Therophilus depressiferus, van Achterberg, Cornelis & Long, Khuat Dang, 2010
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publication ID |
https://dx.doi.org/10.3897/zookeys.54.475 |
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persistent identifier |
https://treatment.plazi.org/id/C00C0601-28AB-2B2F-F28C-3B3B9B0B4C41 |
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treatment provided by |
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scientific name |
Therophilus depressiferus |
| status |
sp. n. |
Therophilus depressiferus ZBK sp. n. Figs 256-266
Type material.
Holotype, ♀ (RMNH), "N. Vietnam: Ninh Binh, Cuc Phuong N.P., n[ea]r centre, c 225 m, 29.vi-18.vii.2000, Mai Phu Quy, RMNH’01”. Paratypes (2 ♀): 1♀ (IEBR), same data as holotype; 1 ♀ (RMNH), "S. Vietnam: Dong Nai, Cat Tien N.P., Mal. traps, c 100 m, 9.iv.2007-13.v.2007, M.P. Quy, N.T. Manh & C. v. Achterberg, RMNH’07”.
Diagnosis.
The new species is similar to Therophilus rudimentarius (Enderlein, 1920) comb. n., but differs by having POL half as long as OOL ( Therophilus rudimentarius :0.7 times); the pronotal trough crenulate medially, rugose-punctate ventrally and sparsely finely punctate dorsally (rudimentarius:entirely punctate); the mesosoma 1.8 times as long as high (rudimentarius:1.4 times); the first tergite 1.5 times as long wide apically (rudimentarius:1.6 times). The new species is similar to Bassus albifasciatus (Watanabe, 1934), but differs by having the tarsal claws with a distinct lobe ( Bassus albifasciatus :simple); the first tergite 1.5 times as long as wide apically (albifasciatus:1.8 times) and the second tergite entirely black (albifasciatus: basal 0.6 reddish-brown to black).
Description.
Holotype, ♀, length of body 8.5 mm, of fore wing 7.4 mm, of ovipositor sheath 7.2 mm.
Head.
Antennal segments 45; length of third segment 1.3 times fourth segment, length of third, fourth and penultimate segments 2.8, 2.5 and 1.5 times their width, respectively; length of apical segment 2.3 times as long as penultimate segment; maxillary palp 0.8 times height of head; malar space 2.4 times as long as basal width of mandible; in dorsal view length of eye 4.8 times temple; ocelli in low triangle (Fig. 264), POL:OD:OOL= 7:6:13; face densely punctate (Fig. 263); frons smooth, laterally densely punctate and concave near antennal sockets (Fig. 264); vertex and temple shiny with sparse punctures.
Mesosoma.
Length of mesosoma 1.8 times its height; pronotum shiny with rugae ventrally, dorsally pronotum with dense fine punctures (Fig. 257); area near lateral carina of mesoscutum crenulate; lateral lobes of mesoscutum shiny, sparsely punctate, slightly flat posteriorly; middle lobe of mesoscutum with dense punctures medially, smooth laterally and apically; notauli deep and crenulate, united posteriorly forming short groove near scutellar sulcus; scutellar sulcus 0.7 times as long as dorsal face of scutellum and with 4 carinae; scutellum convex with sparse distinct punctures, subposterior crest transverse, interrupted medially (Fig. 258); precoxal sulcus wide, strongly crenulate (Fig. 257); mesopleuron below precoxal sulcus areolate-rugose anteriorly, rugose-punctate posteriorly; mesopleuron above precoxal sulcus largely smooth medially, distinctly punctate posteriorly; metapleuron reticulate-punctate dorsally, ventrally setose and largely rugose; propodeum largely areolate-rugose with 5 transverse carinae medially; propodeal spiracle medium-sized, 1.7 times as long as wide.
Wings.
Fore wing: second submarginal cell medium-sized triangular (Fig. 260); vein SR1 straight; r:3-SR+SR1=7:78. Hind wing: vein M+CU 0.8 times as long as vein 1-M.
Legs.
Length of hind femur, tibia and basitarsus 3.7, 6.7 and 8.0 times their width, respectively; hind femur (as remainder of legs) with short setae (Fig. 261); length of outer and inner spur of middle tibia 0.3 and 0.5 times middle basitarsus, respectively; outer side of middle tibia with 1 peg and a cluster of 5 pegs at apex; hind tibia distinctly narrowed basally and widened apically (Fig. 256); length of outer and inner spur of hind tibia 0.3 and 0.4 times hind basitarsus, respectively; outer side of hind tibia with a cluster of 12 pegs (figs); hind coxa distinctly punctate; hind femur reticulate-punctate; tarsal claws with a large lobe (Fig. 262).
Metasoma.
First tergite distinctly depressed laterally; length of first tergite 1.5 times its apical width (Fig. 259); dorsal carinae developed, intermingled with striae at apical third; first tergite longitudinally rugose-striate, coriaceous apically, area between striae granulate; second tergite with weak rugose transverse groove; basal area of second tergite with sparse setae and punctures (Fig. 259); ovipositor sheath 0.97 times as long as fore wing.
Colour.
Black; mouthparts, fore leg and middle tibia and tarsus yellow; medial round area of face, malar space and temple partly, mesoscutum, tegula reddish yellow; hind tibia (but basal pale yellow ring and yellow spurs) and tarsus brown; first-second metasomal tergites ivory ventrally; wing membrane dark brown, with pale band extending from vein 2-SR+M to vein 3-CU1.
Variation.
Length of body 8.2-9.3 mm, of fore wing 7.0-7.4 mm, vein M+CU 0.7-0.8 times vein 1-M, outer side of middle tibia with 2-12 pegs; second tergite without weak transverse groove; large reddish-yellow medial area of face may be fused with clypeus; entirely malar space and temple may be reddish-yellow; length of ovipositor sheath 1.0-1.1 times fore wing; wing membrane dark brown or yellowish-brown; basal ring of hind tibia white or pale brownish.
Distribution.
N Vietnam: Ninh Binh and S Vietnam: Dong Nai.
Biology.
Unknown.
Etymology.
From “depressus” (Latin for "pressed down"), and “fero” (Latin for “carry”), because of the depressed frons.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.