Psammonirmus lunatipectus Gustafsson et al.

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: 97-100

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-FFEA-FFA0-FF74-61D4FDF1FC6B

treatment provided by

Plazi

scientific name

Psammonirmus lunatipectus Gustafsson et al.
status

new species

Psammonirmus lunatipectus Gustafsson et al.  new species

( Figs 146–152View FIGURES 146 – 147View FIGURES 148 – 152)

Type host. Serilophus lunatus aphobus Deignan, 1948  —silver-breasted broadbill.

Type locality. Phu Phak Khi Nak Mountain , Kok Sathon, Dan Sai District, Loei Province, Thailand. Other host. Serilophus lunatus lunatus (Gould, 1834)  —silver-breasted broadbill. 

Diagnosis. No member of any other genus treated here appears to be particularly close to Psammonirmus  n. gen. Laterally expanded mesosomes like those of Psammonirmus  ( Fig. 150View FIGURES 148 – 152) are also found in Hecatrishula  n. gen. ( Fig. 135View FIGURES 132 – 137) and Ceratocista  n. gen. ( Fig. 158View FIGURES 155 – 160), but these expanded sections are dorsal in Ceratocista  and Psammonirmus  , but ventral in Hecatrishula  . In both Hecatrishula  ( Figs 132View FIGURES 132 – 137, 140View FIGURES 140 – 145) and Ceratocista  ( Fig. 155View FIGURES 155 – 160) the antennae are sexually dimorphic, but this is not the case in Psammonirmus  ( Fig. 148View FIGURES 148 – 152). In addition, Psammonirmus  ( Fig. 148View FIGURES 148 – 152) is the only one of these three genera in which the dorsal preantennal suture interruptes the marginal carnina laterally and completely surrounds the dorsal anterior plate. pns is absent in several genera treated above, such as Brueelia  s. str. ( Fig. 44View FIGURES 44 – 48) and Acronirmus ( Fig. 85View FIGURES 85 – 89), and members of both these genera have dorsal preantennal sutures that are similar to that of Ps. lunatipectus  , but the differences in male genitalia (see above) are extensive, and do not suggest a close relationship with either of these genera.

Description. Both sexes. Head shape, structure, and chaetotaxy as in genus description and Fig. 148View FIGURES 148 – 152. Female heads generally more pointed anteriorly than male heads ( Figs 146–147View FIGURES 146 – 147). Thoracic and abdominal segments as in genus description and Figs 146–147View FIGURES 146 – 147.

Male. Abdominal chaetotaxy as in Table 2 and Fig. 146View FIGURES 146 – 147; ps of sternal plates III –VI often absent on one or both sides. Basal apodeme rounded rectangular ( Fig. 149View FIGURES 148 – 152). Proximal mesosome fishtail-shaped, slender. Gonopore ( Fig. 150View FIGURES 148 – 152) elongated, narrowly open distally. Mesosomal lobes wide, comb-shaped, overlapping considerably with parameres dorsally; distal margin pectinate; 2 pmes lateral to gonopore on ventral side ( Fig. 150View FIGURES 148 – 152). Parameral heads distinctly bifid ( Fig. 151View FIGURES 148 – 152). Parameral blades strongly curved, tapering, with distinct heel just distal to mesosome; pst1–2 not visible. Measurements ex Serilophus lunatus aphobus  (n = 3): TL = 1.19–1.23; HL = 0.39–0.42; HW = 0.35–0.36; PRW = 0.20–0.22; PTW = 0.28–0.31; AW = 0.40–0.45. Ex S. l. lunatus  (n = 2): TL = 1.31–1.34; HL = 0.41–0.42; HW = 0.36; PRW = 0.22–0.23; PTW = 0.29–0.31; AW = 0.43.

Female. Abdominal chaetotaxy as in Table 2 and Fig. 147View FIGURES 146 – 147; tps  on tergopleurites V –VIII absent in many specimens. One female with an additional tps  on tergopleurite VII on one side. Subgenital plate broad, almost quadratic ( Fig. 152View FIGURES 148 – 152), with distal margin bulging, but indistinct in all specimens examined; probably reaching vulval margin where cross-piece is vaguely visible in some specimens. Vulval margin ( Fig. 152View FIGURES 148 – 152) gently rounded almost flat medianly, with 3–7 short, slender vms on each side (more lateral setae generally progressively longer than median setae), and 9–12 thorn-like vss on each side; 3–6 long, slender vos; distal vos median to vss. Measurements ex Serilophus lunatus aphobus  (n = 3): TL = 1.39–1.60; HL = 0.40–0.45; HW = 0.35–0.39; PRW = 0.21–0.23; PTW = 0.28–0.30; AW = 0.40–0.46. Ex S. l. lunatus  (n = 5 except n = 3 for AW): TL = 1.65–1.83; HL = 0.44–0.48; HW = 0.39–0.41; PRW = 0.24–0.25; PTW = 0.31–0.34; AW = 0.46–0.50.

Etymology. The species epithet refers to the host species name, which derives from “ luna ”, Latin for “moon”, alluding to the thin, silver crescent mark on the chest of the host. The suffix derives from Latin “ pecten ” for “comb”, referring to the fringed distal margin of the mesosomal lobes.

Type material. Ex Serilophus lunatus aphobus  : Holotype ♂, Phu Phak Khi Nak Mountain , Kok Sathon, Dan Sai District, Loei Province, Thailand, 25 Mar. 1955, R.E. Elbel, RE-5112 ( NHMLAbout NHML)  . Paratypes: 1♀, Ban Muang Khai , Tha Li District, Loei Province, Thailand, 31 Jan. 1955, R.E. Elbel, RE-4610, RT-B-31178 ( NHMLAbout NHML)  ; 1♂, 1♀, Pho Lom Lo Mountain , Kok Sathon, Dan Sai District, Loei Province, Thailand, 6 Mar. 1955, R.E. Elbel, RE-4901 ( NHMLAbout NHML)  ; 1♂, 1♀, Nanthaeo Ban Bo , Dan Sai District, Loei Province, Thailand, 14 May 1955, R.E. Elbel, RE- 5228 ( NHMLAbout NHML)  ; 1♀, Nathaeo Ban Bo , Dan Sai District, Loei Province, Thailand, 14 May 1955, R.E. Elbel, RE- 5228 (PIPeR)  ; 1♂, 1♀, Ban Muang Khai , Loei Province, Thailand, 31 Jan. 1955, R.E. Elbel, RE-4610, RT-B- 31178 (PIPeR)  ; 1♂, 1♀, Phu Lom Lo Mountain , Kok Sathon, Dan Sai District, Loei Province, Thailand, 6 Mar. 1955, R.E. Elbel, RE-4901 (PIPeR). 

Ex S. l. lunatus  : 1♂, 1♀, Muang Ngai, Chiang Dao District, Chiang Mai Province, Thailand, 25 Apr. 1962, K. Thonglongya, SEATO-886 ( NHMLAbout NHML). 

NHML

Natural History Museum, Tripoli