Columbicola effeminatus, Tendeiro, 1984

Adams, Richard J., Price, Roger D. & Clayton, Dale H., 2005, Taxonomic revision of Old World members of the feather louse genus Columbicola (Phthiraptera: Ischnocera), including descriptions of eight new species, Journal of Natural History 39 (41), pp. 3545-3618 : 3577

publication ID	https://doi.org/ 10.1080/00222930500393368
persistent identifier	https://treatment.plazi.org/id/CB3C8797-C318-8707-FE15-19ABFDC7FAF8
treatment provided by	Felipe
scientific name	Columbicola effeminatus
status

Treatment

7. effeminatus View in CoL species group

This group contains a single species from the host genus Caloenas . It has both sexes with anteriorly expanded sagittal thickening just posterior to dorsoanterior head plate; similar antennae ( Figures 94 View Figures 78–94 , 95 View Figures 95–111 ); body elongate; each side of metanotum with two long, two short setae ( Figure 2 View Figures 1–18 ). Male genitalia ( Figure 96 View Figures 95–111 ) with posterior portion of mesosome hourglass– shaped, anterior portion rounded, with four pores. Female subgenital plate ( Figure 97 View Figures 95–111 ) triangular, without apparent groove; row of spiniform setae across abdomen posterior to plate.

Columbicola effeminatus Tendeiro

( Figures 94–97 View Figures 78–94 View Figures 95–111 ) Columbicola effeminatus Tendeiro 1984: 85 . Type host: Caloenas nicobarica (L.).

Description

Male head ( Figure 94 View Figures 78–94 ) with APW 0.147; HW, 0.29–0.31; HL, 0.61–0.63; HL/ HW, 2.03–2.10. Thorax with PW, 0.24–0.25; MW, 0.29–0.30. Genitalia as in Figure 96 View Figures 95–111 ; parameres thick, broadly rounded, small medial extensions near mesosome; GW, 0.130 –0.147. TL, 2.69–2.81. Female similar to male, most dimensions only slightly larger. Head ( Figure 95 View Figures 95–111 ) with APW, 0.132 –0.157; HW, 0.31–0.32; HL, 0.61–0.64; HL/ HW, 1.97–2.00. Thorax with PW, 0.25–0.26; MW, 0.31–0.32. Ventral terminalia unique ( Figure 97 View Figures 95–111 ); subgenital plate pointing posteriorly, with 4–5 short lateral setae. TL, 2.82–2.96 GoogleMaps .

Material

Holotype male, allotype female, 1 male, 1 female paratypes of Columbicola effeminatus , ex Caloenas nicobarica , Papua New Guinea (1).

Remarks

The males of this species are the only Columbicola among those with two long and two short metathoracic setae that do not have an enlarged scape or spur on the third antennal segment. The genitalia of both sexes are unique. The lack of an enlarged male scape may be associated with the reasonably close overall size of the two sexes. The females in many other species of Columbicola are distinctly larger than the males and, when they mate, the male slides under the female, grasping her around the thorax with his antennae. A male C. effeminatus would probably not be able to grasp a female with its filiform antennae, implying a different mating strategy for these lice.