Myrsidea franciscae Soto Madrid & Sychra, 2020

Ramon, Madrid, Soto, Old, Sychra, rich, Benedick, Suzan, Edwards, David P., Efeykin, Boris D., Fandrem, Marte, Haugaasen, Torbjørn, Teterina, Anastasia, Tomassi, Suzanne & Tolstenkov, Oleg, 2020, Diversity and host associations of Myrsidea chewing lice (Phthiraptera: Menoponidae) in the tropical rainforest of Malaysian Borneo, International Journal for Parasitology: Parasites and Wildlife 13, pp. 231-247 : 236-237

3.1.4. Myrsidea franciscae Soto Madrid & Sychra , new species

( Fig. 3A–D , 6C–D ).

Type host. Rhipidura javanica ( Sparrman, 1788) – Malaysian Pied Fantail ( Rhipiduridae ).

Type locality. YSFMA in Sabah, MALAYSIA (4 ◦ 58 ′ N, 117 ◦ 4 ′ E) .

Type material. Holotype, ♀, MALAYSIA: YSFMA in Sabah (4 ◦ 58 ′ N, 117 ◦ 4 ′ E), ex Rhipidura javanica , 22.viii.2015 (Ram´on Soto Madrid) ( MMBC) . Paratypes, 26 with the same data as holotype.

Diagnosis. This new species is well recognized by the male genital sac sclerite ( Fig. 3D ) that is, to our knowledge, unique within all oriental Myrsidea in its shape and structure with only small simple lateral lobelike structures. Both sexes are characterised by the following combination of characters: 1) abdominal segments with well-defined median gap in each row of tergal setae; 2) small number of tergal setae, especially tergites VII–VIII with only 4 setae; 3) small number of sternal setae, especially sternite III with 10–14 setae and sternite VII with 6–8 setae. These characters place M. franciscae sp.n. very close to M. carmenae sp.

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n. Except different male genital sac sclerite (compare Fig. 3D vs. Fig. 2D ) these two species can be separate by: 1) inner posterior seta of last tergum of female not longer than anal fringe setae with length 0.03 (vs. 0.10–0.13), and 2) quite long inner tergal seta on abdominal segment VII (0.10–0.12 vs. 0.06).

Female (n = 1). As in Figs. 3A and 6C . Hypopharyngeal sclerites fully developed. Shape of head as in Fig. 3B . Length of DHS 10, 0.05; DHS 11, 0.10; ratio DHS 10/11, 0.49. Ls5, 0.04 long, latero-ventral fringe with 9 setae. Gula with 3–4 setae on each side. Pronotum with 6 setae on posterior margin and 3 short spiniform setae at each lateral corner. Prosternal plate with rounded anterior margin ( Fig. 3A ). First tibia with 3 outer ventro-lateral and 4 dorso-lateral setae. Mesonotum divided. Metanotum not enlarged, with 4 marginal setae; metasternal plate with 6 setae; metapleurites with 3 short strong spiniform setae. Femur III with 13 setae in ventral setal brush. Tergites not enlarged, all with straight posterior margin. Abdominal segments with well-defined median gap in each row of tergal setae ( Fig. 3A ). Tergal setae (postspiracular setae and on tergites II–VIII also short associated setae are not included): I, 7; II, 12; III, 10; IV, 7; V, 11; VI, 6; VII, 4; VIII, 4. Postspiracular setae very long on II, IV, VII and VIII (0.35–0.48); long on I, III V and VI (0.20–0.25). Inner posterior seta of last tergum not longer than anal fringe setae with length 0.03; length of short lateral marginal seta of last segment, 0.03. Pleural setae: I, 4; II, 6–7; III, 6–7; IV, 6–7; V, 6; VI, 5; VII, 4; VIII, 3. Pleurites with only short spine-like setae. Pleurite VIII with inner setae (0.06–0.07) as long as outer (0.04). Anterior margin of sternal plate II with a medial notch. Sternal setae: I, 0; II, 4–5 in each aster, aster setae length: s1, 0.08–0.09; s2, 0.06–0.08; s3, 0.04; s4, 0.04; s5, 0.04; with 14 marginal setae between asters, 4 medioanterior; III, 10; IV, 20; V, 22; VI, 20; VII, 7; VIII–IX, 10; and 11 setae on deeply serrated vulval margin; sternites III–VII without medioanterior setae. Anal fringe formed by 30 dosral and 30 ventral setae.

Dimensions: TW, 0.43; POW, 0.33; HL, 0.29; PW, 0.27; MW, 0.38; AW, 0.51; ANW, 0.16; TL, 1.30.

