Tonnoiriella atlantica ( Satchell, 1955 ),

Wagner, Rüdiger & Withers, Phil, 2020, The West-Palearctic species of the genus Tonnoiriella Vaillant, 1971 (Diptera: Psychodidae, Psychodinae), Zootaxa 4728 (2), pp. 183-210: 197-198

publication ID

publication LSID

persistent identifier

treatment provided by


scientific name

Tonnoiriella atlantica ( Satchell, 1955 )


Tonnoiriella atlantica ( Satchell, 1955) 

( Figs. 26–28View FIGURES 26–31)

Pericoma atlantica Satchell, 1955  : Annals of the Natal Museum 13: 112.

Tonnoiriella atlantica  ; Wagner 1987: Entomofauna 8 (2): 14.

Material: 1♂ holotype on pin: 4 microslides with head, styles + aedeagus, wings, thorax and abdomen, red la- bel: (handwritten) Pericoma atlantica Satchell  m.s., pink label: Peric (Lib) atlantica  holotype, with label with red margin: type ♂; circular white label: El Biar 1.II. [18]93, reverse Lidad atlantica; white label: Eaton Bequest B.M. 1929-590. [Note: El Biar is a district of Algiers, the capital of Algeria].

1♂ slide mounted; round white label (partly pasted over): palpus, antenna, hind leg, not readable, penis; white label Eaton no2 c; white label: Eaton Bequest 1929-590; white label: Tonnoirella atlantica  ; blue label: paratype Pericoma atlantica Satchell  m.s.; white label: Libidophila atlantica  ♂, Torrent beyond l’Hospice de Vieilliards, Bône, Algeria, 14.III.1903 Alg. No. VI. (partly pasted over by small blue label: paratype (all BMNH). The slide contains 2 wings, 1 leg, 2 antennae, 1 palpus complete, 1 palpus incomplete, epandrial processes lateral view, epandrium and epandrial processes lateral view, 2x gonocoxite and gonostylus, 1x aedeagus lateral view.

Further material: 1♂ 1♀, Tunisia: Oued Titria , 5 km östlich Ain Sobah, 90 m a.s.l., 36°56’N / 8°56’E, 3 June 1982, shaded streamGoogleMaps  ; 2♂ 2♀ Tunisia: 4 km südlich Ain Drahan , 530 m a.s.l., 36°43’N / 8°40’E, 17.-18. May 1982, stream; all leg. Malicky ( RW)GoogleMaps  .

Description (holotype): head missing; antenna of scape pedicel and 14 flagellomeres. Relative length of antennomeres: 21-26-24-24-26-26-28-28-27-24-20-19-17-14-13-17; absolute length: 0.04-0.05-0.05-0.05-0.05-0.05- 0.06-0.06-0.05-0.05-0.04-0.04-0.03-0.03-0.03- 0.03 mm; flagellomeres 5–11 with a pair of digitate ascoids. Palpus four segmented; relative length: 38-41-60-71; absolute length: 0.08-0.08-0.12- 0.14 mm.

Thorax missing. Wing length 2.17 mm, width 0.82 mm; length by width relation: 2.66.

Male terminalia with gonocoxites approximately 3x longer than wide, parameres not discernable; gonostyli almost straight, bent only near tip. Epandrial processes ( Fig. 28View FIGURES 26–31) in lateral view 2x longer than high, with 5–6 feathered tenacula, 3 almost as long as epandrial processes, 2 about half as long.

Description of a T. atlantica  specimen from Tunisia: Head with eyebridge of 3 facet rows; distance between eyes 3 facet diameters; with postocular bristles. Antenna with scape, pedicel and 14 flagellomeres; absolute length of antennomeres: 0.040-0.052-0.040-0.040-0.040-0.042-0.042-0.042-0.040-0.036-0.036-0.034-0.034-0.028- 0.026- 0.032 mm; relative length: 20-26-20-20-20-21-21-21-20-18-18-17-17-14-13-16. Flagellomeres 5–11 with a pair of digitiform ascoids. Absolute length of palpus segments: 0.060-0.088- 0.106-0.186 mm; relative length: 30-44-53- 93.

Wing length by width relation 2.61; length 1.86 mm, width 0.71.

Male terminalia with a thin hypandrium with linguiform median extension ( Fig. 26View FIGURES 26–31). Gonocoxite about 3x longer than wide with a long seta at about middle on inner surface. Gonostylus little longer than the gonocoxite, slightly bent.

Parameres with well-developed ventral bridge (pocket shaped oval lobes), median portion not discernable; dorsal parts large inner edges bent.

Aedeagus with basiphallus as long as gonocoxite with darker sclerotization along the mid-line. Ventral lobe curved bipartite; ventral arm connected with the cross distiphallus dorsal arm almost straight; the dorsal lobe is very faint, straight and is distally with a faint sclerite. Distiphallus with a triangular basis connected to the hook shaped ventral basiphallus lobe that is slightly bent apically.

Epandrium rhomboid with 2 foramina, epandrial processes with 6 tenacula, 3 long and 3 short on one side, 2 long and 4 short on the other side ( Fig. 27View FIGURES 26–31).

Distribution: Algeria, Tunisia.

Remarks: Type specimens from Algeria and specimens from Tunisia obviously belong to the same species, based on the shape of the hypandrium and the aedeagus sclerites.


Mykotektet, National Veterinary Institute














Tonnoiriella atlantica ( Satchell, 1955 )

Wagner, Rüdiger & Withers, Phil 2020

Pericoma atlantica

Satchell 1955