Trichoprosopon Theobald 1901
Creators: name: Rivera-García, Karina D.
name: Mendez-Andrade, Alejandro
name: Ibáñez-Bernal, Sergio
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Culicidae
Trichoprosopon

description: Keys to species of Trichoprosopon
ADULTS
Modified from Lane & Cerqueira (1942) and Lane (1953).
1 Tarsi with pale scales.................................................................................. 2
- Tarsi dark-scaled..................................................................................... 9
2(1) Clypeus with setae.................................................................................... 3
- Clypeus without setae................................................................................. 7
3(2) Upper calypter with setae.............................................................................. 4
- Upper calypter without setae............................................................................ 6
4(3) Postpronotum with silvery reflections; maxillary palpus 0.20 proboscis length................................ soaresi
- Postpronotum with violaceous reflections; maxillary palpus 0.16 proboscis length................................. 5
5(4) Hindtarsomere 1 with basal spot of white scales...................................................... digitatum
- Hindtarsomere 1 without basal spot of white scales (Figs 3–6)...................................... mixtli sp. nov.
6(3) Female with maxillary palpus 0.2 proboscis length................................................. compressum
- Female with maxillary palpus slightly longer than 0.25 proboscis length.................................. obscurum
7(2) Postspiracular area with scales, mid- and hindtarsus with white scales........................................ lanei
- Postspiracular area without scales; hindtarsus without pale scales............................................... 8
8(7) Fore- and midtarsus with pale scales (golden)........................................................ evansae
- Only midtarsus with pale scales (white)........................................................... lampropus
9(1) Scutum elongate, length 3 times its width; wing root inserted beyond level of hindcoxa.................... vonplesseni
- Scutum oval, length less than 3 times its width; wing root inserted at level of hindcoxa............................. 10
10(9) Antepronotum with white scales................................................................... andinum
- Antepronotum with metallic-colored scales............................................................... 11
11(10) Length of hindfemur-tibia longer than tarsus......................................................... brevipes
- Length of hindfemur-tibia shorter than tarsus.............................................................. 12
12(11) Proboscis shorter than forefemur............................................................... pallidiventer
- Proboscis as long as forefemur......................................................................... 13
13(12) Mesonotum with bluish-green scales; foretibia slightly shorter than forefemur................................. simile
- Mesonotum with brown scales; foretibia 0.8 length of forefemur.......................................... castroi
FEMALE GENITALIA
The female genitalia of Tr. andinum, Tr. brevipes, Tr. castroi, Tr. digitatum, Tr. evansae, Tr. lampropus, Tr. lanei, Tr. obscurum, Tr. simile, Tr. soaresi and Tr. vonplesseni have not been described. Modified from Coher (1948).
1 Tergum X constricted medially................................................................ pallidiventer
- Tergum X divided in two............................................................................... 2
2(1) Tergum IX without interlobar space; insula length 2 times width; lobes of tergum X large..................................................................................................... undescribed species (Coher 1948)
- Tergum IX with interlobar space; insula length equal width; lobes of tergum X small, almost absent................... 3
3(2) Interlobar space of tergum IX deep, U-shape; insula sub-ovoid........................................ compressum
- Interlobar space of tergum IX shallow, V-shape; insula pyriform (Fig. 7).............................. mixtli sp. nov.
MALE GENITALIA
The male genitalia of Tr. vonplesseni have not been described. Modified from Lane & Cerqueira (1942) and Lane (1953).