Male (n = 2). As in Fig. 6D . Similar as female except as follows. Length of DHS 10, 0.05; DHS 11, 0.09–0.10; ratio DHS 10/11, 0.50–0.57. Ls5, 0.03–0.04 long, latero-ventral fringe with 9 setae. Gula with 3–4 setae on each side. Pronotum with 6–7 setae on posterior margin. Metanotum not enlarged with 4 marginal setae (the most posterolateral setae are not counted); metasternal plate with 7 setae; metapleurites with 2–3 short spiniform strong setae. Femur III with 14–15 setae in ventral setal brush. Abdominal segments with well-defined median gap in each row of tergal setae. Tergal setae (postspiracular setae and on tergites II–VIII also short associated setae are not included): I, 5–6; II, 9–10; III, 9–11; IV, 7–8; V, 7–8; VI, 6; VII, 4; VIII, 4; length of longer inner tergal seta on abdominal segment VII (as defined in Hellenthal and Price, 2003), 0.10–0.12. Postspiracular setae very long on II, IV, VII and VIII (0.31–0.45); long on I, III V and VI (0.14–0.19). Length of inner posterior seta of last tergum, 0.02–0.05; short lateral marginal seta of last segment, 0.13. Pleural setae: I, 3–4; II, 6; III, 6; IV, 4–6; V, 5; VI, 5–6; VII, 3; VIII, 3. Pleurites with only short spine-like setae. Pleurite VIII with inner setae (0.06–0.08) twice as long as outer (0.03). Anterior margin of sternal plate II with a medial notch ( Fig. 3C ). Sternal setae: I, 0; II, 4–5 in each aster, aster setae length: s1, 0.07–0.08; s2, 0.06–0.07; s3, 0.05–0.07; s4, 0.04–0.06; s5, 0.03; with 12–14 marginal setae between asters, 5–7 medioanterior; III, 13–14; IV, 23; V, 22–24; VI, 20; VII, 8; VIII, 4; remainder of plate, 4; and with 2–3 setae posteriorly; sternites III–VII without medioanterior setae. With 8 internal anal setae. Genital sac scleriteas in Fig. 3D .

Dimensions: TW, 0.39; POW, 0.29–0.30; HL, 0.26–0.27; PW, 0.23–0.24; MW, 0.32–0.33; AW, 0.41–0.42; GW, 0.09–0.11; GL, 0.32–0.34; ParL, 0.07; GSL, 0.30–0.35; TL, 1.02–1.05.

Etymology. This species epithet is named in honor of Francisca Madrid Martínez, grandmother of the first author.

3.1.5. Myrsidea johnsoni Hellenthal and Price (2003) Myrsidea johnsoni Hellenthal and Price (2003): 13 . Type host:

Pycnonotus atriceps ( Temminck, 1822) – Black-headed Bulbul ( Pycnonotidae ).

Material studied. 2♀, 26, MALAYSIA: YSFMA in Sabah (4 ◦ 58 ′ N, 117 ◦ 4 ′ E), ex Pycnonotus atriceps ( Pycnonotidae ), 7.viii.2015 (Ram´on Soto Madrid) ( MMBC). 2♀, 26, MALAYSIA: YSFMA in Sabah, ex Pycnonotus melanoleucos ( Eyton, 1839) – Black-and-white Bulbul ( Pycnonotidae ), 12.viii.2015 (Ram´on Soto Madrid) ( MMBC).

Remarks. Our specimens differ from the description of M. johnsoni presented by Hellenthal and Price (2003) by setal counts and dimensions as follows [setal counts and dimensions mentioned by Hellenthal and Price (2003) are in parentheses]:

Female (n = 4). Tergal setae: II, 4–5 (5–11); III, 11–14 (13–18); IV, 12–16 (13–18). Postspiracular setae very long on II, IV, VII and VIII (0.35–0.59); long on I, III and VI (0.22–0.30); and short on V (0.14–0.19) (according to Hellenthal and Price (2003) very long on all segments). Sternal setae: VII, 11–15 (9–14).

Dimensions: AW, 0.53–0.54 (0.55–0.59); ANW, 0.19–0.20 (0.20–0.22); TL, 1.28–1.31 (1.38–1.50).

Male (n = 4). Postspiracular setae very long on II, IV, VII and VIII (0.30–0.48); long on I, III and VI (0.17–0.26); and short on V (0.11–0.13) (according to Hellenthal and Price (2003) very long on all segments). Sternal setae: II, 4–6 (4–5) in each aster; VI, 20–28 (21–37).

Dimensions: HL, 0.25–0.27 (0.26–0.28); TL, 0.99–1.02 (1.04–1.15).

Figures

Fig. 3. Myrsidea franciscae sp.n. A, dorso-ventral view of female thorax and abdomen; B, head shape; C, male metasternal plate and sternites I–II; D, male genital sac sclerite.

Fig. 6. Habitus. Myrsidea carmenae sp.n. A-B, holotype female (A), paratype male (B). Myrsidea franciscae sp.n. C-D, holotype female (C), paratype male (D).

Fig. 2. Myrsidea carmenae sp.n. A, dorso-ventral view of female thorax and abdomen; B, head shape; C, male metasternal plate and sternites I–II; D, male genital sac sclerites.