6–9 (6–7; 10); VI, 6–8 (6–7; 8); VII, 4–7 (6–7; 6); VIII, 2 (4; 4); IX, 2 (6; 2). Sternal setae: II, 6–8 (6); III, 8–10 (8–12); IV, 8–11 (8–12); V, 8–11 (8–12); VI, 7–10 (8–12); VII, 2 (0); VIII, 2 (0). Subgenital plate with 33–37 fine and 10–13 very short spine-like setae.

Dimensions: TW, 0.38–0.45 (0.407; 0.45); HL, 0.45–0.46 (0.471; 0.48); PW, 0.23 (0.228; 0.25); MW, 0.43–0.44 (0.371; 0.40); AW, 0.57–0.59 (0.585; 0.63); TL, 1.63–1.68 (1.6; 1.85).

Figures

Fig. 3.A–B – Penenirmus albiventris (Scopoli, 1763) from Troglodytes troglodytes from Slovakia (A – male; B – female). C–D – P. albiventris (Scopoli, 1763) from T. aedon audax from Peru (C – male; D – female). Scale bar: 1 mm.

Fig. 4. Penenirmus albiventris (Scopoli, 1763). A – male; B – female. Scales: A, B = 0.50 mm.

Fig.5. Penenirmus albiventris (Scopoli, 1763).A – dorso-ventral view of head of male; B – dorso-ventral view of head of female; C – male genitalia; D – ventral view of female terminalia. Scales:A, B = 0.20 mm, C, D = 0.10 mm.