Aradosyrtis A.Costa 1864

Heiss, Ernst, 2015, New taxonomic assignments of Calisiinae with description of two new genera (Hemiptera, Heteroptera, Aradidae), Zootaxa 4000 (3), pp. 363-376 : 368-370

Genus Aradosyrtis A.Costa 1864 revived status

( Figs.14–19 , 29, 30 )

Type species: Aradosyrtis ghiliani A.Costa 1864 revived status Aradosyrtis ghilianii A.Costa 1864:106 , 133, table V, fig. 6 (habitus) Aradosyrtis pygmaeus Garbiglietti 1869:276

Calisius ghiliani Bergroth 1894:98 (syn. of Aradosyrtis , emend.) Calisius ghilianii Horvath 1913:624 (redescr., key)

Calisius ghilianii Kormilev & Froeschner 1987:60 (cat.) Calisius ghiliani Ribes 1988:139 (larva V)

Calisius ghiliani Heiss 2001:21 (cat. CPH4:21)

Calisius ghiliani Heiss & Pericart 2007:267 (tax., fig., key)

Material examined: One male and female labelled: IT-Sardinien / Prov. Oristano 400m / Morgongiori v. Quercus / suber geklopft / 19 IV 2009 K.Adlbauer (pr) // ( CEHI).

Costa’s female type specimen was from Sardinia but is lost. These topotypical specimens correspond to the original description and illustration. The male is designated here as Neotype of Aradosyrtis ghiliani and labelled accordingly.

Redescription. As detailed descriptions were already given by Horvath 1913 and Heiss & Pericart 2007, only a short redescription and additional data are presented here.

Body elongate oval; coloration ochraceous with brownish to blackish darker areas and tubercles; short antennae, segment IV with whitish plaques; male and female with dorsally exposed tergite VIII; spiracles II–VI ventral, VII lateral and visible from above; venter with sub-lateral tubercles on vltg II–VII.

Head. Slightly wider than long or as wide as long; clypeus with flat granulation, laterally depressed, apex rounded reaching base of antennal segment IV; antennae short 0.6–0.8x as long as width of head, segments I–III of subequal length, IV longest with scattered whitish plaques; eyes sub-globular; post-ocular lobes with acute lateral tooth; vertex with median double row of larger tubercles.

Pronotum. About twice as wide as long, lateral margins with rounded humeri, sinuate, converging anteriorly, beset with row of round tubercles; disk with four granulate carinae, median ones reaching anterior margin, lateral ones joining median carinae at level of shallow transverse impression.

Scutellum. Basal triangular elevation with four large whitish tubercles overlapping pronotum, median carina without larger erect tubercles; lateral carina along exposed corium granulate; surface roughly punctured.

Abdomen. Lateral margins of deltg II–VII with double row of three round tubercles, two anterior ones fuscous, posterior one yellowish; exposed lateral carina of mtg II–VI between scutellum and deltg II–VI with 4–5 erect tubercles each, posterior one larger and whitish, preceding ones smaller and fuscous; mtg VII raised and carinate at base; tergite VIII of male exposed as a small transverse sclerite.

Venter. Spiracles II–VI ventral, VII lateral, placed on anterior-most tubercle of deltg VII and visible from above; sternite VIII of male crescent shaped, posterolateral apices bearing spiracle VIII which are visible from above; surface smooth with a row of sub-lateral tubercles delimiting vltg II–VII increasing in number from 2 to 3– 4 posteriorly.

Pygophore. Rounded, produced posteriorly, surface with larger granules at middle.

Female. Of larger size and more oval body; mtg VII raised and carinate at base, tergite VII elevated at middle; exposed tergite VIII consisting of cluster of lateral tubercles bearing spiracle VIII connected by a transverse granulate sclerite.

Measurements. Male / female: Length 2.65/3.05; length of antennae 0.4/0.45; ratio length of antennae / width of head 0.68/0.69; ratio head length/width 1.07/1.13; ratio pronotum w/l 1.94/2.0; ratio scutellum l/ w 1.68 /1.68; width of abdomen 1.1/1.125; length antennal segments I/II/III/IV = 3/3.5/3.5/6 and 4/4/4/6.

Discussion. Distinct morphological differences between the Neotropical Calisius pallipes and the Westpalaearctic “ Calisius ” ghiliani , supporting they hypothesis of separate taxa by COI molecular barcoding evidence, indicate that they belong to different genus-level taxa.

As a consequence, the original genus Aradosyrtis A.Costa 1864 is revived and considered a valid genus of the Old World. Hence Aradosyrtis ghiliani A.Costa 1864 revived status.

Figures

FIGURES 14 – 19. Aradosyrtis ghiliani. 14 — neotype male from Sardinia dorsal view; 15 — detail of antennal plaques; 16 — neotype male ventral view; 17 — female from Tunisia (Ain Draham) dorsal view; 18 — plaques of antennal segment IV; 19 — female ventral view.

FIGURES 25 – 32. Terminal dorsal segments of treated Calisiinae spp. 25,27, 29,31 dorsal view; 26,28, 30,32 ventral view; 25 – 26 — Calisius pallip es; 27 – 28 — Caribocalisius farri; 29 – 30 — Aradosyrtis ghiliani; 31 – 32 — Afrocalisius lativentris. Arrows indicate the dorsally exposed tergite VIII.