Empidideicus (Anomaloptilus) hauseri Evenhuis & Gharali, 2022

Evenhuis, Neal L. & Gharali, Babak, 2022, The subgenus Empidideicus (Anomaloptilus) (Diptera: Mythicomyiidae) in Madagascar, Zootaxa 5222 (5), pp. 401-426 : 408-410

Empidideicus (Anomaloptilus) hauseri Evenhuis & Gharali , n. sp.

( Figs 8 , 28, 29 , 42 , 53, 54 , 67, 68 )

Types. Holotype ♂ from MADAGASCAR: Tulear Province : Zombitse National Park, near ANGAP Office, 22°53.19′S, 44°41.53′E, 840 m, 20 Jan–13 Feb 2003, M.E. Irwin, F. Parker & R. Harin’Hala ( CASLOT 019836 ) . Paratypes: MADAGASCAR: Tulear Province : 4♀, Zombitse National Park , near ANGAP Office, 840 m, 27 Mar–3 Apr 2002 ( CASLOT 019845 ) ; 2♀, same data except 8–14 Feb 2002 ( CASLOT 019837 ) ; 2♀, same data except 12–23 Apr 2002 ( CASLOT 019818 ) ; 1♂, 4♀, same data except 28 Feb–6 Mar 2002 ( CASLOT 019822 ) ; 1♀, same data except 19–26 Nov 2001 ( CASLOT 01934 ) ;; 1♀, same data except 26 Jan–5 Feb 2002 ( CASLOT 019821 ) ; 2♂, same data except 25 Aug–3 Sep 2002 ( CASLOT 019816 ) ; 9♂ ♀, same data except 28 Feb–10 Mar 2002 ( CASLOT 019844 ) ; 1♀, same data except 22–29 Dec 2001 ( CASLOT 019819 ) ; 3♀, same data except 29 Dec 2001 – 5 Jan 2002 ( CASLOT 019832 ) ; 4♂, 1♀, Zombitse National Park , national road, 22°50.43′S, 44·43.87′E, 7–14 Dec 2001, R. Harin’Hala ( CASLOT 019824 ) ; 1♀, same data except 9–19 Nov 2001 ( CASLOT 019829 ) ; 1♀, same data except 13–25 Jul 2002 ( CASLOT 019833 ) ; 4♂ ♀, same data except 1–9 May 2002 ( CASLOT 019846 ) ; 4♂ ♀, same data except 5–12 Jan 2002 ( CASLOT 019820 ) ; 3♀, same data except: 25 Aug–3 Sep 2002 ( CASLOT 019816 ) ; 4♂, same data except 22–29 Dec 2001 ( CASLOT 019826 ) ; 4♂, same data except 26 Nov–2 Dec 2001 ( CASLOT 019838 ) ; 1♂, 1♀, same data except 25 Jul–1 Aug 2002 ( CASLOT 019847 ) ; 1♂, 4 km NW Manambo, Mikea Forest , Malaise in deciduous forest, 22°54.22′S, 48°28.53′E, 27 Jul–3 Aug 2003, R. Harin’Hala, M.E. Irwin ( CASLOT 014402 ) ; 1♀, same data except 2–13 Jul 2002 ( CASLOT 024698 ) ; 2♀, same data except 23 Jul –6 Aug 21002 ( CASLOT 024700 ) ; 2♀, Cape Ste. Marie Special Reserve , 25°35.26′S, 45°09.78′E, 37 m, 9–15 Dec 2002, M. Irwin, F. Parker, R. Harin’Hala, Malaise in spiny bush ( CASLOT 024734 ) . Holotype in CAS . Paratypes in CAS and BPBM .

Diagnosis. Similar to E. (A.) andriambahomananii n. sp. by both having the second antennal flagellomere more than 1/3 the length of the first flagellomere and a closed anal cell, but can be easily separated from it by the all yellow scutellum (scutellum with brown basomedially in E. (A.) andriambahomananii n. sp.), the yellow prescutellar area (black in E. (A.) andriambahomananii n. sp.), and by the brown sternites (sternites yellow in E. (A.) andriambahomananii n. sp.).

Description:

Male ( Fig. 8 ). Length: 1.45–1.80 mm. Wing: 1.50–2.00 mm. Head: longer than high; eyes dichoptic, separated at vertex by 1.5× distance between lateral ocelli; occiput and postgena black; frons with upper half black, lower half white; face white with sparse minute black hairs, tip of oral margin white; antennae (cf. Fig. 23 ) black; scape short, subtrapezoidal; pedicel subconical, wider than long; first flagellomere lanceolate, length 2.5× width; second flagellomere one-half length of first flagellomere, with minute transparent apical style; mentum black; clypeus brown, length one-half oral margin; proboscis brown, length three-fourths head length; labrum sclerotized, stiff, pointed apically, length subequal to proboscis; palpus not evident.

Thorax ( Fig. 28 ). Mesonotum matte black with yellow markings in following areas: subquadrate prescutellar area extending anteriorly for to mid scutum as admedian vittae; interhumeral marks extending posteriorly as admedian vittae (vittae interrupted in middle of scutum), dorsolaterally from humeral callus to postalar callus and coalescing with prescutellar mark; scutellum yellow; scutum and dorsum of scutellum with short fine white hairs; pleura bare; pleura dark brown with pale yellow to white marking on following: posterodorsal corner of anepisternum, upper margin of katepisternum, upper three-fourths of anepimeron, laterally on propleuron, upper three-fourths of meron; halter stem grayish brown, knob white.

Legs. Coxae brown; rest of legs yellow, except basal three-fourths of hind femur and tarsal segments 2–5 brown.

