Enicospilus hiepi, Pham & Pham & Matsumoto & Shimizu & Broad, 2023

Pham, Nhi Thi, Pham, Phu Van, Matsumoto, Rikio, Shimizu, So & Broad, Gavin R., 2023, A review of the genus Enicospilus Stephens (Ichneumonidae: Ophioninae) from Vietnam, with descriptions of ten new species, European Journal of Taxonomy 873 (1), pp. 1-151 : 72-74

Enicospilus hiepi sp. nov.

urn:lsid:zoobank.org:act:85F24F01-1A78-46EB-BE6C-9A0DEA4C3767

Fig. 38

Diagnosis

Interocellar area reddish brown; clypeus convex, ventral margin impressed, acute; mandible twisted ca 30°, outer surface with a diagonal setose groove; scutellum with lateral longitudinal carina present on anterior 0.6; fore wing fenestra with proximal, central and distal sclerites, central sclerite large, shaped resembling footprint, pigmented, positioned in upper half of distal part of fenestra; mesoscutum with three black stripes.

Differential diagnosis

The new species can be recognised from all other species by the combination of the shape of the alar sclerites and the short lateral carinae of the scutellum.

Etymology

Named after MSc. Nguyen Duc Hiep, an entomologist from IEBR, who collected the type specimen.

Material examined

Holotype

VIETNAM • ♀; Cao Bang Province, Phia Oac - Phia Den NP ; 791 m a.s.l.; 8 May 2021; Nguyen D.H. leg.; light trap; IEBR.

Description

Female (holotype)

MEASUREMENTS. Body length 25.4 mm, fore wing length 18.0 mm.

HEAD with FI = 0.7, GOI = 2.0 ( Fig. 38d ). Lower face 0.8× as wide as high, densely punctate ( Fig. 38b ). Clypeus 1.4× as wide as high, convex in profile, more densely punctate than face, ventral margin impressed, acute ( Fig. 38b ). Malar space 0.2× as long as basal mandibular width ( Fig. 38b ). Mandible twisted by ca 30°, moderately long, evenly narrowed, outer surface with diagonal setose groove ( Fig. 38b ). Upper tooth of mandible depressed, about 2 × as long as lower tooth ( Fig. 38b ). Frons short, vertex and gena with fine setae ( Fig. 38c–d ). Posterior ocellus close to eye ( Fig. 38c ). Occipital carina complete, ventral end meeting hypostomal carina at about 0.2 × basal mandible width from base of mandible. Antenna with 70 flagellomeres; F1 1.9× as long as F2; F20 2.4 × as long as wide.

MESOSOMA. Moderately shiny ( Fig. 38e ). Pronotum finely punctate ( Fig. 38e ). Mesoscutum 1.4× as long as maximum width, evenly rounded in profile. Notaulus absent. Scutellum strongly convex, punctate, without any rugae, lateral longitudinal carinae present on anterior 0.6. Epicnemium densely punctate ( Fig. 38e ). Epicnemial carina moderately strong, dorsal end bent to reach anterior margin of mesopleuron ( Fig. 38e ). Mesopleuron punctate and puncto-striate ( Fig. 38e ). Submetapleural carina slightly broadened anteriorly ( Fig. 38e ). Metapleuron finely punctate ( Fig. 38e ). Propodeum evenly rounded in profile; anterior transverse carina complete; anterior area longitudinally striate; spiracular area smooth; posterior area rugose; propodeal spiracle elliptical and not joining pleural carina by ridge ( Fig. 38e ).

WINGS ( Fig. 38f ). Fore wing with AI = 0.59, CI = 0.50, DI = 0.35, ICI = 0.51, SDI = 1.31, SI = 0.13, SRI = 0.23; vein 1m-cu&M strongly sinuate, angled medially; vein 2r&RS slightly sinuate, abruptly narrow distally; vein RS curved; fenestra and sclerites of discosubmarginal cell as in Fig. 38f ; proximal sclerite triangular, confluent with distal sclerite, strongly pigmented; central sclerite large, somewhat resembling footprint in shape, pigmented, positioned in upper half of distal part of fenestra; distal sclerite pigmented; proximal corner of marginal cell sparsely setose; posterodistal corner of second discal cell ca 80° and that of subbasal cell ca 70°; vein 1cu-a antefurcal to M&RS by 0.3× length of 1cu-a. Hind wing with NI = 1.7; vein RS straight; vein RA with 7 uniform hamuli.

LEGS. Hind leg with coxa in profile 2.0× as long as high; basitarsus 2.1× as long as second tarsomere; fourth tarsomere 3.3× as long as wide; tarsal claw simply pectinate.

METASOMA. With DMI = 1.2, PI = 3.1, THI = 2.8; thyridium oval; ovipositor sheath not longer than posterior height of metasoma.

COLOUR ( Fig. 38a ). Reddish brown except for apex of mandible, three longitudinal stripes of mesoscutum, and ventral parts of T5 onwards black. Wings hyaline; sclerites pigmented and amber; veins dark brown, pterostigma reddish brown.

Male

Unknown.

Distribution

Currently known only from Cao Bang Province, Northeast Vietnam.

Figures

Fig. 38. Enicospilus hiepi sp. nov., holotype, ♀ (IEBR). a. Habitus. b. Head, frontal view. c. Head, dorsal view. d. Head, lateral view. e. Mesosoma, lateral view. f. Central part of fore wing. Scale bars = 1.0 mm.