Austrolimnophila (Austrolimnophila) cretica, Starý, 2014

Starý, Jaroslav, 2014, Two new species of Austrolimnophila from the Mediterranean (Diptera: Limoniidae), Acta Entomologica Musei Nationalis Pragae 54 (1), pp. 355-360 : 356-358

Austrolimnophila (Austrolimnophila) cretica sp. nov.

( Figs 1–2 )

Type material. HOLOTYPE: J ( SMOC): GREECE: CRETE: Khania Region, Kourna Lake, 11.v.2004 (J. Starý leg.), labelled ‘ CRETE 11.5.2004 / Khania Region / Kourna Lake / J. Starý leg.’ [printed, white label] // ‘ HOLOTYPE / Austrolimnophila (s. str.) / cretica sp. n. J / J. Starý 2013’ [printed, red label]. The specimen is pinned; apex of abdomen cut off; terminalia dissected and placed in a sealed plastic tube with glycerine, pinned with the specimen. PARATYPES (42 JJ 7 ♀♀): GREECE: CRETE: Khania Region: Kournas , 11.v.2004, 1 ♀ ; Kourna Lake , 11.v.2004, 2 JJ ; Vrysses , brook, 12.v.2004, 23 JJ 2 ♀♀ ; Stilos, Killiaris River , 13.v.2004, 6 JJ ; Episkopi, Petres River , 16.v.2004, 2 JJ ; Georgioupoli , marsh, 12.v.2004, 1 J ; Georgioupoli env., river, 17.v.2004, 2 JJ ; Georgioupoli , river, 19.v.2004, 1J 1♀ ; Kakopetros, brook, 23.v.2004, 1J 1♀ (all J. Starý leg.) ( JSOC, NMPC, SMOC). Rethimno Region: Spili, brook, 22.v.2004, 2 JJ(J. Starý leg.) ( JSOC). [Khania Region] 2 km NE of Kambos, stream in gorge with trees and undergrowth, 20.v. 1994, 250 m, 2 JJ 2 ♀♀ ( R. T. A. Schouten leg.) ( JSOC, ZMAN). All specimens pinned ; terminalia, if dissected, placed as for holotype.

Diagnosis. Medium-sized species. Body in general ochreous, or yellowish brown, darker dorsally, suffused with grey pruinosity. Wing narrow, origin of Rs shortly before tip of A 2, discal cell rather small. Male terminalia with outer gonostylus generally slender, parallel-sided, gently sinuous, abruptly tapered distally into sharp blackened hook; aedeagus considerably long, slender, exceeding beyond distal end of gonocoxite. Wing length 6.3–8.1 mm.

Description. Male. Head with heavy silvery dark grey pruinosity on frons and vertex. Rostrum ochreous; palpus slightly darker, greyish brown. Antenna 16-segmented, reaching approximately to base of wing, dark greyish brown except for yellowed base of flagellomere 1. Flagellomeres elongate, gradually narrowed towards apex of antenna. Longest verticils on flagellomeres slightly exceeding length of their respective segments, pubescence sparse.

Thorax generally ochreous, darker dorsally. Pronotum ochreous. Prescutum and scutum dark greyish brown; only anterior part of paratergite pale ochreous; scutal lobe yellowed posterolaterally near base of wing. Scutellum partly yellowed. Postscutellum greyish ochreous. Pleuron greyish ochreous, except for paler ochreous dorsopleural membrane, and with slightly indicated darker longitudinal stripe anteriorly crossing cervical sclerite, lower part of postpronotum and lower part of anepisternum. Wing tinged brownish, rather narrow, width-length ratio about 1: 4. Pterostigma weakly indicated. Venation: Sc 2 sometimes partly longitudinal, joining R 1 beyond tip of Sc 1. Rs about twice length of R 3+4, arcuated near its base. Origin of Rs shortly before tip of A

2

. Distal section of M

1+2

(beyond discal cell) moderately long, about one ¿fth length of M 1. Discal cell comparatively small, short, M 3+4 (posterior/lower margin of discal cell) less than half length of M 4. Halter obscure yellow, knob darkened. Legs ochreous, including coxae and trochanters, apices of femora and entire tarsi slightly darkened.

Abdomen greyish ochreous, paler ventrally, lateral margins of segments 1–7 broadly dark brown; segments 8 and 9 shiny dark brown throughout. Male terminalia ( Figs 1–2 ) relatively larger with respect to rest of abdomen compared to other species. Tergite 9 posteriorly with narrow but deep, rectangular, median notch with slightly protruding postero-lateral corners; posterior margin lateral of notch more or less truncate. Gonocoxite generally cylindrical, slightly narrowed distally, without any distinguishing characters. Both gonostyli setose. Outer gonostylus generally slender, parallel-sided, gently sinuous on inner surface, abruptly tapered distally into sharp, blackened, terminal hook. Inner gonostylus very slender, strongly sinuous, obtuse at apex. Paramere darkly pigmented, its posterior arm hook-shaped, subacute at tip; tips broadly separated. Aedeagus considerably long, slender, generally straight in lateral aspect, membranous at tip, extending to, or slightly beyond distal end of gonocoxite. Dorsal apodeme of vesica of moderate length, strongly arched ventrally. For other details in structure of aedeagal complex, see Fig. 2 .

Female resembling male in general appearance. Female terminalia with cercus long, slender, slightly upturned, subacute at tip. Hypogynial valve long, straight, reaching beyond middle of cercus.

Differential diagnosis. Austrolimnophila (A.) cretica sp. nov. is similar to A. (A.) brevicellula in the distal section of M 1+2 (beyond discal cell) moderately long, about one ¿fth the length of M 1 or more, and the discal cell small, its posterior/lower margin (M 3+4) less than half the length of M 4. In the structure of the male terminalia, however, the new species conspicuously differs from all the other species, in nearly every detail, such as the distinctive outer gonostylus (slender, parallel-sided, gently sinuous, abruptly tapered into a sharp hook), the posterior arm of the paramere (hook-shaped, subacute at tip), and the aedeagus (considerably long and slender).

Etymology. The name of the new species, creticus (- a, - um), refers to its occurrence in Crete. An adjective in nominative singular.

Distribution. Greece: Crete.

Figures

Figs 1–4. 1–2 – Austrolimnophila (A.) cretica sp. nov., male terminalia (paratype).1 – general view, dorsally. 2 – aedeagal complex, dorsal view. 3–4 – A. (A.) pallidior sp. nov., male terminalia (holotype). 3 – general view, dorsally. 4 – aedeagal complex, dorsal view. Scale bars = 0.5 mm.