Wing ( Fig. 42 ). Elongate, length 3× width; subhyaline with pale brownish tinge; veins brown; costa ends beyond R 4+5 about three-fourths way to M 1; vein Sc incomplete; Rs fading at connection with R 1; R 4+5 slightly curved upward at wing margin; vein M 1 and M 2 curved to wing margin; cell dm closed by apical crossvein, crossvein width ca. three-fourths width of crossvein r-m; A 1 thin, relatively straight to wing margin; anal cell closed at wing margin; fringe of hair on posterior margin of wing well shortest at wing tip becoming longer and more sparse toward base.

Abdomen ( Fig. 53 ). Dorsum dull brown medially, white laterally, brown at extreme lateral tips of tergites; medial brown on tergites becoming successively less on succeeding segments; sternites dark brown; tergites with sparsely scattered minute hairs.

Genitalia ( Fig. 67 ). Hypopygium shiny brown. In lateral view with epandrium subquadrate with thin, pointed apicoventral process ( Fig. 67A ); cerci large, slightly sclerotized, with large membranous sheath ventrally associated with parameral sheath ( Fig. 67C, D ) (membrane in ventral view with lightly sclerotized medial rib with pair of arms curving outward toward to connect to epandrium ventrally); in ventral view with gonocoxites rounded, tapering to apex, with thin, basal sclerotization, with medial cleft shallow, broad ( Fig. 67B ); gonostylus consisting of apical pointed portion and larger, semi-trapezoidal, basal portion; lateral arms of parameral sheath extending well below gonocoxa, rounded, only slightly flared apically; aedeagal bulb very large, rounded, four-fifths length of lateral parameral arms ( Fig. 67C ); aedeagal apodeme subequal in length to aedeagal bulb with long, pointed ventral portion; lateral rami thin; parameral sheath cylindrical distally, angled ventrally, truncate apically; thin aedeagus extending slightly beyond end of parameral sheath.

Female: As in male except dark coloration of mesonotum and abdomen paler brown. Proboscis yellow; mentum yellowish white.Thorax ( Fig. 29 ) with mesonotum with admedian vittae connected medially. Pleura all yellow except lower half of katepisternum and meron darker yellow to brown. Fore coxae yellow, mid and hind coxae brown; rest of legs all yellow. Abdomen ( Fig. 54 ) with tergites with small, paired spots in white lateral area. Genitalia ( Fig. 68 ): Genital fork U-shaped, with medial portion of “U” thin, evanescent in some specimens; with large opaque, round, black structure each side of furca, with narrow opaque black basal arm meeting at vaginal opening; spermatheca spheroid, sclerotized brown, slightly wider than high, without striations on basal half, shallow invagination apically, with striations except at apical margin; apical spermathecal duct ca. 3/4 length of spermatheca, thin, transparent; sperm pump 2× length of apical duct, transparent, not sclerotized apically or basally, slightly flared and rounded apically; basal duct confluent with sperm pump; common duct absent.

Etymology. The specific epithet honors Martin Hauser, collector of Malagasy mythicomyiids and for his generosity in supplying material of interesting flies to the senior author for study over the past many years.

Figures

FIGURES 5–10. Malagasy Empidideicus (Anomaloptilus), habitus, lateral view. 5, E. (A.) andriambahomananii, n. sp., male; 6, E. (A.) andriambahomananii, n. sp., female; 7, E. (A.) contrasticus, n. sp., male; 8, E. (A.) hauseri, n. sp., male; 9, E. (A.) irwini, n. sp., male; 10, E. (A.) nanus, n. sp., male.

FIGURES 25–33. Malagasy Empidideicus (Anomaloptilus), thoraces, dorsal view. 25, E. (A.) andriambahomananii, n. sp., male; 26, E. (A.) contrasticus, n. sp., male; 27, E. (A.) contrasticus, n. sp., female; 28, E. (A.) hauseri, n. sp., male; 29, E. (A.) hauseri, n. sp., female; 30, E. (A.) irwini, n. sp., male; 31, E. (A.) irwini, n. sp., female; 32, E. (A.) nanus, n. sp., male; 33, E. (A.) nanus, n. sp., female.

FIGURES 40–47. Malagasy Empidideicus (Anomaloptilus), wings. 40, E. (A.) andriambahomananii, n. sp.; 41, E. (A.) contrasticus, n. sp.; 42, E. (A.) hauseri, n. sp.; 43, E. (A.) irwini, n. sp.; 44, E. (A.) nanus, n. sp.; 45, E. (A.) regius, n. sp.; 46, E. (A.) rhinoclypeatus Evenhuis; 47, E. (A.) rinhai, n. sp.

FIGURES 50–58. Malagasy Empidideicus (Anomaloptilus), abdomens, dorsal view. 50, E. (A.) andriambahomananii, n. sp., female; 51, E. (A.) contrasticus, n. sp., male; 52, E. (A.) contrasticus, n. sp., female; 53, E. (A.) hauseri, n. sp., male; 54, E. (A.) hauseri, n. sp., female; 55, E. (A.) irwini, n. sp., male; 56, E. (A.) irwini, n. sp., female; 57, E. (A.) nanus, n. sp., male; 58, E. (A.) regius, n. sp., male.

FIGURES 67–68. Empidideicus (Anomaloptilus) hauseri, n. sp., genitalia. 67, male, A, lateral view, B, gonocoxae, ventral view, C, phallic complex, dorsal view, D, epiphallic membrane, dorsal view, E, gonostylus, detail; 68, female. Abbreviations: cer = cercus; mem= membrane associated with epandrium.

FIGURES 23–24. Malagasy Empidideicus (Anomaloptilus), antennae. 23, E. (A.) andriambahomananii, n. sp.; 24, E. (A.) nanus, n. sp.