1 Tergum IX without an interlobar space and 3 compact rows of setae...................................... digitatum
- Tergum IX with interlobar space with a single row of setae on each lobe of tergum IX.............................. 2
2(1) Gonocoxite conspicuously short, as wide as long...................................................... brevipes
- Gonocoxite longer than wide............................................................................ 3
3(2) Mid-region of anterior margin of tergum IX conspicuously concave..................................... lampropus
- Mid-region of anterior margin of tergum IX without concavity................................................. 4
4(3) Length of gonocoxite less than twice its greatest width....................................................... 5
- Length of gonocoxite more than twice its greatest width...................................................... 7
5(4) Interlobar space of tergum IX long, about equal to lobe width............................................ andinum
- Interlobar space of tergum IX small, less than lobe width..................................................... 6
6(5) Interlobar space of tergum IX very small, shallow, not reaching 0.5 length of lobe; paraproct with 4 or 5 terminal teeth.............................................................................................. pallidoventer
- Interlobar space of tergum IX deeper, reaching 0.5 length of lobe; paraproct with 3 terminal teeth................. simile
7(4) Paraproct with 1 terminal tooth....................................................................... lanei
- Paraproct with more terminal teeth....................................................................... 8
8(7) Paraproct with 5 terminal teeth.......................................................................... 9
- Paraproct with 2–4 terminal teeth....................................................................... 10
9(8) Interlobar space of tergum IX sub-quadrangular; setae of basal mesal lobe extend beyond apex of gonocoxite....... castroi
- Interlobar space of tergum IX triangular; setae of basal mesal lobe do not extend beyond apex of gonocoxite...... evansae
10(8) Basal mesal lobe near midlength of gonocoxite............................................................ 11
- Basal mesal lobe below midlength of gonocoxite........................................................... 12
11(10) Lobes of tergum IX each with 4 setae; paraproct with 2 terminal teeth.................................... obscurum
- Lobes of tergum IX each with 6–8 setae; paraproct with 3 or 4 terminal teeth............................ compressum
12(10) Setae of basal mesal lobe extend beyond apex of gonocoxite; proctiger with 6 or 7 cercal setae.................. soaresi
- Setae of basal mesal lobe do not extend beyond apex of gonocoxite; proctiger with more than 7 cercal setae (Figs. 9, 10)............................................................................................ mixtli sp. nov.
PUPAE
The pupae of Tr. castroi, Tr. evansae, Tr. lampropus, Tr. lanei, Tr. obscurum and Tr. vonplesseni have not been described. Trichoprosopon brevipes with insufficient information (da Costa Lima 1931). Modified from Lane & Cerqueira (1942) and Lane (1953).
1 Paddle with spicules at apex...................................................................... andinum pallidiventer simile
- Paddle without spicules at apex.......................................................................... 2
2(1) Seta 5-II–IV long, as long or longer than segment........................................................... 3
- Seta 5-II–IV short, never longer than segment.............................................................. 4
3(2) Seta 10-CT double; seta 5-II–IV longer than segment................................................. digitatum
- Seta 10-CT single; seta 5-II–IV as long as segment................................................. compressum
4(2) Paddle as long as abdominal segment VIII; seta 1-II always double, forked at apex............................ soaresi
- Paddle shorter than abdominal segment VIII; seta 1-II usually single, if forked then forked at midlength (Fig. 11).................................................................................................. mixtli sp. nov.
LARVAE
The larvae of Tr. castroi, Tr. evansae, Tr. lampropus, Tr. lanei, Tr. obscurum, Tr. soaresi and Tr. vonplesseni have not been described. Modified from Lane & Cerqueira (1942) and Lane (1953).
1 Abdominal segment VIII with comb; seta 5-VIII long, with about 8 branches in andinum (unknown in other species)...... 2
- Abdominal segment VIII without comb; seta 5-VIII single, strong, conspicuous, inserted in a sclerotized tubercle........ 4
2(1) Siphon index greater than 2.2; abdominal segment VIII with 3 or 4 comb scales......................... pallidiventer brevipes
- Siphon index less than 2; abdominal segment VIII with 4 or more comb scales.................................... 3
3(2) Siphon index greater than 1.5; comb scales with 1 or 2 long, strong apical spicules............................. simile
- Siphon index less than 1.5; comb scales with 2 or 3 long, strong apical spicules............................. andinum
4(1) Seta 5-VIII inserted in a large sclerotized tubercle; siphon index about 1.5; mandible with 5 teeth............ compressum
- Seta 5-VIII inserted in a small sclerotized tubercle; siphon index 1.6–2.0; mandible with 6 teeth...................... 5
5(4) Dorsomentum with 4 or 5 teeth on each side; seta 8-C double........................................... digitatum
- Dorsomentum with 6–8 teeth on each side; seta 8-C single (Fig. 12).................................. mixtli sp. nov.
description: Published as part of Rivera-García, Karina D., Mendez-Andrade, Alejandro & Ibáñez-Bernal, Sergio, 2023, Trichoprosopon mixtli sp. nov., a new sabethine species (Diptera: Culicidae) from a Mexican cloud forest, with an assessment of the genus and keys for the identification of known species, pp. 94-116 in Zootaxa 5254 (1) on pages 113-114, DOI: 10.11646/zootaxa.5254.1.5, http://zenodo.org/record/7710967