Eupholidoptera jacquelinae Tilmans, 2002

Willemse, Luc, Tilmans, Jos, Kotitsa, Nefeli, Trichas, Apostolos, Heller, Klaus-Gerhard, Chobanov, Dragan & Ode, Baudewijn, 2023, A review of Eupholidoptera (Orthoptera, Tettigoniidae) from Crete, Gavdos, Gavdopoula, and Andikithira, ZooKeys 1151, pp. 67-158 : 67

publication ID	https://dx.doi.org/10.3897/zookeys.1151.97514
publication LSID	lsid:zoobank.org:pub:5FEDE55D-C9AF-47D5-9125-9F1758AE2A18
persistent identifier	https://treatment.plazi.org/id/80F3E45D-4C76-5C3E-800E-87BD737480EA
treatment provided by	ZooKeys by Pensoft
scientific name	Eupholidoptera jacquelinae Tilmans, 2002
status

Treatment

Eupholidoptera jacquelinae Tilmans, 2002 View in CoL

Figs 24 View Figures 11–24 , 38 View Figures 25–38 , 52 View Figures 39–52 , 66 View Figures 53–66 , 82 View Figures 69–82 , 96 View Figures 83–96 , 110 View Figures 97–110 , 125 View Figures 111–125 , 139 View Figures 126–139 , 153 View Figures 140–153 , 167 View Figures 154–167 , 181 View Figures 168–181 , 197 View Figures 182–197 , 212 View Figures 198–212 , 219 View Figures 218, 219 , 242 View Figures 240–246 , 254 View Figures 254, 255 , 256 View Figure 256 , 259 View Figure 259

Eupholidoptera jacquelinae Tilmans, 2002: 157.

Eupholidoptera jacquelinae Morphological description. Tilmans 2002: 157.

Examined specimens.

Holotype, allotype, 2 ♂ (paratypes); 4 ♂, 6 ♀ (for details see Suppl. material 2).

Diagnostics features.

Frontal part of head (Fig. 24 View Figures 11–24 ) pale with black dots. Pronotal dorsum (Fig. 38 View Figures 25–38 ) brown to yellow, orange-brown flush with dark brown markings in middle of prozona, metazona yellow with brown flush, pronotal lateral lobes with black dorsal fascia, in prozona not sharply delimited ventrally and strongly narrowing posteriorly, rest of pronotal lateral lobes yellow with vague brown marks except for broad bright yellow margin in metazona; elytra area near the fore margin white, other parts black; anal tergite black, other tergites in living specimens brownish to olive-green; subgenital plate from cream white to bright yellow. Male - stridulatory file left elytron (paratype 2001.004.12): length 4.4 mm, width 0.1 mm, total number of teeth (including proximal and distal ones) 144, density of teeth in middle two thirds of the file 29 teeth per mm; cercus (Figs 125 View Figures 111–125 , 139 View Figures 126–139 ) slender, 8-9 × longer than wide, without any tooth, slightly bent inwards; subgenital plate (Figs 153 View Figures 140–153 , 167 View Figures 154–167 ) in ventral view convex, remarkably slender with well-defined median keel and next to it on both sides a depression; strongly elongated apical lobes that (faintly discernible) pass into long styli that form an extension of the lobes; apex of the apical lobes dorsally armed with a sharp spine that covers the basis of the stylus (Fig. 181 View Figures 168–181 ); anal tergite (Figs 82 View Figures 69–82 , 96 View Figures 83–96 , 110 View Figures 97–110 ) in dorsal view with a round dorsomedian depression, in caudal view posterior margin triangularly extended ventrally with V-shaped medial excision, strongly curved frontally, provided with an apical tooth on either side, surface of processes with transverse wrinkles, depression and processes densely covered with golden-coloured hairs; titillator (Figs 197 View Figures 182–197 , 212 View Figures 198–212 ) small, with basal parts extending, weakly curved laterally, apical parts fused, slightly swollen in basal half with medial depression, divided in apical half, from the narrow basis widening up to middle of basis half, from there narrowing apically, tips simply pointed, parallel, surface with transverse wrinkles, in lateral view moderately curved dorsally. Female (Fig. 242 View Figures 240–246 ) - subgenital plate (Figs 52 View Figures 39–52 , 66 View Figures 53–66 ) varying from longer than wide to somewhat wider than long, slightly impressed on both sides of median groove, in some females with transverse faint wrinkles, hind margin obliquely convergent toward a triangular, median excision along one third of total length, apical lobes diverging with narrowly posterior angles, lateral sides slightly impressed.

