Oxythyrea tripolitana Reitter, 1891

Vondráček, Dominik, Hadjiconstantis, Michael & Šípek, Petr, 2018, Immature stages of the genus Oxythyrea (Coleoptera: Scarabaeidae: Cetoniinae) with a key to third instar larvae, and notes on the biology of the genus, Zootaxa 4486 (4), pp. 401-434 : 421

Oxythyrea tripolitana Reitter, 1891

( Figs. 3I ; 4I, R ; 5I, R ; 6I, Q ; 8C, I ; 9F, I ; 10I, R ; 11I ; 12I )

Material studied. 3 L3 reared ex adults collected at: Tunisia, Jerba, Rass Rmel, sand dunes, N°33.883, E°10.933, 7.vi.2006, J. Batelka, J. Straka lgt.; 12 L3 reared ex adults collected at: Tunisia, Djerba, Djerba island, 9 km NE of Houmt Souk, Rass Rmel sand spit, ca 1 m, N°33.883, E°10.933, 25.–26.iii.2014, O. Hillert, D. Král, P. Šípek, D. Vondráček lgt.

Body length 20–24 mm. Cranium: width 2.6–2.68 mm, height 1.47–1.67 mm. Cranium brown with faint sculpture; slightly elongate in shape, with its dorsal margin more or less convex at its entire length (length of dorsal straight portion of cranial between ¼ and ⅓ of maximum width of cranium). Chaetotaxy as in Table 1. Epipharynx: Zygum with 12–15 stout conical setae and 5–7 similarly shaped setae at its proximal base. Chaetoparia with 68–73 and 32–47 setae on right and left side respectively. Acanthoparia with 6–8 falcate setae. Stridulatory area of mandibles with 13–17 transverse ridges, ridges in apical third only slightly narrower than remaining ridges. If apical scissorial tooth of left mandible falcate, than its size not twice large as size of remaining. Transverse proximal row of setae and sensilla on ligula composed of 7–8 stout lanceolate setae and campaniform sensilla combined (mostly only lanceolate setae present). Setae of thoracic legs stout (spine-like) and short to slender hairlike. Respiratory plate of spiracle with 13–17 holes across diameter. Raster monostichous, sometimes with few scattered irregular pali around the main row; with 18–23 pali on each side, septula elliptic more than three times longer than wide. Tegites variable in size from half of the length of palus to four times as long as palus (longer tegites sparse). Tegilla densely setose; average distance between two setae equals from one to two times the length of palus. Tegilla fused into single tegillum, campus absent. Dorsal parts of last abdominal segment densely setose, covered with numerous short and medium long (up to three times length of palus) setae, without ring of prominent long setae or bald circular field.

Figures

FIGURE 3a–i. Habitus of third instar Oxythyrea larvae. a, O. abigail; b, O. albopicta; c, O. cinctella; d, O. dulcis; e, O. funesta; f, O. noemi; g, O. pantherina; h, O. subcalva; i, O. tripolitana.

FIGURE 4a–r. Cranium of third instar Oxythyrea larvae (a–i) and antenna of third instar Oxythyrea larvae, dorsal aspect (j–r). a, O. abigail; b, O. albopicta; c, O. cinctella; d, O. dulcis; e, O. funesta; f, O. noemi; g, O. pantherina; h, O. subcalva; i, O. tripolitana; j, O. abigail; k, O. albopicta; l, O. cinctella; m, O. dulcis; n, O. funesta; o, O. noemi; p, O. pantherina; q, O. subcalva; r, O. tripolitana. Scale bars = 1 mm (a–i); 0.5 mm (j–r).

FIGURE 5a–r. Epipharynx of third instar Oxythyrea larvae (a–i) and antenna of third instar Oxythyrea larvae, ventral aspect (j–r). a, O. abigail; b, O. albopicta; c, O. cinctella; d, O. dulcis; e, O. funesta; f, O. noemi; g, O. pantherina; h, O. subcalva; i, O. tripolitana; j, O. abigail; k, O. albopicta; l, O. cinctella; m, O. dulcis; n, O. funesta; o, O. noemi; p, O. pantherina; q, O. subcalva; r, O. tripolitana. Scale bars = 0.5 mm.

FIGURE 6a–q. Maxillo-labial complex of third instar Oxythyrea larvae, dorsal view (a–i) and maxillary stridulatory teeth of third instar Oxythyrea larvae (j–q). a, O. abigail; b, O. albopicta; c, O. cinctella; d, O. dulcis; e, O. funesta; f, O. noemi; g, O. pantherina; h, O. subcalva; i, O. tripolitana; j, O. abigail; k, O. albopicta; l, O. cinctella; m, O. dulcis; n, O. funesta; o, O. noemi; p, O. subcalva; q, O. tripolitana. Scale bars = 0.5 mm (a–i).

FIGURE 8a–l. Left mandible of third instar Oxythyrea larvae, dorsal, medial and ventral view (a–c), right mandible of third instar Oxythyrea larvae: ventral, medial and dorsal view (d–f), maxillo-labial complex of third instar Oxythyrea larvae, ventral view (g–i) and metathoracic leg (j–l). a, O. pantherina; b, O. subcalva; c, O. tripolitana; d, O. abigail; e, O. albopicta; f, O. cinctella; g, O. pantherina; h, O. subcalva; i, O. tripolitana; j, O. abigail; k, O. albopicta; l, O. cinctella. Scale bars = 0.5 mm.

FIGURE 9a–l. Right mandible of third instar Oxythyrea larvae, ventral, medial and dorsal view (a–f) and metathoracic leg of third instar Oxythyrea larvae (g–l). a, O. dulcis; b, O. funesta; c, O. noemi; d, O. pantherina; e, O. subcalva; f, O. tripolitana; g, O. dulcis; h, O. funesta; i, O. noemi; j, O. pantherina; k, O. subcalva; l, O. tripolitana. Scale bars = 0.5 mm.

FIGURE 10a–r. Last abdominal segment of third instar Oxythyrea larvae, ventral view (a–i) and last abdominal segment of third instar Oxythyrea larvae, detail of raster (j–r). a, O. abigail; b, O. albopicta; c, O. cinctella; d, O. dulcis; e, O. funesta; f, O. noemi; g, O. pantherina; h, O. subcalva; i, O. tripolitana; j, O. abigail; k, O. albopicta; l, O. cinctella; m, O. dulcis; n, O. funesta; o, O. noemi; p, O. pantherina; q, O. subcalva; r, O. tripolitana. Scale bars = 1 mm (a–i).

FIGURE 11a–m. Last abdominal segment of third instar Oxythyrea larvae, lateral view (a–i) and last abdominal segment of third instar Oxythyrea larvae, posterior view (j–m). a, O. abigail; b, O. albopicta; c, O. cinctella; d, O. dulcis; e, O. funesta; f, O. noemi; g, O. pantherina; h, O. subcalva; i, O. tripolitana; j, O. albopicta; k, O. cinctella; l, O. dulcis; m, O. funesta. Scale bars = 0.5 mm.

FIGURE 12a–o. Thoracic spiracles of third instar Oxythyrea larvae, entire view (a–i) and detail of sieve plate (j–o). a, O. abigail; b, O. albopicta; c, O. cinctella; d, O. dulcis; e, O. funesta; f, O. noemi; g, O. pantherina; h, O. subcalva; i, O. tripolitana; j, O. abigail; k, O. albopicta; l, O. cinctella; m, O. dulcis; n, O. funesta; o, O. subcalva. Scale bars = 0.1 mm (a–i).