Mavromoustaca oppressa, VIRAKTAMATH & WEBB & YESHWANTH, 2025

Mavromoustaca oppressa sp. nov.

Figs 3 View FIGURES 3 AB, 8S, 11F, 13A–D, 27A–F, 58A–C

Diagnosis. This species externally resembles M. macchiae and M. brevispina but has much darker and bolder markings on the head and thorax. It differs from M. macchiae in having a ventral pygofer process well developed, aedeagus with well-developed dorsal apodeme and preatrium, lateral processes arising much more distally at the base of the shaft and about as long as the shaft (ventral processes arising at the base of the shaft and much longer than the shaft in M. macchiae ). It differs from M. brevispina in having the basal processes of the shaft about as long as the shaft (much shorter than the shaft in M. brevispina ).

Description. Coloration similar to that in M. brevispina but dark brown and bolder, posterior margin of crown dark brown in middle, forewing cells with elongate dark brown stripes.

Crown more angularly produced in front of eyes, o.6–0.7× as long as interocular distance. Pronotum twice as wide as long medially. Female sternite VII 3× as wide as long medially, slightly narrowed posteriorly with median concavity on posterior margin.

Male genitalia. Pygofer about as long as wide in lateral view, with ventral process well-developed and slightly exceeding dorsal margin. Subgenital plate 2.5× as long as wide at base with submarginal row of macrosetae and hair-like setae along margin and in apical region. Aedeagus with well-developed dorsal apodeme and preatrium; shaft curved anteriorly with basal processes arising laterally slightly distad of base and about as long as shaft appressed to shaft; gonopore apical.

Female genitalia. Valvula I and II as in M. brevispina .

Measurements. Male 4.0– 4.3 mm long 1.1 mm wide across eyes and 1.0 mm wide across posterolateral angles of pronotum.

Material examined. HOLOTYPE ♂, INDIA: H.P. [Himachal Pradesh]: 5 Km N Kalka, 2.x.1980, C.A. Viraktamath ( UASB) . PARATYPES, 2♂ INDIA: U.P. [now Uttarakhand]: Dehra Dun , IFRI, 25.iv.1975, C.A. Viraktamath; Mizoram : 1♂, Lunglei , 20.xi.1981, C.S. Wesley ( NBAIR, UASB) .

Etymology. The specific epithet is the Latin participle oppressus, -a, -um (= pressed together), referring to the appressed basal processes of the aedeagus.

Remarks. The markings of the crown and thorax somewhat resemble those of the Osbornellus rarus DeLong group recognized by Dominguez & Godoy (2010: 11, fig. 1b).