Measurements.

See Tables 6 View Table 6 , 7 View Table 7 .

Bioacoustics.

Based upon the sound recordings of one specimen, the song of E. jacquelinae , as in all species of Eupholidoptera , consists of isolated syllables produced in long series with the opening hemisyllable much shorter and weaker than the closing hemisyllable. In E. jacquelinae , the syllable duration is ~ 231 ms (Fig. 219 View Figures 218, 219 ). In the present two recordings, the syllable repetition rate is slower than 1/s. Although the recordings do not permit detailed analysis, it seems that the first part of the closing hemisyllable contains a more densely series of teeth impacts and the second part a more loosely series. This would suggest the closing movement initially is fast but ends slowly. The song may most likely be confused with the other species of Eupholidoptera in Crete, except E. smyrnensis and E. forcipata . For details of sound recordings of Eupholidoptera jacquelinae see Suppl. material 3.

Variation.

For the description of E. jacquelinae in 2002 only three males and one female from Gavdos were available. At present more specimens are at hand, also from the islet of Gavdopoula. We compared seven males (5 from Gavdos and 2 from Gavdopoula) and seven females (also 5 from Gavdos and 2 from Gavdopoula). The males, compared with the holotype, show no differences in colour, marking, last abdominal tergite, subgenital plate with styli, cercus, or titillator (from three males). The females, however, compared to the allotype, show some variation in marking and the form of the subgenital plate. Most of the females show more black markings on the lateral lobes of the pronotum than the allotype, but even then, less markings than in the males. A bit more than half of the females studied possesses a subgenital plate that is not longer than wide as in the allotype, but as long as wide or even a little bit wider than long. In one female from Gavdos and one of Gavdopoula the median groove of the subgenital plate fades away toward the basis. In a small number of the females the subgenital plate show faint transverse wrinkles.

Differential diagnosis.

Male E. jacquelinae is differentiated from all other (Cretan) Eupholidoptera by its uniquely shaped, strongly elongated apical lobes of the subgenital plate (Figs 153 View Figures 140–153 , 167 View Figures 154–167 ) armed with a long apical spine that dorsally covers the basis of the long styli that form an extension of the lobes. Females differ in the subgenital plate (Figs 52 View Figures 39–52 , 66 View Figures 53–66 ), that is a bit longer than wide to a little wider than long combined with a medial incision of its hind margin measuring more than one third of the length of the subgenital plate. In colouration E. jacquelinae is one of the Cretan Eupholidoptera species with no or only minute black marking on the pronotal disc. For more details differentiating E. jacquelinae from other Cretan Eupholidoptera see Table 5 View Table 5 .

Distribution.

Restricted to the islets of Gavdos and Gavdopoula, south of western Crete (Fig. 254 View Figures 254, 255 ). For a complete list of localities, specimens and repositories see Suppl. material 1.

Habitat.

The habitats where the species was found consists of rocky ground with sparse vegetation of low trees ( Pinus brutia ), thorny shrubs and smaller plants as well as sand dunes with Pistacia , Juniperus , and Tamarix . The male specimens of E. jacquelinae were collected by hand on bushes of Erica manipuliflora , Pistacia , Tamarix , and Pinus but not on prickly bushes like Juniperus or Sarcopoterium spinosum , a spiny shrublet very common on Crete but much less so on Gavdos. The females however were found hiding under the low spiny shrubs of Euphorbia acanthothamnos . Trap catches on Gavdos and Gavdopoula recorded the species between 8 and 270 m.

Phenology.

The holotype male together with a paratype male was collected on 11 June at 50 m. The allotype female together with another paratype male was collected as nymph in the period 30 April to 2 May, becoming adult 25 May. Additional females were collected on 5 August. Specimens were found in traps emptied between mid-March and mid-November.